[Problem] Providing is a three-dimensional molding method wherein in three-dimensional molding of a part to be produced, support material and test piece, the test piece either supports the part to be produced, or is joined with the support material supporting the part to be produced, thereby allowing efficient molding and efficient utilization of the powder, and three-dimensional molded articles obtained by the method are also provided. [Solution Means] The object is achieved by a three-dimensional molding method in which both a support material 2 and a test piece 3 are separately joined to partial regions of a part to be produced 1, which is molded by dispersion of a powder by traveling of a squeegee and sintering of the powder by irradiation of a laser beam or an electron beam, or the test piece 3 is separately joined to a plurality of the support materials 2, or the test piece 3 is joined to a partial region of the part to be produced 1 to mold the support material 2 and the test pieces 3 in the same step.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
One object is to remove sludge from a coolant that is discharged from a machine tool and that includes the sludge. In a tank for the discharged coolant, a clean layer after removal of chips and relatively large sludge by means of a filter is further divided by partition plates 21 and 22 and a boundary wall 23 into a first reservoir on an upstream side of the boundary wall 23 and a second reservoir on a downstream side of the boundary wall 23. The coolant including fine sludge that is not removed by the firster is retained in the first reservoir, so that the sludge precipitates or stays in the coolant. The boundary wall 23 is configured to have a height that is lower than the heights of the partition plates 21 and 22 and thereby allows only a supernatant of the coolant that contains almost no sludge to flow out from the first reservoir to the second reservoir. This configuration enables the fine sludge to be effectively removed from the coolant.
[Purpose] To provide a three-dimensional shaped product and a method for producing the same, targeting a lattice region with a uniform shape and firm bonding, and an outer frame region disposed around the entire outer periphery of the lattice region. [Solution Means] A method for producing a three-dimensional shaped product based on repetition of a step of molding of a powder layer 3 and sintering with a laser beam or an electron beam, wherein in a lattice region 1, a sintered layer 41 is molded by scanning the beam having a predetermined spot diameter several times in one side direction at a predetermined interval, after which a sintered layer 42 is again molded by the same scanning in the other side direction which crosses the one side direction, and in an outer frame region 2, a continuous sintered layer 43 is molded by scanning the beam having the predetermined spot diameter over the entire lattice region 1 that is surrounded by an inner line and an outer line, and is also achieved by a three-dimensional shaped product obtained by the method.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/00 - Data acquisition or data processing for additive manufacturing
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
4.
THREE-DIMENSIONAL SHAPING METHOD AND THREE-DIMENSIONAL SHAPING APPARATUS
A construction is provided for allowing three- dimensional shaping by two-dimensional scanning. The three-dimensional shaping method and apparatus employs a plurality of galvano scanners that scan laser beams along two-dimensional directions on orthogonal coordinates or cylindrical coordinates by reflection from first mirrors that oscillate on a rotation axes perpendicular to the laser beams transmitted through dynamic focus lenses, and second mirrors oscillating on a rotation axes perpendicular to the rotation axes of the first mirrors along a horizontal direction. The oscillation ranges are adjustable by an oscillation control with selectable regions on a sintered surface at focal points of the laser beams irradiated in slanted directions with respect to a surface of a table, or locations in their vicinity.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
[Problem to be Solved] Providing a machine tool operation monitoring system that identifies a machine tool breaking out an operation abnormality without requiring any special accurate distinguishing signal. [Solution] A machine tool operation monitoring system which detects an abnormal operation of a machine tool 1 and in which when the operation of each machine tool 1 exceeds a normal operating range of each machine tool 1 and/or when moving state of a constituent portion of the machine tool 1 and a material exceeds a normal range, wherein the machine tool 1 breaking out an operation abnormality is identified to solve the problem by any one of the following operations: a. monitoring an image obtained by projecting reflected light from a reflecting display plate 22 provided for each machine tool 1 onto a camera 31; and b. monitoring a difference in projecting direction of emitted light from a lamp 21 provided for each machine tool 1 onto an optical sensor 32. [Selected Drawing] FIG. 1
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
6.
