JP2013043409A - Solid article shaping device and control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shape a solid article whose weight is reproduced.SOLUTION: This solid article shaping device for shaping a solid article by stacking shaping materials successively includes at least a data input part for inputting shape information and weight information on a shaping object; a shaping material data base for storing weight information on one piece or a plurality of pieces of the shaping material; a shaping parameter generation part for calculating the packing of shaping material or the mixing ratio of a plurality of pieces of shaping material for enabling the shaping article of the same weight as that of the shaping object, based on shape information and weight information on the shaping object acquired from the data input part, and the weight information on one piece or a plurality of pieces of shaping material acquired from the shaping material data base, and generating the shaping information for laminating the shaping material in accordance with the calculated packing or mixing ratio; and a shaping part for laminating the shaping material according to the shaping information.

Description

  The present invention relates to a three-dimensional object modeling apparatus and a control program, and more particularly, to a three-dimensional object modeling apparatus that models a three-dimensional object that reproduces weight and a control program that generates information for modeling a three-dimensional object that reproduces weight.

  A technique called rapid prototyping (RP) is known as a technique for modeling a three-dimensional solid object. This technology calculates the cross-sectional shape sliced thinly in the stacking direction based on the data (STL (Standard Triangulated Language) format data) that describes the surface of one three-dimensional shape as a collection of triangles. It is a technology to form and form a three-dimensional object. In addition, as a technique for modeling a three-dimensional object, a melt deposition method (FDM: Fused Deposition Molding), an ink jet method, an ink jet binder method, a stereolithography method (SL: Stereo Lithography), a powder sintering method (SLS: Selective Laser Sintering) ) Etc. are known.

  As an apparatus for modeling a three-dimensional object using such a technique, for example, in Patent Document 1 below, a three-dimensional one in which a binder such as polyethylene and a metal alloy such as stainless steel or titanium are previously compounded at a desired ratio. An apparatus for modeling a three-dimensional object is disclosed. In addition, products that have a plurality of heads capable of injecting a modeling material, and that are modeled by appropriately injecting different materials from the individual heads are also on the market. In this product, different modeling materials can be selectively injected from different heads for modeling, and a three-dimensional object can be modeled by changing colors and textures depending on the modeling material in regions or parts.

Japanese Patent No. 3433219

  When modeling a mock-up with a conventional three-dimensional object modeling device, it is possible to reproduce the color and shape, but the weight is determined by the material and volume of the modeling material constituting the model, so There was a problem that the weight could not be reproduced.

  This invention is made | formed in view of the said problem, Comprising: The main objective is for modeling the solid thing modeling apparatus which can model the solid thing which reproduced weight, and the solid thing which reproduced weight. The object is to provide a control program for generating information.

  In order to achieve the above object, the present invention provides a three-dimensional object modeling apparatus that forms a three-dimensional object by sequentially stacking modeling materials, and includes three-dimensional shape information of a modeling object, weight information per unit volume, or total weight. A data input unit that inputs information, a modeling material database that stores weight information per unit volume of one or more modeling materials used for modeling, and the shape of the modeling object acquired from the data input unit Based on the information and weight information and the weight information of the one or more modeling materials acquired from the modeling material database, the degree of density of the modeling material capable of producing a modeling object having the same weight as the modeling object A modeling parameter that calculates a filling rate or a mixing ratio of a plurality of modeling materials and generates modeling information for laminating modeling materials according to the calculated filling rate or mixing ratio And over data generation unit, in which at least and a shaping part for laminating the building material according to the modeling information.

  Further, the present invention is a control program that operates in a three-dimensional object modeling apparatus that models a three-dimensional object by sequentially stacking modeling materials, or a control device that controls the three-dimensional object modeling apparatus, The control device is a data input unit for inputting three-dimensional shape information of the modeling target and weight information per unit volume or total weight information, and the shape information of the modeling target acquired from the data input unit. And a weight information and a pre-stored weight information per unit volume of one or a plurality of modeling materials used for modeling, a modeling object capable of producing a modeling object having the same weight as the modeling object A structure that generates a modeling information for stacking modeling materials in accordance with the calculated filling rate or mixing ratio according to the calculated filling ratio or the mixing ratio is calculated. Parameter generation unit, is intended to function as a.

  According to the three-dimensional object modeling apparatus and the control program of the present invention, a three-dimensional object that reproduces the weight can be modeled.

  The reason is that the three-dimensional object modeling apparatus (control program) acquires the shape information and weight information of the modeled object based on the 3D data of the modeling object, and the shape information and weight information and the weight information of the modeling material are obtained. This is because, based on this, the filling rate of the modeling material or the mixing ratio of the plurality of modeling materials is calculated, and modeling information for modeling each layer is generated.

  As a result, when creating a mockup as a prototype, not only the appearance design but also the weight, hold feeling and usability when held by hand can be reproduced. Can be provided.

It is a figure which classify | categorizes and demonstrates the method of reproducing the weight of a molded article. It is a figure which shows the example of the structure for reproducing a weight by density. It is a figure which shows typically the structure of the head in the case of reproducing a weight using a some modeling material. It is a block diagram which shows the structure of the three-dimensional object modeling apparatus which concerns on one Example of this invention. It is a flowchart figure which shows the modeling procedure (when reproducing a weight) of the solid thing which concerns on one Example of this invention. It is a figure which shows the method (When using one type of modeling material and reproducing a weight with a uniform filling rate) which reproduces the weight of a molded article. It is a figure which shows the method (When using one type of modeling material, changing the filling rate for every part, and reproducing a weight) which reproduces the weight of a modeling thing. It is a figure which shows the method (When using multiple types of modeling material and reproducing a weight with a uniform mixing ratio) which reproduces the weight of a molded article. It is a figure which shows the method (When using multiple types of modeling material and changing a mixing ratio for every part, and reproducing a weight) which reproduces the weight of a modeling thing. It is a figure which shows the method (When using one type of modeling material and changing a filling rate, and reproducing a gravity center position) which reproduces the gravity center position of a molded article. It is a figure which shows the method (When using multiple types of modeling material and reproducing a gravity center position by changing modeling material) which reproduces the gravity center position of a molded article. It is a figure which shows the method (When subdividing a modeling thing into the area | region of a minute volume, and adjusting a weight for every area | region) which reproduces the weight of a modeling thing. It is a figure which shows the method (when reproducing weight using modeling material lighter than a part) which reproduces the weight of a molded article. It is a figure which shows the method (in the case of modeling a surface part with a uniform filling rate or mixing ratio) which reproduces the texture of a molded article. It is a figure which shows the method (when adjusting weight in a layer unit, a line unit, and a dot unit) which reproduces the weight of a molded article. It is a figure which shows the method (when adjusting a weight per layer) which reproduces the weight of a molded article. It is a figure which shows the method (when adjusting a weight per line) which reproduces the weight of a molded article. It is a figure which shows the method (when adjusting a weight per dot) which reproduces the weight of a molded article. It is a figure which shows typically the method of reproducing the moment of inertia of a molded article. It is a figure explaining the variation of the method of reproducing the moment of a molded article. It is a flowchart figure which shows the modeling procedure (when reproducing a weight and a moment of inertia) of the solid object which concerns on one Example of this invention. It is a figure which shows typically the conventional method (melting material deposition method) which models a solid thing. It is a figure which shows typically the conventional method (inkjet method) which models a solid thing. It is a figure which shows typically the conventional method (inkjet binder method) which models a solid thing. It is a figure which shows typically the conventional method (optical modeling method) which models a solid thing. It is a figure which shows typically the conventional method (powder sintering method) which models a solid thing.

