This adaptor for a syringe comprises: a first member that has a first through-hole that passes from a first end to a second end in the axial direction; a second member that has a second through-hole that passes from a third end to a fourth end in the axial direction, the third end being fixable to the first member and the fourth end being fixable to the distal end of a syringe; and a valve member that is disposed between the first member and the second member and that can be switched between a state of allowing communication between the first member and the second member and a closed state. The first member and the second member are fixed to each other by means of fixing structures formed respectively on the outer circumferential surface on the second end side of the first member and on the inner circumferential surface on the third end side of the second member. The valve member is displaced and deformed and can thus be switched between the state of allowing communication between the first member and the second member and the closed state.
B65B 3/12 - Methods of, or means for, filling the material into the containers or receptacles by application of pressure to material mechanically, e.g. by pistons or pumps
A rolling bearing includes a steel outer ring, a steel inner ring having a common central axis with the outer ring and disposed on an inner circumference side of the outer ring, and a plurality of rolling elements disposed to be able to roll on an inner circumferential surface of the outer ring and an outer circumferential surface of the inner ring. The outer ring includes a first outer ring and a second outer ring that is arranged alongside the first outer ring in a first axis direction in which the central axis extends and is fixed to the first outer ring. The inner ring includes a first inner ring and a second inner ring that is arranged alongside the first inner ring in the first axis direction and is fixed to the first inner ring. The outer ring has a protruding portion and a through hole corresponding to the protruding portion formed in one and the other of opposing portions in the first and second outer rings, the protruding portion and the through hole being fitted together. The inner ring has a protruding portion and a through hole corresponding to the protruding portion formed in one and the other of opposing portions in the first and second inner rings, the protruding portion and the through hole being fitted together. A slit is provided around either one or both of the protruding portion and the through hole.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
3.
THRUST ROLLER BEARING RETAINER AND THRUST ROLLER BEARING
This thrust roller bearing retainer: has a first surface and a second surface positioned in the thickness direction; is constituted by a pair of plate-shaped members; and holds a roller by accommodating the roller in a pocket. The thrust roller bearing retainer comprises: a pair of annular parts that are disposed spaced apart from each other in a radial direction; and a plurality of column parts that connect the pair of annular parts so as to form a plurality of pockets disposed spaced apart from each other in a circumferential direction. Each column part is provided with a recess that is recessed toward the first surface side in a center region in a rolling axis direction of the roller accommodated in the pocket. A first roller stopping part, which protrudes toward the pocket side and which prevents the roller from falling out from the first surface side, is provided to the first surface side of a first side wall surface of the column part to which the recess is provided. A second roller stopping part, which protrudes toward the pocket side and which prevents the roller from falling out from the second surface side, is provided to the second surface side of a second side wall surface of the column part at an end region in the rolling axis direction at a position which avoids the recess.
F16C 33/54 - Cages for rollers or needles made from wire, strips, or sheet metal
F16C 19/30 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
This linear motion guide unit comprises: a spline shaft; an outer cylinder; a plurality of first rolling elements; and a plurality of second rolling elements. The outer cylinder includes: a first sliding member; and a second sliding member. The first sliding member includes: a first end cap; an integrated first raceway component including a first cylindrical part and a first flange part; a first outer ring that includes a first raceway part, in which a fourth raceway surface opposite to a third raceway surface is provided on an inner diameter side, and a first ring part, and that is slidably attached to the first raceway component in the circumferential direction; and a plurality of third rolling elements. The second sliding member includes: a second end cap; an integrated second raceway component including a second cylindrical part and a second flange part; a second outer ring that includes a second raceway part, in which a sixth raceway surface facing the fifth raceway surface is provided on the inner diameter side, and a second ring part, and that is slidably attached to the second raceway component in the circumferential direction; and a plurality of fourth rolling elements.
A follower bearing provided with an inner member, an outer race, and a plurality of rolling elements. A follower bearing according to the present disclosure is furthermore provided with a cover that covers at least part of the outer peripheral surface of the outer race and at least part of the front surface of the outer race and that has an open region where part of the outer race is exposed, and a seal that is disposed to as to come into contact with a track surface of a counterpart member and seal the open region. The cover includes a first member that covers at least part of the outer peripheral surface of the outer race and that is fixed to the inner member, and a second member that covers at least part of the front surface of the outer race and that is removably fixed to the first member. The seal is removably fixed to the first member.
A cover member includes a longitudinally extending fastener and covers a machine constituent component. The cover member includes a wall part that is provided with the fastener and that forms a space for accommodating the machine constituent component. The fastener includes a right-side element extending along the longitudinal direction, a left-side element that longitudinally extends along the right-side element and that can mesh with the left-side element, a front-side slider attached to the right-side element and the left-side element, and a rear-side slider attached to the right-side element and the left-side element and positioned longitudinally apart from the front-side slider. When the front-side slider and the rear-side slider move in the longitudinal direction, the front-side slider and the rear-side slider cause the right-side element and the left-side element to separate from each other as each moves in a direction away from the side where the counterpart is positioned, and cause the right-side element and the left-side element to mesh with each other as each moves in a direction toward the side where the counterpart is positioned. A surface fastener is provided to the wall part.
This linear motion guide unit comprises: rails that each include a rail side surface and a rail upper surface extending in the longitudinal direction, the rail having a first orbital plane provided on the race side surface; a sliding member that is attached to the rails so as to be capable of relative movement, and includes a sliding member lower surface facing the rail upper surface and a second orbital plane facing the first orbital plane; a plurality of rolling elements that roll on a track passage formed by the first orbital plane and the second orbital plane; a cover member that includes a first fastener extending in the longitudinal direction, and covers the rails and the sliding member; a movement member that is disposed on the outside of the cover member and moves together with the sliding member; and a linking member for linking the sliding member and the movement member. The first fastener includes a first right-side element extending along the longitudinal direction, a first left-side element extending in the longitudinal direction along the first right-side element and capable of meshing with the first right-side element, a first front-side slider that is attached to the first right-side element and the first left-side element and is fixed to the sliding member and the movement member, and a first rear-side slider that is attached to the first right-side element and the first left-side element and positioned separated from the first front-side slider in the longitudinal direction, the first rear-side slider being fixed to the sliding member and the movement member. When the sliding member and the movement member move, the first front-side slider and the first rear-side slider cause the first right-side element and the first left-side element to separate from each other in conjunction with movement in the direction opposite to the side on which the opposite member is positioned, and causes the first right-side element and the first left-side element to mesh with each other in conjunction with movement toward the side on which the opposite member is positioned. The linking member includes a first support member disposed between the first front-side slider and the first rear-side slider in the longitudinal direction, and supporting the movement member. When viewed from the rail upper surface side in the direction perpendicular to the longitudinal direction, a first opening region formed when the first right-side element and the first left-side element are separated from each other is disposed at a position avoiding the rails.
This follower bearing module comprises a follower bearing, a fixture, and a fastener. The follower bearing comprises: an inner member; an outer ring having, on an inner circumferential surface thereof, an annular second raceway surface facing a first raceway surface; and a plurality of rolling elements disposed on an annular raceway along the first raceway surface and the second raceway surface so as to be in contact with the first raceway surface and the second raceway surface. The inner member includes a large-diameter part on which the first raceway surface is provided, and a shaft part that extends from the large-diameter part in an axial direction, and is at least partially accommodated in a mounting hole. The fixture includes: a cylindrical part disposed in a shaft through-hole and having a thread groove on an inner circumferential thereof; and a plate-like part provided on one end of the cylindrical part in the axial direction and extending toward the outer radial side. The fastener fastens the follower bearing and the fixture in a state in which the cylindrical part is disposed in the shaft through-hole. At least one of the follower bearing and the fixture is provided with a rotation prevention mechanism for preventing rotation of the fixture.
