JP2017209822A - Three-dimensional data generation apparatus, three-dimensional molding apparatus, production method of molded product and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional generation apparatus, a three-dimensional molding apparatus, a production method of a molded product and a program, which can reduce a material cost necessary for molding when compared with a technology in which data for changing cross-sectional shape data are not changed.SOLUTION: A data generation apparatus 100 includes: a material cost calculating part 116 for calculating the material cost of a molding material for molding a molded product 900 defined by three-dimensional data; a cross-sectional shape data generation part 112 for generating cross-sectional shape data divided into a plurality of continuous layers in a predetermined direction from the three-dimensional data; a low reduction indication part 122 for indicating a low reduction amount of the molding material used for molding so as to reduce the material cost calculated by a material cost calculating part 116; and a data change part 124 for changing the cross-sectional shape data generated by the cross-sectional shape data generation part 112 based on the indication of the low reduction indication part 122.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a three-dimensional data generation device, a three-dimensional modeling device, a manufacturing method of a modeled object, and a program.

  Patent Document 1 discloses a setting data creation device for a three-dimensional modeling apparatus that models a three-dimensional modeled object using a modeling material, the input unit for acquiring the three-dimensional data of the modeled object, Parameter setting means for setting which one of the plurality of modeling parameters including the modeling time required for three-dimensional modeling corresponding to a plurality of objects and the usage amount of the modeling material required for modeling the modeled object, Calculation means for calculating the object posture to be optimal based on the priority of the modeling parameters set by the parameter setting means (63), and the calculation means (64) includes a plurality of calculation means (64). A setting data creation apparatus for a three-dimensional modeling apparatus is described in which an optimum posture can be individually calculated for each of the objects.

JP 2012-96427 A

  When modeling a three-dimensional model, it is sufficient that at least a part of the surface shape is a desired shape. For example, a hollow part is formed inside the model, or a part of the surface shape of the model, for example. May be changed. Moreover, if the hollow part is formed inside the modeled object, the amount of modeling material required for modeling may be reduced, and if a part of the surface shape of the modeled object is changed, the amount of modeling material required for modeling may be reduced. And if the quantity of the modeling material required for modeling reduces, the material cost required for modeling will reduce.

  The present invention provides a three-dimensional data generation device, a three-dimensional modeling device, a method for manufacturing a model, and a program capable of reducing the material cost required for modeling compared to a technique that does not change data that changes cross-sectional shape data. The purpose is to do.

  The present invention according to claim 1 is a material cost calculation unit that calculates a material cost of a modeling material for modeling a model defined by three-dimensional data, and a plurality of layers that are continuous in a predetermined direction from the three-dimensional data. A cross-sectional shape data generation unit that generates divided cross-sectional shape data, a reduction amount instruction unit that instructs a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated by the material cost calculation unit, and the reduction And a data changing unit that changes the cross-sectional shape data generated by the cross-sectional shape data generating unit based on an instruction from the quantity instructing unit.

  The present invention of claim 2 is the three-dimensional data generation apparatus according to claim 1, wherein the data changing unit changes the cross-sectional shape data so as to form a hollow portion inside the modeled article.

  According to a third aspect of the present invention, the data changing unit generates reduced data that defines a shape obtained by reducing the outer peripheral shape of the cross-sectional shape data, and the inside of the shape specified by the reduced data is a hollow part. The three-dimensional data generation apparatus according to claim 2, wherein the cross-sectional shape data is changed.

  The present invention according to claim 4 is the three-dimensional data generation device according to claim 2, wherein the data changing unit changes the cross-sectional data so that the inside of the predetermined shape is a hollow part.

  The present invention according to claim 5 is the three-dimensional data generation device according to any one of claims 2 to 4, wherein the data changing unit corrects the cross-sectional shape data so that the hollow portion of the modeled object is filled with another modeling material. is there.

  The present invention according to claim 6 is the three-dimensional data generation device according to claim 1, wherein the data changing unit changes the cross-sectional shape data based on a pressure applied to the modeled object after modeling when using the modeled object after modeling. It is.

  According to a seventh aspect of the present invention, in the first aspect, the material cost calculation unit calculates the material cost using a price per unit amount of the modeling material and a resolution of the output unit that outputs the modeled object. Is a three-dimensional data generation device.

  The present invention according to claim 8 further includes an operation accepting unit that accepts an operation for instructing an amount of the modeling material to be reduced by the operator, and the material cost reduction instructing unit includes the operator accepting operation by the operation accepting unit. The three-dimensional data generation device according to any one of claims 1 to 7, wherein a reduction in material cost is instructed based on an operation.

  The present invention according to claim 9 includes a material cost calculation unit that calculates a material cost of a modeling material for modeling a modeled object specified by the three-dimensional data, and a plurality of layers that are continuous in a predetermined direction from the three-dimensional data. A cross-sectional shape data generation unit that generates divided cross-sectional shape data, a reduction amount instruction unit that instructs a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated by the material cost calculation unit, and the reduction A data changing unit that changes the cross-sectional shape data generated by the cross-sectional shape data generating unit based on an instruction from the quantity instruction unit, an output unit that outputs a modeled object using the cross-sectional shape data changed by the data changing unit, Is a three-dimensional modeling apparatus.

  According to the tenth aspect of the present invention, a material cost calculating step of calculating a material cost of a modeling material for modeling a modeled object specified by the three-dimensional data, and a plurality of layers continuous in a predetermined direction from the three-dimensional data. A cross-sectional shape data generation step for generating divided cross-sectional shape data, a reduction amount instruction step for instructing a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated in the material cost calculation step, and the reduction And a data changing step of changing the cross-sectional shape data generated in the cross-sectional shape data generating step based on an instruction in the quantity indicating step.