  As shown in the background art, a technique called rapid prototyping is known as a technique for modeling a three-dimensional solid object, and as a technique for modeling a three-dimensional object, a melt deposition method (FDM) or an ink jet is used. Methods, an ink-jet binder method, an optical modeling method (SL), a powder sintering method (SLS), and the like are known.

  In the melt deposition method (FDM), as shown in FIG. 22, the head piles up the modeling material while moving like a stroke in the layer at the height. For example, a thermoplastic material is heated to be fluidized, and a cross-sectional shape is drawn while being extruded from one nozzle. Further, if necessary, the thermoplastic support material is heated and melted and extruded from the other nozzle. And when the supplied material cools, a thin hardened layer is formed. After repeating this process, a solid object is formed by dissolving the support.

  In the ink jet method, as shown in FIG. 23, the ink is moved in the Y direction while reciprocating in the X direction as in a general paper ink jet printer. For example, a thermoplastic material (build material) is melted by heating and dropped from one inkjet nozzle based on the cross-sectional shape. Further, if necessary, a thermoplastic support material is heated and melted and dropped from the other inkjet nozzle onto the outer periphery or inner periphery of the model. And when the dripped material cools, a thin hardened layer is formed, and the top of the layer is cut each time it is further stacked. By repeating this process, a three-dimensional object is formed and the support is dissolved later.

  Further, in the ink jet binder method, as shown in FIG. 24, after spreading the powder, the binder is dropped on the basis of the cross-sectional shape with an ink jet nozzle, and the powders are bonded together to form a thin solidified layer. And a powder is spread | laid thinly on the solidified layer made, and a solid thing is modeled by repeating this process.

  Further, in the optical modeling method, as shown in FIG. 25, the surface of the resin is hardened and the lower layer is bonded by scanning the resin liquid surface according to the cross-sectional shape with a laser beam. Then, the table is lowered by the thickness of one layer, and this process is repeated to form a three-dimensional object.

  In the powder sintering method, as shown in FIG. 26, the powders are scanned according to the cross-sectional shape with an infrared laser beam after the powders are spread, thereby forming a thin solidified layer. At this time, bonding to the lower layer is also performed by sintering. And a powder is spread | laid thinly on the solidified layer made, and a solid thing is modeled by repeating this process.

  By using such a technique, it is possible to model a three-dimensional object that looks the same as the modeling object. However, these techniques are techniques for modeling a three-dimensional object using a modeling material having a uniform density, and do not model a three-dimensional object having the same weight as the object to be modeled. It is not possible to reproduce the feeling of holding and feeling of use. In addition, since these methods do not make the position of the center of gravity and moment the same as the modeling target, even if the weight is the same as that of the modeling target, it is impossible to reproduce the feeling of weight when moved.

  Therefore, in one embodiment of the present invention, a modeling parameter generation unit is provided in a three-dimensional object modeling apparatus that operates by a melt deposition method (FDM), an inkjet method, or the like, and the modeling parameter generation unit includes shape information of a modeling object. Then, the weight information and the weight information of the modeling material are used to determine how to stack the modeling material for reproducing the weight. And the same weight, gravity center position, and moment as a modeling target object are implement | achieved by adjusting the filling rate or mixing ratio of modeling material entirely or partially.

  Specifically, in order to adjust the weight of the modeling target based on the weight information of the modeling target, the modeling material is modeled with a uniform density ratio over the entire modeling target. Or in order to adjust the weight distribution of a modeling target object, it models by changing the filling rate of a modeling material for every site | part of modeling target. Alternatively, in order to adjust the weight of the modeling object, modeling is performed with a uniform mixing ratio of a plurality of modeling materials over the entire modeling object. Or in order to adjust the weight distribution of a modeling target object, it models by changing the mixing ratio of a some modeling material for every site | part of modeling target.

  As a result, not only the appearance design but also the weight, hold feeling and usability when held by hand can be reproduced, and a modeled object closer to the real object can be provided to the user.

  In order to describe the above-described embodiment of the present invention in more detail, a three-dimensional object forming apparatus and a control program according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram for explaining a method for reproducing the weight of a modeled object, FIG. 2 is a diagram illustrating an example of a structure for reproducing the weight by density, and FIG. 3 uses a plurality of modeling materials. It is a figure which shows typically the structure of the head in the case of reproducing weight. FIG. 4 is a block diagram showing the configuration of the three-dimensional object forming apparatus of the present embodiment, and FIG. 5 is a flowchart showing the three-dimensional object forming procedure of the present embodiment. FIGS. 6 to 9 and FIGS. 12 to 18 are diagrams illustrating a method for reproducing the weight of the modeled object, and FIGS. 10 and 11 are diagrams illustrating a method for reproducing the center of gravity position of the modeled object. . FIGS. 19 and 20 are diagrams illustrating a method of reproducing the moment of the modeled object, and FIG. 21 is a flowchart illustrating a modeling procedure (in the case of reproducing the moment) of the three-dimensional object of the present example.

  In the following examples, an article to be modeled is referred to as a modeling object, and an article that is modeled on the modeling object and is manufactured by a three-dimensional object modeling apparatus is referred to as a modeling object. Moreover, the raw material utilized when producing a modeling thing is called modeling material.

  The filling rate is the ratio of the volume of the modeling material to the unit space volume and represents the degree of density. When the filling rate is less than 100%, the portion other than the modeling material in the space corresponds to a gas such as air, a liquid such as water, or a vacuum. The mixing ratio is a ratio of the volume ratio (filling rate) of each modeling material in the unit space volume and is synonymous with the filling rate ratio. For example, when the filling rate of modeling material A = 20%, the filling rate of modeling material B = 30%, and the filling rate of modeling material C = 50%, the mixing ratio of ABC is 2 to 3 to 5, and the ABC total The filling rate is 100%. Further, when the filling rate of the modeling material A = 20%, the filling rate of the modeling material B = 20%, and the filling rate of the modeling material C = 50%, the mixing ratio of ABC is 2 to 2: 5, and the ABC total The filling rate is 90%.