METHOD FOR PRODUCING A THREE-DIMENSIONAL SHAPED PRODUCT
Providing a method to achieve suction of fumes without disturbance to irradiation by a laser beam or an electron beam. [SOLUTION MEANS] A method for producing a three-dimensional shaped product based on dispersion of powder by a squeegee and irradiation of the powder layer 3 with a laser beam or electron beam, wherein the aforementioned problem is solved by installing a suction device 4 that suctions fumes generated from the powder layer 3, with state surrounding the entire periphery of a shaping table 1, and working the suction device 4 in the full irradiation time, or selecting a suction reference position 42 at the shortest distance from the irradiation reference position P currently moved and worked in a prescribed time range, or selecting each suction reference position 42 present in the direction opposite from the traveling direction of the irradiation reference position P and worked in a prescribed time range.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/255 - Enclosures for the building material, e.g. powder containers
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
7.
METHOD FOR PRODUCING THREE-DIMENSIONAL SHAPED PRODUCT BY JOINING TOP UNDERCUT REGION AND BOTTOM INTERIOR SPACE-FORMING REGION
A method for producing a three-dimensional shaped product having an undercut region on an upper side and an interior space-forming region at a lower side, by forming laminated layers of powder, sintering the laminated layers, and at least cutting sintered layers of the interior space-forming region wherein a bottom edge opening of the undercut region and a top edge opening of the interior space-forming region are joined with each other, and it is avoided to cut the top edge opening along the horizontal direction and upper side position for the top edge opening of the final stage along the horizontal direction.
B29C 64/147 - Processes of additive manufacturing using only solid materials using sheet material, e.g. laminated object manufacturing [LOM] or laminating sheet material precut to local cross sections of the 3D object
8.
SHAPING METHOD FOR THREE-DIMENSIONAL SHAPED PRODUCT
[Purpose] Using powder efficiently and improving squeegee working. [Solution Means] A method for a three-dimensional shaped product employing following processes after formation of powder layers on the top side of a shaping table 1 and sintering by a beam. 1. Setting a traveling distance of a squeegee not to reach a chamber wall section. 2. Establishing positions of wall layers by connecting with both ending positions at the chamber wall sections or by connecting with the ending positions on a powder feeder side with a state surrounding a region to be sintered. 3. Forming powder layers by the traveling distance of 1. 4. Forming sintered layers and wall layers by irradiating the beam by 2 and 3. 5. Repeating 3 and 4.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
A method for a three-dimensional shaped product by forming powder layers on the top side of a shaping table and sintering by a beam and performing the steps of: setting a traveling distance of a squeegee not to reach a chamber wall section; establishing positions of wall layers by connecting with both ending positions at the chamber wall sections or by connecting with the ending positions on a powder feeder side with a state surrounding a region to be sintered; by forming in a direction diagonal to the traveling direction of the squeegee, or in an elliptical arc shape or arc shape with a center position of the shaping table as a center; forming powder layers by the traveling distance; forming sintered layers and wall layers by irradiating the beam; and repeating the steps of forming the powder layers and forming the sintered layers.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
10.
SHAPING METHOD FOR THREE-DIMENSIONAL SHAPED PRODUCT
[Purpose] Using powder efficiently and improving squeegee working. [Solution Means] A method for a three-dimensional shaped product employing following processes after formation of powder layers on the top side of a shaping table 1 and sintering by a beam wherein width between an ending position of the sintered layers on a side furthest from the powder feeder and an inner surface of the wall layers nearest to the powder feeder is about a width of cut on a surface of the sintered layers; 1. Setting a traveling distance of a squeegee not to reach a chamber wall section, 2. Establishing positions of wall layers by connecting with both ending positions at the chamber wall sections or by connecting with the ending positions on a powder feeder side with a state surrounding a region to be sintered, 3. Forming powder layers by the traveling distance of 1, 4. Forming sintered layers and wall layers by irradiating the beam by 2 and 3, 5. And repeating 3 and 4.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
[Purpose] To provide a three-dimensional shaping method based on efficient and reasonable steps, where setting of a cutting allowance is assumed. [Solution Means] The object can be achieved by a three-dimensional shaping method wherein the following steps are carried out, after a lamination step, in which the steps of forming a powder layer, flattening with a squeegee and sintering are repeated, is followed by cutting of the surface of the laminate. 1. Setting the overall shape of an object to be shaped 1 by a CAD/CAM system, and setting machining units 11 that form the overall shape and cutting allowances 2 on peripheral sides and upper sides of each of the machining units 11. 2. Cutting of the peripheral sides and upper sides according to a prescribed order, after lamination with addition of a cutting allowance 2 on the peripheral sides of each machining unit 11, and after carrying out lamination to the thickness of the cutting allowance 2 on the upper side of the machining unit 11 and the machining unit 11 adjacent above the machining unit 11. 3. Continuing repetition of step 2, from the lowest machining unit 11 to the topmost machining unit 11.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
A cutting tool which forms cutting edges by a plurality of side surfaces on both sides raised at a side portion along a longitudinal direction is provided with such a configuration that a coolant is supplied to a wide area of a side surface on a rotating direction side to achieve efficient cooling of the cutting edges and removal of chips from the cutting edges. [Solution Means] A cutting tool 1 has cutting edges 2 formed by a plurality of side surfaces on both sides 21, 22 raised at a side portion along a longitudinal direction, and the cutting tool 1 in which a coolant passage pipe 30 is extended around a rotation center axis 5, and coolant passage pipes 31 branched from the extended coolant passage pipe 30 are projected along a direction of a raised side surface 21 on a rotating direction side of the raised side surfaces on both sides 21, 22.
