WO2015030102A1 - 光造形方法 - Google Patents
光造形方法 Download PDFInfo
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- WO2015030102A1 WO2015030102A1 PCT/JP2014/072546 JP2014072546W WO2015030102A1 WO 2015030102 A1 WO2015030102 A1 WO 2015030102A1 JP 2014072546 W JP2014072546 W JP 2014072546W WO 2015030102 A1 WO2015030102 A1 WO 2015030102A1
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- dimensional
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- zone
- modeling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—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
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—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
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—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
- B29C64/10—Processes of additive manufacturing
- B29C64/171—Processes of additive manufacturing specially adapted for manufacturing multiple 3D objects
- B29C64/182—Processes of additive manufacturing specially adapted for manufacturing multiple 3D objects in parallel batches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0058—Liquid or visquous
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
Definitions
- the present invention relates to a stereolithography method.
- the stereolithography apparatus includes a liquid tank and a lifting table that can be moved up and down in the liquid tank.
- the liquid tank is filled with a liquid photocurable resin as a curable material.
- the liquid tank has an opening in the upper part, and light is irradiated into the liquid tank through the opening.
- the optical modeling device When modeling a three-dimensional object, the optical modeling device first lifts and lowers from the liquid surface of the liquid photocurable resin to a height lowered by the thickness of the lowest layer of the three-dimensional object to be modeled. Position.
- the stereolithography apparatus stabilizes the liquid level by moving the recoater along the liquid level.
- the optical modeling apparatus scans light within a necessary range by a scanner, thereby photocuring the liquid photocurable resin to form the lowermost layer portion of the three-dimensional shape.
- the stereolithography apparatus further lowers the lifting table by the thickness of the next layer below the lowermost layer, that is, the second layer, and forms the second layer in the same manner as the lowermost layer.
- the optical modeling apparatus similarly models the three-dimensional shape by photocuring the liquid photocurable resin and forming the layers one by one from the lowest layer of the three-dimensional shape.
- optical modeling apparatus when modeling a plurality of three-dimensional objects at once in a modeling range in which a light beam can be scanned, the user can obtain data on the three-dimensional objects arranged so as to fit in the modeling area. Creating. For this reason, there is a need for an optical modeling method capable of automatically arranging a plurality of three-dimensional shapes in a modeling range when modeling a plurality of three-dimensional shapes at once. When arranging a plurality of three-dimensional objects in the modeling range, it is required to arrange so that as many three-dimensional objects as possible can be modeled.
- the present invention has been made in view of such circumstances, and its purpose is to provide a light that can automatically and efficiently arrange a plurality of three-dimensional shapes in a modeling range when modeling a plurality of three-dimensional shapes at a time.
- the object is to provide a modeling method.
- An optical modeling method that solves the above-described problems is a modeling range on a lifting table by selectively irradiating a curable material with light and curing the curable material to form a model corresponding to a set of three-dimensional objects.
- a plurality of arrangement areas defined by boundaries extending along the extending direction of the recoater for arranging the set of three-dimensional objects in the modeling range by the control device and adjusting the liquid level Is set in the modeling range, and the three-dimensional shaped object is arranged in the arrangement area in the descending order of the height, and in order from the first arrangement area among the plurality of arrangement areas. Is the gist of this.
- a plurality of placement areas partitioned by boundaries extending along the extending direction of the recoater is set, and the three-dimensional shape is formed in the placement area in order from the first placement area among the plurality of placement areas.
- the placement area can be narrowed down with respect to the modeling range on the lifting table, and a high-quality modeling object can be selected within the placement area. Can be biased. For this reason, a three-dimensional shaped object can be modeled efficiently by reducing the irradiation range of light rays as much as possible.
- the plurality of arrangement areas are three or more arrangement areas, and for an integer n of 2 or more, the (n + 1) th arrangement area is designated as the first to (n ⁇ 1) th. It is preferable to set the arrangement area so that the nth arrangement area and the (n + 1) th arrangement area are sandwiched between them.
- the nth arrangement area and the (n + 1) th arrangement area sandwich the first to (n ⁇ 1) th arrangement area. For this reason, when the three-dimensional object does not fill the entire surface of the modeling range on the lifting table, the light irradiation range is narrowed down to a range centering on the first arrangement area in the modeling range on the lifting table. Can do. Therefore, a three-dimensional shape can be efficiently modeled by reducing the light irradiation range as much as possible.
- the plurality of arrangement areas are three or more arrangement areas, each arrangement area is set adjacent to another arrangement area, and the (n + 1) th arrangement for an integer n of 2 or more. It is preferable that the area is set to a wider area in the moving direction of the recoater among the areas in which no arrangement area is set in the modeling area.
- the (n + 1) th arrangement area is set in the wider range in the moving direction of the recoater among the areas where the arrangement area is not set in the modeling area.
- the portion where the arrangement area is not arranged can be reduced as much as possible.
- positioning area contains the center of the movement range in the moving direction of the said recoater.
- the first arrangement area is set at a position including the center of the moving range of the recoater.
- positioning area is set so that it may adjoin to the 1st end in the moving direction of the said recoater in the said shaping
- an arrangement area is set in order from the 1st end of a modeling range. For this reason, an arrangement area can be set easily rather than arrange
- positioned at each said arrangement area is an integer greater than or equal to 2 in each arrangement area where three or more three-dimensional shape objects are arrange
- the three-dimensional object having the heights from the first to the (n ⁇ 1) th has the three-dimensional object having the nth height and the (n + 1) th height.
- a three-dimensional object is sandwiched.
- a high three-dimensional shape object is arrange
- the shape object is arranged in a wider area in the extending direction of the recoater among areas where the three-dimensional shape object is not arranged in the arrangement area.
- the three-dimensional shape having the (n + 1) th height in the wider area in the extending direction of the recoater among the areas where the three-dimensional object is not arranged in the arrangement area Arrange things. For this reason, the part which has not arrange
- the first highest three-dimensional shaped object is disposed at a central portion of the recoater in the extending direction of the recoater in the arrangement area.
- the first highest three-dimensional shaped object is arranged at the center of the extending range of the recoater. For this reason, since a high three-dimensional shape object is arrange
- the three-dimensional shaped object having the first height is A three-dimensional object that is arranged adjacent to the first end in the moving direction of the recoater and has an nth height for an integer n of 2 or more is a cubic having an (n ⁇ 1) th height. It is preferable to arrange so as to be adjacent to the original shape.
- the three-dimensional object is arranged in order from the first end of the arrangement area. For this reason, it is possible to easily arrange the three-dimensional shape object than to arrange the first highest three-dimensional shape object in the center.