  When producing a modeling object based on a modeling object, in a present Example, the weight of a modeling object is reproduced by adjusting the filling rate (roughness degree) or mixing ratio of modeling material entirely or partially. However, there are various methods for reproducing the weight. Hereinafter, a specific description will be given with reference to FIG.

  [Method of using one type of modeling material and making the weight per unit space volume of the modeled object the same in all regions (see FIG. 1 (a))]

  In the case of this method, the shape information and weight information (total weight information) of the modeling object included in the three-dimensional data of the modeling object (CAD (Computer Aided Design) data, design data, etc., hereinafter referred to as 3D data)). Or the weight information per unit volume, or the weight information obtained by adding the weight of each part constituting the modeling object or the weight per unit volume) Based on the weight information per unit volume of the modeling material mounted on the apparatus and the created shape information and weight information, the filling rate of the modeling material is obtained, and a shaped object is produced according to the obtained filling rate. In order to adjust the filling rate, for example, a modeling material may be laminated so as to have a honeycomb structure, a sponge structure, or a corrugated structure shown in FIG. Further, the shape of the head for injecting the modeling material can be devised so that air is engulfed so that cavities are formed at a certain rate.

  [Method of partially changing the weight per unit volume of a modeled object using one type of modeling material (see FIG. 1B)]

  In the case of this method, the shape information and weight distribution information of the model are created from the shape information for each part and the weight information per unit volume included in the 3D data of the modeling object, and the modeling material mounted on the apparatus Based on the weight information per unit volume and the created shape information and weight distribution information, the filling rate of the modeling material for each part is obtained, and each part is shaped according to the filling rate obtained for each part, and the entire shaped article Is made. In order to adjust the filling rate, for example, the honeycomb structure, sponge structure, and corrugated structure shown in FIG. In addition, as described above, the head shape can be devised so that air is entrained, the amount of entrained air can be adjusted, and cavities can be formed at a rate corresponding to the site.

  [Method of equalizing the weight per unit volume of a modeled object in the entire region by mixing a plurality of types of modeling materials uniformly (see FIG. 1C)]

  In the case of this method, the shape information and weight information (total weight information, or weight information per unit volume, or weight per part or weight per unit volume included in the 3D data of the modeling object The shape information and weight information of the modeled object are created from the weight information obtained by adding together, and the weight information per unit volume of the plurality of modeling materials mounted on the apparatus and the created shape information and weight information Based on this, the mixing ratio of the plurality of modeling materials is determined, and the modeling materials mixed according to the determined mixing ratio are stacked to produce a modeled object. In addition, the filling rate of a molded article may be 100%, or may be smaller than 100%. When the filling rate is 100%, as shown in FIG. 3A, a plurality of modeling materials may be mixed and injected in the head (see the left figure), or a plurality of modeling materials may be injected. A mixing unit for mixing may be disposed in front of the head, and the modeling material mixed by the mixing unit may be ejected from the head (see the right figure). Moreover, what is necessary is just to model so that a cavity may be formed uniformly in the whole molded article using the mixed modeling material, when making a filling rate smaller than 100%. Also, the shape of the head can be devised so that air is engulfed so that cavities are formed at a constant rate.

  [Method of partially changing the weight per unit volume of a modeled object using a plurality of types of modeling materials (see FIGS. 1D and 1E)]

  In the case of this method, the shape information and weight distribution information of the model are created from the shape information for each part and the weight information per unit volume included in the 3D data of the modeling object, and the modeling material mounted on the apparatus Based on the weight information per unit volume and the created shape information and weight distribution information, the mixing ratio of a plurality of modeling materials for each part is determined, and the mixed modeling materials are stacked according to the determined mixing ratio for modeling Make a thing. For example, when injecting a modeling material from a head, as shown to Fig.3 (a), you may adjust the mixing ratio of a some modeling material in a head according to a site | part (refer the left figure). A mixing unit for mixing the modeling material may be arranged in the front stage of the head, and the modeling material mixed by the mixing unit may be ejected from the head according to the part (see the right figure). Moreover, as shown in FIG.3 (b), each modeling material may be inject | poured into a separate head, a head may be switched for every site | part, and a desired modeling material may be inject | emitted (refer the left figure). A material selector for switching a plurality of modeling materials may be arranged in the front stage of the head, and the modeling material selected by the material selector may be ejected from the head according to the part (see the right figure).

  Next, the apparatus which produces a molded article using the method shown in FIG. 1 is demonstrated. FIG. 4 is a block diagram illustrating the configuration of the three-dimensional object forming apparatus of the present embodiment. This three-dimensional object forming apparatus is an apparatus that forms a three-dimensional object using a melt deposition method (FDM), an ink jet method, or the like, and includes three blocks, a control block 10, a head moving mechanism block 20, and a modeling material handling block 30. Consists of Hereinafter, each block will be described.

[Control block]
The control block 10 includes a 3D data input unit 11, a modeling parameter generation unit 12, a parts information database 13, a modeling material database 14, and the like.

  The 3D data input unit 11 acquires 3D data (CAD data, design data, etc.) of the modeling object from a computer device or the like, and transfers it to the modeling parameter generation unit 12. The method for acquiring 3D data is not particularly limited, and may be acquired using wired communication, wireless communication, short-range wireless communication such as Bluetooth (registered trademark), USB (Universal Serial Bus) memory, or the like. You may acquire using this recording medium. Further, the 3D data may be acquired directly from a computer that designs the modeling target, or may be acquired from a server that manages / stores the 3D data.

  The modeling parameter generation unit 12 analyzes the 3D data to extract the shape information and weight information of the modeling object, and extracts the shape information and weight information of the extracted modeling object and the modeling material stored in the modeling material database 14. From the weight information, the filling rate and mixing ratio of the modeling material for reproducing the shape and weight of the modeling object are calculated, and converted into modeling information for stacking the modeling material at the calculated filling rate and mixing ratio. Then, mechanism control information for injecting the modeling material to a desired place is transmitted to the head moving mechanism block 20, and slice data defining the modeling material for each layer is transmitted to the modeling material handling block 30.

  The 3D data input unit 11 and the modeling parameter generation unit 12 may be configured as hardware, or may be configured as a control program that functions as the 3D data input unit 11 and the modeling parameter generation unit 12, and the control program may be a three-dimensional object. It is good also as a structure operated with the apparatus which controls a modeling apparatus or the said three-dimensional object modeling apparatus.

  The part information database 13 stores information (information such as the position, shape, and material of each part) relating to each part constituting the modeling object, and provides the stored information to the modeling parameter generation unit 12.

  The modeling material database 14 stores information (information such as weight per unit volume) related to the modeling material mounted on the three-dimensional object modeling apparatus, and provides the stored information to the modeling parameter generation unit 12.