F16C 35/07 - Fixing them on the shaft or housing with interposition of an element
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
This follower bearing comprises: an inner member including an inner wall surface defining a through-hole; an outer ring; and a plurality of rolling elements. A smallest diameter portion of the through-hole has a diameter that is 40% or more of the outer diameter of a smallest outer diameter portion of the inner member. The inner member is made of steel that contains 0.12 to 0.39 mass% inclusive of carbon, 0.05 to 0.40 mass% inclusive of silicon, 0.55 to 0.95 mass% inclusive of manganese, and 0.60 to 1.25 mass% inclusive of chromium, with a remainder consisting of iron and unavoidable impurities, and includes a carburized layer so as to form at least part of a surface. In the carburized layer, the grain size number of prior austenite crystal grains specified in JIS G 0551 is 8.6 or greater.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
This speed reducer comprises: an input unit including a first bearing having an input shaft and a first inner race that is eccentric and rotates together with the input shaft; a cycloidal gear; a plurality of inner circumferential pins; an inner circumferential pin holder that holds both axial ends of the plurality of inner circumferential pins, and surrounding the outer circumferential surface of the input unit; a second bearing disposed on the outer diameter side of the cycloidal gear, and including a second inner race that is an output shaft, a second outer race disposed on the outer diameter side of the second inner race, and a rolling element disposed between the second inner race and the second outer race; and a plurality of outer circumferential pins held by the inner diameter surface of the second inner race, and which engage with the outer teeth of the cycloidal gear. The first inner race is provided separately from the input shaft. The input unit includes a movement regulating part that regulates the circumferential movement of the first inner race with respect to the input shaft.
F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
This rolling bearing comprises: a steel outer race; a steel inner race which has a shared center axis with the outer race and is disposed on the inner circumferential side of the outer race; and a plurality of rolling elements which are disposed so as to be capable of rolling on the inner circumferential surface of the outer race and the outer circumferential surface of the inner race. The outer race includes a first outer race and a second outer race which is fixed to the first outer race and disposed side by side with the first outer race in a first axial direction, which is the direction in which the center axis extends. The inner race includes a first inner race, and a second inner race which is fixed to the first inner race and disposed side by side with the first inner race in the first axial direction. The first outer race, the second outer race, the first inner race, and the second inner race each have a first part, a second part, and a third part. The first part is an annular disc part that extends in a direction orthogonal to the first axial direction. The second part is connected to the first part, and a circumferential surface thereof constitutes an annular rolling surface. The third part is a tubular part that is connected to the second part and extends along the first axial direction. An end face of the third part of the first inner race and an end face of the third part of the second inner race are opposite from and spaced from the inner circumferential surface of the third part of the first outer race and the inner circumferential surface of the third part of the second outer race, respectively.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
This rolling bearing comprises: an outer ring; a plurality of rolling elements that roll on a track surface; and an annular rolling-element fall prevention member that is formed by bending a strip-shaped metal member into a ring shape and welding both ends, and that prevents the rolling elements from falling out to the inner diameter side. The rolling-element fall prevention member includes a plurality of pillar portions, and a connection portion. The connection portion includes a welded portion, a first cut portion, and a second cut portion. Each of the first cut portion and the second cut portion, when seen from an axial direction, is provided within a range of angles between 45° to 315° inclusive from the welded portion, around an axial center. The second cut portion is provided at the position of a window portion located at a position corresponding to 180°, or the position of a window portion adjacent to the window portion located at the position corresponding to 180°, with respect to the position of the first cut portion around the axial center.
F16C 33/54 - Cages for rollers or needles made from wire, strips, or sheet metal
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
13.
LINEAR MOTION GUIDE UNIT AND PRELOAD LOSS DETERMINATION METHOD FOR LINEAR MOTION GUIDE UNIT
This linear motion guide unit comprises a rail, a slider, and a plurality of rolling elements. The slider includes a casing and an end cap. The casing includes a pair of sleeve parts disposed on both sides in the width direction of the rail, and a base part connected to each of the pair of sleeve parts. The linear motion guide unit includes: a strain sensor that is attached to the casing and detects strain of the casing; and a control device that has a determination unit which determines whether preload applied to the rolling elements has been lost on the basis of strain data detected by the strain sensor, and an output unit that outputs a determination result by the determination unit.
This crossed roller bearing comprises: an outer ring having a pair of outer ring raceway surfaces orthogonal to each other on the inner circumference; an inner ring that shares a common central axis with the outer ring and has a pair of inner ring raceway surfaces orthogonal to each other on the outer circumference; and a plurality of rollers arranged such that the directions of inclination thereof differ from each other in the circumferential direction between the outer ring raceway surfaces and the inner ring raceway surfaces. The outer ring and the inner ring are formed from a resin including at least one resin selected from the group consisting of polyether ether ketone (PEEK) resins, polyphenylene sulfide (PPS) resins, polyacetal (POM) resins, polyimide (PI) resins, polyamide imide (PAI) resins, polyamide (PA) resins, polybutylene terephthalate (PBT) resins, and polyethylene (PE) resins. The diameter d of the rollers and the length L of the rollers in the axial direction satisfy the relationship d × 0.97 > L.
F16C 19/34 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
This crossed roller bearing comprises: an outer ring that has, in the inner circumference thereof, a pair of outer ring raceway surfaces that are perpendicular to one another; an inner ring that has the same center axis as the outer ring, and has, in the outer circumference thereof, a pair of inner ring raceway surfaces that are perpendicular to one another; and a plurality of rollers that are positioned between the outer ring raceway surfaces and the inner ring raceway surfaces, with the tilt directions thereof alternating in a circumferential direction. The rollers each include a first section, a second section, and a third section. The first section has a hollow circular cylinder shape extending in an axial direction, and includes a first end in the axial direction and a second end which is a section on the opposite side from the first end in the axial direction. The second section is continuous with the first end and has a surface that is perpendicular to the axial direction. The third section is continuous with the second end and has a surface that is perpendicular to the axial direction. The second section closes the first end of the first section. The third section includes a protrusion that protrudes radially inward relative to the first section.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
This linear motion guide unit comprises: a spline shaft which has a first raceway surface that extends in the longitudinal direction and in which is provided an axial through hole that passes therethrough in the longitudinal direction; an outer tube which is attached so as to be movable relative to the spline shaft, and which has a second raceway surface opposite from the first raceway surface; and a plurality of rolling elements which roll along a raceway path constituted by the first raceway surface and the second raceway surface. The outer tube includes an endcap which includes a return path that is parallel to the raceway path and a direction-changing path that connects the return path and the raceway path, and an integral raceway component which is disposed to the outer diameter side of the return path. The raceway component includes a tubular part that has an inner diameter surface to which the second raceway surface is provided, and a flange part that protrudes to the outer diameter side from the outer diameter surface of the tubular part.
This linear motion guide unit comprises: a spline shaft that has a first raceway surface extending in the longitudinal direction; a slider that is attached so as to be capable of movement relative to the spline shaft and has a second raceway surface opposite the first raceway surface; and a plurality of rollers that roll along a raceway formed from the first raceway surface and the second raceway surface. The slider includes: a casing that is provided with a first circulation path parallel to the second raceway surface and the raceway, includes the second raceway surface, and is disposed radially outward relative to the spline shaft; and an end cap that is attached to the casing, and is provided with a second circulation path connecting the raceway and the first circulation path. The plurality of rollers circulate in a ring-shaped path formed from the raceway, the first circulation path, and the second circulation path. The casing is provided with a slit such that a portion of the first circulation path is exposed. The width of the slit is smaller than the length of the rollers.
This linear motion guide unit comprises a rail that has a first raceway surface, a slider that is attached so as to be able to move relative to the rail, and a plurality of rolling elements. The slider includes a casing, an end cap, and an end seal. The end seal includes a first lip that is exposed on the outer side on one side in the longitudinal direction and is in contact with the rail, and a second lip that is positioned nearer the inner side than the first lip and is in contact with the rail. In the second lip, the tightening allowance in a first region facing the first raceway surface is larger than the tightening allowance in a second region facing a surface other than the first raceway surface.
This linear guide unit includes: a track rail having a first rail raceway surface and a second rail raceway surface that extend in a longitudinal direction; a first slider that is mounted on the track rail so as to be capable of relative movement and has a first slider raceway surface facing the first rail raceway surface and a flat first mounting surface; and a second slider that is mounted on the track rail so as to be capable of relative movement and has a second slider raceway surface facing the second rail raceway surface and a flat second mounting surface. When viewed in the longitudinal direction, the first slider is provided away from the second slider. When viewed in the longitudinal direction, the second mounting surface is inclined with respect to the first mounting surface.
A follower bearing 1 includes: a shaft 30 having an outer peripheral surface including an annular first raceway surface 11; an outer ring 60 having an inner peripheral surface including an annular second raceway surface 41 facing the first raceway surface 11; and a plurality of rollers 70 disposed on an annular raceway along the first raceway surface 11 and the second raceway surface 41 to be in contact with the first raceway surface 11 and the second raceway surface 41. The outer ring 60 includes an annular first member 40 made of steel and an annular second member 50 made of a resin and covering outer peripheral surfaces 44A and 44B of the first member 40. The first member 40 includes a cylindrical portion 42 having a hollow cylindrical shape and including the second raceway surface, and a projection 43 extending radially outward from the cylindrical portion 42. Ends of the projection 43 in the axial direction are filled with the second member 50.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
This linear motion guide unit comprises: a rail; a slider; and a plurality of balls. The slider includes a coil spring disposed so as to extend in the longitudinal direction within a first circulation path. The coil spring includes a pair of first regions provided to both ends in the longitudinal direction and fitted in the first circulation path, and a second region smaller in diameter than the pair of first regions and disposed between the pair of first regions with a gap from the inner wall surface of the first circulation path.