[Purpose] To provide a cutting tool which has a cutting edge equipped with a helically curved groove and which is configured so as to enable efficient cooling and efficient removal of chips by coolant. [Solution Means] A cutting tool 1 comprising, cutting tool has a cutting edge equipped with a helically curved groove 2 at a side outer periphery in the longitudinal direction, and in the cutting tool, a coolant passage pipe 3 extended internally is communicatively connected with ejection holes 4 of coolant arranged inside the groove 2 by way of a coolant passage pipe 31 branched from the coolant passage pipe 3 extended around a rotation center axis along the longitudinal direction or along the helically curved groove.
[Purpose] To achieve efficiently forming powder layers by improving the squeegee sliding speed in a three-dimensional object shaping method. [Solution Means] A three-dimensional object shaping method comprising: a powder layer forming step, sliding step of a squeegee on the supplied powder, and a sintering step of irradiating the powder layer, are successively repeated, wherein after dividing shaping regions into a plurality of laminating units, each laminating unit of the plurality of laminating units are divided into inside region including the maximum prearranged sintering region, and outside region not including the maximum prearranged sintering region, and wherein the squeegee sliding speed in the outside region is set to be greater than the sliding speed in the inside region.
A three-dimensional shaping method utilizing a powder layer forming step, and a sintering step in which the powder layer is sintered with a laser beam or electron beam by the following operations for rapidly detecting sintering defects, (1) Measuring intensity of reflected beam from sintered surface, (2) Commanding to cancel sintering in the case that reflected beam deviates from the standard range, (3) Taking special images for reflected beam of above (2) or recording reflection intensities at the sintering region with deviated state of above (2), (4) Judging the cause of the sintering defect according to whether images of (3) or intensities of (3) changes rapidly or not.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
To provide a pallet changing apparatus comprising a rising portion which has a pivoting center axis at a leading end of a table that supports a workpiece so as to pivot by way of a pallet and moves back and forth in relation to a turning shaft. The apparatus adopts a table that is able to move back and forth in relation to a turning shaft and has a oscillating portion for placing workpieces W, W' by way of pallets P, P' so as to oscillate freely by means of a rising portion at the leading end of the table, and a bridging extending portion which bridges supporting portion of pallet P or P' in a pallet changing arm with the both sides of the turning shaft forms a shape of covering across upper side of the rising portion at a stage of the table transferring pallet P.
B23Q 7/00 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
B23Q 41/02 - Features relating to transfer of work between machines
B65G 61/00 - Use of pick-up or transfer devices or of manipulators for stacking or de-stacking articles not otherwise provided for
To provide a compact configuration, a pallet changing apparatus adopts a table capable of moving back from and forth for a side of a turning shaft and has a oscillating portion for placing workpieces by means of pallets so as to oscillate freely by means of a rising portion at the leading end of the table. The turning shaft covers a turning supporting portion at its lower end side and turns together with a pallet changing arm and moves freely in a vertical direction. An insertion and removal hole is provided, at the covering region, and allows the rising portion to be inserted into the insertion and removal hole and removed from the insertion and removal hole.