[Head moving mechanism block]
The head moving mechanism block 20 includes a head moving block 21 and a stage moving block 22. The head moving block 21 includes an X direction moving unit 21a and a Y direction moving unit 21b, and the stage moving block 22 includes a Z direction moving unit 22a.

  The head moving block 21 (the X direction moving unit 21a and the Y direction moving unit 21b) drives a motor and a driving mechanism (not shown) according to the mechanism control information acquired from the control block 10, and sets a head for injecting a modeling material to X. It can be freely moved in the direction (lateral direction) and the Y direction (lateral direction).

  The stage moving block 22 (Z direction moving unit 22a) drives a motor and a driving mechanism (not shown) according to the mechanism control information acquired from the control block 10, and moves the modeling stage in the Z direction (downward), or moves the head. The distance between the head and the modeled object is adjusted by moving the block 21 in the Z direction (upward).

[Building material handling block]
The modeling material handling block 30 includes a modeling material supply unit 31, a modeling material injection unit 32, a support material supply unit 33, a support material injection unit 34, and the like.

  The modeling material supply unit 31 selects a modeling material or mixes a plurality of modeling materials according to the slice data acquired from the control block 10 and supplies the selected or mixed modeling material to the head. Further, the modeling material injection unit 32 injects the modeling material onto the modeling stage according to the slice data acquired from the control block 10 and laminates the modeling material at a desired filling rate. In addition, the modeling material supply part 31 and the modeling material injection | emission part 32 may each be mounted in a three-dimensional object modeling apparatus, and may each be mounted in multiple numbers.

  The support material supply unit 33 supplies the head with a support material that is removed by water, heat, a release agent, or the like after the completion of modeling according to the slice data acquired from the control block 10. In addition, the support material injection unit 34 injects a support material onto the modeling stage according to the slice data acquired from the control block 10 and stacks the support materials. This support material plays a role like a pillar that supports the upper layer of the modeling material when modeling an overhanging part or the like when modeling in the upward direction. Therefore, when producing a modeled object that is not overhanging, the support material supply unit 33 and the support material injection unit 34 can be omitted.

  Next, a procedure for producing a modeled object that reproduces the shape and weight using the three-dimensional object modeling apparatus having the above configuration will be described with reference to the flowchart of FIG.

  First, 3D data such as CAD data and design data of a modeling target is created using a computer device. The CAD data and design data include not only the shape information of the modeled object but also the weight information for each part of the modeled object or the weight information and material information for each part constituting the modeled object.

  The 3D data created by the computer device is captured by the control block 10 (3D data input unit 11) of the three-dimensional object modeling apparatus and sent to the modeling parameter generation unit 12 (S101).

  The modeling parameter generation unit 12 analyzes the 3D data and determines whether the number of parts constituting the modeling material is one (S102). When the weight per unit volume of the modeled object is uniform throughout (that is, when the modeled object is composed of one part), the shape information and the total weight information of the 3D data are extracted (S104).

  On the other hand, when the weight per unit volume of the model is different for each part or part (that is, when the model is composed of a plurality of parts), the weight information for each part is specified in the 3D data. If the weight information for each part is defined in the 3D data, the shape information and the weight information are extracted for each part (S105).

  When the weight information for each part is not defined in the 3D data, the shape information is extracted from the 3D data, and information on each part is acquired from the parts information database 13 and converted to the weight information for each part (S106). ). In addition, weight information is directly obtained if it is an intrinsic product such as a battery, and if it is a material such as plastic or iron, weight information is obtained from the weight per unit volume and the part volume obtained from the shape.

  When the weight information for the whole or each part is determined in this way (S107), the modeling parameter generation unit 12 acquires the weight information per unit volume of the modeling material to be used from the modeling material database (S108).

  The modeling parameter generation unit 12 then reproduces the shape and weight of the modeling object based on the shape information and weight information of the modeling object and the weight information per unit volume of the modeling material. Is converted into modeling information (mechanism control information for the head moving mechanism block 20 and slice data for the modeling material handling block 30) that defines which position should be injected with a molding material having a proper filling ratio or mixing ratio (S109). .

  When the conversion is completed, the actual molding operation is started. Specifically, the modeling parameter generation unit 12 sends mechanism control information to the head moving mechanism block 20 and sends slice data to the modeling material handling block 30. Then, the head moving mechanism block 20 moves the position of the head for injecting the modeling material three-dimensionally according to the mechanism control information, and at the same time, the modeling material handling block 30 injects the modeling material according to the slice data and stacks them.

  For example, the head moving mechanism block 20 uses a motor and a drive mechanism (not shown) to move the head for injecting the modeling material in the X direction (horizontal direction), the Y direction (horizontal direction), and the Z direction (height direction). Move freely. In the modeling material handling block 30, the modeling material supply unit 31 supplies the modeling material to the modeling material injection unit 32, and the support material supply unit 33 supplies the support material to the support material injection unit 34. And a modeling material and a support material are laminated | stacked one by one, and a modeling thing is completed.

  By performing the above control, not only the same shape as the modeling object can be reproduced, but also the same weight as the modeling object can be reproduced, and a modeling object closer to the real object can be produced.

  As described above, the basic operation at the time of producing a modeled object in which the shape and weight are reproduced has been described. Specific control will be described below by taking as an example the case of producing a wireless mouse as a modeled object.

First, as shown in FIG. 6, the case where the whole is modeled uniformly using one modeling material is demonstrated. For example, when the weight per unit volume of the modeling object obtained from the 3D data input unit 11 is 3 g / cm ³ , and the weight per unit volume of the modeling material used in the three-dimensional object modeling apparatus is 4 g / cm ^3. Since the filling rate is 3/4 = 0.75 = 75%, the modeling material is laminated and shaped at a filling rate of 75%. At that time, the modeling material is molded so that the modeling material is connected in order to express the appearance after completion of the modeled object and to secure the strength as a structure. If the filling rate is less than 100%, the remaining portion (in this example, the portion of 25%) is created as a space.

When the 3D data obtained from the 3D data input unit 11 is shape information and total weight information, the volume (volume) of the three-dimensional object is obtained from the shape information, and the total weight is divided by the obtained volume to obtain a unit volume. If the per weight is calculated | required, a filling factor can be calculated | required by the method mentioned above. For example, when the volume is 100 cm ³ and the total weight is 300 g, the weight per unit volume is 300/100 = 3 g / cm ³ , so that the filling rate is 3/4 = 0.75 = 75% as described above. It becomes.

  Next, as shown in FIG. 7, the case where one modeling material is used and the whole is modeled uniformly by changing the filling rate (roughness and density) of the modeling material for each part will be described. For example, when the wireless mouse is composed of three parts: a housing (shell), a battery, and a substrate on which optical components are mounted, the housing, the battery, and the substrate are obtained from 3D data obtained from the 3D data input unit 11. Get shape information and weight information for each part.

