WO2018066691A1

WO2018066691A1 - Three-dimensionally shaped object and system and method for shaping same, shaping data for three-dimensionally shaped object and device for geneatating same, generation method, program, and storage medium having program stored thereon

Info

Publication number: WO2018066691A1
Application number: PCT/JP2017/036464
Authority: WO
Inventors: 敦志藤野; 直行藤田; 博之吹田; 伸行相馬
Original assignee: 国立研究開発法人宇宙航空研究開発機構
Priority date: 2016-10-07
Filing date: 2017-10-06
Publication date: 2018-04-12
Also published as: JP6617250B2; JP2018058317A

Abstract

A three-dimensionally shaped object in which shaping material layers are laminated together includes a model body and an accommodation body accommodating the model body and more transparent than the model body. The accommodation body has a substantially straight columnar portion. When a bottom surface of the substantially straight columnar portion is assumed to be on an xy plane of an xyz orthogonal coordinate system, a laminating direction of the shaping material layers is a direction parallel to a z'-axis direction of an x'y'z' coordinate system obtained by rotating the xyz orthogonal coordinate system through a prescribed angle about at least one of an x-axis, a y-axis, and a z-axis (except for a case of rotation only about the z-axis and a case in which all of the angles of rotation are multiples of 90°).

Description

Three-dimensional structure, system and method for modeling, three-dimensional structure modeling data and apparatus for generating the same, generation method, program, and storage medium storing program

The present invention relates to a three-dimensional structure, a system and method for forming the three-dimensional object, data for forming a three-dimensional structure, an apparatus for generating the same, a generation method, a program, and a storage medium storing the program.

The present inventors have proposed to visualize the result of numerical simulation, which is difficult to understand simply by looking at an image on a display, using a three-dimensional additive manufacturing technique (Non-patent Document 1 below). Specifically, the result of the numerical simulation is used as a model body, and a three-dimensional structure composed of a transparent cylindrical body containing the model body is created using a three-dimensional additive manufacturing technique. is there. FIG. 8 is a three-dimensional structure of the numerical simulation result of the turbulent flow situation around the aircraft leg (landing gear).

As a similar technique, Patent Document 1 below discloses a model body, a model, and a model when a three-dimensional model of a subject is three-dimensionally formed based on three-dimensional color image data obtained by imaging a subject such as a person. A technique for creating a three-dimensional structure including a transparent container that contains a body using a three-dimensional stacking technique is disclosed.

According to these technologies, even if the model body contains a structurally weak part such as a relatively thin part or a comparatively thin part or a part floating in the space, there is a transparent container around it. Therefore, it is possible to form such a model body or prevent the model body from being broken.

Japanese Patent Laying-Open No. 2015-205461

However, when such a three-dimensional structure is observed from a certain direction, the model body, which is a simulation result, is blurred and unclear, and the simulation result cannot be observed clearly. The present inventors have found that the phenomenon in which the model body appears blurred and unclear is caused when the model body is observed from a direction perpendicular to the stacking direction of the modeling material of the three-dimensional structure. It was difficult to find an effective measure.

Therefore, the present invention relates to a three-dimensional structure in which a modeling material layer is stacked, including a model body and a housing body that contains the model body and is transparent to the model body and has a substantially straight column body portion. One of the purposes is to substantially prevent the model body from appearing blurred and unclear.

One aspect of the present invention is a three-dimensional structure in which modeling material layers are stacked, and includes a model body, the model body, and a container that is more transparent than the model body. And the stacking direction of the modeling material layer is the xyz orthogonal coordinate system when the bottom surface of the substantially rectangular column portion is on the xy plane of the xyz orthogonal coordinate system. Rotate by a predetermined angle around at least one of the x, y, and z axes (except when rotating only around the z axis and when all rotation angles are multiples of 90 °) The present invention provides a three-dimensional structure that is parallel to the z′-axis direction of the x′y′z ′ coordinate system.

The predetermined angle may be 20 ° to 70 °, 110 ° to 160 °, 200 ° to 250 °, or 290 ° to 340 °.

As for the stacking direction of the modeling material layer, the xyz orthogonal coordinate system when the bottom surface of the substantially columnar body is on the xy plane of the xyz orthogonal coordinate system is two of the x axis, the y axis, and the z axis. A direction parallel to the z′-axis direction of the x′y′z ′ coordinate system rotated about the axis by 20 ° to 70 °, 110 ° to 160 °, 200 ° to 250 °, or 290 ° to 340 °. Can be.

The substantially rectangular parallelepiped portion is a substantially rectangular parallelepiped portion, and when one side surface of the rectangular parallelepiped portion is on the zx plane, the axis that rotates the xyz orthogonal coordinate system is the y-axis, The predetermined angle may be an angle formed by a diagonal line with a side on the x-axis of the one side surface.

The substantially rectangular parallelepiped portion is a substantially rectangular parallelepiped portion, and when one side surface of the rectangular parallelepiped portion is on the yz plane, the axis that rotates the xyz orthogonal coordinate system is the x-axis, The predetermined angle may be an angle formed by a diagonal line with a side on the y-axis of the one side surface.