- the said three-dimensional shape object is not arrange
- the three-dimensional objects that can be arranged in the empty area among the non-arranged three-dimensional objects are arranged in the descending order of height with respect to the empty area in the arrangement area where the three-dimensional object is arranged. For this reason, many three-dimensionally shaped objects can be arranged in one arrangement area by effectively using the empty area in the arrangement area.
- the already placed three-dimensional shape object Repositioning the recoater toward the first end in the moving direction, and then arranging the non-arranged three-dimensional shapes in descending order with respect to the empty area where the three-dimensional shapes are not arranged. preferable.
- two directions that are parallel to and orthogonal to the bottom surface of the three-dimensional shape object are set, and the longer one of the lengths in the two directions of the three-dimensional shape object is the extension direction of the recoater. It is preferable to set the length.
- the longer one of the lengths in two directions that are parallel to and orthogonal to the bottom surface of the three-dimensional object is set as the length in the extending direction of the recoater. For this reason, it can suppress that the length in the moving direction of the recoater of the arrangement area is unnecessarily widened by the length of the three-dimensional shaped object.
- the width of the arrangement area in the moving direction of the recoater is preferably changed in accordance with the length of the arranged three-dimensional object in the moving direction of the recoater.
- the width in the moving direction of the recoater in the arrangement area is set in accordance with the length of the arranged three-dimensional object in the moving direction of the recoater. For this reason, since the width
- a plurality of three-dimensional objects when modeling a plurality of three-dimensional objects at once, a plurality of three-dimensional objects can be automatically and efficiently arranged in the modeling range.
- positioning of the three-dimensional shaped object by the optical modeling method of 2nd Embodiment. (A)
- (A) (b) The figure which shows arrangement
- positioning of the three-dimensional shaped object by the optical modeling method of a modification The figure which shows the arrangement
- positioning state of the three-dimensional shaped object by the optical modeling method of a modification The figure which shows the arrangement
- the optical modeling apparatus includes a liquid tank 11 filled with a liquid photocurable resin as a curable material, a laser 12 that emits a light beam, and a light tank emitted from the laser 12. 11 is provided.
- the light beam emitted from the laser 12 enters the scanner 13 via the optical system device.
- the optical modeling apparatus includes an elevating table 15 that can be moved up and down in the liquid tank 11.
- the lifting table 15 is moved up and down by the table driving device 16.
- a recoater 17 for adjusting the liquid surface is installed above the liquid tank 11, a recoater 17 for adjusting the liquid surface is installed.
- the recoater 17 is moved in the front-rear direction (left-right direction in the figure) by the recoater driving device 18.
- the laser 12, the scanner 13, the table driving device 16, and the recoater driving device 18 are controlled by the control device 10.
- the optical modeling apparatus cures the liquid photocurable resin by selectively irradiating light on the upper surface of the lifting table 15 in the liquid tank 11 filled with the liquid photocurable resin.
- a three-dimensional object S is formed.
- the three-dimensional shaped object S that has been shaped is described as a shaped object.
- the lifting table 15 uses a punching plate so that the photocurable resin filled in the liquid tank 11 can easily pass between the lower surface and the upper surface of the lifting table 15.
- a modeling range A is a range in which the three-dimensional shaped object S can be modeled on the lifting table 15.
- the control apparatus 10 sets the arrangement
- FIG. The arrangement zone Z is partitioned by a boundary line B along the extending direction Y (hereinafter, direction Y) of the recoater 17, and a plurality of arrangement zones Z are set side by side in the moving direction X (hereinafter, direction X) of the recoater 17 in the modeling range A. .
- the control device 10 sets the first arrangement zone Z1 at a position including the center of the movement range in the direction X.
- Each placement zone Z is three or more placement zones Z.
- the (n + 1) th placement zone Z (n + 1) is placed from the first to the (n ⁇ 1) th placement.
- the zones Z1 to Z (n ⁇ 1) are set so that the nth arrangement zone Zn and the (n + 1) th arrangement zone Z (n + 1) are sandwiched.
- the control device 10 sets the second arrangement zone Z2 adjacent to the first arrangement zone Z1.
- the second placement zone Z2 is set adjacent to the first placement zone Z1 in the ⁇ X direction (left direction in the figure).
- the n-th arrangement zone Zn is the (n ⁇ 1) -th arrangement zone Z1 to Z (n-2) from the first to the (n ⁇ 2) -th arrangement zone. It is set so that the arrangement zone Z (n ⁇ 1) and the nth arrangement zone Zn are sandwiched.
- the control device 10 sets a second placement zone Z2 adjacent to the first placement zone Z1. In FIG.
- the second placement zone Z2 is set adjacent to the first placement zone Z1 in the ⁇ X direction (left direction in the figure).
- the (n + 1) th arrangement zone Z (n + 1) is the first to (n ⁇ 1) th arrangement zones Z1 to Z.
- (N ⁇ 1) is set so that the nth arrangement zone Zn and the (n + 1) th arrangement zone Z (n + 1) are sandwiched.
- the arrangement zone Z is set so that the first arrangement zone Z1 is sandwiched between the second arrangement zone Z2 and the third arrangement zone Z3, and the first and second arrangement zones Z1, Z2 are set to the third arrangement zone Z3 and the third arrangement zone Z3.
- the fourth arrangement zone Z4 is set so as to be sandwiched between the first arrangement zone Z1 to the (n ⁇ 1) th arrangement in the nth arrangement zone Zn and the (n + 1) th arrangement zone Z (n + 1) after the fourth arrangement zone Z4. It is set so as to sandwich the zone Z (n ⁇ 1).
- the second placement zone Z2 is located on the left side of the first placement zone Z1 as viewed in FIG. 2, and the third placement zone Z3 is located on the right side of the first placement zone Z1 in FIG.
- the fourth arrangement zone Z4 is located on the left side of the first arrangement zone Z1 as viewed in FIG. 2, and the fifth arrangement zone Z5 is located on the right side of the first arrangement zone Z1 in FIG.
- the control device 10 changes the width W of the arrangement zone Z in the direction X according to the length of the three-dimensional shape object S to be modeled in the direction X.
- the control device 10 acquires data of the three-dimensional shape object S to be modeled
- the control device 10 inputs the data to the virtual modeling container C.
- the modeling container C the input three-dimensional shaped object S is rotated and aligned.
- the modeling container C is a program for aligning the three-dimensional shapes S to be modeled. That is, in the modeling container C, the outer dimension is obtained with the three-dimensional shaped object S to be modeled as a virtual rectangular parallelepiped, and the longest side among the outer dimensions of the virtual rectangular parallelepiped of the three-dimensional shaped object S is set as the height H.