A follower bearing 1 includes: an inner member 10 including a first body 50 and a flange 52; an outer ring 20; a plurality of rolling elements 40; and a first sealing member 30A including an annular first portion disposed between an outer peripheral surface 52A of the flange 52 and a first surface 22A and at least partially forming a sealing structure between the first portion and the outer ring 20. The first portion has an outer diameter that gradually increases toward a first end surface 52B at an end opposite to a first rolling surface 51A of the flange 52 in an axial direction.
This linear/curvilinear guiding device is provided with a rail and a mover. The mover includes a frame, a first swing part, and a second swing part. The first swing part and the second swing part each include an arm part, a first bearing part, and a second bearing part. The first bearing part includes a first track member, a second track member, a third track member, a plurality of first rolling elements, and a plurality of second rolling elements. The second bearing part includes a fourth track member, a fifth track member, and a third rolling element. In the first swing part and the second swing part, the second track member is connected with the frame and the second bearing part is separated from the frame.
This curved/straight guide device comprises a rail and a movable element. The movable element includes a frame, a first swing part, and a second swing part. The first swing part and the second swing part are configured so as to be capable of rotating around a part which is connected to the frame. Each of the first swing part and the second swing part includes an arm, a first bearing, and a second bearing. The first bearing has a first raceway member, a second raceway member, and a plurality of first rolling elements. The second bearing has a third raceway member, a fourth raceway member, and a plurality of second rolling elements. The curved/straight guide device further comprises an elastic member that is disposed so as to extend between the arm of the first swing part and the arm of the second swing part, and that can be in a compressed state in which the elastic member is compressed in the longitudinal direction of the rail or a tensed state in which the elastic member is stretched in the longitudinal direction of the rail.
This straight and curved guide rail includes a straight portion and a curved portion and servers to guide the movement of a mover. The straight and curved guide rail comprises a base portion extending in the longitudinal direction of the straight and curved guide rail and a track portion which is provided on the base portion, which extends in the longitudinal direction and which has a pair of rail ends in both side portions of the straight and curved guide rail in the width direction, the rail ends each including a track surface that contacts the mover. The straight and curved guide rail includes, in areas including end portions in the longitudinal direction, low rigidity areas that are lower in rigidity in a part including the track surfaces than the other areas.
A bearing comprises a first raceway member having an annular first raceway surface on an outer peripheral surface, a second raceway member having an annular second raceway surface facing the first raceway surface on an inner peripheral surface, a plurality of cylindrical rollers arranged on an annular rolling raceway along the first raceway surface and the second raceway surface so as to contact the first raceway surface and the second raceway surface, and a separator arranged adjacent to the cylindrical rollers in a circumferential direction. The separator has a cylindrical shape. In an outer peripheral surface of the separator is formed an annular groove defined by a groove wall surface having an arc shape in a cross section including the central axis. The separator is arranged such that the groove wall surface contacts outer peripheral surfaces of the cylindrical rollers adjacent in the circumferential direction. The curvature radius of the groove wall surface is greater than the curvature radius of the abovementioned outer peripheral surfaces.
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
F16C 19/40 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings with loose spacing bodies between the rollers
This linear motion guide unit comprises a rail, a casing, a plurality of rolling bodies, and a pair of direction changing members. The rail includes rail-side rolling surfaces. The casing includes a casing body and arm portions. Casing-side rolling surfaces are formed on the arm portions. A return path is formed in the casing. A direction changing path connecting a rolling body rolling path and the return path is formed in the pair of direction changing members. The linear motion guide unit comprises a holding member for clamping the rolling bodies together with the arm portions, and a support member for supporting the holding member relative to the direction changing members. A first hole that opens at a first end surface is formed in the holding member. A second hole, which communicates with the first hole and penetrates the direction changing member in a lengthwise direction, is formed in the direction changing member which, among the pair of direction changing members, faces the first end surface. The support member is inserted into the first hole and the second hole.
This linear motion guide unit comprises a rail, a casing, a plurality of rolling elements, and a pair of direction-changing members. The rail has a rail-side rolling surface. The casing has a pair of sleeve portions. The pair of sleeve portions each have a casing-side rolling surface formed thereon. The casing has a return path formed thereon. The pair of direction-changing members each have a direction-changing path formed thereon. The linear motion guide unit is provided with a holding member. The holding member includes a first end face. One of the pair of direction-changing members, which opposes the first end face, includes a second end face. One of the first end face and the second end face has formed thereon a projecting portion that projects toward the other of the first and second end faces. The other of the first and second end faces has formed therein an insertion hole in which the projecting portion can be inserted. The projecting portion has a shape that corresponds to the shape of the insertion hole. The projecting portion has a shape in which the distance from the center of gravity to an outer circumferential surface is changed.
This linear motion unit comprises a linear motion mechanism including a track member and a movement member, and a casing including a fastener. The fastener includes a first element, a second element capable of meshing with the first element, a first slider, and a second slider positioned apart from the first slider in a longitudinal direction. The first and second sliders cause the first element and the second element to separate from each other as each moves in a direction away from the side where the counterpart is positioned, and cause the first element and the second element to mesh with each other as each moves in a direction toward the side where the counterpart is positioned. The first and second sliders can be fixed in relation to the movement member.
A rotary table device according to the present disclosure comprises: a base part; a bearing; a table which is supported using the bearing so as to be able to rotate with respect to the base part; and a motor which rotates the table in the rotation direction of the bearing. The motor includes a coil row in which a plurality of three-phase coreless coils that are flat and annularly wound are arranged side by side and which is fixed to the base part, and a magnet row which is disposed so as to face the coil row, in which a plurality of plate-shaped magnets are arranged side by side in the circumferential direction of the table such that the opposite magnetic poles are alternated, and which is fixed to the table. A scale is printed along the entire outer circumferential surface of the table. A sensor for reading the scale is provided on the base part.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
H02K 21/24 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
This follower bearing comprises: an inner member having an annular first raceway surface on the outer circumferential surface thereof; an outer ring having, on the inner circumferential surface thereof, an annular second raceway surface facing the first raceway surface; and a plurality of rolling elements arranged on an annular raceway along the first raceway surface and the second raceway surface so as to be in contact with the first raceway surface and the second raceway surface. The outer ring includes an annular first member that is composed of steel, and an annular second member that does not contain reinforced fiber material, is composed of a crystalline thermoplastic resin, and covers the outer circumferential surface of the first member. The melt flow rate of the second member is 1 g/10 minutes to 10 g/10 minutes.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
C08L 87/00 - Compositions of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
A rotary table (1) includes a base body (10), a worm wheel (21), an inner ring (22), a plurality of rolling elements, and a worm screw unit (30). The worm screw unit (32) includes a worm screw (31) and a worm screw housing (32). The worm screw housing (32) has an opposing surface that faces an outer circumferential surface (21B) of the worm wheel (21). The worm screw housing (32) includes a flange portion (325) that protrudes from the opposing surface and covers a side face (215A) that, of the first gear (215) facing the opposing surface, is on the opposite side from the base body (10) in the axial direction of the worm wheel (21).
F16H 1/16 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
B23Q 11/12 - Arrangements for cooling or lubricating parts of the machine
B23Q 1/52 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only a single rotating pair
A bearing comprising: a first raceway member having an annular first raceway surface on an outer peripheral surface; a second raceway member having an annular second raceway surface facing the first raceway surface on an inner peripheral surface; and a plurality of rolling elements arranged on an annular rolling raceway along the first raceway surface and the second raceway surface so as to contact the first raceway surface and the second raceway surface. A rolling element feed opening that is an opening portion for the rolling track and is formed in at least one member from among the first raceway member and the second raceway member. The bearing further comprises: a lid member disposed at the rolling element feed opening; and a fixing member which is inserted into a first hole formed in the lid member and a second hole formed in at least one of the raceway members so as to communicate with the first hole and which extends in a direction intersecting the axial direction.