The substantially rectangular parallelepiped portion is a substantially rectangular parallelepiped portion, and when one side surface of the rectangular parallelepiped portion is on the yz plane, the axis that rotates the xyz orthogonal coordinate system is the z axis, The predetermined angle may be an angle formed by a diagonal line with a side on the y-axis of the bottom surface.

The model body may be a model body showing a numerical simulation result.

One aspect of the present invention is to form a three-dimensional structure including a model body and a housing body that contains the model body and has a substantially straight column body by sequentially forming a modeling material layer and stacking them. An apparatus for generating modeling data for acquiring, or acquiring / generating synthetic modeling data that acquires or generates synthetic modeling data obtained by synthesizing the model body and the container based on modeling data of the model body And the stacking direction of the modeling material layer is based on the synthetic modeling data, and the bottom surface of the substantially columnar body is on the xy plane of the xyz orthogonal coordinate system, the xyz orthogonal coordinate system is x Rotate a predetermined angle around at least one of the axis, y-axis, and z-axis (except when rotating only around the z-axis and when all rotation angles are multiples of 90 °) Z 'axis direction of the x'y'z' coordinate system and There is provided apparatus for generating a modeling data comprising a 3D object modeling data generating unit that generates a shaping data of the 3D object such that the row direction.

One aspect of the present invention is to form a three-dimensional structure including a model body and a housing body that contains the model body and has a substantially straight column body by sequentially forming a modeling material layer and stacking them. A method of generating modeling data for performing the xyz orthogonal coordinate system when the stacking direction of the modeling material layer is such that the bottom surface of the substantially rectangular column is on the xy plane of the xyz orthogonal coordinate system. Rotate by a predetermined angle around at least one of the x, y, and z axes (except when rotating only around the z axis and when all rotation angles are multiples of 90 °) Generating a modeling data including a step of generating modeling data of the three-dimensional model so as to be in a direction parallel to the z′-axis direction of the x′y′z ′ coordinate system. is there.

One aspect of the present invention provides a program for causing a computer to execute the method for generating modeling data.

One aspect of the present invention provides a computer-readable storage medium storing the program.

One aspect of the present invention is to form a three-dimensional structure including a model body and a housing body that contains the model body and has a substantially straight column body by sequentially forming a modeling material layer and stacking them. The modeling material layer is laminated in the stacking direction of the modeling material layer with respect to the xyz orthogonal coordinate system when the bottom surface of the substantially rectangular column is on the xy plane of the xyz orthogonal coordinate system, x rotated by a predetermined angle around at least one of the y-axis and z-axis (except when rotating only around the z-axis and when all rotation angles are multiples of 90 °) The data for modeling which is a direction parallel to the z'-axis direction of the 'y'z' coordinate system is provided.

One aspect of the present invention provides a computer-readable storage medium storing the modeling data.

One aspect of the present invention is the above-described tertiary including the model body and the container that contains the model body and has a substantially straight column body portion that is transparent to the model body using the modeling data. A method of modeling an original model by forming the modeling material layers in order and laminating them.

One aspect of the present invention is a substantially straight column body that contains the model body and the model body, and is more transparent than the model body, based on the modeling data generation device and the modeling data. A three-dimensional modeling system including a three-dimensional modeling apparatus that models a three-dimensional modeled object including a container having a portion by sequentially forming a modeling material layer and stacking the modeling material layers.

According to the present invention having the above-described configuration, a model body, and a tertiary layer in which a modeling material layer is stacked, including a model body and a housing body that has a portion of a substantially straight column body that is more transparent than the model body. In the original model, it can be substantially prevented that the model body looks blurred.