- a long side other than the height H of the external dimensions of the virtual rectangular parallelepiped S of the three-dimensional shape object S is set as a depth D, and the length other than the height of the external dimensions of the virtual rectangular parallelepiped S of the three-dimensional shape S This side is defined as a width L.
- the three-dimensionally shaped objects processed in the modeling container C are arranged in the order in which the height H of the outer dimensions of the virtual rectangular parallelepiped is high and the directions of the depth D and the width L are aligned.
- the control device 10 outputs the data of the three-dimensional shaped object S input to the modeling container C from the modeling container C.
- the three-dimensional shaped object S to be shaped is arranged along the direction Y based on the height H in each arrangement zone Z.
- the three-dimensional shaped object S is arranged such that the center of the width L of the three-dimensional shaped object S coincides with the center of the width W in the X direction of each arrangement zone Z. That is, the control device 10 arranges the first highest three-dimensional shape object S1 in the center of the direction Y.
- the control device 10 has a three-dimensional shaped object S (n + 1) having an (n + 1) th height for an integer n of two or more.
- the control device 10 arranges the first highest three-dimensional shape object S1 between the second highest three-dimensional shape object S2 and the third highest three-dimensional shape object S3,
- the third highest three-dimensional object S1, S2 is disposed between the third highest three-dimensional object S3 and the fourth highest three-dimensional object S4, and the fourth and subsequent higher three-dimensional objects S4.
- the three-dimensional shaped object S (n ⁇ 1) is arranged so as to be sandwiched therebetween.
- the fourth highest three-dimensional shape object S4 is located on the front side in the direction Y with respect to the first highest three-dimensional shape object S1
- the fifth highest three-dimensional shape object S5 is the first highest tertiary value. It is located on the far side in the direction Y with respect to the original shape object S1.
- the control device 10 sets the depth D of the three-dimensional shaped object S to the length in the direction Y. For this reason, it can suppress that the width W of the arrangement zone Z expands uselessly.
- the three-dimensional shaped object S is arranged in the arrangement zone Z, the three-dimensional shaped object S is arranged several mm away from the boundary line B of the arrangement zone Z in consideration of interference between the three-dimensional shaped objects S. Is done.
- the control device 10 arranges a set of three-dimensional shaped objects S in the modeling range A, the three-dimensional shaped objects S are arranged in descending order from the first arrangement zone Z1.
- the control device 10 performs the tertiary processing on the unplaced three-dimensional shaped object S in descending order of height in the second placement zone Z2.
- the original shape object S is arranged.
- the control apparatus 10 arrange
- the placement of the three-dimensional shaped object S in the placement zone Z ends when the three-dimensional shaped object S no longer exists in the modeling container C.
- the control device 10 reads information (step S1). That is, the control device 10 reads information such as the dimensions of the lifting table 15, the modeling allowable dimensions of the liquid tank 11, and the moving direction X of the recoater 17 from an input device or a storage device (not shown). Based on these pieces of information, the control device 10 grasps the modeling range A and a space where modeling is possible.
- control device 10 acquires the outer dimensions of the three-dimensional shaped object S to be modeled (step S2). That is, the control device 10 acquires the outer dimensions from the CAD data of the three-dimensional shape object S to be modeled input to the control device 10.
- the control device 10 calculates the outer dimensions of the virtual rectangular parallelepiped of the three-dimensional shaped object S (step S3).
- the control device 10 virtually assumes a rectangular parallelepiped in which the three-dimensional shaped object S is accommodated, and calculates the external dimensions of the virtual rectangular parallelepiped. For this reason, even when the three-dimensional shaped object S has a complicated outer shape, by calculating the virtual rectangular parallelepiped corresponding to the three-dimensional shaped object S, the rectangular parallelepiped is rearranged based on the length of each side of the rectangular parallelepiped. Can be automatically arranged.
- the control device 10 determines whether or not all the three-dimensional shaped objects S can be arranged in the modeling range A (step S4). Specifically, the control device 10 determines whether or not the sum of the areas of the bottom surfaces of the virtual rectangular parallelepiped of the three-dimensional shaped object S to be modeled is smaller than the area of the modeling range A. When the sum of the areas of the bottom surfaces of the virtual rectangular parallelepipeds of the three-dimensional shaped object S to be modeled is larger than the area of the modeling range A, the control device 10 determines that all the three-dimensional shaped objects S cannot be arranged in the modeling range A (step S4: NO), the automatic placement is terminated.
- Step S4 YES
- the process proceeds to Step S5.
- step S5 the control device 10 inputs the entire three-dimensional object S into the modeling container C. That is, the control device 10 takes in the external dimensions of the three-dimensional shape object S to be modeled into the modeling container C.
- the control apparatus 10 takes in the external dimensions of the virtual rectangular parallelepiped into the modeling container C.
- Control device 10 rotates all three-dimensional shaped objects S in modeling container C (step S6). That is, the control device 10 rotates the all three-dimensional shape object so that the longer side other than the height H of the external dimensions of the virtual rectangular parallelepiped S of the all three-dimensional shape object S is along the direction of the depth D.
- the control apparatus 10 arranges all the three-dimensional shaped objects S in the modeling container C in descending order of the height H (step S7). That is, the control apparatus 10 arranges all the three-dimensional shapes S in descending order of the height H of the virtual rectangular parallelepiped of the all three-dimensional shapes S.
- control device 10 constructs an arrangement zone Z in the modeling range A (step S8). That is, the control device 10 sets a boundary line B parallel to the direction Y in the modeling range A, and sets an arrangement zone Z adjacent to each other in the direction X in the modeling range A.
- the width W of the arrangement zone Z is changed according to the width L of the three-dimensional shaped object S arranged in the arrangement zone Z.
- the first arrangement zone Z1 is set at a position including the center in the direction X.
- the second placement zone Z2 and the third placement zone Z3 are set across the first placement zone Z1.
- the fourth arrangement zone Z4 and the fifth arrangement zone Z5 are set across the first to third arrangement zones Z1 to Z3 (see FIG. 2).
- the second arrangement zone Z2 and subsequent zones are set when there are three-dimensional objects to be arranged.
- the control device 10 arranges the three-dimensional shaped object S to be modeled from the modeling container C in the descending order of the height H (step S9). That is, the control device 10 places the depth D of the three-dimensional shaped object S from the modeling container C in the first placement zone Z1 in the descending order of the height H of the three-dimensional shaped object S with the direction Y as the direction Y.