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
A linear motion guide bearing 1 includes a rail 10, a slider 20, and a plurality of rolling elements. The slider 20 has formed therein a pair of circulation passages, which are spaces connecting one end and another end in each of a pair of load-carrying races, which are spaces between a pair of first rolling surfaces 41 and a pair of second rolling surfaces 42. In a cross section perpendicular to the longitudinal direction, the rail 10 includes a bottom wall portion 11, a first side wall portion 12, a second side wall portion 13, and a top wall portion 14. One first rolling surface 41 is made up of a wall surface 15A on an inner side of a first corner portion 15, which is a region where the second side wall portion 13 and the bottom wall portion 11 are connected. The other first rolling surface 41 is made up of a wall surface 16A on an inner side of a second corner portion 16, which is a region where the first side wall portion 12 and the top wall portion 14 are connected.
A bearing comprising: a first raceway ring having a first raceway surface on the inner peripheral surface; a second raceway ring which has a second raceway surface facing the first raceway surface in the radial direction on the outer peripheral surface, a plurality of first through holes formed side by side in the circumferential direction, and a plurality of third raceway surfaces surrounding the plurality of first through holes; a plurality of third raceway rings each having a fourth raceway surface facing the third raceway surface in the radial direction on the outer peripheral surface; a plurality of first rolling elements arranged in a annular track along the first raceway surface and second raceway surface; and a plurality of second rolling elements arranged in a annular track along the third raceway surface and fourth raceway surface. The first raceway ring includes a pair of annular first steel plates disposed so as to be stacked on each other in the axial direction. The second raceway ring includes a pair of annular second steel plates disposed so as to be stacked on each other in the axial direction. The third raceway ring includes a pair of annular third steel plates disposed so as to be stacked on each other in the axial direction.
A rotary table (1) includes a base body (10), a worm wheel (21), an inner ring (22), a plurality of rolling elements, and a worm screw unit (30). The worm screw unit (30) includes a worm screw (31) held to be rotatable around an axis and having a second gear (31A) meshing with the first gear (215), and a worm screw housing (32) surrounding and holding the worm screw (31) and being fixed to contact the holding surface at a planar contacting surface thereof. One of the holding and contacting surfaces has a cylindrical pin (33) arranged to protrude therefrom. The other of the holding and contacting surfaces has a first recess (11) formed to receive the pin (33), the first recess having a width corresponding to the pin (33) and being elongated in the radial direction of the worm wheel (21).
F16H 57/12 - Arrangements for adjusting or for taking-up backlash not provided for elsewhere
F16H 19/08 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and oscillating motion
F16H 57/039 - Gearboxes for accommodating worm gears
F16H 57/021 - Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
B23Q 1/25 - Movable or adjustable work or tool supports
This pitch changer comprises a base member, a support member disposed above the base member, an expansion/contraction member that is fixed to the base member by the support member and is capable of expanding/contracting along a first axis, and a drive unit that causes the expansion/contraction member to expand/contract along the first axis. The drive unit comprises a screw shaft that extends along the first axis and has an axis of rotation, a power unit that causes the screw shaft to rotate around the axis of rotation, and a movement unit that is provided on the screw shaft, is made to move along the first axis by the rotation of the screw shaft around the axis of rotation, and is fixed in relation to a part of the expansion/contraction member.
G12B 5/00 - Adjusting position or attitude, e.g. level, of instruments or other apparatus, or of parts thereof; Compensating for the effects of tilting or acceleration, e.g. for optical apparatus
A table driving device comprising: a first housing in which first and second housing holes are formed; a first bearing fitted into the first housing hole; a shaft member inserted into the first bearing and the second housing hole; a second housing including an annular portion inserted between an inner peripheral surface surrounding the second housing hole and the shaft member; a second bearing fitted between the annular portion and the shaft member; and a bracket. An annular space adjacent to the second bearing on the bracket side in the axial direction is formed between the annular portion and the shaft member. The bracket includes a first protruding portion inserted into the annular space. The first protruding portion is in contact with an end surface of the second bearing in the axial direction. The first protruding portion is in contact with at least parts of the inner peripheral surface of the annular portion such that the center of the annular portion is positioned inside a triangle connecting three points arbitrarily selected from the parts that is in contact with the inner peripheral surface of the annular portion.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
A linear motion guide unit wherein a raceway groove formed in a casing of a slider has a first raceway surface extending in the length direction of the slider and a second raceway surface facing the first raceway surface and extending in the length direction of the slider. The second raceway surface includes: a first part including a center portion in the length direction of the casing; and second parts including both end portions in the length direction of the casing and each having a different wall surface shape from that of the first part. In the first part, the first raceway surface and the second raceway surface form, symmetrically to each other, a Gothic arch groove, and in each of the second parts, the second raceway surface has a surface recessed from a position symmetrical to that of the first raceway surface.
A speed reducer comprising: an annular external gear which has a plurality of external teeth and in which a first through hole and a plurality of second through holes arranged side by side in the circumferential direction so as to surround the first through hole are formed; an input shaft extending through the first through hole; a first bearing holding the input shaft so that the input shaft is relatively rotatable with respect to the external gear in the circumferential direction; a plurality of inner periphery pins extending through the second through holes in the axial direction; an inner periphery pin holder holding both ends of the plurality of inner periphery pins and surrounding the outer peripheral surface of the input shaft; a second bearing surrounding the outer peripheral surface of the external gear; and internal gear pins meshing with the external teeth. The second bearing includes: an outer ring fixed to the inner periphery pin holder; an inner ring disposed on the radially inner side relative to the outer ring and forming an output shaft that rotates at a lower speed than the input shaft; and rolling elements contacting the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. In the inner ring, a pin holding portion having an annular shape surrounding the outer peripheral surface of the external gear and holding the internal gear pins is formed along the inner peripheral surface.
F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
This reducer comprises: an annular outer-tooth gear that has a plurality of outer teeth and is such that a plurality of through-holes are formed so as to be aligned in a circumferential direction; an input shaft that penetrates a space surrounded by an inner circumferential surface of the outer-tooth gear; a bearing disposed between the outer-tooth gear and the input shaft; an inner-tooth shaft that has a plurality of inner teeth, which engage the outer teeth, and surrounds an outer circumferential surface of the outer-tooth gear; a plurality of inner circumferential pins that penetrate the plurality of through-holes in the axial direction; and an inner circumferential pin holder that holds both ends of the inner circumferential pins. The inner circumferential pin holder includes: a first holder part that has an annular holding part which holds a first end of the inner circumferential pins; a second holder part that has an annular holding part which holds a second end of the inner circumferential pins; and a column part that links the first holder part and the second holder part and penetrates the through-holes. The reducer further comprises a fixed member that fixes an end face of the column part to the first holder part or the second holder part and is inserted from the end face into the column part.
F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
This rotary table comprises: a base body; a movable ring disposed rotatably on the base body; a fixed ring disposed on the inner circumference side of the movable ring and fixed to the base body; and a plurality of rolling elements. The rotary table includes: a sensor fixed to the base body; and a dog fixed to the movable ring. The movable ring includes: a scale extending to at least a section of an outer circumference side surface; and a groove-shaped recess formed, at a position corresponding to the scale on the outer circumference of the movable ring, so as to be recessed inward from the outer circumference. The dog includes: a leg part that mates with the recess; and a detected part that projects outward from the leg part and is detectable by the sensor. The leg part can be fixed with respect to the movable ring at any position of the recess.
G12B 5/00 - Adjusting position or attitude, e.g. level, of instruments or other apparatus, or of parts thereof; Compensating for the effects of tilting or acceleration, e.g. for optical apparatus
B23Q 1/52 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only a single rotating pair
A rolling bearing 1 includes an outer ring 1A, an inner ring 1B, and a plurality of rolling elements. The outer ring IA includes a first outer ring 10 and a second outer ring 20. The inner ring 1B includes a first inner ring 30 and a second inner ring 40. In a cross section including a central axis R, grain flows 111 in the steel constituting the first outer ring 10 extend along a first rolling surface 511, grain flows 211 in the steel constituting the second outer ring 20 extend along a second rolling surface 512, grain flows 311 in the steel constituting the first inner ring 30 extend along a third rolling surface 513, and grain flows 411 in the steel constituting the second inner ring 40 extend along a fourth rolling surface 514.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), and a tricyclic liquid crystal compound of formula (2), and having a mixing mass ratio of the bicyclic liquid crystal compound and tricyclic liquid crystal compound of 95:5 to 15:85. The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
2OR
2n+1, 1≤n≤20 and R′ is methyl or ethyl.