For example, the volume and weight of each part
Case: material volume: 100 cm ³ , weight: 100 g,
Battery: Material volume: 25 cm ³ , Weight: 100 g,
Substrate: material volume: 25 cm ³ , weight: 50 g,
The weight per unit volume of each part is
Case: 100/100 = 1 g / cm ³
Battery: 100/25 = 4 g / cm ³
Substrate: 50/25 = 2 g / cm ³ can be calculated.

Here, when the weight per unit volume of the modeling material used in the three-dimensional object modeling apparatus is 4 g / cm ³ , the filling rate of each part is
Case: 1/4 = 0.25 = 25%,
Battery: 4/4 = 1.00 = 100%
Substrate: 2/4 = 0.50 = 50% can be calculated.

  As a result of the above calculation, if the housing part is shaped with a filling rate of 25%, the battery part is shaped with a filling rate of 100%, and the substrate part is shaped with a filling rate of 50%, the weight of the wireless mouse is reproduced. be able to. At that time, in the same manner as described above, the modeling material expresses the appearance after the modeling object is completed, and is molded so that the modeling material is connected in order to ensure the strength as the structure. If the filling rate is less than 100%, the remaining part (the housing part is 75% and the substrate part is 50%) is created as a space. In addition, when the weight information per unit volume for every part can be acquired directly from 3D data, the calculation which converts into the weight information per unit volume becomes unnecessary.

Next, as shown in FIG. 8, a case will be described in which a plurality of (in this case, two types) modeling materials are used and the whole is uniformly modeled by changing the mixing ratio of the plurality of modeling materials. For example, the weight per unit volume of the modeling material A is a (g / cm ³ ), the weight per unit volume of the modeling material B is b (g / cm ³ ), and the weight per unit volume of the finished product is m (g / Cm ³ ), the mixing ratio S of the modeling material A and the modeling material B can be obtained by solving the equation: a × S + b × (1−S) = m.

Specifically, the weight per unit volume of the finished product obtained from the 3D data input unit 11 is 3 g / cm ³ , and the weight per unit volume of the modeling material used in the three-dimensional object forming apparatus is 6 g. In the case of two types of / cm ³ and 2 g / cm ³ , S = 1/4 = 0.25 is obtained by solving the equation: 6 × S + 2 × (1−S) = 3. Therefore, the mixing ratio of the modeling material A and the modeling material B is 1: 3.

  Next, as shown in FIG. 9, a case will be described in which a plurality of (two types here) modeling materials are used and the modeling material is changed for each part to uniformly model the whole. For example, when the wireless mouse is composed of three parts: a housing (shell), a battery, and a substrate on which optical components are mounted, the housing, the battery, and the substrate are obtained from 3D data obtained from the 3D data input unit 11. Get shape information and weight information for each part.

For example, the volume and weight of each part
Case: material volume: 100 cm ³ , weight: 100 g,
Battery: Material volume: 25 cm ³ , Weight: 100 g,
Substrate: material volume: 25 cm ³ , weight: 50 g,
The weight per unit volume of each part is
Case: 100/100 = 1 g / cm ³
Battery: 100/25 = 4 g / cm ³
Substrate: 50/25 = 2 g / cm ³ can be calculated.

Here, the weight per unit volume of the modeling material A used in the three-dimensional object modeling apparatus is a (g / cm ³ ), and the weight per unit volume of the modeling material B is b (g / cm ³ ). The mixing ratio S (casing), S (battery), and S (substrate) of the modeling material A and the modeling material B of the parts of the battery and the board respectively solve the equation: a × S + b × (1−S) = m, What is necessary is just to obtain | require S.

Specifically, when the weight per unit volume of the modeling material used in the three-dimensional object modeling apparatus is two types of 4 g / cm ³ (modeling material A) and 1 g / cm ³ (modeling material B),
The mixing ratio of the housing (1 g / cm ³ ) is
4 × S + 1 × (1-S) = 1 to S = 0.0, the proportion of modeling material A = 0%, the proportion of modeling material B = 100%,
The mixing ratio of the battery (4 g / cm ³ ) is
4 × S + 1 × (1−S) = 4 to S = 1.0, the proportion of modeling material A = 100%, the proportion of modeling material B = 0%,
The mixing ratio of the substrate (2 g / cm ³ ) is
From 4 × S + 1 × (1−S) = 2 to S = 0.33, the proportion of the modeling material A = 33.3%, the proportion of the modeling material B = 66.7%. Each part should just mix the modeling material A and the modeling material B in said ratio.

In addition, when the weight per unit volume of the casing is 0.5 g / cm ³ , it is necessary to model lighter than the lighter modeling material B. 0.5 g / cm ³ can be realized by using only / cm ³ ) and modeling with a filling rate of 50%. In that case, although the remaining part which is not filled with modeling material is made into space, in order to ensure intensity | strength, it is preferable to shape | mold so that modeling material may connect. In addition, when the weight information per unit volume for each part can be acquired directly from the 3D data input unit 11, the calculation for converting the weight information per unit volume is not necessary.

  As described above, the method for reproducing the same weight as that of the modeling object has been described. However, even if the weight is the same, if the position of the center of gravity is different, the feeling of weight when held in the hand is different. Then, in order to make it closer to a modeling target object, the same gravity center position as a modeling target object can also be reproduced by changing the filling rate of a modeling material or changing the mixing ratio of a some modeling material.

  For example, when one type of modeling material is used, as shown in FIG. 10, each part (housing, casing) that configures the modeling object from 3D data obtained from the 3D data input unit 11 as described above. The weight of the first battery, the second battery, and the substrate is acquired, and the center of gravity position of the entire modeling object is obtained using a known technique based on the center coordinates of each part and the weight of the part. And while reproducing the weight of the object to be modeled, the vicinity of the center of gravity is increased (densely) in the filling ratio of the modeling material, and otherwise the ratio of the modeling material is decreased (roughly), The center of gravity is also reproduced.

  In addition, when using a plurality of types of modeling materials, as shown in FIG. 11, each part (housing, first battery, first number) constituting the modeling target object from the 3D data obtained from the 3D data input unit 11. (2 batteries, substrate) is obtained, and the center of gravity position of the entire modeling object is obtained using a known method based on the center coordinates of each part and the weight of the part. And while reproducing the weight of the modeling object, use a modeling material with a large (heavy) weight per unit volume near the center of gravity, and use a modeling material with a small (light) weight per unit volume otherwise. The center of gravity of the object to be modeled is also reproduced.

  As described above, when the modeling object is configured by a plurality of parts, the part is modeled by changing the filling rate (roughness / density) and the mixing ratio of the modeling material. However, when the weight is reproduced more finely, FIG. As shown in FIG. 4, the modeling object can be subdivided into minute volume units.