- control device 10 determines whether or not the three-dimensional shaped object S exists in the modeling container C (step S10). That is, the control device 10 confirms whether or not the three-dimensional shape object S to be arranged remains in the modeling container C. And the control apparatus 10 completes arrangement
- step S10 when the three-dimensional shaped object S to be arranged remains in the modeling container C (step S10: YES), this means that the three-dimensional shaped object S has not entered the first arrangement zone Z1. Yes. Therefore, the control apparatus 10 transfers to the process of step S8, when the three-dimensional shaped object S which should be arrange
- control apparatus 10 cannot arrange
- the three-dimensional shaped object S to be modeled is arranged in the arrangement zone Z extending in the direction Y in the descending order of the height H from the center in the direction Y and the direction X of the modeling range A and three-dimensionally modeled.
- the arrangement zone Z extending in the direction Y in the descending order of the height H from the center in the direction Y and the direction X of the modeling range A and three-dimensionally modeled.
- the height H of the three-dimensional shaped object S arranged in the modeling range A is the highest in the center in the direction X and decreases as the distance from the center increases. For this reason, it is only necessary to model only the vicinity of the center in the direction X as the modeling of the three-dimensional shaped object S progresses and the height H of the modeled object increases.
- the light for solidifying the modeled object is guided by the scanner 13 from the laser 12 through the scanner 13. At this time, since the light does not hit vertically when it is away from the scanner 13, the accuracy is slightly lowered. Further, correction may be performed by using a focus adjusting device (not shown), but this causes a decrease in accuracy.
- the scanner 13 is often located at the upper center of the modeling range A. However, when the scanner 13 is away from the center, it is preferable to set the first arrangement zone Z1 under the scanner 13.
- the height H of the three-dimensional shaped object S arranged in the modeling range A is the highest in the center in the direction Y, and becomes lower as the distance from the center increases. For this reason, what is necessary is just to model only the center vicinity in the direction Y, so that the three-dimensional shaped object S is modeled and the height H becomes high.
- the control device 10 models the modeled object based on the arrangement data in which the three-dimensionally shaped object S is arranged in the modeling range A. At this time, as the height H of the modeled object increases, it is only necessary to model the vicinity of the center in the direction X and the direction Y. Therefore, the irradiation range of the light beam during modeling can be narrowed, and the three-dimensional shaped object S can be efficiently used. Can be modeled.
- S is arranged in order of height H. For this reason, since it is only necessary to arrange the first arrangement zone Z1 in order from the height H, when the plurality of three-dimensional objects S are modeled at once, the plurality of three-dimensional objects S are automatically and efficiently set in the modeling area A. Can be placed well.
- the arrangement zone Z can be narrowed with respect to the modeling range A on the lifting table 15.
- a modeled object having a high height H can be biased. For this reason, a three-dimensional shaped object can be modeled efficiently by reducing the irradiation range of light rays as much as possible.
- the first arrangement zone Z1 is set at a position including the center in the direction X. For this reason, when the three-dimensional shaped object S does not fill the entire surface of the modeling range A on the lifting table 15, the light irradiation range may be narrowed to the vicinity of the center in the direction X of the modeling range A on the lifting table 15. it can. Therefore, the three-dimensional shaped object S can be efficiently modeled by reducing the light irradiation range as much as possible.
- the first highest three-dimensional shaped object S1 is arranged in the center in the direction Y, and each three-dimensional shaped object is set on both sides of the first highest three-dimensional shaped object S1. For this reason, since the high three-dimensional shaped object S is arrange
- the width in the direction X of the arrangement zone Z is set in accordance with the depth D in the direction X of the three-dimensional shaped object S. For this reason, since the width in the direction X of the arrangement zone Z is accurately set according to the three-dimensional shaped object S, the arrangement is efficiently performed.
- the three-dimensional shaped object S to be shaped is arranged along the direction Y based on the height H in the first arrangement zone Z1. That is, the control apparatus 10 arrange
- the first highest three-dimensional object S1 to the fifth highest three-dimensional object S5 are arranged.
- the control device 10 sets the depth D of the three-dimensional shaped object S to the length in the direction Y.
- the above arrangement is the first arrangement of the three-dimensional shaped object S.
- the first placement zone Z1 includes an empty area where the three-dimensional shaped object S is not placed. Free areas are indicated by dots. For example, vacant areas exist on both sides in the X direction (left and right sides) of the third highest three-dimensional shaped object S3.
- a shaped object S is arranged. That is, the eighth highest three-dimensional shape object S8 and the ninth highest three-dimensional shape object S9 are disposed in the left empty region in the X direction of the third highest three-dimensional shape object S3.
- the tenth highest three-dimensional object S10 and the eleventh highest three-dimensional object S11 are arranged in the empty area on the right side in the X direction of the third highest three-dimensional object S3.
- the control apparatus 10 will be similarly in order of the 2nd arrangement zone Z2, the 3rd arrangement zone Z3, and the 4th arrangement zone Z4.
- a three-dimensional shaped object S that is not arranged is arranged. Note that the placement of the three-dimensional shaped object S in the placement zone Z ends when the three-dimensional shaped object S no longer exists in the modeling container C.
- control device 10 performs the same processing as in the first embodiment up to step S ⁇ b> 9. That is, the control device 10 places the depth D of the three-dimensional shaped object S from the modeling container C in the first placement zone Z1 in the descending order of the height H of the three-dimensional shaped object S with the direction Y (see FIG. 8).
- the control device 10 arranges the three-dimensional shaped object S in the empty area of the arrangement zone Z in which the three-dimensional shaped object S is arranged in descending order of the height H (step S11). That is, the control device 10 confirms whether or not the three-dimensional shaped object S can be arranged in the empty area of the arrangement zone Z in the descending order of the height H of the three-dimensional shaped object S remaining in the modeling container C. Arrange what can be arranged (see FIG. 9). Here, whether or not the three-dimensional shaped object S can be arranged in the vacant area of the arrangement zone Z is compared with the maximum value of the width in the X direction of the vacant area and the width L of the three-dimensional shaped object S that is not arranged. Confirm by doing. The maximum value of the width in the X direction of the empty area is updated every time the three-dimensional shaped object S is arranged.