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 20/00 - Specified physical properties of component of lubricating compositions
Provided are a lubricant composition which is advantageous in that, when applied to a contact area of metal parts, the lubricant composition can suppress generation of rust and can exhibit excellent lubricating performance, and a bearing the lubricant composition having sealed therein. A lubricant composition comprising at least one dicyclic liquid crystal compound represented by the following formula (1), at least one tricyclic liquid crystal compound represented by the following formula (2), and halogen ions, wherein the content of the halogen ions in the lubricant composition is 1 to 900 ppm.
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 20/00 - Specified physical properties of component of lubricating compositions
C10N 30/06 - Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
C10N 30/12 - Inhibition of corrosion, e.g. anti-rust agents, anti-corrosives
A follower bearing includes an outer ring, rolling elements, and a cage retaining the rolling elements. The outer ring includes an annular first member made of steel, and an annular second member made of resin and covering an outer circumferential surface of the first member. The first member includes a tubular portion. The second member includes a first portion disposed on one side of the tubular portion in an axial direction and having a first opposing surface that opposes an outer circumferential surface of the cage in a radial direction, and a second portion disposed on the other side of the tubular portion in the axial direction and having a second opposing surface that opposes the outer circumferential surface of the cage in the radial direction. In the radial direction, the first and second opposing surfaces are each disposed on a more outer circumference side than a second raceway surface.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
A rolling bearing 1 includes an outer ring 1A, an inner ring 1B, a plurality of rolling elements 1C, and a seal member 1D. The outer ring 1A includes a first outer ring 10 and a second outer ring 20. The inner ring 1B includes a first inner ring 30 and a second inner ring 40. The seal member 1D includes an annular base portion 61, 71 fixed to one bearing ring which is one of the outer ring 1A and the inner ring 1B, and an annular protruding portion 62, 72 protruding from the base portion 61, 71 and extending toward a first region which is a region opposing the one hearing ring in another bearing ring which is the other of the outer ring 1A and the inner ring 1B.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
A caster 1 includes a wheel 10, a fork 20, a second member 20, and a rolling bearing 40. The rolling bearing includes an outer ring 40A, an inner ring 40B, and a plurality of rolling elements. The outer ring 40A includes a first outer ring 41 and a second outer ring 42. The inner ring 40B includes a first inner ring 43 and a second inner ring 44.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
A rotary table bearing 1 includes an outer ring 10, an inner ring 20, and a plurality of rollers 30. The outer ring 10 includes a first body portion 11 and a first steel strip 12. The inner ring 20 includes a second body portion 21 and a second steel strip 22. The first body portion 11 includes a first flange portion 53 of an annular shape that contacts a first end face 31 which is an end face of the roller 30 in the axial direction. The second body portion 21 includes a second flange portion 54 of an annular shape that is located to contact a second end face 32 which is an end face of the roller 30 opposite to the first end face 31 in the axial direction. At least one of an inner circumferential surface of the inner ring 20 and an outer circumferential surface of the outer ring 10 has a gear 114 formed over an entire circumference thereof.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR.
Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR.
Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR.
R11 and R21 are the same or different from each other, and each is —OR. R12, R13, R22 and R23 are the same or different from each other, and each is hydrogen or a group —OR.
Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR.
R11 and R21 are the same or different from each other, and each is —OR. R12, R13, R22 and R23 are the same or different from each other, and each is hydrogen or a group —OR.
Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR.
R11 and R21 are the same or different from each other, and each is —OR. R12, R13, R22 and R23 are the same or different from each other, and each is hydrogen or a group —OR.
R31 and R41 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR. R32, R33, R42, and R43 are the same or different from each other, and each is hydrogen or —OCH2CH2CH(R′)CH2CH2OR. R is a linear or branched CnH2n+1, 1≤n≤20, and R′ is methyl or ethyl.
The present invention addresses the problem of providing a table guide device by which a conveyance unit is easily extracted to the outside of a closed path. A table guide device (1) comprises a base body (10), a first rail, a conveyance unit (50), and a lift unit (40). The lift unit (40) includes a slide table (41) movable along a first direction, and a second rail (441) fixed to the slide table (41). The slide table (41) moves along the first direction to enable switching between a state in which a closed path is formed by connecting a first end portion and a second end portion by the second rail (441) and a state in which the connection of the first end portion and the second end portion by the second rail (441) is released.
B65G 35/06 - Mechanical conveyors not otherwise provided for comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path
F16C 29/06 - Ball or roller bearings in which the rolling bodies circulate partly without carrying load
A linear motion guide unit includes a rail, a slider slidable relative to the rail, and rolling elements rollable in a rolling groove formed with the rail and the slider. The slider has a lubricating oil supply device provided at least at one end face thereof. The lubricating oil supply device includes a lubricating member that retains lubricating oil and abuts against a raceway surface of the rail to supply the lubricating oil to the rail, a housing having front, rear, and bottom surfaces covering front, rear, and bottom surfaces of the lubricating member, with an upper surface of the housing being left open, and a cover that covers at least an upper surface of the lubricating member. The housing is fixed to the slider with a first fixing member. The cover is fixed to the housing with a second fixing member, without being fixed with the first fixing member.
This rotary table device comprises: a foundation part; a bearing mounted to the foundation part; a table rotatably supported on the foundation part with the bearing therebetween; and motors for rotating the table with respect to the foundation part toward the rotation direction of the bearing. The table has a table groove part that is annularly formed in the outer circumferential surface along the entire circumference and is recessed in the radial direction of the bearing. The foundation part has an annular coil base that is inserted in the table groove part and is disposed along the table groove part. The motors include a first motor and a second motor. The first motor includes, on a wall surface of the table defining the table groove part, a first magnet array which is an array of a plurality of magnets arrayed along the rotation direction of the bearing, and includes, on a first surface of the coil base, a first coil array which is an array of a plurality of coils arrayed so as to face the first magnet array. The second motor includes, on the wall surface of the table defining the table groove part, a second magnet array which is an array of a plurality of magnets arrayed along the rotation direction of the bearing, and includes, in the axial direction of the bearing and on a second surface of the coil base opposite to the first surface, a second coil array which is an array of a plurality of coils arrayed so as to face the second magnet array.
H02K 16/00 - Machines with more than one rotor or stator
H02K 21/24 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
A linear motion guide unit includes a rail having first rolling surfaces extending longitudinally parallel to each other, a movable slider fitting over the rail, second rolling surfaces opposing the first rolling surfaces, respectively, rolling elements that roll while contacting the first and second rolling surfaces, a loop path through which the rolling elements circulate composed of a load-carrying race formed with the first and second rolling surfaces, a first circulation passage formed in the slider parallel to the load-carrying race, and two second circulation passages connecting the load-carrying race and the first circulation passage. The load-carrying race has a first portion at a boundary with the second circulation passage, and a contact angle of the rolling element with the second rolling surface in the first portion is greater than a contact angle of the rolling element with the second rolling surface in a remaining portion of the load-carrying race.
A linear motion guide unit includes a rail having a raceway groove extending on each longitudinal side surface, and a slider fitting over the rail and movable relative to the rail. The rail includes a first rail member and a second rail member connected to each other in a longitudinal direction at a connecting portion. The first rail member has, at least at one end, a protrusion extending in the longitudinal direction. The second rail member has, at least at one end, a notch to be combined with the protrusion. In the connecting portion, the protrusion of the first rail member is combined with the notch of the second rail member to connect the first rail member and the second rail member. The protrusion and the notch are fixed with a columnar member extending in a direction intersecting the longitudinal direction.