B23Q 7/00 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
B23Q 41/02 - Features relating to transfer of work between machines
B65G 61/00 - Use of pick-up or transfer devices or of manipulators for stacking or de-stacking articles not otherwise provided for
A method for supplying cutting oil by adopting the following processes in a machine tool for cutting work pieces: 1: retaining cutting oil in a minimum reference quantity or an initial reference quantity in the cutting-oil tank 1, 2: measuring a supply quantity per unit time q of the cutting oil flowing out from the cutting-oil tank 1 and supplied to a cutting area 2 of work pieces, 3 (1): supplying the cutting oil to the cutting-oil tank 1 by a quantity per unit time q' larger than q and the supply is stopped in the case of the cutting-oil tank is fulfilled, and said supplying and said stopping is repeated according to necessary state, or (2): supplying the cutting oil to the cutting-oil tank 1 by a quantity per unit time equal to the supply quantity per unit time q.
A method for supplying cutting oil which is able to attain the above object by adopting the following processes in a machine tool for cutting work pieces. a. setting of individual cutting times to each work piece and selection of cutting oil to be used, b. setting of a quantity of the cutting oil supplied per unit time to a cutting area where the cutting oil selected by the process a is used, c. supplying the cutting oil to a cutting-oil tank, with a state kept that the cutting oil remains in the cutting-oil tank, and d. supplying the cutting oil to the cutting area on cutting each of the work pieces by setting a quantity of the cutting oil as a quantity obtained by multiplying individual cutting times according to the process a with a cutting quantity per individual unit times according to the process b.
To provide, a three-dimensional molding method for molding of an object to be molded and a support structure that is to support the object from below, a construction such that the support structure is efficiently removed from the object to be molded and base plate after molding, and virtually no hindrance to movement of the squeegee is produced. [Solution Means] A three-dimensional molding method in which a step of sintering a powder layer with a laser light or an electron beam after a flat surface has been formed by sliding of a squeegee against the powder layer is repeated in a prescribed number of times, and then the periphery is cut, in order to mold both the object 1 to be molded and a support structure 2 that supports the lower side of the object 1 from below and is intended to be removed after molding, wherein in the support structure 2, the upper parts of the struts 20 connected to the object 1 to be molded employ truncated circular conic shapes or partial truncated circular conic shapes that are reduced in diameter toward the top.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
A method is provided for three-dimensional molding of an object and removing a support structure from below the object after molding without hindering movement of a squeegee. A powder layer is sintered after a flat surface is formed by repeatedly sliding a squeegee against the powder layer, after which a periphery is cut for molding and removing the object. A lower side of the object is supported by a support structure. The support structure has upper struts with truncated circular conic shapes or partial truncated circular conic shapes, a middle partition plate that supports upper struts and lower supporting members supporting the middle partition plate.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/47 - Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
A three-dimensional shaping apparatus comprising a shaping table, a squeegee, a sintering device and a cutting device, wherein the apparatus is provided with transport pathways for discharging metal powder and fumes to an outer side of a shaping tank, and discharging metal powder not forming the laminated layer to an outer side of a chamber and the transport pathways are provided with a compressor injecting inert gas that does not react with the metal powder at an inlet of each of the transport pathways, and/or is provided with a suction device sucking the inert gas at an end of the each transport pathways, and therefore achieves supply of the inert gas and transport of the metal powder and the fumes in the transport pathways all at once.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
23.
METHOD FOR SETTING A SHAPING ANGLE IN THREE-DIMENSIONAL SHAPED OBJECT
A method for setting shaping angles in a three-dimensional shaped product including steps of laminating, irradiation-based sintering and cutting is provided. The method includes steps by a CAD/CAM system, such as setting a model for the product; selecting a standard of undercut angle; rotating the model in angle units; calculating the total projected area on the horizontal plane of the undercut regions among the undercut regions whose angles crossing the plane are smaller angles than the undercut angle; and selecting a rotation angle such that the total area is smallest or a standard value is reached. When a minimum total area in the selecting step is larger than the standard value or all of total area in the calculating step is larger than the value, a command is sent to set a shaping region of a section for supporting the undercut region.
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
24.
SUPPORT AND METHOD OF SHAPING WORKPIECE AND SUPPORT
[Purpose] Providing a support for supporting a workpiece from below efficiently with reducing the amount of necessary materials , and providing a shaping method for shaping the workpiece and support efficiently. [Solution for Problem] This is achieved by adopting a hollow state support 1 for supporting a workpiece 2 from below has a lattice form with crossing of straight linear or curved columnar bodies, wherein a sintered strength at a connecting region with the workpiece 2 is lower than the sintered strength at the other regions for solving the problem.