  For example, from the shape information of the entire modeling object obtained from the 3D data input unit 11 and the part information for each part to be configured, the whole is subdivided into microcubes or tangible microsolids in the XYZ directions (vertical and horizontal height directions), Weight information is created for all subdivided three-dimensional areas, and the filling ratio and mixing ratio are faithfully changed for each three-dimensional area based on the obtained weight information for each three-dimensional area. Can reproduce the weight.

  In addition, in the weight information of the modeling target obtained from the 3D data input unit 11, when there is a portion where the weight per unit volume is larger than the heaviest modeling material mounted on the three-dimensional object modeling apparatus, all In some cases, it is not possible to faithfully reproduce the weight. That is, the weight of the portion heavier than the heaviest modeling material cannot be reproduced. However, as long as the entire modeling object is not heavier than the modeling material, it is possible to adjust the total weight and the center of gravity position by changing the weight distribution of the internal region.

  For example, in the case of an egg-shaped model as shown in FIG. 13, the original 3D data has an area with a specific gravity of 2.0 in the core part, and when the specific gravity of the heaviest modeling material is 1.0, It is possible to adjust the overall weight by increasing the volume and maintaining the position of the center of gravity.

  Next, a method for reproducing the texture of the modeling object will be described. Modeled objects produced by a three-dimensional object modeling apparatus are often used as mockups for evaluating the appearance. When looking at the modeled object of the three-dimensional object modeling apparatus, you can not see the inside, but the touch is evaluated when the surface part is exposed to, held by, or touched by the evaluator's line of sight. . That is, it is required to provide the same texture by touching anywhere.

  On the other hand, when the weight adjustment is performed by changing the filling rate (roughness / density) or the mixing ratio of the modeling material, if the modeling parameters are adjusted in the entire surface of the modeled object and the entire area, the following problems occur.

  For example, if the filling rate (roughness / density) is changed for each part of the surface, the dense part will be smooth and smooth with no irregularities, but the rough part will be a little sponge-like and the appearance will also be tactile Will also be uneven. In addition, the dense part has many parts where the modeling materials are connected to each other, and the strength is strengthened. On the other hand, the rough part is less connected to each other, and the strength of the joint is lowered and the strength is weakened. The problem arises.

  Further, when the mixing ratio of the modeling material is changed for each part of the surface, the texture and color may be different due to the difference of the mixing ratio for each part. For example, when mixing a black rubber material and a white resin material, the part where the ratio of the black rubber material is high is dark and softly shaped. Conversely, the part where the ratio of the white resin material is high is dark and hard. Become.

  In order to solve these problems so that the same texture can be reproduced no matter where they are touched, as shown in FIG. 14, when there is only one type of modeling material, the surface portion of the modeling object is Modeling with a different filling rate (roughness) and mixing ratio from the inside. Further, by increasing the filling rate of the modeling material (including the filling rate of 100%) on the surface portion, the bonding between the modeling materials on the surface portion can be increased and the strength can be increased. That is, the space for forming the density is formed in the interior invisible from the surface portion, and the uniform weight, modeling strength, and texture are reproduced in the entire modeled object.

  At this time, the weight per unit volume is different between the surface portion and the inside, but in many cases, the volume of the surface portion is smaller than the inside, so the influence on the overall weight can be ignored and it increases at the surface portion. The lost weight can be offset by reducing the internal weight. Moreover, when there are two or more types of modeling materials, the surface texture can be adjusted by modeling with a predetermined mixing ratio different from the inside, except for the surface portion of the modeled object.

  Next, a method for changing the filling rate (rough density) and the mixing ratio for each part will be described. When laminating the modeling material injected from the modeling head, as shown in FIG. 15, there are a method of controlling for each layer of modeling material, a method of controlling for each line layer, and a method of controlling for each dot. Conceivable. Hereinafter, the advantages of the respective methods will be compared and described.

  As shown in FIG. 16 (a), the modeling material used for each layer of the stack is switched for modeling, or as shown in FIG. 16 (b), the filling rate of a single modeling material for each layer of the stack In the case of a method of modeling by changing the mixing ratio of a plurality of modeling materials, switching speed is not required for switching for each layer compared to switching for each line or switching for each dot. Therefore, there is an advantage that it can be realized by a switching mechanism with low performance.

  Moreover, as shown to Fig.17 (a), the modeling material used for every line of lamination | stacking is switched, and as shown in FIG.17 (b), it fills with the single modeling material for every line of lamination | stacking In the case of the method of modeling by changing the rate and the mixing ratio of a plurality of modeling materials, switching for each line is required to be performed at a high speed compared to switching for each layer, but the modeling object is more finely weighted There is an advantage that it can be controlled. In addition, in a one-stroke modeling method such as a heat melting method, it can be substituted by switching a certain length unit.

  Also, as shown in FIG. 18 (a), the modeling material used for each dot in the stack is switched for modeling, or as shown in FIG. 18 (b), the density of a single modeling material is dense for each dot in the stack. In the case of the method of modeling by changing the ratio and the mixing ratio of a plurality of modeling materials, the switching for each dot is required to be performed at a high speed compared to the switching for each layer or for each line, There is an advantage that the weight can be controlled most finely.

  As described above, since each method has merits, it is determined whether to create a model using any of the methods in consideration of the performance of the three-dimensional object modeling apparatus and the reproducibility required for the model. Can do. In addition, when using a three-dimensional object shaping apparatus that can use either method, the portion with small changes in filling rate (roughness) and mixing ratio is switched for each layer, and changes in filling rate (roughness) and mixing ratio are medium. It is also possible to switch the portion of the degree for each line, and switch the portion having a large change in the filling rate (roughness / density) and the mixing ratio for each dot.

  As described above, the case of reproducing the weight, the center of gravity position, the texture, and the like of the modeling object has been described. However, even if the weight and the center of gravity position are the same, if the moment is different, the feeling of weight when the modeling object is moved is different. Therefore, in order to make it closer to the modeling object, the same moment as the modeling object can be reproduced by changing the filling rate (roughness / density) of the modeling material or changing the mixing ratio of a plurality of modeling materials. it can.

  A method for reproducing a rigid body moment will be described using a bat as shown in FIG. 19 as an example. The shape information and weight information of the bat are acquired from the 3D data input unit 11, and the position of the reference point Y designated in advance is acquired. At this time, the resultant force of the load applied to the grip side and the load applied to the top side is applied to the reference point Y on the bat. Therefore, first, the respective loads are determined by dividing the reference point Y into left and right.

  As a load on the grip side from the reference point Y, a load obtained by multiplying the gravity (Ma × g) applied to the center of gravity on the grip side by the distance L1 to the center of gravity is added. As the load on the top side from the reference point Y, a load obtained by multiplying the gravity (Mb × g) applied to the center of gravity on the top side by the distance L2 to the center of gravity is added. Therefore, the force applied to the reference point Y is a force of (Ma + Mb) × g applied in the direction opposite to the gravity direction and a rotational force of (Mb × g × L2) − (Ma × g × L1) between the left and right loads. Become a force.