This rolling bearing comprises: a steel outer race; a steel inner race which has a shared center axis with the outer race and is disposed on the inner circumferential side of the outer race; and a plurality of rolling elements which are disposed so as to be capable of rolling on the inner circumferential surface of the outer race and the outer circumferential surface of the inner race. The outer race includes a first outer race, and a second outer race which is fixed to the first outer race and disposed side by side with the first outer race in a first axial direction, which is a direction in which the center axis extends. The inner race includes a first inner race, and a second inner race which is fixed to the first inner race and disposed side by side with the first inner race in the first axial direction. A protrusion is formed on one of the first outer race and the second outer race, and one of the first inner race and the second inner race, at a section thereof facing each other, and a through-hole corresponding to the protrusion is formed in the other of the first outer race and the second outer race, and the other of the first inner race and the second inner race. The protrusion and the through-hole fit with each other, and the protrusion and the through-hole are adhered to each other.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
A rolling bearing comprising: a steel outer ring; a steel inner ring having a center axis shared with the outer ring and arranged on the inner peripheral side of the outer ring; and a plurality of rolling elements arranged so as to be able to roll on the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring. The outer ring includes a first outer ring and a second outer ring fixed to the first outer ring while being arranged in alignment with the first outer ring in a first axial direction in which the center axis extends, and the inner ring includes a first inner ring and a second inner ring fixed to the first inner ring while being arranged in alignment with the first inner ring in the first axial direction. In the outer ring, protruding portions formed on one of the first outer ring and the second outer ring and through holes formed on the other in correspondence to the protruding portions are fitted with each other in a portion where the first outer ring and the second outer ring face each other. In the inner ring, protruding portions formed on one of the first inner ring and the second inner ring and through holes formed on the other in correspondence to the protruding portions are fitted with each other in a portion where the first inner ring and the second inner ring face each other. This rolling bearing is provided with slits in the periphery of any one or both of the protruding portion and the through hole.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
This follower bearing 1 comprises: a shaft member 30 that has an annular first raceway surface 11 on the outer circumferential surface thereof; an outer ring 60 that has provided to the inner circumferential surface thereof an annular second raceway surface 41 that opposes the first raceway surface 11; and a plurality of rollers 70 that are arranged on an annular raceway running along the first raceway surface 11 and the second raceway surface 41 in such a manner as to come into contact with the first raceway surface 11 and the second raceway surface 41. The outer ring 60 comprises: an annular first member 40 that is composed of steel; and an annular second member 50 that is composed of a resin and covers an outer circumferential surface 44A, 44B of the first member 40. The first member 40 comprises: a cylindrical part 42 that is formed in a hollow cylindrical shape and includes the second raceway surface; and a projection 43 that extends radially outward from the cylindrical part 42. Both sides of the projection 43 in the axial direction are filled with the second member 50.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
This is to provide an electrically-conductive lubricant having characteristics in combination that it shows liquid crystallinity in a wide temperature range, retains low dynamic friction coefficient, has electrical-conductivity, has almost no loss due to evaporation, decomposition and the like, has a clean appearance, and emits fluorescence, and can find deterioration or leakage immediately.
This electrically-conductive lubricant comprises at least one kind of the compound (1) represented by the formula (1):
2n+1, 4≤n≤12, and R′ is methyl or ethyl)].
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 20/00 - Specified physical properties of component of lubricating compositions
A lifting device (1) comprises a first base part (10), a second base part (40), a first rail (21A, 21B), a first slider (61A, 61B), a first stator module (31), a plurality of first magnets (51), a table (70), a second rail (22A, 22B), a second slider (62A, 62B), a second stator module (32), and a plurality of second magnets (52).
B23Q 1/44 - Movable or adjustable work or tool supports using particular mechanisms
B23Q 1/60 - Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only two sliding pairs only
H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping
A follower bearing 1 comprises: an inner member 10 provided with a first body 50 and a flange 52; an outer race 20; a plurality of rolling elements 40; and a first seal member 30A that has an annular first portion that forms a seal structure between at least part of the same and the outer race 20, and is disposed between an outer circumferential surface 52A of the flange 52 and a first surface 22A. The first portion has a shape increasing in outer diameter towards a first end surface 52B, which is an end surface of the flange 52 on the opposite side from a first raceway surface 51A in the axial direction.
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
F16C 19/46 - Needle bearings with one row of needles
A casing (3) has a pair of guide faces (31) that intersect with each other next to a raceway surface (22) and guide end faces (25) of a roller (5). A retainer plate (7) has a pair of intersecting guide faces (32) that are opposed to respective guide faces (21) and guide the respective end faces (25) of the roller (5). The guide faces (32) each have a tongue portion (10) projecting toward the guide face (31) of the casing (3). The tongue portion (10) elastically presses the end face (25) of the roller (5) to the guide face (31) of the casing (3) and places the roller (5) in a tilted position, thereby preventing the roller (5) from skewing.
A linear motion guiding bearing 1 comprises a rail 10, a slider 20, and a plurality of rolling elements. Formed in the slider 20 are a pair of circulation paths, which are spaces connecting one end and the other end in each of a pair of race paths, which are spaces between a pair of first rolling surfaces 41 and a pair of second rolling surfaces 42. In a cross-section perpendicular to the longitudinal direction, the rail 10 includes a bottom wall 11, a first side wall 12, a second side wall 13, and an upper wall 14. One first rolling surface 41 is configured from a wall surface 15A on the inner side of a first corner 15, which is a region where the second side wall 13 and the bottom wall part 11 are connected. The other first rolling surface 41 is configured from a wall surface 16A on the inner side of a second corner 16, which is a region where the first side wall 12 and the upper wall 14 are connected.
A rotary table (1) that comprises a base body (10), a worm wheel (21), an inner wheel (22), a plurality of rolling bodies, and a worm gear unit (30). The worm gear unit (32) includes a worm gear (31) and a worm gear housing (32). The worm gear housing (32) has an opposing surface that faces an outer circumferential surface (21B) of the worm wheel (21). The worm gear housing (32) also includes a flange part (325) that protrudes from the opposing surface and covers a side surface (215A) that, of a first gear (215) that faces the opposing surface, is on the opposite side from the base body (10) in the axial direction of the worm wheel (21).
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
F16H 1/16 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
B23Q 1/52 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only a single rotating pair
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B23Q 11/12 - Arrangements for cooling or lubricating parts of the machine
F16H 57/029 - Gearboxes; Mounting gearing therein characterised by means for sealing gearboxes, e.g. to improve airtightness
F16H 57/031 - Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
F16H 57/039 - Gearboxes for accommodating worm gears
F16H 57/04 - Features relating to lubrication or cooling
A rotary table (1) is provided with: a base body (10); a worm wheel (21); an inner ring (22); a plurality of rolling bodies; and a worm gear unit (30). The worm gear unit (30) is provided with: a worm gear (31) that is supported to be rotatable around an axis and includes a second gear (31A) engaging with a first gear (215); and a worm gear housing (32) that surrounds and supports the worm gear (31) and is fixed in such a way as to contact a supporting face via a planar contacting face. One of the supporting face and the contacting face has a cylindrical pin (33) arranged to protrude therefrom. The other of the supporting face and the contacting face has formed thereon a first concave portion (11) having a width corresponding to the pin (33) to accommodate the pin (33) and extending in the radial direction of the worm wheel (21).
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
F16H 1/16 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
B23Q 1/52 - Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only a single rotating pair
B23Q 11/00 - Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B23Q 11/12 - Arrangements for cooling or lubricating parts of the machine
F16H 55/24 - Special devices for taking up backlash
F16H 57/029 - Gearboxes; Mounting gearing therein characterised by means for sealing gearboxes, e.g. to improve airtightness
F16H 57/031 - Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
F16H 57/039 - Gearboxes for accommodating worm gears
F16H 57/04 - Features relating to lubrication or cooling
F16H 57/12 - Arrangements for adjusting or for taking-up backlash not provided for elsewhere
A linear motion guide unit has sleeves which form return passages and are formed of a high temperature resistant resin material which allows use in a high temperature environment. In the linear motion guide unit, spaces serving as grease pools are formed in the sleeves inserted into insertion holes of a carriage. The sleeves are formed of a thermoplastic resin whose heat distortion temperature is higher than 80° C. Each sleeve is formed by combining split circular members obtained by dividing a cylindrical member into two pieces along the longitudinal direction, and a plurality of grooves which become spaces are formed on the inner circumferential surfaces of the sprit circular members through cutting orthogonal to a parting plane between the split circular members.
A caster 1 is provided with a wheel 10, a fork 20, a second member 20, and a rolling bearing 40. The rolling bearing includes an outer ring 40A, an inner ring 40B, and a plurality of rolling bodies. The outer ring 40A includes a first outer ring 41 and a second outer ring 42. The inner ring 40B includes a first inner ring 43 and a second inner ring 44.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
A rolling bearing 1 is provided with an outer ring 1A, an inner ring 1B, a plurality of rolling bodies 1C, and a seal member 1D. The outer ring 1A includes a first outer ring 10 and a second outer ring 20. The inner ring 1B includes a first inner ring 30 and a second inner ring 40. The seal member 1D includes: annular base parts 61, 71, which are secured to one bearing ring, that is, a bearing ring of the outer ring 1A or the inner ring 1B; and annular protruding parts 62, 72, which protrude from the base parts 61, 71 respectively and extend toward a first region, which is a region that is on the other bearing ring, that is, the bearing ring of the inner ring 1B or the outer ring 1A, and that opposes the one bearing ring.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
A rolling bearing 1 is equipped with an outer race 1A, an inner race 1B and a plurality of rolling elements. The outer race 1A includes a first outer race 10 and a second outer race 20. The first inner race 1B includes a first inner race 30 and a second inner race 40. The grain flow 111 of the steel constituting the first outer race 10 extends along a first rolling surface 511 in a cross-section which includes a center axis R, the grain flow 211 of the steel constituting the second outer race 20 extends along a second rolling surface 512 in said cross-section, the grain flow 311 of the steel constituting the first inner race 30 extends along a third rolling surface 513 in said cross-section, and the grain flow 411 of the steel constituting the second inner race 40 extends along a fourth rolling surface 514 in said cross-section.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
Provided are: a lubricant composition that, when applied to the site of contact between metals, can suppress rust development and that can demonstrate excellent lubrication performance; and a bearing having the lubricant composition sealed therein. The lubricant composition includes at least one of two-ring liquid crystal compounds represented by formula (1), at least one of three-ring liquid crystal compounds represented by formula (2), and a halogen ion, where the content of the halogen ion is 1-900 ppm.