- the control device 10 determines whether or not the three-dimensional shaped object S exists in the modeling container C (step S12). That is, the control device 10 confirms whether or not the three-dimensional shape object S to be arranged remains in the modeling container C. And the control apparatus 10 completes arrangement
- step S12 when the three-dimensional shaped object S to be arranged remains in the modeling container C (step S12: YES), the control device 10 indicates that the three-dimensional shaped object S has not entered the first arrangement zone Z1. Therefore, the process proceeds to step S8. That is, the control device 10 sets the second placement zone Z2 following the first placement zone Z1 in order to place the three-dimensional shaped object S that has not entered the first placement zone Z1 (step S8). And the control apparatus 10 repeats step S8, S9, S11, S12 until arrangement
- the three-dimensional shaped object S to be modeled is arranged side by side in the arrangement zone Z extending in the direction Y in the descending order of the height H from the center in the direction Y and the direction X of the modeling range A. Further, when there is an empty area in the arrangement zone Z where the three-dimensional shape object S is arranged, the three-dimensional shape as close to the first arrangement zone Z1 as possible is arranged by arranging the three-dimensional shape object S that can be arranged. An object S can be arranged. As shown in FIG. 11A, when the three-dimensional shaped object S remaining in the modeling container C is arranged in the empty area of the arrangement zone Z, the already arranged three-dimensional shaped object S is arranged in the X direction.
- the three-dimensional shaped object S may be arranged after moving to the left side. That is, there is a small empty area on the right side in the X direction of the second highest three-dimensional shape object S2. Further, a large empty area exists on the right side in the X direction of the third highest three-dimensional shaped object S3.
- the three-dimensional shaped objects S that can be arranged in the empty area of the first arrangement zone Z1 are arranged. That is, the eighth highest three-dimensional shape S8 is arranged in the empty area on the right side in the X direction of the second highest three-dimensional shape S2. Further, in the empty area on the right side in the X direction of the third highest three-dimensional shape object S3, the seventh highest three-dimensional shape object S7, the ninth highest three-dimensional shape object S9, and the tenth time. A high three-dimensional shaped object S10 is arranged. It is confirmed whether or not the vacant area of the arrangement zone Z can be arranged in descending order. For this reason, the sixth highest three-dimensional object S6, the eleventh highest three-dimensional object S11, and the twelfth highest three-dimensional object S12 cannot be arranged in the empty area of the first arrangement zone Z1. Remains without placement.
- the following effects can be obtained.
- the three-dimensional objects S that can be arranged in the empty area in the arrangement zone Z in which the three-dimensional object S is arranged are arranged in the descending order of the height H. For this reason, it is possible to arrange many three-dimensional objects S in one arrangement zone Z by effectively using the empty area in the arrangement zone Z.
- the three-dimensional shaped object S that can be arranged in the empty area in a state where the three-dimensional shaped object S already arranged in the arrangement zone Z is brought to the end is arranged in order of height H. For this reason, the empty area in the direction X can be maximized by bringing the already arranged three-dimensional object S toward the end, and a larger three-dimensional object S can be further arranged.
- the said embodiment can be implemented with the following forms which changed this suitably.
- these three-dimensional objects S when there are a plurality of small three-dimensional objects S, these three-dimensional objects S may be collectively arranged in the arrangement zone Z as one three-dimensional object S.
- the eighth to thirteenth highest three-dimensional objects S8 to S13 are arranged in the arrangement zone Z as one three-dimensional object S8 ′. In this way, handling these three-dimensional objects as one three-dimensional object rather than disposing them separately in the arrangement zone Z facilitates handling.
- 180 degrees may be rotated according to the shape of the three-dimensional shape object S.
- the three-dimensional shaped objects Sa and Sb are arranged in the first arrangement zone Z1.
- the upper portions of these three-dimensional shapes Sa and Sb are biased in different directions in the direction X. That is, the upper part of the three-dimensional shaped object Sa is located on the right side in the direction X, and the upper part of the three-dimensional shaped object Sb is located on the left side in the direction X. Therefore, as shown in FIG.
- the upper portions of the three-dimensional shaped objects Sa and Sb can be positioned on the left side in the direction X, that is, the same Can be biased in the direction. Therefore, since the amount of movement of the recoater 17 in the X direction can be reduced by the progress of modeling, the modeling time can be shortened. Since the 180 degree rotation process on the XY plane can be performed while maintaining the shape of the virtual rectangular parallelepiped, it may be performed in step S6 or immediately before the arrangement is completed.
- the (n + 1) -th placement zone Z and the first to (n-1) -th placement zones Z1 to Z (n-1) are n-th.
- the nth arrangement zone Zn and the (n + 1) th arrangement zone Z (n + 1) are sandwiched.
- the (n + 1) th arrangement zone Z is set to the wider range in the direction X among the ranges in which the arrangement zone Z is not set in the modeling range A Good.
- the fourth arrangement zone Z4 is set, the fourth arrangement zone Z4 is originally set on the left side of the second arrangement zone Z2.
- the fourth arrangement zone Z4 may be set on the right side of the third arrangement zone Z3.
- the fourth arrangement zone Z4 is set on the left side of the second arrangement zone Z2, and the first arrangement zone Z1 is set in the direction of the modeling area A so that the first arrangement zone Z1 to the fourth arrangement zone Z4 fall within the modeling area A.
- the first arrangement zone Z1 to the fourth arrangement zone Z4 may be shifted to the right in the X direction of the modeling range A.
- the fourth arrangement zone Z4 to the sixth arrangement zone Z6 are set in a state where the first arrangement zone Z1 to the third arrangement zone Z3 are set in the modeling range A.
- the width X1 from the left end of the second arrangement zone Z2 to the boundary line of the modeling area A, and the width X2 from the right end of the third arrangement zone Z3 to the boundary line of the modeling area A are set to the right side of the third arrangement zone Z3, which is the wider one.
- the width X1 from the left end of the second arrangement zone Z2 to the boundary line of the modeling area A, and the width X3 from the right end of the fourth arrangement zone Z4 to the boundary line of the modeling area A Are set to the right side of the fourth arrangement zone Z4, which is wider.
- the width X1 from the left end of the second arrangement zone Z2 to the boundary line of the modeling area A, and the width X4 from the right end of the fifth arrangement zone Z5 to the boundary line of the modeling area A Are set on the left side of the second arrangement zone Z2, which is wider.
- a three-dimensional shape Sn having the (n + 1) th height is replaced with a three-dimensional shape having the first to (n ⁇ 1) th height.
- the objects S1 to S (n ⁇ 1) are arranged so that the three-dimensional shape object Sn having the nth height and the three-dimensional shape object S (n + 1) having the (n + 1) th height are sandwiched.
- the three-dimensional shape S (n + 1) having the (n + 1) -th height is set in the direction Y in the area where the three-dimensional shape S is not arranged in the arrangement zone Z. Place in the wider area. . For example, as shown in FIG.