  According to the eleventh aspect of the present invention, a material cost calculating step of calculating a material cost of a modeling material for modeling a modeled object defined by three-dimensional data, and a plurality of layers continuous in a predetermined direction from the three-dimensional data. A cross-sectional shape data generation step for generating divided cross-sectional shape data, a reduction amount instruction step for instructing a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated in the material cost calculation step, and the reduction A data changing step for changing the cross-sectional shape data generated in the cross-sectional shape data generating step based on an instruction in the quantity indicating step, and an output step for outputting a model using the cross-sectional shape data changed in the data changing step; Is a modeling method of a modeled object.

  The present invention according to claim 12 is a material cost calculating step for calculating a material cost of a modeling material for modeling a modeled object defined by three-dimensional data, and a plurality of layers continuous in a predetermined direction from the three-dimensional data. A cross-sectional shape data generation step for generating divided cross-sectional shape data, a reduction amount instruction step for instructing a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated in the material cost calculation step, and the reduction A program for causing a computer to execute a data changing step for changing the cross-sectional shape data generated in the cross-sectional shape data generating step based on an instruction in the quantity specifying step.

  According to the thirteenth aspect of the present invention, a material cost calculating step of calculating a material cost of a modeling material for modeling a modeled object defined by three-dimensional data, and a plurality of layers continuous in a predetermined direction from the three-dimensional data. A cross-sectional shape data generation step for generating divided cross-sectional shape data, a reduction amount instruction step for instructing a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated in the material cost calculation step, and the reduction A data changing step for changing the cross-sectional shape data generated in the cross-sectional shape data generating step based on an instruction in the quantity specifying step, and an output step for outputting a model using the cross-sectional shape data changed in the data changing step; Is a program that causes a computer to execute.

  According to the first aspect of the present invention, it is possible to provide a three-dimensional data generation device that can reduce material costs required for modeling as compared with a technique that does not change cross-sectional shape data.

  According to the second aspect of the present invention, the material cost required for modeling can be reduced as compared with a technique in which a hollow portion is not formed inside a modeled article.

  According to this invention which concerns on Claim 3, a hollow part can be formed in a molded article, suppressing the dispersion | variation in the thickness of a molded article.

  According to the fourth aspect of the present invention, the algorithm for changing the cross-sectional shape data can be simplified by comparing the shape in which the inside becomes a hollow portion for each output with the technique defined for each output.

  According to the fifth aspect of the present invention, the hollow portion of one modeling material is formed of another material that is cheaper than the one modeling material, so that it is necessary for modeling while maintaining the strength of the modeled object. Material costs can be reduced.

  According to the sixth aspect of the present invention, the thickness of the modeled object can be determined according to the pressure applied to the modeled object, and the material cost required for modeling is reduced while ensuring the strength at each position of the modeled object. can do.

  According to the present invention of claim 7, the material cost required for modeling can be calculated with a simple algorithm.

  According to the present invention of claim 8, it is possible to indicate the extent to which the material is reduced while estimating the material cost to be reduced.

  According to the ninth aspect of the present invention, it is possible to provide a modeling apparatus capable of reducing the material cost required for modeling as compared with a technique that does not change the cross-sectional shape data.

  According to this invention which concerns on Claim 10, compared with the technique which does not change cross-sectional shape data, the manufacturing method of the molded article which can reduce the material cost required for modeling can be provided.

  According to this invention which concerns on Claim 11, compared with the technique which does not change cross-sectional shape data, the modeling method of the molded article which can reduce the material cost required for modeling can be provided.

  According to the present invention of claim 12, it is possible to provide a program that can reduce the material cost required for modeling as compared with a technique that does not change the cross-sectional shape data.

  According to the thirteenth aspect of the present invention, it is possible to provide a program that can reduce the material cost required for modeling as compared with a technique that does not change the cross-sectional shape data.

It is a figure which shows the three-dimensional modeling system which concerns on the 1st Embodiment of this invention. It is a figure which shows the three-dimensional modeling apparatus which the three-dimensional modeling system shown in FIG. 1 has. It is a block diagram which shows the control part which the three-dimensional modeling apparatus shown in FIG. 2 has. It is a block diagram which shows the functional structure of the data generation apparatus which the three-dimensional modeling system shown in FIG. 1 has. It is a figure which shows the display screen for operation displayed on the display apparatus which the data generation apparatus shown in FIG. 4 has. FIG. 6 (A) is a schematic diagram showing a modeled object having no hollow part, FIG. 6 (B) is a schematic diagram showing a modeled object in which a hollow part is formed, and FIG. It is a schematic diagram which shows the molded article in which the hollow part larger than the hollow part formed in the molded article shown to FIG. 6 (B) was formed. 6 is a flowchart showing processing until the data generation apparatus shown in FIG. 4 issues an output instruction. It is a flowchart which shows the process which changes cross-sectional shape data. It is a figure explaining the 1st algorithm which changes cross-sectional shape data. It is a figure explaining the 2nd algorithm which changes cross-sectional shape data. It is a block diagram which shows the functional structure of the data generation apparatus which the three-dimensional modeling system which concerns on the 2nd Embodiment of this invention has. It is a figure explaining the process of manufacturing a molded article using a modeled object as a model for compression formation. FIG. 13A is a modeled object used as a mold for compression forming, and shows a modeled object modeled without changing the cross-sectional shape data, and FIG. 13B is for compression forming. It is a modeling thing used as a type | mold, Comprising: It is a figure which shows the modeling thing modeled by changing cross-sectional shape data. It is a flowchart which shows the 1st process until the data generation apparatus which concerns on the 2nd Embodiment of this invention gives an output instruction | indication. It is a figure which shows the three-dimensional modeling apparatus which the modeling system which concerns on the 3rd Embodiment of this invention has. It is a block diagram which shows the functional structure of the data processor which the modeling system which concerns on the 4th Embodiment of this invention has. It is a block diagram which shows the functional structure of the data processor which the modeling system which concerns on the 5th Embodiment of this invention has.

  Next, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a three-dimensional modeling system 10 according to the first embodiment of the present invention. The three-dimensional modeling system 10 includes the data generation device 100 and, for example, three three-dimensional modeling devices 500A, 500B, and 500C. The data generation device 100 and the three-dimensional modeling devices 500A, 500B, and 500C are connected to the network 700. It is connected.