A rotary table bearing 1 that comprises an outer ring 10, an inner ring 20, and a plurality of rollers 30. The outer ring 10 includes a first body part 11 and a first steel strip 12. The inner ring 20 includes a second body part 21 and a second steel strip 22. The first body part 11 includes an annular first flange part 53 that contacts axial-direction first end surfaces 31 of the rollers 30. The second body part 21 includes an annular second flange part 54 that is arranged so as to contact axial-direction second end surfaces 32 of the rollers 30 that are on the opposite side from the first end surfaces 31. A gear 114 is formed around the entire circumference of one of the inner circumferential surface of the inner ring 20 and the outer circumferential surface of the outer ring 10.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
The present invention relates to a linear motion guide unit manufactured at low cost by forming at least a slider from a single metal plate, and reduced in sliding resistance of rolling elements as well as a method of manufacturing the same. The linear motion guide unit includes a guide rail, and the slider formed from a single metal plate. The guide rail has a bottom part, and a pair of longitudinal side parts standing from opposite sides of the bottom part, extending longitudinally in a mutually facing manner, and having respective raceway grooves in which the rolling elements roll. The slider includes an upper part, a pair of mutually facing sleeve parts extending downward from opposite sides of the upper part and having respective raceway grooves and return passages, and end cap parts formed respectively at opposite ends of the upper part and having turnaround grooves.
Disclosed is a rotary table device which accurately detects the position of a table rotating in relation to a bed over the entire circumference and whose assembly is facilitated by covering an armature assembly with an insulating layer for insulation between the bed and the table. In the rotary table device, a ring member having a ring scale extending over the entire circumference of the ring member is disposed around a lower part of the table having a field magnet extending over the entire circumference of the table. A sensor for reading the ring scale is disposed on the bed on which armature coils of the armature assembly are arranged in the circumferential direction to face the field magnet.
H01L 21/687 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
Provided is an electrically-conductive lubricant that possesses such characteristics as exhibiting liquid crystallinity over a wide temperature range, retaining a low dynamic friction coefficient, exhibiting electrical conductivity, being free of damages caused by evaporation, degradation, etc., having a clean appearance, and allowing immediate detection of deterioration and leakage due to fluorescent light emission therefrom. This electrically-conductive lubricant comprises at least one type of compound (1) represented by the formula (1): [in the formula, R11and R212222n2n+12n+1; 4≤n≤12; R' is methyl or ethyl); and R12, R13, R22and R232222n2n+12n+1; 4≤n≤12; R' is methyl or ethyl)].
C10N 20/00 - Specified physical properties of component of lubricating compositions
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
A swing bearing allows a reduction in thickness, weight, and manufacturing cost by fixing together a pair of split rings each formed of a plate member to form an outer ring, and fixing together a pair of split rings each formed of a plate member to form an inner ring. The outer ring is composed of a pair of split rings which are obtained by splitting the outer ring at an axially midpoint of the first raceway groove, are formed of respective plate members, and are fixed together. The inner ring is composed of a pair of split rings which are obtained by splitting the inner ring at an axially midpoint of the second raceway groove, are formed of respective plate members, and are fixed together.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
A cycloid speed reducer has a housing for accommodating a piece of equipment. Outer pins in meshing engagement with cycloid gears of a reduction gear portion are incorporated into the housing as a sliding bearing. A lubrication ring for lubricating the outer pins is slidably incorporated into the housing. The outer pins are lubricated by the outer pin lubricating ring. Inner pins are lubricated by a lubricating ring. The pair of cycloid gears are lubricated via the outer pins and the inner pins. As a result, friction between components is reduced, whereby frictional resistance decreases and durability is enhanced. In addition, the cycloid speed reducer can be manufactured as a small, compact unit.
F16H 1/34 - Toothed gearings for conveying rotary motion with gears having orbital motion involving gears essentially having intermeshing elements other than involute or cycloidal teeth
F16H 57/08 - General details of gearing of gearings with members having orbital motion
F16H 57/023 - Mounting or installation of gears or shafts in gearboxes, e.g. methods or means for assembly
F16H 1/32 - Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
In a cross roller bearing, an outer ring and an inner ring have respective mounting portions formed thereon in such a manner as to reduce the radial thickness of the bearing to thereby reduce weight. The cross roller bearing has rollers and separators disposed in a load-carrying race formed between the outer ring and the inner ring. The outer ring and the inner ring have the respective mounting portions located axially away from respective raceway surfaces. The outer circumferential surface of the outer ring and the inner circumferential surface of the inner ring are flat. The mounting portion of the outer ring does not radially protrude from the inner circumferential surface of the inner ring, and the mounting portion of the inner ring does not radially protrude from the outer circumferential surface of the outer ring.
F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
F16C 35/04 - Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
This table circulation guide device includes sliders and carriage attached to a table. In a working area, the table is guided by the sliders straddling straight track rails. In a non-working area, the table is guided by the carriages traveling on a curved track rail. An endless circulation circuit is formed by the straight track rails and the curved track rail. In the working area of the circuit, the table travels via the sliders straddling the straight track rails. In the non-working area of the circuit, the table travels via the carriages located between the sliders.
B65G 39/00 - Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
B65G 35/06 - Mechanical conveyors not otherwise provided for comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path
[Problem] To provide a table circulation guidance device wherein: sliders and a carriage are attached to a table; in a work area, the table is moved and guided by the sliders which straddle linear path rails; and in a non-work area, the table is moved and guided by the carriage which travels on a curved path rail. [Solution] A circuitous route 30 forms a continuous circulation path comprising linear path rails 2 and a curved path rail 3. In a work area 28 of the circuitous route 30, a table 1 travels via sliders 8 straddling the linear path rails 2, and in a non-work area 29 of the circuitous route 30, the table travels via a carriage 6 positioned between the sliders 8.
In the linear motion guide unit, a retainer plate for retaining rolling elements, or rollers, is prevented from deformation so as to smoothly guide the rollers. The retainer plate is composed of a retainer member, frame members fitted into respective through holes formed in the retainer member, and a fixing member disposed in a longitudinally extending recess of the retainer member. The frame members form a predetermined gap between the fixing member and a carriage. Tightening forces of fastening bolts are not applied to the retainer member, thereby avoiding deformation of the retainer member.
F16C 29/06 - Ball or roller bearings in which the rolling bodies circulate partly without carrying load
F16C 29/00 - Bearings for parts moving only linearly
F16C 17/24 - Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired conditions, e.g. for preventing overheating, for safety
B23Q 1/40 - Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using ball, roller or wheel arrangements
B23Q 1/01 - Frames, beds, pillars or like members; Arrangement of ways
A linear motion guide unit restrains fluctuations in sliding friction and generation of heat by correcting the postures of rollers having been inclined in a no-load area such that their axes become orthogonal to a guide surface of a carriage to thereby introduce the rollers in proper postures into a load area. A retainer plate of the guide unit has a guide surface for guiding end surfaces of the rollers and has protrusions protruding from the guide surface at its opposite end portions facing crownings of the carriage. The rollers rolling from a turnaround passage to a load-carrying race are pressed by the protrusions toward the guide surface of the carriage so as to be arrayed in such a posture that the axes of the rollers become orthogonal to the guide surface on the inlet side of the crowning of the carriage, whereby the occurrence of roller skew is prevented.
A linear motion guide unit prevents damage to a corner portion of an end surface of a carriage resulting from high-speed rolling of the rolling elements, and eliminates the need for strict dimensional management of facing end surfaces of the carriage and a spacer. A crowning is formed at an end portion of the carriage, and an R chamfered portion is formed at a corner of an end surface of the carriage. An R chamfered portion is formed at a corner of the end surface of the spacer. The R chamfered portions define a valley portion between the facing surfaces of the carriage and the spacer. The rolling elements roll above the valley portion while striding it to thereby be prevented from colliding against the corner portion of the end surface of the carriage, whereby damage to the corner portion of the end surface of the carriage can be prevented.
