JP2003136605A - Method for forming product and its product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure the finishing accuracy and the dimensional accuracy of a surface to be worked necessary even when a complicated shape is incorporated. SOLUTION: The method for forming the product comprises the steps of adding strut shapes 22a, 22b to the core surface side and the cavity surface side of a three-dimensional product model M to three-dimensional product model data having the three-dimensional product model M, a frame 20 and a plurality of supports 21 for supporting the model M in the frame 20, performing a stereo lithography based on the three-dimensional product model data in which the shapes 22a, 22b are added, cutting the stereo lithographic product P according to NC data formed from the three-dimensional product model data, and then removing the shapes 22a, 22b and the supports 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a small amount of a product such as a mockup used as a prototype for confirming the design of a product or confirming the function of a product without using a mold, and a method for producing the same. Regarding the product.

[0002]

2. Description of the Related Art Stereolithography is performed by scanning a photocurable resin with ultraviolet laser light to cure it into a plate by a photocuring reaction, and laminating a plurality of the cured layers.
Dimensional product). In this stereolithography, a stereolithography object having a complicated shape can be molded.

[0003]

However, in stereolithography, since the stereolithography product has a resin laminated structure, the inclined portion and the curved surface portion of the three-dimensional product are formed by a plurality of fine steps. For this reason, when high finishing accuracy of the surface of a three-dimensional product is required, the surface is finished by polishing the surface with a file or the like.

The minute curved surface shape (minute R shape) of a three-dimensional product may be crushed by a step due to a laminated structure of resin.

Further, in the stereolithography, at the time of the stereolithography, the shrinkage of the resin due to the curing of the photocurable resin is taken into consideration, but the stereolithography is compared with the technique of molding a three-dimensional product using a die. It is difficult to control the shrinkage of the photocurable resin, and it is difficult to obtain high dimensional accuracy.

On the other hand, the cutting process can process the work piece at high speed and with high precision. However, the general 3
When a shaft cutting device is used, it is difficult to process the shape of a special portion having a complicated shape.

Therefore, the present invention has a complicated shape,
An object of the present invention is to provide a method for producing a small amount of product that can secure required finishing accuracy and dimensional accuracy of a processed surface and the product.

[0008]

The present invention relates to a stereolithography process for performing stereolithography based on three-dimensional product model data, and
A cutting process for cutting according to the NC data created from the three-dimensional product model data, and a three-dimensional product is created by performing a cutting process on the stereolithography object It is a method for producing a product, which is characterized by performing stereolithography on a cut object to produce a three-dimensional product.

According to the present invention, in the method for producing a product according to the present invention, the 3D product model data includes a 3D product model, a frame, and a plurality of supports for supporting the 3D product model in the frame. It is characterized by

According to the present invention, in the method for producing a product according to the present invention, the stereolithography process comprises a model of a three-dimensional product, a frame, and a plurality of supports for supporting the three-dimensional product model in the frame. A step of adding at least one support to one surface side of the three-dimensional product model with respect to the three-dimensional product model data, and curing the photocurable resin based on the three-dimensional product model data with the support added. And a stereolithography process.

According to the present invention, one of the three-dimensional product models is provided with respect to the three-dimensional product model data including a three-dimensional product model, a frame, and a plurality of supports for supporting the three-dimensional product model in the frame. Of at least one strut on the surface side of the surface, a step of curing the photo-curable resin based on the three-dimensional product model data to which the strut is added to perform stereolithography, and a stereolithography object produced by stereolithography. 3
And a step of performing a cutting process according to NC data created from the dimensional product model data.

The present invention cuts a workpiece according to NC data created from 3D product model data consisting of a 3D product model, a frame, and a plurality of supports for supporting the 3D product model in the frame. A step of processing, a step of curing the photocurable resin based on the 3D product model data obtained by adding shape data of the specific portion to the 3D product model, and stereolithography of the specific portion, and a step of removing the support. The method for producing a product is characterized by comprising:

According to the present invention, in the method for producing a product according to the present invention, the material of the workpiece to be cut in the cutting step is a resin equivalent to the photo-curable resin used by stereolithography,
It is characterized by being a resin that is compatible with the photocurable resin or a material that can be reused by stereolithography.

The present invention is characterized in that, in the above-described method for producing a product of the present invention, the product is a mockup used as a prototype for confirmation of the design of the product and confirmation of the function of the product.

According to the present invention, each of the workpieces formed by stereolithography for performing stereolithography based on the three-dimensional product model data of the product and cutting work according to NC data produced from the three-dimensional product model data is joined. It is a product characterized by

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION (1) A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a system applied to the product creating method of the present invention. This system is a three-dimensional CA
D device 1, three-dimensional CAM device 2, NC (numerical control)
A processing machine 4 having a control unit 3 (hereinafter, the NC control unit 3 and the processing machine 4 are collectively referred to as an NC processing machine 5) and an optical modeling apparatus 7 having an optical modeling control unit 6.