  In the three-dimensional modeling system 10, data for modeling is generated by the data generation device 100, and the generated data is transmitted to any of the three-dimensional modeling devices 500 </ b> A, 500 </ b> B, 500 </ b> C via the network 700 and transmitted. Any one of the three-dimensional modeling apparatuses 500A, 500B, and 500C models a model 900 (for example, see FIG. 2) based on the obtained data.

  As the data generation device 100, for example, a personal computer can be used. The data generation device 100 includes a display device 150. As the display device 150, for example, a liquid crystal display device, a CRT display device, or the like can be used. The display device 150 displays an operation display screen 160 (see FIG. 5) described later.

  The data generation device 100 further includes an operation device 190 for operating the data generation device 100. For example, a keyboard or a mouse can be used as the operation device 190. In addition, for example, a touch panel may be used as the display device 150 and the operation device 190. Details of the data generation device 100 will be described later.

  In this embodiment, the three-dimensional modeling system 10 includes three three-dimensional modeling apparatuses 500 including three-dimensional modeling apparatuses 500A, 500B, and 500C, but the three-dimensional modeling system 10 includes at least one three-dimensional modeling apparatus. 500 may be included. Further, in the following description, the three-dimensional modeling apparatuses 500A, 500B, and 500C have an example in which the basic configuration is the same, but the resolution of the model 900 to be output is different from each other. In the following description, the three three-dimensional modeling apparatuses 500A, 500B, and 500C will be collectively referred to as the three-dimensional modeling apparatus 500, unless particularly distinguished.

  In FIG. 2, a three-dimensional modeling apparatus 500 is shown. The three-dimensional modeling apparatus 500 employs a so-called inkjet method, more specifically, a so-called inkjet ultraviolet curable additive modeling method. In the following description, the case where the inkjet ultraviolet curable layered modeling method is adopted as the three-dimensional modeling apparatus 500 is shown as an example, but the three-dimensional modeling apparatus 500 may adopt another method. That is, the three-dimensional modeling apparatus 500 includes, for example, a heat melting laminating method also called FDM (Fused Deposition Modeling), a powder sintering method also called SLS (Selective Laser Sintering), a powder fixing method, a gypsum laminating method, and an STL. It may be a three-dimensional modeling apparatus that employs a method such as an optical modeling method called (Stereo Lithography) or a sheet material lamination method called LOM (Laminated Object Manufacturing).

  As shown in FIG. 2, the three-dimensional modeling apparatus 500 has a modeling stage 510. In the three-dimensional modeling apparatus 500, the modeling object 900 is modeled so that the modeling material is laminated on the upper surface of the modeling stage 510. Further, a support material stacking portion 960 is formed on the upper surface of the modeling stage 510 by stacking a support material as necessary.

  The support material stacking unit 960 is formed to support the modeled object 900 from below when there is a portion where the modeling material is not stacked on the lower side of the modeled object 900. The support material stacking part 960 is removed from the modeled object 900 by, for example, washing with water after the modeled object 900 is modeled.

  A Z-axis direction moving mechanism 520 is connected to the modeling stage 510. The modeling stage 510 can move in the Z-axis direction (vertical direction) by driving the Z-axis direction moving mechanism 520.

  The three-dimensional modeling apparatus 500 further includes a head unit 530, and the head unit 530 includes a head unit main body 532. An X-axis direction moving mechanism 534 is connected to the head unit main body 532. The head unit 530 can move in the X-axis direction (left-right direction in FIG. 2) by driving the X-axis direction moving mechanism 520. Further, a Y-axis direction moving mechanism 536 is connected to the head portion main body 532. The head unit 530 can move in the Y-axis direction (direction intersecting with the paper surface in FIG. 2) by driving the Y-axis direction moving mechanism 536.

  The head unit 530 further includes a modeling material injection nozzle 540. The modeling material injection nozzle 540 injects the modeling material stored in the modeling material storage unit 542 toward the modeling stage 510. As the modeling material, a photocurable resin (ultraviolet curable resin) can be used.

  The head unit 530 further includes a support material injection nozzle 550. The support material injection nozzle 550 injects the support material stored in the support material storage unit 552 toward the modeling stage.

  The head unit 530 has a smoothing device 560. The smoothing device 560 smoothes the modeling material and the support material injected to the modeling stage 510. The smoothing device 560 includes, for example, a rotating member 562 that rotates so as to scrape excess modeling material and excess support material.

  The head unit 530 includes a light irradiation device 570. The light irradiation device 570 cures the modeling material injected to the modeling stage 510 by irradiating light (ultraviolet light), and further cures the support material irradiated to the modeling stage 510.

  FIG. 3 is a block diagram illustrating the control unit 580 included in the three-dimensional modeling apparatus 500. As shown in FIG. 3, the control unit 580 includes a control circuit 582, and the data generation apparatus 100 (see FIG. 1) is connected to the control circuit 582 via a network 700 (see FIG. 1) and a communication interface 584. The generated data is input.

  Further, in the three-dimensional modeling apparatus 500, an X-axis direction moving mechanism 534, a Y-axis direction moving mechanism 536, a Z-axis direction moving mechanism 520, a modeling material injection nozzle 540, and a support material are output from the control circuit 582. The injection nozzle 550, the smoothing device 560, and the light irradiation device 570 are controlled.

  In the three-dimensional modeling apparatus 500 configured as described above, the control circuit 582 causes the X-axis direction moving mechanism 534 to move the head unit 530 to the right side in FIG. The modeling material is injected, and the support material is injected to the modeling stage 510 by the support material injection nozzle 550. Then, the control circuit 582 causes the smoothing device 560 to smooth the modeling material and the support material while causing the X-axis direction moving mechanism 534 to move the head portion 530 to the left side in FIG. Is irradiated with light to cure the modeling material and the support material.