It is a figure showing the whole 3D modeling system composition concerning one embodiment of the present invention. It is a figure showing an example of hardware constitutions of modeling data generation device 10 concerning one embodiment of the present invention. It is a figure which shows the structure of the three-dimensional modeling apparatus which concerns on one embodiment of this invention. It is a flowchart of the example of the modeling process of the three-dimensional modeling system which concerns on one embodiment of this invention. It is the schematic diagram which looked at the three-dimensional modeled object modeled by the modeling method concerning one embodiment of the present invention, and the three-dimensional modeled object modeled by the conventional method from the y-axis direction, respectively. It is a photograph when the three-dimensional modeled object modeled by the modeling method concerning one embodiment of the present invention and the three-dimensional modeled object modeled by the conventional method are observed from the z-axis direction. It is a photograph when the three-dimensional modeled object modeled by the modeling method concerning one embodiment of the present invention and the three-dimensional modeled object modeled by the conventional method are observed from the x-axis direction. It is a photograph when the three-dimensional modeled object modeled by the modeling method concerning one embodiment of the present invention and the three-dimensional modeled object modeled by the conventional method are observed from the y-axis direction. In the case where the substantially rectangular parallelepiped portion is a rectangular parallelepiped portion, when one side surface of the rectangular parallelepiped portion is on the zx plane, the xyz orthogonal coordinate system is set around the y axis, and the x axis of the one side surface It is the schematic diagram which looked at the three-dimensional structure modeled by the modeling method rotated only by the angle which the upper side and a diagonal line make from the y-axis direction. It is a conventional example of the three-dimensional structure of the numerical simulation result.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram illustrating an overall configuration of a three-dimensional modeling system according to one embodiment of the present invention, and FIG. 3 is a diagram illustrating a configuration of a three-dimensional modeling apparatus according to one embodiment of the present invention. . As shown in FIG. 1, the three-dimensional modeling system 1 according to this embodiment includes a modeling data generation device 10 and a three-dimensional modeling device 20. The three-dimensional modeling apparatus 20 forms on the modeling stage 230 a modeling material layer including a model material and a support material for supporting and / or covering the model material in contact with the model material during the modeling operation of the three-dimensional modeling object 50. The three-dimensional structure 50 is formed by sequentially forming and stacking. In the stacking direction of the modeling material layer, the three-dimensional modeling apparatus 20 has a so-called overhanging part or isolated part in which the width of the model material at the upper position is larger than the width of the model material at the lower position, By arranging the support material around the model material at the lower position, the support material is automatically provided so as to support the overhang portion and the isolated portion from below. The support material can be removed after the modeling of the three-dimensional structure 50 is completed. For example, if the support material is water-soluble, it can be removed if immersed in water.

<Modeling data generator>
The modeling data generation apparatus 10 includes a 3D data reception unit 101, a synthetic modeling data acquisition / generation unit 103, a three-dimensional modeling modeling data generation unit 105, and a setting unit 109. The modeling data generation device 10 may be a server, a PC, a smartphone, a tablet terminal, or the like, and part or all of the modeling data generation device 10 is the same as part or all of the three-dimensional modeling device 20. It may be configured as a physical device. The modeling data generation device 10 does not have to be configured as one physical device, and may be configured from a plurality of physical devices.

The setting unit 109 outputs various setting data input via the setting unit 109 to each unit of the modeling data generation apparatus 10.

The 3D data receiving unit 101 receives 3D data (CAD data, numerical simulation result visualization data, etc.) indicating the three-dimensional shape of the modeling object directly or via a network or a storage medium, and acquires and generates synthetic modeling data. Send to part 103. The 3D data may include not only the three-dimensional shape of the modeling target but also color information related to the modeling target.

The synthetic modeling data acquisition / generation unit 103 receives the 3D data of the modeling object from the 3D data receiving unit 101, converts the 3D data into 3D modeling data, for example, STL (Stereo) Lithography) data, Data for modeling of the model body 501 corresponding to the modeling object is obtained. Then, based on the setting data such as the shape and dimensions of the container 503 input via the setting unit 109, the model body 501 and the model body 501 having a substantially columnar portion are accommodated. STL data for synthetic modeling, which is synthetic modeling data obtained by synthesizing the container 503 that is more transparent than 501, is generated. The data format of the synthetic modeling data is not limited to STL data, and any appropriate data format can be used. The synthetic modeling data acquisition / generation unit 103 may acquire the already generated synthetic modeling data without generating the synthetic modeling data without going through the 3D data receiving unit 101.

The three-dimensional structure modeling data generation unit 105 is a composite acquired or generated by the synthetic modeling data acquisition / generation unit 103 based on the setting data such as the rotation axis and the rotation angle input via the setting unit 109. Regarding the three-dimensional structure 50 represented by the STL data for modeling, the stacking direction of the modeling material layer of the three-dimensional structure 50 is such that the bottom surface of the substantially columnar body portion of the container 503 is the xy plane of the xyz orthogonal coordinate system. The xyz Cartesian coordinate system is assumed to be on a predetermined angle around at least one of the x-axis, y-axis, and z-axis (provided that the rotation is performed only around the z-axis, and all rotation angles are The orientation of the three-dimensional structure 50 is set so that the direction is parallel to the z′-axis direction of the x′y′z ′ coordinate system rotated only by a multiple of 90 °. STL data for modeling the object 50 is generated. For example, the stacking direction of the modeling material layer of the three-dimensional structure 50 is such that the xyz orthogonal coordinate system is the x axis, the y axis, and the z axis when the bottom surface of the substantially columnar body is on the xy plane of the xyz orthogonal coordinate system. The orientation of the three-dimensional structure 50 is set so as to be parallel to the z′-axis direction of the x′y′z ′ coordinate system rotated by 45 ° around two axes of STL data for modeling of the model 50 is generated. The predetermined angle may be excluded unless all the rotation angles are the same multiple of 90 °.

FIG. 2 is a diagram illustrating an example of a hardware configuration of the modeling data generation apparatus 10 according to an embodiment of the present invention. The modeling data generation apparatus 10 includes a CPU 10a, a RAM 10b, a ROM 10c, an external memory 10d, an input unit 10e, an output unit 10f, and a communication unit 10g. The RAM 10b, ROM 10c, external memory 10d, input unit 10e, output unit 10f, and communication unit 10g are connected to the CPU 10a via the system bus 10h.