- the fourth highest three-dimensional shaped object S4 is arranged. In doing so, it is arranged on the upper side in the direction Y of the second highest three-dimensional shaped object S2. However, since the second highest three-dimensional shape object S2 does not enter the first arrangement zone Z1, the fourth highest three-dimensional shape object S4 is arranged below the third highest three-dimensional shape object S3. . By arranging in this way, a large number of three-dimensional shaped objects S can be arranged in the arrangement zone Z.
- the first highest three-dimensional shaped object S1 is arranged at the center portion in the direction Y of the arrangement zone Z, and arranged so as to be sandwiched between the three-dimensional shaped objects S in order on both sides.
- the area in the direction Y in the zone Z may not be sufficient.
- the first highest three-dimensional shaped object S1 may be shifted in the direction Y.
- the first highest three-dimensional shaped object S1 is arranged in the first arrangement zone Z1, and the second highest above the direction Y of the first highest three-dimensional shaped object S1.
- the high three-dimensional shape object S2 is arranged, and the fourth highest three-dimensional shape object S4 is arranged above the direction Y of the second highest three-dimensional shape object S2.
- the third highest three-dimensional shape object S3 is arranged below the direction Y of the first highest three-dimensional shape object S1, and the third highest height three-dimensional shape object S3 is arranged below the direction Y of the third highest shape object S3.
- a fifth highest three-dimensional shape object S5 is arranged.
- the width of the arrangement zone Z is changed in accordance with the width L of the three-dimensional shape S, but if the size of the three-dimensional shape S can be grasped to some extent, the width of the arrangement zone Z is set in advance. You may set it.
- rotation and alignment are performed in the modeling container C.
- rotation may be omitted and only alignment may be performed.
- the three-dimensional shaped object S can be efficiently shaped with the height H at least.
- the second placement zone Z2 and the fourth placement zone Z4 are located on the left side of the drawing in FIG. 2 with respect to the first placement zone Z1, and the third placement zone Z3 and the fifth placement zone Z5 Is positioned on the right side of the first arrangement zone Z1 as viewed in FIG.
- the n-th arrangement zone Zn and the (n + 1) -th arrangement zone Z (n + 1) of each arrangement zone Z may be positioned on either the left or right side of the first arrangement zone Z1.
- the second placement zone Z2 is located on the right side of FIG. 19 with respect to the first placement zone Z1
- the third placement zone Z3 is the page of FIG. 19 with respect to the first placement zone Z1.
- the fourth arrangement zone Z4 is located on the left side of the first arrangement zone Z1 as viewed in FIG. 19, and the fifth arrangement zone Z5 is located on the right side of the first arrangement zone Z1 in FIG.
- the second highest three-dimensional shape object S2 and the fourth highest three-dimensional shape object S4 are positioned on the near side in the direction Y with respect to the first highest three-dimensional shape object S1.
- the third highest three-dimensional object S3 and the fifth highest three-dimensional object S5 are located on the far side in the direction Y with respect to the first highest three-dimensional object S1.
- the nth highest 3D shape object Sn and the (n + 1) th highest 3D shape object S (n + 1) are either in front of or behind the first highest 3D shape object S1. It only has to be located on either side. For example, as shown in FIG.
- the second highest three-dimensional shape object S2 is located on the far side in the direction Y with respect to the first highest three-dimensional shape object S1.
- the third highest three-dimensional shape object S3 is located on the near side in the direction Y with respect to the first highest three-dimensional shape object S1.
- the fourth highest three-dimensional shape object S4 is located on the near side in the direction Y with respect to the first highest three-dimensional shape object S1.
- the fifth highest three-dimensional shape object S5 is located on the far side in the direction Y with respect to the first highest three-dimensional shape object S1.
- the first arrangement zone Z1 is set so as to be sandwiched between the second arrangement zone Z2 and the third arrangement zone Z3, and the nth arrangement zone Zn, which is a multiple of 2 after the fourth arrangement zone Z4,
- the first arrangement zone Z1 to the (n-1) th arrangement zone Z (n-1) are sandwiched between the (n + 1) th arrangement zone Z (n + 1).
- the scanner 13 is often located at the upper center of the modeling range A.
- the first arrangement zone Z may be set under the scanner 13. That is, the first arrangement zone Z1 may be set at the end of the modeling range A, and may be set in order from the first arrangement zone Z1. For example, as shown in FIG.
- the first placement zone Z1 is set at the left end of the modeling range A in FIG. For this reason, the first arrangement zone Z1 is set in the center and can be arranged more easily than setting the arrangement zone Z so as to sandwich both sides thereof.
- the modeling range A is set to be small, it is effective because the amount of change in which the irradiation shape of the light beam applied to the photocurable material changes to an ellipse is small.
- the highest three-dimensional shaped object S is arranged at the center in the direction X of the modeling range A. However, it may be shifted from the center in the direction X of the modeling range A.
- the highest three-dimensional shape S is arranged in the center in the direction Y of the modeling range A.
- the arrangement zones Z may be arranged in the descending order of the height H from either one end.
- the three-dimensional shaped objects S are arranged side by side in the descending order of height H from the back end in the direction X of the arrangement zone Z1.
- the three-dimensional shaped object S may be arranged in the descending order of the height H from the front end in the direction X of the arrangement zone Z1.
- the first three-dimensional shape S1 is arranged in the center of the arrangement zone Z, and the three-dimensional shape S is arranged so as to sandwich both sides of the first highest three-dimensional shape S1. Easy to place.
- the modeling range A is set to be small, it is effective because the amount of change in which the irradiation shape of the light beam applied to the photocurable material changes to an ellipse is small.
- the first placement zone Z1 is set at the left end of the modeling range A in FIG. 22 as viewed in the drawing, and the second placement zone Z2 and subsequent zones are set in order, and the direction X of the placement zone Z1
- the three-dimensional shaped objects S may be arranged side by side in the descending order of the height H from the back end. Thereby, the operation
- step S3 the external dimensions are obtained using the three-dimensional shaped object S to be modeled as a virtual rectangular parallelepiped.
- rotation and alignment may be performed according to the external dimensions of the three-dimensional shaped object S without using the virtual rectangular parallelepiped.
- the processing order of the rotation of the three-dimensional shaped object S in step S6 and the alignment of the three-dimensional shaped object in step S7 may be reversed or may be performed simultaneously.
- the modeling container C that performs the rotation and alignment of the three-dimensional shaped object S is set. However, the modeling container C is excluded, and the rotation and alignment of the three-dimensional shaped object S is performed in the arrangement process. You may go.
- next arrangement zone Z is constructed when the three-dimensional shaped object S does not fully enter the arrangement zone Z (step S8), but the arrangement zone Z is constructed in advance and arranged.