  Then, when the shaping with a certain width in the main scanning direction (X-axis direction) is finished, the control circuit 582 causes the Y-axis direction moving mechanism 536 to move the head unit 530 in the sub-operation direction (Y-axis direction), and Repeats shaping in the constant width direction in the main scanning direction.

  When the modeling of one layered object is completed by repeating the above operation, the control circuit 582 causes the Z-axis direction moving mechanism 520 to move the modeling stage 510 downward (Z-axis direction). Lower by one layer thickness. Then, the control circuit 582 causes the modeled object 900 to model the next layer so as to be stacked on a part of the modeled object 900 that has already been modeled. By repeating the above operations, the three-dimensional modeling apparatus 500 models the modeled object 900 so as to laminate the cured modeling material.

  FIG. 4 is a block diagram illustrating a functional configuration of the data generation device 100. As illustrated in FIG. 4, the data generation device 100 includes a three-dimensional data reception unit 110. The three-dimensional data receiving unit 110 receives three-dimensional data. In this embodiment, a configuration in which the three-dimensional data receiving unit 110 receives STL (Standard Triangulated Language) data as three-dimensional data will be described as an example. However, the three-dimensional data receiving unit 110 uses a three-dimensional CAD (Computer Aided Design). Data, 3D CG (computer graphics) data, 3D scanner data, and the like may be received, and the received data may be converted to STL data on the data generation device 100 side.

  Here, the STL data is data in the STL format, which is one of file formats for storing data representing a three-dimensional shape, and the three-dimensional data is converted into coordinates of a large number of triangle vertices and This is data indicated by a normal vector of a triangular surface.

  The data generation device 100 further includes a cross-sectional shape data generation unit 112. The cross-sectional shape data generation unit 112 converts the three-dimensional data into, for example, cross-sectional shape data (slice data, stacking data) cut in a horizontal direction. That is, the cross-sectional shape data generation unit 112 generates cross-sectional shape data divided from a three-dimensional data into a plurality of layers that are continuous in a predetermined direction.

  The data generation device 100 further includes a data storage unit 114. The data storage unit 114 stores data regarding each of the three-dimensional modeling apparatuses 500A, 500B, and 500C. More specifically, at least the resolutions in the X-axis direction, Y-axis direction, and Z-axis direction of the three-dimensional modeling apparatuses 500A, 500B, and 500C are stored. The data storage unit 114 stores prices per unit volume of various modeling materials that can be used in the three-dimensional modeling system 10. The data storage unit 114 stores the price per unit volume of the support material used in the three-dimensional modeling system 10.

  The data generation device 100 further includes a material cost calculation unit 116. The material cost calculation unit 116 uses the 3D data received by the 3D data reception unit 110, the price per unit volume of the modeling material stored in the data storage unit 114, and the resolution of the 3D modeling apparatus 500. The material cost of the modeling material for modeling the modeled object 900 specified by the three-dimensional data received by the three-dimensional data receiving unit 110 is calculated. Here, further using the price per unit volume of the support material stored in the data storage unit 114, the material cost calculation unit 116 further calculates the material cost of the support material necessary for modeling the model 900. May be.

  The data generation device 100 further includes an operation reception unit 118. The operation accepting unit 118 accepts an operation by the operator such as reducing the material cost by reducing the amount of modeling material for modeling the model 900, for example. Details of the operation by the operator will be described later.

  The data generation device 100 further includes a reduction amount instruction unit 122. The reduction amount instruction unit 122 instructs a reduction amount of the modeling material for modeling the modeling object 900 so as to reduce the material cost calculated by the material cost calculation unit 116 in accordance with the operation received by the operation reception unit 118. To do.

  The data generation device 100 further includes a data change unit 124. The data changing unit 124 changes the cross-sectional shape data generated by the cross-sectional shape data generating unit 112 based on an instruction from the reduction amount instructing unit 122 so as to reduce the amount of modeling material for modeling the model 900. . Details of changing the cross-sectional shape data by the data changing unit 124 will be described later.

  The data generation device 100 further includes an output instruction unit 126. The output instruction unit 126 instructs the three-dimensional modeling apparatus 500 to model the model 900 based on the cross-sectional shape data changed by the data changing unit 124.

  FIG. 5 shows an operation display screen 160 for operating the data generation device 100. The display screen 160 is displayed on the display device 150 (see FIG. 1). As shown in FIG. 5, the display screen 160 includes a modeling apparatus selection unit 162. The modeling apparatus selection unit 162 is a part for selecting the three-dimensional modeling apparatus 500 used for modeling from the modeling apparatuses included in the three-dimensional modeling system 10. More specifically, this is a part for the operator to select which of the three-dimensional modeling apparatus 500A, three-dimensional modeling apparatus 500B, and three-dimensional modeling apparatus 500C is used for modeling.

  The modeling apparatus selection unit 162 has a pull-down menu, for example, and can select the three-dimensional modeling apparatus 500 used for modeling by operating the pull-down menu. In FIG. 5, the modeling apparatus selection part 162 in the state in which the operator selected the three-dimensional modeling apparatus 500A is shown.

  The display screen 160 further includes a modeling material selection unit 164. The modeling material selection unit 164 is a part for selecting a modeling material used for modeling. More specifically, this is a part for the operator to select which material is used for modeling from among a plurality of modeling materials whose prices per unit volume are stored in the data storage unit 114. The modeling material selection unit 164 is, for example, a pull-down menu, and a modeling apparatus used for modeling can be selected by operating the pull-down menu. In FIG. 5, the modeling material selection part 164 in the state as which the modeling material 1 was selected by the operator is shown.

  The display screen 160 further includes a reduction degree instruction unit 166. The reduction degree instruction unit 166 is a part for supporting the degree of reduction for the modeling material used for modeling, and is a part for instructing the degree of reduction of the material cost of the modeling material. The reduction degree instruction unit 166 is, for example, a slider button. By moving the slider 168 to the left and right, the operator can select the degree of reduction of the material cost of the modeling material, and the degree of reduction of the material cost. Can be selected by the operator. More specifically, the amount of the modeling material is reduced as the slider 168 is moved to the left side, and the material cost and the material cost are reduced. The amount of the modeling material and the material cost are reduced as the slider 168 is moved to the right side. It is like that.