The CPU 10a comprehensively controls each device connected to the system bus 10h.

The ROM 10c and the external memory 10d store a BIOS and OS, which are control programs for the CPU 10a, and various programs and data necessary for realizing functions executed by the computer.

The RAM 10b functions as a main memory and work area of the CPU. The CPU 10a implements various operations by loading a program or the like necessary for execution of processing from the ROM 10c or the external memory 10d to the RAM 10b and executing the loaded program.

The external memory 10d is composed of, for example, a flash memory, a hard disk, a DVD-RAM, a USB memory, and the like.

The input unit 10e receives an operation instruction from a user or the like. The input unit 10e includes input devices such as an input button, a keyboard, a pointing device, a microphone, and a camera, for example.

The output unit 10f outputs data processed by the CPU 10a and data stored in the RAM 10b, the ROM 10c, and the external memory 10d. The output unit 10f includes an output device such as a CRT display, an LCD, an organic EL panel, a printer, and a speaker.

The communication unit 10g is an interface for connecting / communication with an external device via a network or directly. The communication unit 10g includes an interface such as a serial interface or a LAN interface.

The computer hardware configuration of the three-dimensional modeling apparatus 20 is the same.

Each part of the modeling data generation apparatus shown in FIG. 1 includes a CPU 10a, a RAM 10b, a ROM 10c, an external memory 10d, an input unit 10e, an output unit 10f, a communication unit 10g, and the like. Realized by using as a resource. The same applies to a slice data generation unit 210 and a control unit 220 of the 3D modeling apparatus 20 described later.

<Three-dimensional modeling device>
As shown in FIG. 3, the three-dimensional modeling apparatus 20 includes a slice data generation unit 210, a control unit 220, a modeling stage 230 that can move in the stacking direction (Z direction) of the modeling material layer, and a head unit 240. The head unit 240 includes a first printer head 241 that discharges opaque model material droplets on the modeling stage 230, a second printer head 243 that discharges transparent model material droplets on the modeling stage 230, and the modeling stage 230. A third printer head 245 that discharges droplets of the support material is provided thereon, and UV

light sources

247 and 248 for photocuring the applied modeling material. The three-dimensional modeling apparatus 20 does not need to be configured as one physical apparatus, and may be configured from a plurality of physical apparatuses. Further, the model material ejected from the first printer head 241 is not limited to the opaque model material, and the model material ejected from the second printer head 243 is ejected from the first printer head 241. A transparent or translucent model material may be used as long as the model material is transparent.

The slice data generation unit 210 generates slice data of each modeling material layer sliced in the stacking direction from the STL data for modeling of the three-dimensional model 50 generated by the three-dimensional model modeling data generation unit 105. Send to section 220. The modeling STL data of the three-dimensional structure 50 may be passed from the modeling data generation apparatus 10 to the three-dimensional modeling apparatus 20 via a network, a storage medium, or the like, or the three-dimensional structure modeling data generation unit 105. And the slice data generation unit 210 may be sent directly in the same physical device.

For each slice data, an opaque model material region is set for the modeling data of the model body 501 of the three-dimensional structure 50, and a transparent model material region is set for a portion other than the model body 501 of the three-dimensional structure 50. Is done. Moreover, in this embodiment, since the attitude | position of the three-dimensional structure 50 is rotated as mentioned above, an overhang part arises. Therefore, as described above, the support material is automatically provided so as to support the overhang portion from below, but the support material region corresponding to the support material is also set for each slice data.

The control unit 220 controls the operation of the entire 3D modeling apparatus 20 during the modeling operation of the 3D model 50.

The modeling stage 230 has a horizontal and flat modeling surface, and is a movable stage for stacking a modeling material layer on the modeling surface to form the three-dimensional modeled object 50. Z direction).

The elevating drive unit 235 moves the modeling stage 230 vertically downward by a distance corresponding to the thickness of the modeling layer every time the formation of each modeling material layer is completed by a control signal from the control unit 220.

The head unit 240 can be moved in the main scanning direction (X direction) and the sub-scanning direction (Y direction) above the modeling stage 230 by driving means (not shown) based on a control signal from the control unit 220.

When a modeling material layer for one layer is formed, the first printer head 241 drops an opaque model material droplet in a region where an opaque model material region is set for slice data corresponding to the modeling material layer. Is discharged. By repeating this discharge operation a plurality of times while shifting in the sub-scanning direction, an opaque model material region of the modeling material layer is formed in a desired region of the modeling stage 230. The opaque model material region is cured by irradiating ultraviolet rays from the UV

light sources

247 and 248.