[Purpose] To provide a three-dimensional shaping method that allows defects in three-dimensional shaped products to be avoided, by rapidly detecting sintering defects. [Solution Means] A three-dimensional shaping method utilizing a powder layer forming step, and a sintering step in which the powder layer is sintered with a laser beam or electron beam, the method accomplishing the aforementioned purpose by the following operations. a. Measuring the width of the spark forming region generated on the sintering surface is photographed, and the light intensity of sparks, b. commanding to continue sintering within the next time unit or the next powder layer forming step, when it has been detected that the region width and light intensity of the process a are within the standard ranges for a given time unit, c. commanding to cancel sintering in the next time unit or the next powder layer forming step under judging that a sintering defect has occurred, when it has been detected that a condition has occurred in which the region width and light intensity of the process a deviate from the standard ranges for a given time unit.
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
26.
CUTTING METHOD FOR INNER CIRCUMFERENTIAL FACE OR OUTER CIRCUMFERENTIAL FACE OF WORK
A cutting method is provided for an inner circumferential face or an outer circumferential face of a work using a cutting tool projecting from a main shaft which turns around a predetermined position serving as a center and for which a turning radius is adjustable. The method comprises the step of in the case that a turning angular velocity of the main shaft is represented as .omega., a distance from a turning center to a tip of the cutting tool is represented as R, and a cutting velocity of the tip of the cutting tool is set to a constant value C, making the cutting velocity of the cutting tool constant by performing control such that co changes in association with a change in the distance R so that .omega.=(C2 -R2)1/2 /R is denoted ,where R denotes a time differential of the distance R.
B23B 5/36 - Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes
A three-dimensional shaping device and a three-dimensional shaping method are described. In the three-dimensional shaping device, a region of an elevatable/lowerable table for forming a powder layer and a vicinity thereof and a region of a powder supply device and a vicinity thereof are divided by a shield plate, an inert gas injection port is provided in the former region, the shield plate is made so as to be freely opened or closed so that a powder spraying squeegee traveling on the table is passed through, or a pipe which supplies powder from the powder supply device to the powder spraying squeegee which has traveled to the side of the shield plate penetrates through the shield plate, and a sintering device is provided which applies a laser beam via a transparent region in a ceiling of a chamber.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
[Problem] An object is to provide a configuration in which, in a three-dimensional shaping method, the thickness of each multilayer unit is appropriately set according to the degree of variation in the cross section of a shaped object in a horizontal direction along a height direction. [Solution Means] In order to achieve the above object, a three-dimensional shaping method is provided in which a step of forming a powder layer and a step of sintering the powder layer by the application of a moving laser beam or a moving electron beam are alternately repeated to perform a multilayer operation within a container, where a plurality of equal-width divided regions 2 are set in a multilayer region 4 along a height direction, and then the number of multilayers N in each of equal-width divided regions 2 which can reflect the degree of variations, according to the degree of variations in the shape of the cross section 3 of a boundary on the upper side and the shape of the cross section 3 of a boundary on the lower side in each of the equal-width divided regions 2, and furthermore, the thickness of each multilayer unit in each of the equal-width divided regions 2 is selected, and moreover the coordinates of an outer periphery 6 in each of the cross sections 3 of the number N are set.
B29C 64/188 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/386 - Data acquisition or data processing for additive manufacturing
A mold for resin injection molding 1 having a shaping region formed by a low-density shaped portion 22 and a high-density shaped portion 21 in which each ventilation channel 32 for gas existing between external region and molding portion region forms a hollow state with situation surrounded by a peripheral wall having any one or both of the high-density shaped portion 21 and the low-density shaped portion 22, and the secondary vent 33 connecting communicatively with a region molding portion is formed only by a low-density shaped portion 22 with thickness thinner than that of the shaping region.
A three-dimensional shaping method in which the powder supplying blade 2 is able to travel without any problems, comprising that a control system stores in advance a fine sintered region 11 so that any one of a cross-sectional area or a mean diameter in the horizontal direction, a shaping width and an undercut angle at the end is equal to or less than a predetermined extent, or the control system makes a determination in a sintering step, for said each element, so in the case of the raised sintered portions 12 forming on the upper side of the sintered region 11, a rotating cutting tool 3 cuts the raised sintered portions 12 entirely or partially, thereby achieving the object .
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/188 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
31.