  The display screen 160 further includes a trial calculation result display unit 172. The trial calculation result display unit 172 uses the three-dimensional modeling apparatus 500 selected by the modeling apparatus selection unit 162, uses the modeling material selected by the modeling material selection unit 164, and specifies the material according to the specification of the reduction degree instruction unit 166. The result of the trial calculation of the material cost for modeling the model 900 when the cost is reduced is displayed. For this reason, the operator operates the modeling device selection unit 162, the modeling material selection unit 164, and the reduction degree instruction unit 166 while referring to the material cost displayed on the trial calculation result display unit 172. It is possible to select a modeling material device and a modeling material used for modeling in consideration of the necessary material cost.

  The display screen 160 further includes a confirmation instruction unit 174. The confirmation instructing unit 174 uses the modeling device displayed in the modeling device selecting unit 162 to reduce the material cost to the extent instructed by the reduction degree instructing unit 166 using the modeling material displayed in the modeling material selecting unit. This is the part that is operated by the operator when the modeling object 900 is confirmed to be modeled. In other words, the confirmation instruction unit 174 is a portion that is operated when the operator approves the output at the material cost displayed on the trial calculation result display unit 172.

  The above-described data changing unit 124 changes the cross-sectional shape data so as to form a hollow portion inside the molded article 900, for example. Hereinafter, a process of changing the cross-sectional shape data so as to form a hollow portion inside the molded article 900 by the data changing unit 124 will be described.

  In FIG. 6A, the model 900 that does not have the hollow part 920 is shown on the left side, and the respective layers 902 that constitute the model 900 that does not have the hollow part 920 are shown on the right side. In the display screen 160 shown in FIG. 5, when the slider 168 is located on the leftmost side and the data changing unit 124 does not change the cross-sectional shape data, the three-dimensional modeling apparatus 500 is on the right side of FIG. The model 900 in which the hollow part 920 to be shown is not formed is modeled.

  In FIG. 6B, the modeled object 900 in which the hollow part 920 is formed is shown on the left side, and the respective layers 902 constituting the modeled object 900 having the hollow part 920 are shown on the right side. In the display screen 160 shown in FIG. 5, when the slider 168 is in a position moved from the left end portion to the right side, the data changing unit 124 changes the cross-sectional shape data so as to form the hollow portion 920, and the three-dimensional modeling apparatus 500. Forms a shaped article 900 in which a hollow portion 920 as shown on the left side of FIG. 6B is formed.

  In FIG. 6 (C), a model 900 in which a hollow part 920 having a larger volume than the hollow part 920 formed in the model 900 shown in FIG. 6 (B) is formed on the left side. Each layer 902 constituting is shown on the right. In the display screen 160 shown in FIG. 5, when the slider 168 is at a position moved further to the right side than the case where the model 900 shown in FIG. The cross-sectional shape data is changed so as to form a hollow portion 920 having a larger volume than the hollow portion 920 shown in B), and the three-dimensional modeling apparatus 500 is a diagram as shown on the left side of FIG. A model 900 in which the hollow part 920 having a larger volume than the hollow part 920 shown in FIG.

  FIG. 7 is a flowchart illustrating processing until the data generation apparatus 100 according to the first embodiment instructs the three-dimensional modeling apparatus 500 to output. As shown in FIG. 7, when the three-dimensional data receiving unit 110 receives three-dimensional data in step S10, which is the first step, the cross-sectional shape data generating unit 112 generates cross-sectional shape data in step S12, which is the next step. To do.

  In step S14, which is the next step, the material cost calculation unit 116 receives the 3D data received by the 3D data reception unit 110, the price per unit volume of the modeling material stored in the data storage unit 114, and the 3D data. Using the resolution of the modeling apparatus 500, the material cost of the modeling material for modeling the modeled object 900 defined by the three-dimensional data received by the three-dimensional data receiving unit 110 is calculated. The material cost calculated in step S <b> 14 is the material cost before the data changing unit 124 changes the data.

  In step S16, which is the next step, the operation accepting unit 118 accepts a setting change by the operator. As described above, the operation by the operator is performed by the operator operating the modeling apparatus selection unit 162, the modeling material selection unit 164, and the reduction degree instruction unit 166 (see FIG. 5 respectively).

  In step S18 which is the next step, the material cost calculation unit 116 calculates the material cost when the modeling object 900 is modeled with the setting changed in step S16.

  Waiting for the approval by the operator in the next step, step S20, the data changing unit 124 changes the cross-sectional shape data in the next step, step S100. The approval by the operator in step S20 is made by operating the confirmation instructing unit 174 (see FIG. 5) as described above. Details of the change of the cross-sectional shape data in step S100 will be described later.

  In step S302, which is the next step, the output instruction unit 126 instructs the three-dimensional modeling apparatus 500 to output the model 900.

  FIG. 8 is a flowchart showing a first process of changing the cross-sectional shape data in the first embodiment, and is a flowchart showing details of step S100. FIG. 9 is a diagram for explaining a first algorithm for changing the cross-sectional shape data, and for explaining the first algorithm in step S100.

  When changing the cross-sectional shape data, as shown in FIG. 8, the data changing unit 124 acquires the cross-sectional shape data generated by the cross-sectional shape data generating unit 112 in step S102. In this example, as shown in the upper part of FIG. 9, the data changing unit 124 acquires a star-shaped cross-sectional shape.

  In step S104, which is the next step, the data changing unit 124 generates data that defines a shape obtained by reducing the outer peripheral shape of the cross-sectional shape data (hereinafter referred to as “reduced data”). Then, without changing the direction of the reduced data, for example, the reduced data is superimposed on the original cross-sectional shape data so as to coincide with the centroid of the original cross-sectional shape data and the centroid of the reduced data (see the middle stage in FIG. 9). .