When a modeling material layer for one layer is formed, the second printer head 243 drops a transparent model material droplet in a region where a transparent model material region is set for slice data corresponding to the modeling material layer. Is discharged. By repeating this discharge operation a plurality of times while shifting in the sub-scanning direction, a transparent model material region of the modeling material layer is formed in a desired region of the modeling stage 230. The transparent model material region is cured by irradiating ultraviolet rays from the UV

light sources

247 and 248.

When a modeling material layer for one layer is formed, the third printer head 245 ejects droplets of the support material in an area where the support material area is set for slice data corresponding to the modeling material layer. To do. By repeating this discharge operation a plurality of times while shifting in the sub-scanning direction, a support material region of the modeling material layer is formed in a desired region of the modeling stage 230. The support material region is cured by irradiation of light energy by irradiating ultraviolet rays from UV

light sources

247 and 248.

Here, as the opaque model material, the transparent model material, and the support material, a thermosetting material or a material that is cured by natural cooling may be used in addition to the photocurable material as described above.

As described above, the modeling stage 230 and the head unit 240 are moved by the control signal from the control unit 220, and the opaque model material is transferred from the first printer head 241 based on the slice data sent from the control unit 220. The 3D model 50 is modeled by supplying the transparent model material from the second printer head 243 and the support material from the third printer head 245 to the modeling stage 230, respectively.

Based on the above system configuration, an example of processing of the three-dimensional modeling system according to one embodiment of the present invention will be described below with reference to FIGS. FIG. 4 is a flowchart of an example of a modeling process of the three-dimensional modeling system according to one embodiment of the present invention. For convenience of explanation, the shape of the container 503 is described as a cube.

The 3D data receiving unit 101 receives 3D data (CAD data, numerical simulation result visualization data, etc.) indicating the three-dimensional shape of the modeling object (S1).

The synthetic modeling data acquisition / generation unit 103 converts the 3D data of the modeling target received by the 3D data reception unit 101 into, for example, STL (StereoLithography) data as data for three-dimensional modeling, and the model body 501 Data for modeling is obtained (S2). Then, based on the setting data such as the shape and dimensions of the container 503 input via the setting unit 109, the model 501 and the synthetic modeling data obtained by synthesizing the container 503 having a substantially straight column part. Certain synthetic modeling STL data is generated (S3). In this embodiment, a cube is input as setting data as the shape of the container 503. The synthetic modeling data acquisition / generation unit 103 may acquire the already generated synthetic modeling data without generating the synthetic modeling data without going through the 3D data receiving unit 101.

The three-dimensional structure modeling data generation unit 105 is a composite acquired or generated by the synthetic modeling data acquisition / generation unit 103 based on the setting data such as the rotation axis and the rotation angle input via the setting unit 109. Regarding the three-dimensional structure 50 represented by the STL data for modeling, the stacking direction of the modeling material layer of the three-dimensional structure 50 is such that the bottom surface of the substantially columnar body portion of the container 503 is the xy plane of the xyz orthogonal coordinate system. The xyz Cartesian coordinate system is assumed to be on a predetermined angle around at least one of the x-axis, y-axis, and z-axis (provided that the rotation is performed only around the z-axis, and all rotation angles are The orientation of the three-dimensional structure 50 is set so that the direction is parallel to the z′-axis direction of the x′y′z ′ coordinate system rotated only by a multiple of 90 °. Generate STL data for modeling the object 50 (S ). For example, a setting for rotating the xyz coordinate system by 45 ° around the y-axis about the plane parallel to the xy plane of the cubic container 503 is input, and according to the setting, the modeling material layer of the three-dimensional structure 50 is input. The xyz Cartesian coordinate system is rotated by 45 ° around the y-axis axis when the stacking direction is such that the bottom surface of the substantially columnar body portion of the container 503 is on the xy plane of the xyz Cartesian coordinate system. The posture of the three-dimensional structure 50 is set so as to be parallel to the z′-axis direction of the x′y′z ′ coordinate system, and STL data for modeling the three-dimensional structure 50 is generated. At this time, the rotation of the three-dimensional structure 50 expressed by the STL data for synthetic modeling in the modeling space defined by the XYZ orthogonal coordinate system of the three-dimensional modeling apparatus 20 is input via the setting unit 109. The STL data for modeling of the three-dimensional structure 50 may be generated by setting based on data such as the axis and the rotation angle. That is, a setting for rotating the three-dimensional structure 50 by −45 ° around the Y axis with a plane parallel to the XY plane of the cubic container 503 as the bottom surface is input, and the posture of the three-dimensional structure 50 is changed according to the setting. The STL data for modeling of the three-dimensional structure 50 may be generated by setting.

When the STL data for modeling of the three-dimensional structure 50 generated by the three-dimensional structure modeling data generation unit 105 is input to the slice data generation unit 210, the slice data generation unit 210 Slice data of each modeling material layer sliced in the stacking direction is generated from the modeling STL data (S5).

For each slice data, an opaque model material region is set for the model body 501, and a transparent model material region is set for a portion other than the model body 501 of the three-dimensional structure 50. Moreover, in this embodiment, since the attitude | position of the three-dimensional structure 50 is rotated as mentioned above, an overhang part arises. Therefore, as described above, the support material is automatically provided so as to support the overhang portion from below, but the support material region corresponding to the support material is also set for each slice data.