The three-dimensional CAD device 1 has a function of creating three-dimensional product model data of a product designed by a designer.

Further, the three-dimensional CAD apparatus 1 creates optical modeling data for operating the optical modeling apparatus 7 based on the three-dimensional product model data, and transfers this optical modeling data to the optical modeling apparatus 7. Have a function.

The three-dimensional CAM device 2 receives the three-dimensional product model data created by the three-dimensional CAD device 1 and creates NC data for operating the NC processing machine 5 based on this three-dimensional product model data. , Has a function of transferring this NC data to the NC processing machine 5.

The NC processing machine 5 has a function of operating according to the NC data transferred from the three-dimensional CAM device 2 and cutting the work 8 for example.

The stereolithography apparatus 7 causes the ultraviolet laser light 10 output from the laser device 9 to scan the photo-curable resin 12 contained in the stereolithography resin tank 11, and the stereolithography resin tank 1
The elevator 13 in 1 is moved up and down, and the photocurable resin 12
An optical model (three-dimensional product) P is created by laminating a plurality of layers that are cured into a plate shape by a photocuring reaction.

A galvanometer mirror 14 is provided on the optical path of the ultraviolet laser light 10 output from the laser device 9. The galvanometer mirror 14 shakes the ultraviolet laser light 10 output from the laser device 9 to photo-curable resin 12.
To irradiate.

The stereolithography control unit 6 has a function of controlling the operation timing of the laser device 9, the rotation angle of the galvanomirror 14, the elevation of the elevator 13, and the like in accordance with the stereolithography data transferred from the three-dimensional CAD device 1.

Next, a method of creating a mockup to be used as a prototype for checking the design of a product, for example, checking the design of the product or checking the function of the product using the system configured as described above will be described with reference to the mockup creating process chart shown in FIG. explain.

The designer operates the three-dimensional CAD device 1 to create, for example, a three-dimensional product model M of the lid used in the mobile phone shown in FIG. 3, and the three-dimensional product model data of this three-dimensional product model M is obtained. create. As for this three-dimensional product model data, a plurality of types of three-dimensional product models M may be created in advance and stored in the storage device of the three-dimensional CAD device 1.

First, a support shape adding step (step # 1)
In response to the designer's operation, the three-dimensional CAD device 1 reads the data of the three-dimensional product model M stored in the storage device, and the three-dimensional product model M includes a frame 20 and a plurality of frames as shown in FIG. A support shape consisting of the support 21 of FIG.

The frame 20 is formed as a quadrilateral frame having a size surrounding the shape of the three-dimensional product model M. A reference c is added to the frame 20 so that the frame 20 also serves as part or all of a jig for cutting by the NC processing machine 5.

The support 21 is 3 for the frame 20.
The dimensional product model M is supported, and the size thereof is, for example, 1 to 5 mm in width, 0.5 to 1 mm in thickness, and 5 to 10 m in length.
designed to m.

As a result, as shown in FIG. 4, three-dimensional product model data in which the frame 20 and the plurality of supports 21 are added to the three-dimensional product model M is created.

Next, the NC data B creating process (step #
In 2), 3 created by the three-dimensional CAD device 1
The three-dimensional product model data is sent to the three-dimensional CAM device 2.

The three-dimensional CAM device 2 receives the three-dimensional product model data, and the side of the three-dimensional product model that requires a low surface roughness, for example, the three-dimensional product model M.
NC data B used for cutting the side (hereinafter referred to as the core surface side) on the side opposite to the outer appearance side to which a mechanical shape such as a rib or a boss is added is created.

At this time, the NC data B is created based on the reference c attached to the plurality of supports 21 and the frame 20.

If a mold for creating the three-dimensional product model M is prepared, the mold is divided into two parts, a core surface side (convex side) and a cavity side (concave side). The three-dimensional CAM apparatus 2 does not create a mold, but creates NC data B corresponding to the core surface side of this mold.

Next, a pillar shape adding step (step # 3)
In 3, the three-dimensional CAD device 1 adds a plurality of pillar shapes 22a and 22b (see FIG. 6) to the three-dimensional product model M as shown in FIG.
These pillar shapes 22a and 22b have a support function for restricting the position of the three-dimensional product model M during stereolithography.

The pillar shape 22a is added to the core surface side, and the pillar shape 22b is added to the cavity surface side. Since the core surface side is shown in FIG. 5, the pillar shape 22b is hidden by the three-dimensional product model M.