  In step S106, which is the next step, the data changing unit 124 deletes the inside of the reduced data (see the lower part of FIG. 9), and reconstructs the cross-sectional shape data in step S108, which is the next step.

  FIG. 10 is a diagram for explaining a second algorithm for changing the cross-sectional shape data in the first embodiment, and is a diagram for explaining the second algorithm in step S100. In the first algorithm described above, reduced data obtained by reducing the outer peripheral shape of the cross-sectional shape data is formed, and this reduced data is superimposed on the shape defined by the data before change, and the inside of the reduced data is deleted. The cross-sectional shape data was changed.

  On the other hand, in the second algorithm, as shown in FIG. 10, the data changing unit 124 changes the cross-sectional shape data so that the inside of the cross-sectional shape data becomes a hollow portion having a predetermined shape. . The example shown in FIG. 10 shows an example in which the cross-sectional shape data is changed so that the inside of the square becomes a hollow portion, but if it is a predetermined shape, for example, a circle, for example, a polygon other than a square, etc. An algorithm may be used in which the data changing unit 124 has a cross-sectional shape so that the inside of the shape other than the square is a hollow part.

  FIG. 11 is a block diagram illustrating a functional configuration of the data generation device 100 included in the three-dimensional modeling system 10 according to the second embodiment of the present invention. In the description of the second embodiment, parts different from the first embodiment described above will be described, and description of the same parts as those of the second embodiment will be omitted.

  In the second embodiment, the data generation apparatus 100 includes a three-dimensional data reception unit 110, a cross-sectional shape data generation unit 112, a data change unit 124, and an output instruction unit, as in the first embodiment. 126, a reduction amount instruction unit 122, and a data storage unit 114. On the other hand, in the second embodiment, the data generation device 100 does not include the operation reception unit 118 that the data generation device 100 has in the first embodiment.

  In the second embodiment, the data generation device 100 includes a modeling direction determination unit 128. Based on the three-dimensional data received by the three-dimensional data receiving unit 110, the modeling direction determining unit 128 determines the direction in which the model 900 is modeled so that, for example, the necessary support material is minimized.

  In the second embodiment, the data generation device 100 further includes a pressure analysis unit 130. For example, the pressure analysis unit 130 analyzes the pressure applied to the modeled object 900 after modeling when the modeled object 900 modeled based on the cross-sectional shape data generated by the cross-sectional shape data generation unit 112 is used.

  FIG. 12 illustrates a process of manufacturing a molded product 980 using the modeled object 900 modeled by the three-dimensional modeling system 10 according to the second embodiment as one of the compression molding molds (lower mold). The process is described. In order to manufacture a molded product 980 using the modeled product 900 as a lower mold, a molding material 982 made of, for example, a resin is inserted into the concave portion 910 of the modeled product 900, and the molding material 982 is compressed by the upper mold 990. During molding of the molded product 980, pressure is applied to the molded article 900 used as the lower mold. For this reason, the molded article 900 needs to have strength that can withstand pressure.

  For example, when modeling the modeling object 900 as a prototype, a model, etc., generally the change of the outer periphery shape of the modeling object 900 is not desirable. On the other hand, when using the molded article 900 as a mold as shown in FIG. 12, it is not desirable to change the shape of the concave portion 910 that is a portion that contacts the molding material 982 and is transferred to the molding material 982. For example, a change in the shape of the outer peripheral surface or the like, which is a portion that does not contact 982, does not cause a problem.

  In this 2nd Embodiment, the data change part 124 changes cross-sectional shape data based on the pressure added to the molded article 900 at the time of use of the molded article 900 after modeling. Hereinafter, a process of changing the cross-sectional shape data by the data changing unit 124 in the second embodiment will be described.

  FIG. 13A shows a model 900 that is modeled based on the cross-sectional shape data that has not been changed by the data changing unit 124, and the upper part is a plan view and the lower part is a cross-sectional view. . In the model 900 shown in FIG. 13A, the thickness of the side wall forming the recess 910 is constant in the height direction.

  FIG. 13B shows a model 900 that is modeled based on the cross-sectional shape data changed by the data changing unit 124, and the upper part is a plan view and the lower part is a cross-sectional view. In the model 900 shown in FIG. 13B, the thickness of the side wall part forming the concave portion 910 is thinner as the part located above and thicker as the part located below. This is because, as a result of the data changing unit 124 correcting the cross-sectional shape data so that each position of the side wall is not excessively thicker than necessary to withstand the pressure, the upper side position where the pressure applied at the time of compression formation is smaller is the side wall. This is because the cross-sectional shape data has been changed so that the thickness of the portion is reduced.

  FIG. 14 is a flowchart showing processing until the data generation apparatus 100 according to the second embodiment instructs the three-dimensional modeling apparatus 500 to output, and the data generation apparatus 100 uses it as a mold as shown in FIG. It is a flowchart which shows the process which instruct | indicates the output of the molded article 900 to be produced. In the processing in the first embodiment described above (see FIGS. 7 and 8), the data changing unit 124 has changed the cross-sectional shape data so that the hollow portion 920 is formed inside the shaped article 900. On the other hand, in the second embodiment, the data changing unit 124 corrects the cross-sectional shape data based on the pressure applied to the modeled article 900 after modeling when the modeled model 900 after modeling is used. This will be specifically described below.

  As shown in FIG. 14, when the three-dimensional data receiving unit 110 receives the three-dimensional data in the first step, step S10, the cross-sectional shape data generating unit 112 generates the cross-sectional shape data in the next step, step S12. To do.

  In step S22, which is the next step, the modeling direction determination unit 128 determines the direction in which the model 900 is modeled so that, for example, the required amount of support material is minimized.

  In step S24, which is the next step, the pressure analysis unit 130 analyzes the pressure applied to the model 900 when compression molding is performed using the model 900 as a mold.

  In step S26, which is the next step, for example, the pressure analysis unit 130 digitizes the pressure information analyzed in step S24, and maps the digitized data to the cross-sectional shape data generated by the cross-sectional shape data generation unit 112.