CUTTING METHOD FOR INNER CIRCUMFERENTIAL FACE OR OUTER CIRCUMFERENTIAL FACE OF WORK
A cutting method for an inner circumferential face or an outer circumferential face of a work using a cutting tool projecting from a main shaft which turns around a predetermined position serving as a center and for which a turning radius is adjustable, wherein a table that supports the work is set in a rotating central axis that is coaxial with a turning central axis of the main shaft, and the table is rotated in a direction opposite to a turning direction of the main shaft to summate a cutting velocity. The cutting method allows a summation to the cutting velocity under simple control.
A vibration stop device, in which a plurality of holding parts for vibration stop holds an outer circumferential surface of a columnar work in a process stage under pressure contact state with pressure, and a pressure contact position on the outer circumferential surface is changed by rotation of the work, wherein the holding parts for vibration stop each have an arc shaped surface on the pressure contact side, and a radius of curvature of the object is the same as a radius of the non- processing region.
F16F 15/00 - Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
F16F 15/023 - Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system using fluid means
F16F 15/16 - Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid
An object of the present invention is to provide a structure of a tail stock moving mechanism, in which a tail stock that holds a work with a predetermined pressure force is moved by means of a ball screw and in which control required for holding the work with the predetermined pressure force is implemented. The above object for the moving type tail stock is accomplished in predetermined order wherein, in a step at which the tail stock 1 that hold a position of the work 5 and that is supported by a ball screw 2, torque generated by a drive motor 3 that drives the ball screw 2 is detected, and in a step at which the torque reaches a predetermined reference value, and then operation of a brake 4 to limit rotation of the ball screw 2 and cutting off of an input from a power supply to the drive motor 3 are performed.
An object of the present invention is to provide a structure of a tail stock moving method, in which a tail stock that holds a work with a predetermined pressure force is moved by means of a ball screw and in which control required for holding the work with the predetermined pressure force is implemented. The above object for the moving type tail stock is accomplished in predetermined order wherein, in a step at which the tail stock 1 that hold a position of the work 5 and that is supported by a ball screw 2, torque generated by a drive motor 3 that drives the ball screw 2 is detected, and in a step at which the torque reaches a predetermined reference value, and then operation of a brake 4 to limit rotation of the ball screw 2 and cutting off of an input from a power supply to the drive motor 3 are performed.
Laminate molding equipment 1 includes a molding part 2 provided with a molding table 23 on which a three-dimensional shape molded object is molded, a powder layer forming part 3 configured to supply material powder on the molding table 23 to form a powder layer M, a light beam radiating part 4 configured to radiate a light beam to the powder layer M laminated on the molding table 23 and select region to form a solidified layer, and a control part configured to control operation of the respective parts, wherein the control part 5 recognizes a moldable region on the powder layer M already formed while the powder layer forming part 3 starts forming one powder layer and completes forming the one powder layer, and radiates the light beam in the moldable region. As a result, molding time can be shortened by starting the light beam radiation without waiting for completion of the powder layer.
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
In metal powder processing equipment where metal powder is sequentially laminated on a table of a chamber and laser beam melting or electron beam melting is performed or cutting and shaping are performed by a rotating tool subsequent to the melting, a first temperature adjusting unit is placed at a lower bottom portion of the table and a second temperature adjusting unit is disposed with the state of contacting to said outer wall around all outer wall of the chamber and both units are simultaneously heated or cooled. Further, a room partially enclosing a metal powder reserve tank and a metal powder supply pipe is provided with a third temperature adjusting unit, and temperature of the third temperature adjusting unit is set to average temperature of the second temperature adjusting unit before the second one actuates. Consequently, deterioration of dimensional precision in processing and deterioration of metal powder quality can be prevented by keeping heating temperature constant.
C23C 24/10 - Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
In metal powder processing equipment where metal powder is sequentially laminated on a table inside a chamber and laser beam melting or electron beam melting, and shaping by a cutting tool subsequent to the melting are performed, unmolded powder remaining at the time of the melting and cut powder generated by the cutting can be scattered by generating air flow with respect to the cutting tool from either side of a main shaft or a tool holder. As a result, life of the cutting tool is prolonged and quality of a cut surface can be improved.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B08B 15/04 - Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
B22F 3/24 - After-treatment of workpieces or articles
Three-dimensional molding method includes powder supply equipment 40 configured to supply powder material and form a powder layer, and a light beam scanning step configured to radiate a light beam to the powder layer and move a radiated location thereof, where a three-dimensional shaped molding object is manufactured by alternately repeating processes of forming the powder layer and sintering the powder layer with light beam radiation. In the three-dimensional molding method, a region used for manufacturing the three-dimensional shaped molding object is divided into a plurality of divided regions A, B, C, D, and radiation is executed by a plurality of the light beam scanning units 20 to the respective plurality of divided regions A, B, C, D simultaneously, thereby improving molding efficiency.