The pillar shapes 22a and 22b are conical shapes having a bottom surface diameter of, for example, φ3. These prop shapes 22
The heights a and 22b are, for example, more than the distance from the surface of the three-dimensional product model M to the lower surface of the frame 20 of the supporting shape (frame 20 and support 21) created in the supporting shape adding step (step # 1). It is several meters long, and the bottom surface is at the same height as the lower surface of the supporting shape (frame 20 and support 21), and the apex bites into the three-dimensional product model M to the extent that it does not protrude.

The pillar shape 22a may be provided in at least one place, and besides the support of the above-mentioned three-dimensional product model M, the side having a high surface roughness, ie, 3 is required.
It functions as a strength reinforcement against the processing load when processing the appearance side (cavity surface side) of the three-dimensional product model M.

The pillar shape 22b may be provided in at least one place, and in addition to the support of the above-described three-dimensional product model M, strength reinforcement against a processing load when processing the core surface side opposite to the cavity side. Function as.

Next, the NC data A creating process (step #
In 4), the three-dimensional product model data to which the pillar shapes 22a and 22b created by the three-dimensional CAD device 1 are added is sent to the three-dimensional CAM device 2.

This three-dimensional CAM device 2 has a pillar shape 22.
The 3D product model data to which a and 22b are added is received, and NC data A used for cutting the cavity in this 3D product model is created. At this time, NC data A includes a plurality of supports 21 and frames 20.
It is created on the basis of the reference c attached to.

Next, in the stereolithography data creating step (step # 5), the supporting shape (frame 20 and support 21) and the pillar shape 22 are made by the three-dimensional CAD apparatus 1.
Based on the three-dimensional product model data to which a and 22b are added, stereolithography data for operating the stereolithography device 7 is created, and this stereolithography data is transferred to the stereolithography control unit 6.

At this time, the shrinkage factor of the photocurable resin 12 is added to a larger value in consideration of the shrinkage of the photocurable resin 12 at the time of curing, and in consideration of finishing by cutting in a later step.

Next, in the stereolithography process (step # 6), the stereolithography control unit 6 receives the stereolithography data transferred from the three-dimensional CAD device 1, and the operation of the laser device 9 according to the stereolithography data. Timing, galvanometer mirror 14
Control the rotation angle of the, the elevator 13 up and down.

As a result, the stereolithography apparatus 7 causes the ultraviolet laser light 10 output from the laser apparatus 9 as shown in FIG.
When the galvano mirror 14 swings, the stereolithography resin tank 11
Scan on the photo-curable resin 12 inside, and the stereolithography resin tank 1
The elevator 13 in 1 is descended, and a plurality of layers cured in a plate shape by a photocuring reaction in the photocurable resin 12 are laminated to form a stereolithographic object P.

This stereolithography product P comprises a three-dimensional product model M, a frame 20, a plurality of supports 21, and a plurality of pillar shapes 2.
2a and 22b. Further, in the three-dimensional product model M, ribs 23 and bosses 24 are formed on the core surface side.

In FIG. 6, the ultraviolet laser beam 10 is scanned on the photo-curable resin 12 to form the portion Pa of the stereolithographic object P.

Next, in the cutting process A step (step # 7), the stereolithographic object P is taken out from the stereolithographic resin tank 11 and installed in the NC processing machine 5. At this time, the stereolithography object P
Is the support shape (frame 2) added in step # 1 above.
0 and the support 21) are aligned and installed with the reference c.

As shown in FIG. 7, the NC processing machine 5 cuts the cavity surface side of the stereolithographic object P with the tool 5a according to the NC data A created in step # 4,
The cubity side of the stereolithography object P is finished.

At the time of this cutting, the stereolithographic object P is supported with the processing load at the time of cutting being reinforced by the strength of each pillar shape 22a.

Next, the pillar shape removing step (step # 8)
In, the pillar shape 22 on the core surface side of the stereolithography object 22
a is removed by a cutter or the like.

Next, in the cutting process B step (step # 9), the stereolithographic object P is inverted and set in the NC processing machine 5. At this time, the stereolithographic object P is positioned and installed by the reference c of the supporting shape (frame 20 and support 21) added in step # 1.

As shown in FIG. 8, the NC processing machine 5 cuts the core surface side of the stereolithography object P with the tool 5a in accordance with the NC data B created in the step # 2, and the core of the stereolithography object P is cut. Finish the sides.

This cutting process B step (step #
After 9), the pillar shape 22b on the cubity surface side of the stereolithography object P is removed by a cutter or the like.

Next, the supporting shape removing step (step # 1)
In 0), the supporting shape of the frame 20 and the support 21 in the stereolithography object P is removed by a cutter or the like.

As a result, the mockup Ma of the three-dimensional product of the lid used for the mobile phone shown in FIG. 3 as shown in FIG. 9 is created.