  In step S28, which is the next step, for example, the pressure information mapped to the cross-sectional shape data by the pressure analysis unit 130 in step S24 is the pressure limit that the shaped object 900 having the shape defined by the cross-sectional shape data can withstand. It is determined for each position in the cross-sectional shape data whether it is equal to or less than the threshold value.

  In step S30, which is the next step, the cross-sectional shape data at a position where it is determined that the pressure information mapped to the cross-sectional shape data is equal to or less than a threshold value that is a pressure limit that the model 900 can withstand is used as a data changing unit. 124 changes. More specifically, the data changing unit 124 reduces the cross-sectional area so that the cross-sectional area does not become excessively larger than the area required to withstand the mapped pressure. Change the data. At this time, the data changing unit 124 corrects the cross-sectional shape data so that the shape of the concave portion 910 does not change.

  In step S302, which is the next step, the output instruction unit 126 instructs the three-dimensional modeling apparatus 500 to output the model 900.

  FIG. 15 shows a three-dimensional modeling apparatus 500 included in the three-dimensional modeling system 10 according to the third embodiment of the present invention. In the description of the third embodiment, parts different from the above-described first embodiment will be described, and description of the same parts as those of the above-described first embodiment will be omitted.

  The three-dimensional modeling apparatus 500 in the first embodiment described above is configured to use a support material and one type of modeling material. On the other hand, the three-dimensional modeling apparatus 500 in the third embodiment is configured to use a support material and two types of modeling materials. Specifically, in the first embodiment, the three-dimensional modeling apparatus 500 includes the modeling material injection nozzle 540 and the modeling material storage unit 542, whereas in the third embodiment, The three-dimensional modeling apparatus 500 includes a first modeling material injection nozzle 544, a first modeling material storage unit 546, a second modeling material injection nozzle, and a second material storage unit 556.

  The first modeling material storage unit 546 stores the first modeling material, and the second injection nozzle injects the first modeling material. The second modeling material storage unit stores a second modeling material, and the second injection nozzle injects the second modeling material. The first modeling material and the second modeling material are different materials, and the prices per unit volume are different from each other. In the following description, it is assumed that the first modeling material has a higher price per unit volume than the second modeling material.

  In the first embodiment described above, when the output instruction unit 126 instructs the 3D modeling apparatus 500 to output, the modeling material injection nozzle 540 is controlled to inject the modeling material, and the support material injection nozzle 550 is required. It was controlled to inject the support material accordingly. On the other hand, in the third embodiment, when the output instruction unit 126 instructs the three-dimensional modeling apparatus 500 to output, the first modeling material injection nozzle 544 is controlled to inject the first modeling material. The second modeling material injection nozzle is controlled to inject the second modeling material as necessary, and the support material injection nozzle 550 is controlled to inject the support material as necessary.

  In the third embodiment, unless the data changing unit 124 corrects the cross-sectional shape data, the model 900 is modeled using the first modeling material.

  In the first embodiment described above, the data changing unit 124 corrects the cross-sectional shape data so as to form the hollow portion 920 in the molded article 900. On the other hand, in the third embodiment, the data changing unit 124 corrects the cross-sectional shape data so as to form the hollow portion 920 in the cross-sectional shape data for modeling using the first modeling material. At the same time, the cross-sectional shape data is corrected so that the hollow portion 920 is filled with the second material.

  In the third embodiment, a part of the modeling object 900 can be modeled by using the second modeling material whose price per unit volume is lower than that of the first modeling material, and the material cost required for modeling is reduced. be able to. Moreover, compared with the case where a hollow part is formed in the molded article 900, the strength of the molded article 900 can be increased.

  Next, a three-dimensional modeling apparatus 500 according to the fourth embodiment of the present invention will be described. In the first embodiment described above, the three-dimensional modeling apparatus 500 constitutes the three-dimensional modeling system 10 together with the data generation apparatus 100, and models the modeling object 900 based on the three-dimensional data generated by the data generation apparatus 100. Was. On the other hand, in the fourth embodiment, the three-dimensional modeling apparatus 500 generates three-dimensional data and further models the modeled object 900.

  FIG. 16 is a block diagram illustrating a functional configuration of a three-dimensional modeling apparatus 500 according to the fourth embodiment. As illustrated in FIG. 16, the three-dimensional modeling apparatus 500 includes all the configurations of the data generation apparatus 100 according to the first embodiment and includes an output unit 590. The output unit 590 receives the instruction from the output instruction unit 126 and outputs the molded object 900. The output unit 590 has all the configurations of the three-dimensional modeling apparatus 500 according to the first embodiment such as the modeling stage 510 and the head unit 530, for example.

  Next, a three-dimensional modeling apparatus 500 according to the fifth embodiment of the present invention will be described. In the second embodiment described above, the three-dimensional modeling apparatus 500 constitutes the three-dimensional modeling system 10 together with the data generation apparatus 100, and models the modeling object 900 based on the three-dimensional data generated by the data generation apparatus 100. Was. On the other hand, in the fifth embodiment, the three-dimensional modeling apparatus 500 generates three-dimensional data and further models the modeled object 900.

  FIG. 17 is a block diagram illustrating a functional configuration of a three-dimensional modeling apparatus 500 according to the fifth embodiment. As illustrated in FIG. 16, the three-dimensional modeling apparatus 500 includes all the configurations of the data generation apparatus 100 according to the second embodiment and includes an output unit 590. The output unit 590 receives the instruction from the output instruction unit 126 and outputs the molded object 900. The output unit 590 has all the configurations of the three-dimensional modeling apparatus 500 according to the second embodiment such as the modeling stage 510 and the head unit 530, for example.