Then, the modeling stage 230 and the head unit 240 are moved by the control signal from the control unit 220, and the opaque model material is transferred from the first printer head 241 based on the slice data sent from the control unit 220. By supplying the transparent model material from the printer head 243 and the support material from the third printer head 245 to the modeling stage 230, the three-dimensional structure 50 including the model body 501 and the container 503 is formed, The support material portion S is also shaped (S6).

The left view of FIG. 5 shows the three-dimensional structure 50 formed by the forming method of the present embodiment, the right view of FIG. 5, and the three-dimensional structure 50 ′ formed by the conventional forming method from the y-axis direction. It is a schematic diagram. In the three-dimensional structure 50 ′ modeled by the conventional modeling method, since the stacking direction is the direction perpendicular to the bottom surface parallel to the xy plane, each of the cubes that are assumed to be main observation surfaces. When the model body 501 was observed from the x-axis direction and the y-axis direction perpendicular to the cube side surface of the surface, the model body 501 looked blurred. On the other hand, in the three-dimensional structure 50 modeled by the modeling method of the present embodiment, since the stacking direction is perpendicular to the y-axis direction, it is blurred when the model body 501 is observed from the y-axis direction. However, since the stacking direction is not perpendicular to the x-axis direction and the z-axis direction and is inclined 45 °, both the observation from the x-axis direction and the observation from the z-axis direction are possible. The model body 501 can be clearly seen without blurring.

In the above-described embodiment, a setting for rotating the xyz orthogonal coordinate system around the y axis by 45 ° about the plane parallel to the xy plane of the cubic container 503 is input, and the three-dimensional structure 50 according to the setting. The xyz orthogonal coordinate system is 45 around the axis of the y-axis when the stacking direction of the modeling material layers is such that the bottom surface of the substantially rectangular column portion of the container 503 is on the xy plane of the xyz orthogonal coordinate system. The orientation of the three-dimensional structure 50 is set so as to be parallel to the z′-axis direction of the x′y′z ′ coordinate system rotated by °, and STL data for modeling the three-dimensional structure 50 is generated. However, if the xyz orthogonal coordinate system is rotated by 45 ° around the y axis and further rotated by 45 ° around the x axis, the stacking direction is not perpendicular to the y axis direction and is inclined by 45 °. Therefore, even if the model body 501 is observed from the y-axis direction, It can be seen in the clear without blurring even by observing the model 501 from the direction perpendicular to all the faces of the cube. FIGS. 6A, 6B, and 6C are examples in which the model body 501 is observed from the z-axis direction, the x-axis direction, and the y-axis direction when the cube is rotated by 45 ° around the y-axis and the x-axis, and the rotation. FIG. 6 is a photograph showing an example when the model body 501 ′ is observed from the z-axis direction, the x-axis direction, and the y-axis direction, respectively, and also from these photographs, the direction perpendicular to all the faces of the cube From this, it can be seen that even if the model body 501 is observed, it can be clearly seen without blurring.

In addition, the direction orthogonal to the stacking direction is the diagonal direction of the side surface of the container, and the diagonal direction of the side surface of the container is generally the direction in which the probability that the model body is observed is low. The observation range that can be seen in is widened.

According to the present embodiment, the stacking direction of the modeling material layer of the three-dimensional structure is such that the bottom surface of the portion of the substantially columnar body that the container has is on the xy plane of the xyz orthogonal coordinate system. A predetermined angle around at least one of the x, y, and z axes (except when rotating only around the z axis and when all rotation angles are multiples of 90 °) Since the direction is parallel to the z′-axis direction of the x′y′z ′ coordinate system that has been rotated only by this, the stacking direction is not perpendicular to the axial direction other than the rotational axis, and the axial direction other than the rotational axis For observation, the model body can be clearly seen without blurring. When the container has a substantially rectangular column part, the main direction assumed to observe the model body is a direction perpendicular to or substantially perpendicular to the bottom surface or side surface of the substantially columnar part of the container. Since the direction is the direction, the model body can be clearly seen without being more blurred with respect to the observation from the bottom surface or the side surface perpendicular to the axial direction other than the rotation axis. This is particularly advantageous when precise observation is required, such as when the model body is a numerical simulation result.

According to the present embodiment, even a thin or thin object that is difficult to form as a three-dimensional structure by itself can be expressed in three dimensions, and the model body can be clearly observed in various directions from each surface of the polyhedron. can do. In addition, even objects that are difficult to model as a three-dimensional model by itself, such as flying objects in the space due to instantaneous phenomena, can be expressed in three dimensions, and the model body can be clearly displayed in various directions from each side of the polyhedron. Can be observed. In addition, by dividing one object into a plurality of parts and using the divided parts as model bodies, they are housed in a transparent housing corresponding to each of them, and each shaped three-dimensional structure is combined. It is also possible to observe the inside of one object as a cross section.