  Therefore, in this embodiment, the total weight is set to (Ma + Mb) and the force applied to the reference point Y is (Mb × g × L2) by adjusting the filling rate (rough density) of the modeling material and the mixing ratio of the plurality of modeling materials. )-(Ma × g × L1) to adjust the distribution of the modeling material.

  At this time, the shape information and the weight information obtained from the 3D data input unit 11 may be faithfully reproduced. However, if only the shape, the total weight, and the moment are reproduced, it is not necessary to faithfully reproduce them. Of course, since the total weight is an absolute value and cannot be changed, the moment applied to the reference point can be adjusted to a desired value even if the arrangement of the modeling material is changed. For example, as shown in FIG. 20A, when a load of 200 g is applied to a position that is 100 mm away from the reference point and when a load of 100 g is applied to a position that is 200 mm away from the reference point, Since the action of such force is the same, either weight distribution may be formed.

  Also, it can be reproduced not by a moment of force but by a rotational moment. In general, since the rotational moment can be calculated by the square of the mass and the radius, for example, as shown in FIG. 20 (b), when a 200 g load is rotated at a position 100 mm away from the reference point, The rotational moment is the same when a load of 100 g is applied to a position away from the point by 141 mm (more precisely, √200 mm).

  Hereinafter, the operation of the three-dimensional object forming apparatus when reproducing the moment will be described with reference to the flowchart of FIG.

  First, the modeling parameter generation unit 12 obtains three-dimensional shape information, arrangement information of each part, weight information of each part, or information per unit volume from the 3D data input unit (S201). Next, reference point information designated in advance is obtained (S202). Moreover, the information per unit volume of the mounted modeling material is acquired from the modeling material database (S203). Next, an instruction to select either the moment moment reproduction mode or the rotation moment reproduction mode is obtained (S204).

  When the force moment reproduction mode is selected (Yes in S205), the modeling parameter generation unit 12 obtains the force moment value with respect to the reference point from the obtained shape information and weight information (S206), and the obtained force information is obtained. In order to reproduce the moment value, using the weight information per unit volume of the modeling material obtained from the modeling material database, information that defines the filling rate or mixing ratio of the modeling material for each part of the modeling object (generally, three-dimensional object modeling The apparatus converts the data into slice data for each layer (S207).

  On the other hand, when the rotational moment reproduction mode is selected (No in S205), the modeling parameter generation unit 12 obtains a rotational moment value with respect to the reference point from the obtained shape information and weight information (S208), and the obtained rotational moment. In order to reproduce the value, information specifying the filling rate or mixing ratio of the modeling material for each part of the modeled object using the weight information per unit volume of the modeling material obtained from the modeling material database (generally, the modeling apparatus is a layer For each slice data) (S209).

  Thereafter, the modeling parameter generation unit 12 controls the operation of the head moving mechanism block 20 according to the information defining the filling rate or the mixing ratio of the modeling material for each converted part, and modeling the modeling material handling block 30 The material injection unit is controlled to inject a desired modeling material at a desired position for modeling.

  As described above, in the three-dimensional object modeling apparatus of the present embodiment, the modeled object closer to the real object can be provided to the user in order to reproduce the weight of the object to be modeled. Also, not only the weight of the object to be modeled, but also the center of gravity, texture, and moment are reproduced as necessary, so not only the appearance design but also the weight, hold feeling and usability when held by hand should be reproduced. Can do.

  In addition, this invention is not limited to the said Example, The structure and control can be changed suitably, unless it deviates from the meaning of this invention.

  For example, in the above-described embodiment, the three-dimensional object forming apparatus using the melt deposition method (FDM) or the ink jet method is described, but for any method that can stack the forming material by adjusting the filling rate and the mixing ratio, The same can be applied.

  INDUSTRIAL APPLICABILITY The present invention can be used for a three-dimensional object modeling apparatus such as a 3D printer that models a three-dimensional object and a control program that operates on the apparatus.

DESCRIPTION OF SYMBOLS 10 Control block 11 3D data input part 12 Modeling parameter production | generation part 13 Parts information database 14 Modeling material database 20 Head moving mechanism block 21 Head moving block 21a X direction moving part 21b Y direction moving part 22 Stage moving block 22a Z direction moving part 30 Modeling material handling block 31 Modeling material supply unit 32 Modeling material injection unit 33 Support material supply unit 34 Support material injection unit

Claims (20)