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
39.
THREE-DIMENSIONAL MOLDING METHOD FOR MANUFACTURING THREE-DIMENSIONAL SHAPED MOLDING OBJECT
Three-dimensional molding equipment configured to alternately repeat a laminating process of forming a powder layer by powder supply equipment 40 and a sintering process of radiating a light beam or an electron beam to the powder layer by a light beam or an electron beam scanning equipment 20 and further moving a radiated location with respective predetermined moving unit set by a central control unit, namely, a computer related to control of a controller 30, to sinter the powder layer, wherein a plurality of the light beam or electron beam scanning equipment 20 are provided, and a plurality of the light beams or electron beams by the plurality of light beam or electron beam scanning equipment 20 is radiated on the same powder layer, and further the radiated locations by the plurality of the light beam or electron beam scanning equipment 20 are synchronously moved in increments of moving unit.
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
40.
THREE-DIMENSIONAL MOLDING EQUIPMENT AND METHOD FOR MANUFACTURING THREE-DIMENSIONAL SHAPED MOLDING OBJECT
Three-dimensional molding equipment configured to alternately repeat a laminating process of forming a powder layer by powder supply equipment 40 and a sintering process of radiating a light beam or an electron beam to the powder layer by a light beam or an electron beam scanning equipment 20 and further moving a radiated location with respective predetermined moving unit set by a central control unit, namely, a computer related to control of a controller 30, to sinter the powder layer, wherein a plurality of the light beam or electron beam scanning equipment 20 are provided, and a plurality of the light beams or electron beams by the plurality of light beam or electron beam scanning equipment 20 is radiated on the same powder layer, and further the radiated locations by the plurality of the light beam or electron beam scanning equipment 20 are synchronously moved in increments of moving unit.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
41.
PALLET CHANGING SYSTEM AND MACHINING CENTER EQUIPPING THE SYSTEM
An object of the present invention is to provide a pallet changing system which utilizes the moving function itself of a machine head at a machining center for conveying a pallet and a configuration of a machining center equipping the system. There is provided a pallet changing system in which a machine head 2 for machining a workpiece may be combined with a pallet changing unit 1 having a pallet changing arm 11 which can be rotated by a motor 13 and then allowed to move, by which a pallet 3 is conveyed, and the pallet 3 for changing is changed with the pallet 3 gripped by a pallet clamping device 4 by turning the pallet changing arm 11, thus attaining the above object, and a machining center which equips the above system and also machines a workpiece by using the machine head 2.
An object of the present invention is to provide a configuration of an apparatus for producing a three-dimensional shaped product capable of decreasing thermal dissipation due to thermal conduction of a heating device or a cooling device loading a base plate, and the apparatus for producing a three-dimensional shaped product in which powder 12 is sequentially sintered on a table 2 and a base plate 3 inside a shaping tank 1, wherein a space or a space filled with insulating materials of vertical direction is formed on the table 2 , and under a heating device or a cooling device 8 on which the base plate 3 supporting the sintered layer is placed, thereby attaining the above object.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
43.
METHOD FOR PRODUCING ARTIFICIAL BONE AND ARTIFICIAL BONE PRODUCED BY THE METHOD
A method for producing an artificial bone capable of accurate molding at a joined part with appropriate strength in which electromagnetic waves or electron beams are irradiated to a layer of one or more types of powder selected from metal biomaterials, ceramics for the artificial bone and plastic resins for the artificial bone based on image data corresponding to a shape of the artificial bone , thereby effecting sintering or melting, and the thus sintered layer or melted and solidified layer is laminated, wherein a surface finish step is adopted that inner faces and/or outer faces of both ends and their vicinities configuring the joined part to a human bone part are polished by a rotating tool based on the image data and also irradiation of electromagnetic waves or electron beams at both ends and their vicinities constituting the joined part is set greater than that at other regions.
patents