As described above, in the embodiment of FIG. 5, when the substantially rectangular parallelepiped portion is a cubic portion which is a rectangular parallelepiped, and one side surface of the rectangular parallelepiped portion is on the zx plane, xyz orthogonal coordinates are used. The axis that rotates the system is the y-axis, and the rotation angle is an angle formed by a diagonal line with the side on the x-axis of the one side surface. In the embodiment of FIG. 6, the substantially rectangular parallelepiped portion is a cubic portion that is a rectangular parallelepiped, and one side surface of the rectangular parallelepiped portion is on the zx plane, and the other side surface adjacent to the one side surface is another side. Assuming that the side surface is on the yz plane, the axes that rotate the xyz orthogonal coordinate system are the y-axis and the x-axis, and the rotation angles are angles formed by diagonal lines with the side on the x-axis of the one side surface, respectively. , An angle formed by a diagonal line with a side on the y-axis of the other side surface.

FIG. 7 shows that when the substantially rectangular parallelepiped portion is a rectangular parallelepiped portion, when one side surface of the rectangular parallelepiped portion is on the zx plane, the xyz orthogonal coordinate system is arranged around the y axis. It is the schematic diagram which looked at the three-dimensional modeling object modeled by the modeling method rotated only by the angle which the side on the x-axis of a side surface makes, and a diagonal. Referring to FIG. 7, it can be seen that the diagonal direction of the side surface of the substantially rectangular parallelepiped portion of the container is generally the direction in which the probability that the model body is observed is low. Therefore, according to the present embodiment, the direction perpendicular to the stacking direction of the modeling material layer of the three-dimensional structure is the diagonal direction of the side surface of the cubic part that is a rectangular parallelepiped of the container, so the model body is cleared. The observation range that can be seen in is widened.

In the determination of the stacking direction with respect to the bottom surface of the substantially rectangular column included in the container, the rotation angle of the xyz coordinate axis around which rotation axis is determined according to the main observation surface. It may be determined in consideration of which surface of the body is assumed. In this regard, as described above, when the observation direction is a direction perpendicular to the stacking direction, the model body appears blurred, so as the angle between the observation direction and the direction perpendicular to the stacking direction increases, Although the model body can be observed more clearly, this angle is preferably 20 ° or more, and more preferably 30 ° or more. In this case, the rotation angle is preferably 20 ° to 70 °, 110 ° to 160 °, 200 ° to 250 ° or 290 ° to 340 °, and 30 ° to 60 °, 120 ° to 150 °, 210 ° to 240 ° or 300 ° to 330 ° is more preferable.

In the said embodiment, although the example whose shape of a container is a cube was demonstrated, if a container has a part of a substantially straight pillar body, it shall have arbitrary appropriate shapes. . For example, the container can have a substantially rectangular parallelepiped or substantially cylindrical shape. In addition, the container has a shape in which a part of an arbitrary shape is added to all or a part of the upper part or the lower part of the substantially columnar part, or a part of the side surface of the substantially prismatic part. May be.

In the above embodiment, the container has a substantially columnar part, but even if the container has a shape other than that, the observation direction with high probability and the observation direction with low probability are known in advance. In the case of, etc., the direction in which the modeling material layer of the three-dimensional structure is stacked is in the observation direction with high probability or a direction in the vicinity thereof, or the direction orthogonal to the stacking direction of the modeling material layer in the three-dimensional structure is low in observation A direction or a direction in the vicinity thereof may be used.

In the above-described embodiment, as an example of a three-dimensional additive manufacturing method, an example using an inkjet method has been described, but other three-dimensional additive manufacturing methods such as an ink-jet binder method, an optical modeling method, a powder sintering method, a heat melting method, and the like. It goes without saying that the method may be used.

The present invention can be applied to a wide range of fields such as research tools, educational toys, and sales tools.

Although the present invention has been described above with reference to several embodiments for purposes of illustration, the present invention is not limited thereto and various forms and details may be used without departing from the scope of the present invention. It will be apparent to those skilled in the art that variations and modifications can be made.

DESCRIPTION OF SYMBOLS 1 3D modeling system 10 Modeling data generation apparatus 101 3D data reception part 103 Synthetic modeling data acquisition / generation part 105 Three-dimensional modeling object data generation part 109 Setting part 20 3D modeling apparatus 210 Slice data generation part 220 Control Unit 230 modeling stage 235 elevating drive unit 240 head unit 241 first printer head 243 second printer head 245