In a three-dimensional object modeling apparatus that forms a three-dimensional object by sequentially stacking modeling materials,
A data input unit for inputting the three-dimensional shape information of the modeling object and the weight information per unit volume or the entire weight information;
A modeling material database for storing weight information per unit volume of one or more modeling materials used for modeling;
Based on the shape information and weight information of the modeling object acquired from the data input unit, and the weight information of the one or more modeling materials acquired from the modeling material database, the same weight as the modeling object Calculate a filling rate representing the degree of density of the modeling material or a mixing ratio of a plurality of modeling materials capable of producing a modeling object, and generate modeling information for laminating the modeling material according to the calculated filling rate or mixing ratio A modeling parameter generator,
A modeling part that laminates the modeling material according to the modeling information;
A three-dimensional object shaping apparatus comprising: The data input unit inputs three-dimensional shape information for each part constituting the modeling object, and weight information for each part or weight information per unit volume,
The modeling parameter generation unit is capable of producing a modeling object having the same weight as the modeling object based on the shape information and weight information for each part of the modeling object and the weight information of the modeling material. The three-dimensional object modeling apparatus according to claim 1, wherein a modeling material for stacking modeling materials is generated in accordance with the calculated filling rate for each part of the modeling material, and the modeling material is stacked according to the calculated filling rate for each part. The data input unit further inputs arrangement information for each part constituting the modeling object,
The modeling parameter generation unit specifies the position of the center of gravity of the modeling object based on the placement information and weight information for each part of the modeling object, and the shape information and weight information for each part of the modeling object, Based on the weight information of the modeling material and the center of gravity position of the specified modeling object, a filling rate for each part of the modeling material capable of producing a modeling object having the same weight and center of gravity as the modeling object The three-dimensional object shaping apparatus according to claim 2, wherein the three-dimensional object shaping apparatus is calculated. The data input unit inputs three-dimensional shape information for each part constituting the modeling object, and weight information for each part or weight information per unit volume,
The modeling parameter generation unit can produce a modeling object having the same weight as the modeling object based on shape information and weight information for each part of the modeling object and weight information of the plurality of modeling materials. 2. The three-dimensional object according to claim 1, wherein a mixing ratio for each part of the plurality of modeling materials is calculated, and modeling information for stacking the modeling material is generated according to the calculated mixing ratio for each part. Object modeling device. The data input unit further inputs arrangement information for each part constituting the modeling object,
The modeling parameter generation unit specifies the position of the center of gravity of the modeling object based on the placement information and weight information for each part of the modeling object, and the shape information and weight information for each part of the modeling object, Based on the weight information of the plurality of modeling materials and the center of gravity position of the specified modeling object, the parts of the plurality of modeling materials capable of producing a modeling object having the same weight and center of gravity as the modeling object The three-dimensional object modeling apparatus according to claim 4, wherein a mixing ratio for each is calculated.   When the predetermined parameter has a larger weight per unit volume than any of the modeling materials, the modeling parameter generation unit has a volume of the modeling material having the largest weight per unit volume among the plurality of modeling materials. The three-dimensional object modeling apparatus according to claim 4, wherein a modeling object having the same weight as the modeling object or the same weight and a center of gravity position can be produced by increasing the number of objects. When a plurality of parts are exposed on the surface of the modeling object,
The modeling parameter generation unit aligns the filling rate of the modeling material or the mixing ratio of the plurality of modeling materials of the exposed portions of the plurality of parts, and the filling rate of the modeling material of the portion other than the exposed portion or the By adjusting the mixing ratio of a plurality of modeling materials, it is possible to produce a modeled object having the same weight or the same weight and center of gravity as the modeled object while making the texture of the entire modeled object uniform. The three-dimensional object formation apparatus as described in any one of Claims 2 thru | or 6.   The modeling parameter generation unit changes the filling ratio of the modeling material or the mixing ratio of the plurality of modeling materials between the surface part where the modeling material is exposed and the inside other than the surface part, and the texture of the modeled object and The solid object shaping apparatus according to any one of claims 1 to 7, wherein the strength is adjusted.   The modeling parameter generation unit generates modeling information for stacking modeling materials having the same filling rate or mixing ratio for each layer, for each line, or for each dot. The three-dimensional object formation apparatus as described in any one of thru | or 8. A reference point setting unit for setting a specific part in the modeling object as a reference point,
The modeling parameter generation unit calculates a moment starting from the reference point designated by the reference point setting unit based on the shape information and weight information of the modeling object, and the shape information and weight of the modeling object Based on the information, the weight information of the one or more modeling materials, and the calculated moment of the modeling object, a modeling object having the same weight and moment as the modeling object can be produced. The solid object modeling apparatus according to any one of claims 1 to 9, wherein a filling rate or a mixing ratio of the plurality of modeling members is calculated. A three-dimensional object modeling apparatus that models a three-dimensional object by sequentially stacking modeling materials, or a control program that operates on a control apparatus that controls the three-dimensional object modeling apparatus,
The three-dimensional object shaping apparatus or the control apparatus,
A data input unit for inputting three-dimensional shape information of the modeling object and weight information per unit volume or total weight information;
Based on the shape information and weight information of the modeling object acquired from the data input unit, and the weight information per unit volume of one or more modeling materials used for modeling, which is stored in advance, the modeling In order to calculate a filling rate representing the degree of density of a modeling material or a mixing ratio of a plurality of modeling materials capable of producing a modeling object having the same weight as an object, and to stack the modeling material according to the calculated filling rate or mixing ratio Modeling parameter generation unit for generating modeling information of
A control program characterized by functioning as The data input unit inputs three-dimensional shape information for each part constituting the modeling object, and weight information for each part or weight information per unit volume,
The modeling parameter generation unit is capable of producing a modeling object having the same weight as the modeling object based on the shape information and weight information for each part of the modeling object and the weight information of the modeling material. The control program according to claim 11, wherein a filling rate for each part of the modeling material is calculated, and modeling information for stacking the modeling material according to the calculated filling rate for each part is generated. The data input unit further inputs arrangement information for each part constituting the modeling object,
The modeling parameter generation unit specifies the position of the center of gravity of the modeling object based on the placement information and weight information for each part of the modeling object, and the shape information and weight information for each part of the modeling object, Based on the weight information of the modeling material and the center of gravity position of the specified modeling object, a filling rate for each part of the modeling material capable of producing a modeling object having the same weight and center of gravity as the modeling object The control program according to claim 12, wherein the control program is calculated. The data input unit inputs three-dimensional shape information for each part constituting the modeling object, and weight information for each part or weight information per unit volume,
The modeling parameter generation unit can produce a modeling object having the same weight as the modeling object based on shape information and weight information for each part of the modeling object and weight information of the plurality of modeling materials. The control according to claim 11, further comprising: calculating a mixing ratio for each part of the plurality of modeling materials, and generating modeling information for stacking the modeling materials according to the calculated mixing ratio for each part. program. The data input unit further inputs arrangement information for each part constituting the modeling object,
The modeling parameter generation unit specifies the position of the center of gravity of the modeling object based on the placement information and weight information for each part of the modeling object, and the shape information and weight information for each part of the modeling object, Based on the weight information of the plurality of modeling materials and the center of gravity position of the specified modeling object, the parts of the plurality of modeling materials capable of producing a modeling object having the same weight and center of gravity as the modeling object The control program according to claim 14, wherein a mixing ratio for each is calculated.   When the predetermined parameter has a larger weight per unit volume than any of the modeling materials, the modeling parameter generation unit has a volume of the modeling material having the largest weight per unit volume among the plurality of modeling materials. The control program according to claim 14, wherein a modeling object having the same weight as the modeling object or the same weight and a center of gravity position can be produced by increasing the modeling object. When a plurality of parts are exposed on the surface of the modeling object,
The modeling parameter generation unit aligns the filling rate of the modeling material or the mixing ratio of the plurality of modeling materials of the exposed portions of the plurality of parts, and the filling rate of the modeling material of the portion other than the exposed portion or the By adjusting the mixing ratio of a plurality of modeling materials, it is possible to produce a modeled object having the same weight or the same weight and center of gravity as the modeled object while making the texture of the entire modeled object uniform. The control program according to any one of claims 12 to 16.   The modeling parameter generation unit changes the filling ratio of the modeling material or the mixing ratio of the plurality of modeling materials between the surface part where the modeling material is exposed and the inside other than the surface part, and the texture of the modeled object and 18. The control program according to claim 11, wherein the control program adjusts the strength.   The modeling parameter generation unit generates modeling information for stacking modeling materials having the same filling rate or mixing ratio for each layer, for each line, or for each dot. The control program as described in any one of thru | or 18. The three-dimensional object shaping apparatus or the control apparatus,
The specific part in the modeling object is caused to function as a reference point setting unit for setting as a reference point,
The modeling parameter generation unit calculates a moment starting from the reference point designated by the reference point setting unit based on the shape information and weight information of the modeling object, and the shape information and weight of the modeling object Based on the information, the weight information of the one or more modeling materials, and the calculated moment of the modeling object, a modeling object having the same weight and moment as the modeling object can be produced. The control program according to any one of claims 11 to 19, wherein a filling rate or a mixing rate of the plurality of modeling members is calculated.

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