In a linear motion guide unit, in order to prevent direct collision of a roller, or a rolling element, with an end portion of a carriage, an extending portion of a spacer of an end cap is disposed at the end portion of the carriage for absorbing impact resulting from collision of the roller. The spacer has the extending portion which protrudes from the spacer at a position adjacent to an inner circumferential surface of a turnaround passage and which has a wall surface continuous from the inner circumferential surface of the turnaround passage. The wall surface of the extending portion serves as a collision receiving surface for receiving a colliding roller. The carriage has a housing recess which is formed at an end of a raceway groove thereof and to which the extending portion is fitted.
A curvilinear rolling guide unit allows a slider to readily straddle an endless guide rail and can prevent leakage of lubricant from a lubrication hole formed in each end cap. Each end cap is composed of an end cap body and a spacer. The end cap body has a lubrication hole, a lubrication groove, a slit which are formed in an upper portion thereof. The lubrication groove establish communication between the lubrication hole and turnaround passages. The slit extends from the lubrication hole to the under surface of the upper portion. A lubrication plug is fitted into the lubrication hole of the end cap body, closes the slit, and has a hole formed therein and serving as a lubrication passage communicating with the lubrication groove.
In a finite linear motion guide unit, a retainer for retaining rollers rolling between guide members is formed into a V-like shape to thereby increase a rated load. A first guide member is formed into a V-like concave form, and a second guide member is formed into a V-like convex form. Needle rollers are retained by the V-shaped retainer and roll on a raceway formed by facing surfaces of the guide members. The V-shaped retainer includes a pair of roller retainer plate portions for retaining the needle rollers, and a retainer connection portion. A retainer straying prevention mechanism is composed of a pinion disposed in a cross-opening, and racks disposed on the guide members and meshing with the pinion.
A linear motion guide unit includes a guide rail and a slider. A carriage of the slider has a central portion located above the guide rail, and wing portions which extend downward from widthwise opposite ends of the central portion. Shoulder portions of the carriage located in inner boundary regions between the central portion and the wing portions of the carriage have first inclined surface so that the shoulder portions have padding portions. Corner portions of the guide rail located between an upper surface and longitudinal sides of the guide rail have second inclined surfaces which face the first inclined surfaces of the carriage and extend in the longitudinal direction parallel to the first inclined surfaces. The first inclined surfaces have an inclination angle substantially the same as an inclination angle of the nose surfaces of threaded holes formed in the carriage for attachment of a counterpart member.
A curvilinear motion rolling guide unit is such that pipe members adapted to form return passages are disposed respectively at undercuts of wings of an arcuate casing, thereby reducing working costs. A slider has a casing and end caps fixed to respective opposite ends of the casing. Pipe members adapted to form return passages are disposed at the respective undercuts formed on the wings of the casing. Cover members have longitudinally extending grooves, respectively, for covering the pipe members. Fitting grooves formed at opposite ends of the grooves of the cover members are fitted to direction changing passages provided in the respective end caps, whereby the cover members are fixed to the end caps.
A multi-articulated manipulator is operated without rickety movement by a pair of grasping members, springs for the grasping members, and other springs extended across the foremost outer shell and the basement outer shell. The manipulator is small in size, easy to handle, reliable, better response and high precision in medical applications. With the multi-articulated manipulator, the foremost outer shell is connected to the basement outer shell in a bending manner. A pair of grasping members of claw members is connected to the foremost end of the foremost outer shell. The claw members are operated with a pair of claw power-transmission shafts and energized with springs to be biased towards their closed situation. The foremost outer shell and the basement outer shell are operated with claw power-transmitting shaft and normally biased by springs towards their closed situation.
A small-sized finite linear motion guide unit is provided in which there is provided a rack-and-pinion arrangement to prevent any discrepancy between retainer plates to make sure of relative sliding movement of guideways. A rack is composed of teeth portions and a pair of connecting bars to fasten the teeth thereon. The connecting bars are different in widthwise length to form asymmetrical shapes. The grooves for a rack made on the guideway includes a middle groove to get the rack to mate with the pinion, and sidewise grooves lying on both sides of the middle groove and having the connecting bars different in widthwise length to make an asymmetric shape.
A slider is composed of four components except for rolling elements. A slider moving relatively to a guide rail is composed of a carriage having raceway grooves, a circulator to make a return passage and insert nuts to fit into through-holes in the circulator. Engaging parts of the carriage makes fit-engagement with holes in the circulator to make snap-fit between the carriage and the circulator to fasten them each other.
A multi-articulated manipulator composed of more than one hollow outer shell, joints to connect the outer shells to each other, a grasping member fastened for rotating movement with respect to the proximal outer shell, a claw transmission shaft to actuate the grasping member to rotate and an outer shell power transmission shaft to actuate the outer shells in to rotate independently from each other. The claw transmission shaft and the outer shell power transmission shaft respectively are composed of universal joints capable of rotating force and transmitting torque.
A ball spline shaft integral with a foremost and rearmost nozzle fits into a movable table for an actuator to make sure of high accuracy and high tact operation. A movable table is constituted with a movable table in which a ball spline shaft to provide a ball spline is inserted into a table body. The ball spline shaft having a through-hole has a foremost nozzle at the lower portion thereof and a rearmost nozzle at the top thereof. An outer shell is fastened to the opposite ends of the bed and the ball spline shaft is supported by a pair of the outer shells for reciprocating movement.
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
This multi-articulated manipulator is rich in reliability and follow-up property in medical applications. The multi-articulated manipulator is composed of more than one hollow outer shell, joint members to connect the outer shells each other, a grasping member fastened for rocking movement to the foremost outer shell, and a power transmission shaft to actuate the grasping member and the outer shell in a bending manner independently from each other. The power transmission shaft is composed of a universal join allowed to bend independently from each other and transmit the rotating torque, and a transmission shaft capable of making expansion and shrinkage and able to transmit rotating torque. The power transmission shaft at the foremost end thereof has male threads mating with the nut made at the boss portion inside the outer shell.
A wear-proof tester to evaluate an anti-frictional performance of surface treatment carried on a needle cage. The needle cage is subjected to flex under the centrifugal force of composite revolution and rotation. Wear-proof test of surface treatment is carried by sliding contact between the outside circular surface of the retainer and the inside circular surface of the outside wheel. The retainer with no roller is fastened on a rotary shaft with leaving a clearance between them. A radial load is applied to retainer through a test outside wheel to get the retainer flexed to make sliding contact over a predetermined area between the outside circular surface of the retainer and the inside circular surface of the outside wheel. This wear-proof tester is applicable to the wear-proof tests of various materials other than the wear-proof test of the retainer made of various materials.
End rings fit over the opposite ends of the retainer inserted in the outer sleeve to keep properly the retainer against either of rotational and axial directions. End rings fit over the opposite ends of the retainer extending out of the outer sleeve to make abutment against the outer sleeve to cover the outside peripheries of the retainer. The circular groove of the retainer is composed of the raceway groove having the raceway surface with the slit, the return passage lying in parallel with the raceway groove and a pair of turnaround passages to intercommunicate between the raceway groove and the return passage. The end rings are kept in angular location against rotation by means of engagement between the first projections at the opposite ends of outer circular groove of the retainer and the second projections in the inside circular grooves of the end rings. The outer sleeve is to keep the retainer in lengthwise direction.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Machine elements (excluding those for land vehicles); shafts
being parts of machines; bearings; shaft couplings. Shafts for land vehicles; bearings for land vehicles; shaft
couplings for land vehicles.
An actuator is composed of a frame having a guide rail thereon and a slider movable relative to the frame by means of a ball lead screw. Lubrication of the ball lead screw is carried out by a lubricating member installed in the slider. A first lubricating member has an applicator nose which comes into sliding contact with a helical groove around the ball lead screw and a second lubricating member makes close contact with the first lubricating member to supply lubricant to the first lubricating member. The first and second lubricating members fit together in a recess made at one end of the slider major body. Both the first and second lubricating members have C-shaped contour. The first and second lubricating members lying in close engagement with each other are received in a recess in the end of the slider major body and held there with a presser plate which is secured using fastening screws.
F16H 3/06 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion with worm and worm-wheel or gears essentially having helical or herring-bone teeth
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
F16H 57/04 - Features relating to lubrication or cooling