- the width W of the arrangement zone Z may be changed in accordance with the width L of the three-dimensional shape S.
- the three-dimensional shaped object S is arranged several mm away from the boundary line B of the arrangement zone Z in consideration of interference between the three-dimensional shaped objects S. That is, the three-dimensional shaped object S was not arranged in a range within a few millimeters from the boundary line B of the arrangement zone Z. However, a space of several millimeters may be added around the three-dimensional shaped object S in advance.
- the automatic arrangement of the three-dimensional shaped object S to be modeled is performed by the control device 10 of the optical modeling apparatus, but the three-dimensional shaped object S to be modeled is automatically arranged outside the optical modeling apparatus.
- the result may be input to the control apparatus 10 of the optical modeling apparatus.
- the outer dimensions are obtained using the three-dimensional shape as a virtual rectangular parallelepiped, the height, depth, and width can be easily obtained when the three-dimensional shape has a complicated shape.
- SYMBOLS 10 Control apparatus, 11 ... Liquid tank, 12 ... Laser, 13 ... Scanner, 15 ... Lifting table, 16 ... Table drive device, 17 ... Recoater, 18 ... Recoater drive device, A ... Modeling range, B ... Boundary line, C ... modeling container, D ... depth, H ... height, L ... width, S, S1, S2, S3, S4, S5 ... three-dimensional shaped object, W ... width, X ... moving direction, Y ... extending direction, Z , Z1, Z2, Z3, Z4, Z5, Z6, Z7 ... arrangement zone.
Abstract
Description
上記課題を解決する光造形方法は、硬化性材料に選択的に光線を照射して前記硬化性材料を硬化させることによって1組の三次元形状物に対応する造形物を昇降テーブル上の造形範囲に造形する光造形方法において、前記造形範囲に前記1組の三次元形状物を制御装置によって配置し、液面を整えるためのリコータの延出方向に沿う境界線によって区画される複数の配置区域を前記造形範囲に前記制御装置が設定し、前記三次元形状物を高さの高い順に、かつ、前記複数の配置区域のうち第1番目の配置区域から順に、前記配置区域内に前記制御装置が配置することをその要旨としている。
上記方法によれば、リコータの移動範囲の中央を含む位置に第1番目の配置区域を設定する。このため、昇降テーブル上の造形範囲の全面を三次元形状物が埋めない場合には、昇降テーブル上の造形範囲のうちリコータの移動範囲の中央近傍に光線の照射範囲を絞ることができる。よって、光線の照射範囲を極力減らして、三次元形状物を効率良く造形することができる。
上記光造形方法について、各前記配置区域に配置された前記三次元形状物は、前記複数の配置区域のうち、3個以上の三次元形状物が配置される各配置区域では、2以上の整数nについて、第(n+1)番目の高さを有する三次元形状物を、第1から第(n-1)番目までの高さを有する三次元形状物を第n番目の高さを有する三次元形状物と第(n+1)番目の高さを有する三次元形状物とが挟むように配置することが好ましい。
以下、図1~図7を参照して、光造形方法の第1の実施形態について説明する。
図1に示されるように、光造形装置は、硬化性材料として液状の光硬化性樹脂で満たされた液槽11と、光線を出射するレーザ12と、レーザ12から出射された光線を液槽11に照射するスキャナ13とを備えている。レーザ12から出射された光線は、光学系装置を介してスキャナ13に入射する。光造形装置は、液槽11内において上下方向に昇降可能な昇降テーブル15を備えている。昇降テーブル15は、テーブル駆動装置16によって上下に移動される。液槽11の上方には、液面を整えるためのリコータ17が設置されている。リコータ17は、リコータ駆動装置18によって前後方向(図中左右方向)に移動される。レーザ12、スキャナ13、テーブル駆動装置16、及びリコータ駆動装置18は、制御装置10によって制御される。
まず、図2に示されるように、昇降テーブル15上において三次元形状物Sを造形可能な範囲を造形範囲Aとする。そして、制御装置10は、造形範囲Aに対して造形する三次元形状物Sを配置する配置区域である配置ゾーンZを設定する。配置ゾーンZは、リコータ17の延出方向Y(以下、方向Y)に沿う境界線Bによって区画され、造形範囲Aにおけるリコータ17の移動方向X(以下、方向X)に並んで複数設定される。制御装置10は、方向Xにおける移動範囲の中央を含む位置に第1配置ゾーンZ1を設定する。各配置ゾーンZは、3個以上の配置ゾーンZであり、2以上の整数nについて、第(n+1)番目の配置ゾーンZ(n+1)を、第1から第(n-1)番目までの配置ゾーンZ1~Z(n-1)を第n番目の配置ゾーンZnと第(n+1)番目の配置ゾーンZ(n+1)とが挟むように設定する。
まず、制御装置10は、情報を読み込む(ステップS1)。すなわち、制御装置10は、昇降テーブル15の寸法、液槽11の造形許容寸法、リコータ17の移動方向X等の情報を図示しない入力装置や記憶装置から読み込む。制御装置10は、これらの情報に基づいて造形範囲Aと造形可能な空間とを把握する。
(1)方向Yに沿う境界線Bによって区画される複数の配置ゾーンZを設定し、複数の配置ゾーンZのうち第1配置ゾーンZ1から順に、配置ゾーンZ内に同時に造形する三次元形状物Sを高さHの高い順に配置する。このため、第1配置ゾーンZ1から順に高さHによって配置すればよいので、複数の三次元形状物Sを一度に造形する際に、複数の三次元形状物Sを造形範囲Aに自動で効率良く配置できる。また、昇降テーブル15上の造形範囲Aの全面を三次元形状物Sが埋めない場合には、昇降テーブル15上の造形範囲Aに対して配置ゾーンZを絞ることができ、配置ゾーンZ内において高さHの高い造形物を偏らせることができる。このため、光線の照射範囲を極力減らして、三次元形状物を効率良く造形できる。