third printer head

247, 248

UV light source

50, 50 ′ three-dimensional modeled

object

501, 501 ′ model body 503, 503 'container

Claims

A three-dimensional structure in which modeling material layers are stacked,
A model body, containing the model body, including a container transparent to the model body,
The container has a substantially columnar part,
As for the stacking direction of the modeling material layer, the xyz orthogonal coordinate system is at least one of the x-axis, y-axis, and z-axis when the bottom surface of the substantially rectangular column portion is on the xy plane of the xyz orthogonal coordinate system. X'y'z 'coordinate system rotated by a predetermined angle around one axis (except when rotating only around the z-axis and when all rotation angles are multiples of 90 °) A three-dimensional structure that is parallel to the z′-axis direction.
The three-dimensional structure according to claim 1, wherein the predetermined angle is 20 ° to 70 °, 110 ° to 160 °, 200 ° to 250 °, or 290 ° to 340 °.
As for the stacking direction of the modeling material layer, the xyz orthogonal coordinate system when the bottom surface of the substantially columnar body is on the xy plane of the xyz orthogonal coordinate system is two of the x axis, the y axis, and the z axis. A direction parallel to the z′-axis direction of the x′y′z ′ coordinate system rotated about the axis by 20 ° to 70 °, 110 ° to 160 °, 200 ° to 250 °, or 290 ° to 340 °. The three-dimensional structure according to claim 2.
The substantially rectangular parallelepiped portion is a substantially rectangular parallelepiped portion,
When one side surface of the rectangular parallelepiped portion is on the zx plane, the axis that rotates the xyz orthogonal coordinate system is the y axis, and the predetermined angle is the side on the x axis of the one side surface. The three-dimensional structure according to any one of claims 1 to 3, wherein the three-dimensional structure is an angle formed by a diagonal line.
The substantially rectangular parallelepiped portion is a substantially rectangular parallelepiped portion,
When one side surface of the rectangular parallelepiped portion is on the yz plane, the axis that rotates the xyz orthogonal coordinate system is the x axis, and the predetermined angle is the side on the y axis of the one side surface. The three-dimensional structure according to any one of claims 1 to 4, wherein the three-dimensional structure is an angle formed by a diagonal line.
The substantially rectangular parallelepiped portion is a substantially rectangular parallelepiped portion,
Assuming that one side surface of the rectangular parallelepiped portion is on the yz plane, the axis that rotates the xyz orthogonal coordinate system is the z axis, and the predetermined angle is diagonal to the side on the y axis of the bottom surface. The three-dimensional structure according to any one of claims 1 to 5, wherein the three-dimensional structure is an angle formed.
The three-dimensional structure according to any one of claims 1 to 6, wherein the model body is a model body showing a numerical simulation result.
Generation of modeling data for modeling a model body and a three-dimensional structure including the model body and a container having a substantially straight column body by forming and stacking modeling material layers in order. A device,
Based on the synthetic modeling data acquisition / generation unit that acquires or generates synthetic modeling data obtained by synthesizing the model body and the container based on the modeling data of the model body, The stacking direction of the modeling material layer is such that when the bottom surface of the substantially rectangular column is on the xy plane of the xyz orthogonal coordinate system, the xyz orthogonal coordinate system is at least one of the x axis, the y axis, and the z axis. Z 'axis of the x'y'z' coordinate system rotated by a predetermined angle around (except when rotating only around the z axis and when all rotation angles are multiples of 90 °) A three-dimensional structure modeling data generation unit that generates modeling data of the three-dimensional structure so as to be parallel to the direction;
An apparatus for generating modeling data.
Generation of modeling data for modeling a model body and a three-dimensional structure including the model body and a container having a substantially straight column body by forming and stacking modeling material layers in order. A method,
The stacking direction of the modeling material layer is such that the xyz orthogonal coordinate system is at least one of the x-axis, y-axis, and z-axis when the bottom surface of the substantially rectangular column is on the xy plane of the xyz orthogonal coordinate system. Z 'in the x'y'z' coordinate system rotated by a predetermined angle around (except when rotating only around the z-axis and when all rotation angles are multiples of 90 °) Generating modeling data of the three-dimensional structure so as to be parallel to the axial direction;
Method for generating modeling data including
A program for causing a computer to execute the method for generating modeling data according to claim 9.
A computer-readable storage medium storing the program according to claim 10.
Modeling data for modeling a model body and a three-dimensional structure including the model body and including a container having a substantially straight column part by sequentially forming and stacking modeling material layers. And
The stacking direction of the modeling material layer is such that the xyz orthogonal coordinate system is at least one of the x axis, the y axis, and the z axis when the bottom surface of the substantially rectangular column is on the xy plane of the xyz orthogonal coordinate system. Z in the x'y'z 'coordinate system rotated by a predetermined angle around (except when rotating only around the z-axis and when all rotation angles are the same multiple of 90 °) 'A direction parallel to the axial direction,
Modeling data.
A computer-readable storage medium storing the modeling data according to claim 12.
Using the modeling data of claim 12, the three-dimensional modeled object including the model body, the model body, and a container having a portion of a substantially straight column body that is more transparent than the model body. A method of modeling by sequentially forming and stacking the modeling material layers.
The modeling data generating device according to claim 8;
A three-dimensional structure including a housing body that contains the model body, the model body, and a transparent body that is more transparent than the model body, based on the modeling data according to claim 12. , A three-dimensional modeling apparatus that models by forming and layering modeling material layers in order,
3D modeling system.