  Next, a sixth embodiment of the present invention will be described. In the third embodiment described above, the three-dimensional modeling apparatus 500 constitutes the three-dimensional modeling system 10 together with the data generation apparatus 100, and models the modeling object 900 based on the three-dimensional data generated by the data generation apparatus 100. Was. On the other hand, in the sixth embodiment, the three-dimensional modeling apparatus 500 generates three-dimensional data and further models the modeled object 900. In other words, in the sixth embodiment, the three-dimensional modeling apparatus 500 has all the configurations of the data generation apparatus 100 in the third embodiment and an output unit 590 (not shown, output unit in FIG. 16). 590).

  As described above, the present invention can be applied to a three-dimensional data generation apparatus, a three-dimensional modeling apparatus, a manufacturing method of a model, and a program.

DESCRIPTION OF SYMBOLS 10 ... Three-dimensional modeling system 100 ... Data generation apparatus 112 ... Cross-sectional shape data generation part 114 ... Data storage part 116 ... Material cost calculation part 118 ... Operation reception part 122 ... Reduction amount instruction unit 124 ... Data change unit 126 ... Output instruction unit 130 ... Pressure analysis unit 160 ... Display screen 162 ... Modeling device selection unit 164 ... Modeling material selection unit 166 Reduction degree instruction part 172 Trial calculation result display part 174 Confirmation instruction part 500 Three-dimensional modeling apparatus 900 Modeling object 920 Hollow part

Claims (13)

A material cost calculation unit for calculating a material cost of a modeling material for modeling a modeling object specified by the three-dimensional data;
A cross-sectional shape data generation unit that generates cross-sectional shape data divided into a plurality of layers continuous in a predetermined direction from the three-dimensional data;
A reduction amount instruction unit for instructing a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated by the material cost calculation unit;
A data changing unit for changing the cross-sectional shape data generated by the cross-sectional shape data generating unit based on an instruction from the reduction amount indicating unit;
A three-dimensional data generation apparatus having   The three-dimensional data generation device according to claim 1, wherein the data changing unit changes the cross-sectional shape data so as to form a hollow portion inside the modeled article.   The data change unit generates reduced data that defines a shape obtained by reducing the outer peripheral shape of the cross-sectional shape data, and changes the cross-sectional shape data so that the inside of the shape defined by the reduced data is a hollow portion. The three-dimensional data generation device described.   The three-dimensional data generation device according to claim 2, wherein the data changing unit changes the cross-sectional data so that the inside of the predetermined shape is a hollow part.   The three-dimensional data generation device according to any one of claims 2 to 4, wherein the data changing unit corrects the cross-sectional shape data so as to fill a hollow portion of the modeled object with another modeling material.   The three-dimensional data generation device according to claim 1, wherein the data changing unit changes the cross-sectional shape data based on a pressure applied to the modeled object after modeling when using the modeled object after modeling.   The three-dimensional data generation device according to any one of claims 1 to 6, wherein the material cost calculation unit calculates a material cost using a price per unit amount of the modeling material and a resolution of an output unit that outputs a modeled object. An operation receiving unit that receives an operation for instructing an amount of the modeling material to be reduced by the operator;
The three-dimensional data generation apparatus according to any one of claims 1 to 7, wherein the material cost reduction instructing unit instructs a reduction in material cost based on an operation of an operator received by the operation receiving unit. A material cost calculation unit for calculating a material cost of a modeling material for modeling a modeling object specified by the three-dimensional data;
A cross-sectional shape data generation unit that generates cross-sectional shape data divided into a plurality of layers continuous in a predetermined direction from the three-dimensional data;
A reduction amount instruction unit for instructing a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated by the material cost calculation unit;
A data changing unit for changing the cross-sectional shape data generated by the cross-sectional shape data generating unit based on an instruction from the reduction amount indicating unit;
An output unit for outputting a modeled object using the cross-sectional shape data changed by the data changing unit;
3D modeling apparatus. A material cost calculating step of calculating a material cost of a modeling material for modeling a modeled object defined by the three-dimensional data;
A cross-sectional shape data generation step for generating cross-sectional shape data divided into a plurality of layers continuous in a predetermined direction from the three-dimensional data;
A reduction amount instruction step for instructing a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated in the material cost calculation step;
A data changing step for changing the cross-sectional shape data generated in the cross-sectional shape data generating step based on an instruction in the reduction amount indicating step;
The manufacturing method of the molded article which has. A material cost calculating step of calculating a material cost of a modeling material for modeling a modeled object defined by the three-dimensional data;
A cross-sectional shape data generation step for generating cross-sectional shape data divided into a plurality of layers continuous in a predetermined direction from the three-dimensional data;
A reduction amount instruction step for instructing a reduction amount of a modeling material used for modeling so as to reduce the material cost calculated in the material cost calculation step;
A data changing step for changing the cross-sectional shape data generated in the cross-sectional shape data generating step based on an instruction in the reduction amount indicating step;
An output step of outputting a model using the cross-sectional shape data changed in the data change step;
A modeling method of a modeled object having A material cost calculating step for calculating a material cost of a modeling material for modeling a modeling object defined by the three-dimensional data;
A cross-sectional shape data generation step for generating cross-sectional shape data divided into a plurality of layers continuous in a predetermined direction from the three-dimensional data;
A reduction amount instruction step for instructing a reduction amount of the modeling material used for modeling so as to reduce the material cost calculated in the material cost calculation step;
A data change step for changing the cross-sectional shape data generated in the cross-sectional shape data generation step based on the instruction in the reduction amount instruction step;
A program that causes a computer to execute. A material cost calculating step for calculating a material cost of a modeling material for modeling a modeling object defined by the three-dimensional data;
A cross-sectional shape data generation step for generating cross-sectional shape data divided into a plurality of layers continuous in a predetermined direction from the three-dimensional data;
A reduction amount instruction step for instructing a reduction amount of the modeling material used for modeling so as to reduce the material cost calculated in the material cost calculation step;
A data change step for changing the cross-sectional shape data generated in the cross-sectional shape data generation step based on the instruction in the reduction amount instruction step;
An output step of outputting a model using the cross-sectional shape data changed in the data change step;
A program that causes a computer to execute.

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