(第2の実施形態)
以下、図8~図11を参照して、光造形方法の第2の実施形態について説明する。この実施形態の光造形方法は、1個の配置ゾーンZに三次元形状物Sを配置した後に、配置ゾーンZ内の空き領域に対して未配置の三次元形状物Sのうち配置できるものを配置する点が上記第1の実施形態と異なっている。以下、第1の実施形態との相違点を中心に説明する。
図10に示されるように、制御装置10は、ステップS9まで第1の実施形態と同様に処理する。すなわち、制御装置10は、造形コンテナCから三次元形状物Sの奥行きDを方向Yとして、三次元形状物Sの高さHの高い順に第1配置ゾーンZ1に配置する(図8参照)。
(8)三次元形状物Sが配置された配置ゾーンZ内の空き領域に対して配置できる三次元形状物Sを高さHの高い順に配置する。このため、配置ゾーンZ内の空き領域を有効に利用して1つの配置ゾーンZに多くの三次元形状物Sを配置することができる。
・上記各実施形態において、小さい三次元形状物Sが複数存在する場合には、これらの三次元形状物Sをまとめて一つの三次元形状物Sとして配置ゾーンZに配置してもよい。例えば、図12に示されるように、第8~13番目に高い三次元形状物S8~S13を1つの三次元形状物S8’として配置ゾーンZに配置する。このように、それらの三次元形状物を配置ゾーンZ内にばらばらに配置するよりも1つの三次元形状物として処理することで、取り扱いが容易になる。
・上記実施形態では、三次元形状物Sの回転と整列とを行う造形コンテナCを設定したが、造形コンテナCを排除して、配置処理の中で、三次元形状物Sの回転と整列を行ってもよい。
(イ)請求項1~6に記載の光造形方法において、前記三次元形状物を仮想直方体として外形寸法を求めることを特徴とする光造形方法。
Claims (13)
- 硬化性材料に選択的に光線を照射して前記硬化性材料を硬化させることによって1組の三次元形状物に対応する造形物を昇降テーブル上の造形範囲に造形する光造形方法において、
前記造形範囲に前記1組の三次元形状物を制御装置によって配置し、
液面を整えるためのリコータの延出方向に沿う境界線によって区画される複数の配置区域を前記造形範囲に前記制御装置が設定し、
前記三次元形状物を高さの高い順に、かつ、前記複数の配置区域のうち第1番目の配置区域から順に、前記配置区域内に前記制御装置が配置する
ことを特徴とする光造形方法。 - 請求項1に記載の光造形方法において、
前記複数の配置区域は3個以上の配置区域であり、
2以上の整数nについて、第(n+1)番目の配置区域を、第1から第(n-1)番目までの配置区域を第n番目の配置区域と第(n+1)番目の配置区域とが挟むように設定する、
ことを特徴とする光造形方法。 - 請求項1に記載の光造形方法において、
前記複数の配置区域は3個以上の配置区域であり、各配置区域は別の配置区域に隣接して設定され、
2以上の整数nについて、第(n+1)番目の配置区域を、前記造形範囲において配置区域が設定されていない範囲のうち、前記リコータの移動方向における幅の広い方の範囲に設定する、
ことを特徴とする光造形方法。 - 請求項1~3のいずれか一項に記載の光造形方法において、
前記第1番目の配置区域は、前記リコータの移動方向における移動範囲の中央を含む、
ことを特徴とする光造形方法。 - 請求項1に記載の光造形方法において、
前記第1番目の配置区域は、前記造形範囲において前記リコータの移動方向における第1端に隣接するように設定され、2以上の整数nについて、第n番目の配置区域は、第(n-1)番目の配置区域に隣接するように設定される、
ことを特徴とする光造形方法。 - 請求項1~5のいずれか一項に記載の光造形方法において、
前記複数の配置区域のうち、3個以上の三次元形状物が配置される各配置区域では、
2以上の整数nについて、第(n+1)番目の高さを有する三次元形状物を、第1から第(n-1)番目までの高さを有する三次元形状物を第n番目の高さを有する三次元形状物と第(n+1)番目の高さを有する三次元形状物とが挟むように配置する、
ことを特徴とする光造形方法。 - 請求項1~5のいずれか一項に記載の光造形方法において、
前記複数の配置区域のうち、3個以上の三次元形状物が配置される各配置区域では、
2以上の整数nについて、第(n+1)番目の高さを有する三次元形状物を、該配置区域において三次元形状物が配置されていない区域のうち、前記リコータの延出方向における幅の広い方の区域に配置する、
ことを特徴とする光造形方法。 - 請求項6又は7に記載の光造形方法において、
第1番目に高い前記三次元形状物は、前記配置区域における前記リコータの延出方向における前記リコータの幅の中央部分に配置される
ことを特徴とする光造形方法。 - 請求項1~5のいずれか一項に記載の光造形方法において、
前記複数の配置区域のうち、2個以上の三次元形状物が配置される各配置区域では、
第1番目の高さを有する三次元形状物は、該配置区域において前記リコータの移動方向における第1端に隣接するように配置され、2以上の整数nについて、第n番目の高さを有する三次元形状物は、第(n-1)番目の高さを有する三次元形状物に隣接するように配置される、
ことを特徴とする光造形方法。 - 請求項1~9のいずれか一項に記載の光造形方法において、
各配置区域について、1回目の前記三次元形状物の配置の完了後、次の配置区域における前記三次元形状物の配置前に、前記三次元形状物が配置されていない空き領域に対し、未配置の前記三次元形状物のうち前記空き領域に配置できる前記三次元形状物を高さの高い順に配置する
ことを特徴とする光造形方法。 - 請求項10に記載の光造形方法において、
各配置区域について、1回目の前記三次元形状物の配置の完了後、次の配置区域における前記三次元形状物の配置前に、既に配置された前記三次元形状物を前記リコータの移動方向における第1端に寄せて再配置し、次いで前記三次元形状物が配置されていない空き領域に対し、未配置の前記三次元形状物を高さの高い順に配置する
ことを特徴とする光造形方法。 - 請求項1~11のいずれか一項に記載の光造形方法において、
前記三次元形状物の底面と平行であって直交する2方向を設定し、
前記三次元形状物の前記2方向における長さのうち長い方を前記リコータの延出方向の長さに設定する
ことを特徴とする光造形方法。 - 請求項1~11のいずれか一項に記載の光造形方法において、
前記配置区域の前記リコータの移動方向の幅は、配置される前記三次元形状物の前記リコータの移動方向における長さに合わせて変更される
ことを特徴とする光造形方法。
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CN106994780A (zh) * | 2016-01-23 | 2017-08-01 | 周宏志 | 一种基于增材制造的刮板定位方法 |
CN106994785A (zh) * | 2016-01-23 | 2017-08-01 | 周宏志 | 一种用于光固化快速成型的刮板智能定位方法 |
CN107020743A (zh) * | 2016-01-30 | 2017-08-08 | 周宏志 | 基于增材制造的多零件快速打印方法 |
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JP2018114678A (ja) | 2017-01-18 | 2018-07-26 | 富士ゼロックス株式会社 | 情報処理装置、三次元造形システム、及びプログラム |
EP3566869B1 (en) | 2018-05-08 | 2021-09-22 | 9328-8082 Québec Inc. | Modular additive manufacturing system and related methods for continuous part production |
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