As described above, in the first embodiment,
The core surface side and the cavity surface side of the three-dimensional product model M with respect to the three-dimensional product model data including the three-dimensional product model M, the frame 20, and the plurality of supports 21 supporting the three-dimensional product model M in the frame 20. Column shape 22a,
22b is added, stereolithography is performed based on the three-dimensional product model data to which the pillar shapes 22a and 22b are added, and the stereolithography P is cut according to NC data created from the three-dimensional product model data. After that, the post shapes 22a and 22b and the support 21 are removed, so that a stereolithography object having a complicated shape can be molded by stereolithography, and high-speed and high-precision machining can be performed by the cutting process. Even with the above, it is possible to create the mockup Ma having the required finishing accuracy and dimensional accuracy of the processed surface.

Therefore, a small amount of products such as mockups can be produced without using a die, which is more cost effective than the case of producing a small amount of products using a die.

Also, when finishing the cavity side surface and the core side surface of the stereolithography object P, the cubity side surface and the core side surface are supported by the pillar shapes 22a and 22b, so that the strength is reinforced against the processing load at the time of cutting. Will be done.

Since the vertices of the cones of the pillar shapes 22a and 22b are connected to the three-dimensional product model M, they can be easily removed by a cutter or the like after the completion of cutting without affecting the three-dimensional product model M. it can.

Similar to the pillar shapes 22a and 22b of the support 21, a three-dimensional product model M can be easily and easily produced by a cutter or the like.
Can be removed without affecting the

(2) Next, a second embodiment of the present invention will be described with reference to the drawings.

Since the system configuration is the same as the system shown in FIG. 1 used in the first embodiment, the system shown in FIG. 1 will be described.

Also in the second embodiment, a method of creating a mockup used as a prototype for checking the design of the product and checking the function of the product will be described with reference to the mockup creating process chart shown in FIG.

The material of the work (work) to be cut is a material equivalent to the photocurable resin used for stereolithography, or a resin having a bonding property with the photocurable resin used for stereolithography. It is a material that can be reused in the stereolithography process.

That is, the material of the workpiece to be cut is overlapped with a part of the workpiece at the time of stereolithography, and the photocurable resin is scanned with the ultraviolet laser light to form a new stereolithography shape. Alternatively, the photo-curable resin is scanned with ultraviolet laser light so as to come into contact with a part of the workpiece to create a new stereolithography shape, so that the workpiece and the new stereolithography shape are joined together. Is.

The designer operates the three-dimensional CAD device 1 to create, for example, a three-dimensional product model M of the lid used in the mobile phone shown in FIG.
Create dimensional product model data. As for this three-dimensional product model data, a plurality of types of three-dimensional product models M may be created in advance and stored in the storage device of the three-dimensional CAD device 1.

First, a support shape adding step (step # 1)
In 1), the three-dimensional CAD device 1 receives the data of the three-dimensional product model M stored in the storage device in response to the designer's operation, and loads the data of the three-dimensional product model M into a frame as shown in FIG. A support shape consisting of 20 and a plurality of supports 21 is added.

The frame 20 is formed in a quadrilateral frame having a size surrounding the shape of the three-dimensional product model M. A reference c is added to the frame 20 so that the frame 20 also serves as part or all of a jig for cutting by the NC processing machine 5.

The support 21 is 3 for the frame 20.
The dimensional product model M is supported, and the size thereof is, for example, 1 to 5 mm in width, 0.5 to 1 mm in thickness, and 5 to 10 m in length.
designed to m.

Next, in the stereolithography data creation process (step # 12), the three-dimensional CAD device 1 is operated to perform 3
For stereolithography of only the undercut shape 25 formed on the core surface side of the three-dimensional product model M as shown in FIG. Create the data.

At this time, the data for stereolithography is created based on the standard c of the frame 20 added in step # 11, and the positional information of the three-dimensional product model M is added to the data for stereolithography.

Next, the NC data C creating process (step #
In 13), the three-dimensional product model data created by the three-dimensional CAD device 1 is sent to the three-dimensional CAM device 2.

The three-dimensional CAM device 2 receives the three-dimensional product model data, and adds the support shape from the shape of the workpiece having the same size as the outer periphery of the frame 20 of the support shape (frame 20 and support 21). NC data C used to process the cavity surface side of the three-dimensional product model M thus created is created. At this time, it is created based on the reference c of the frame 20.

Next, the NC data D creating process (step #
In 14), the three-dimensional CAM device 2 processes the shape of the cavity surface side of the three-dimensional product model M to which the support shape (frame 20 and support 21) is added from the shape of the workpiece, and then the core surface side. NC used to process shapes except complicated specific parts such as undercut shape 25
Data D is used for supporting shape (frame 20 and support 2
It is created based on the 3D product model M added in 1). At this time, it is created based on the reference c of the frame 20.

Next, the cutting process C step (step # 15)
In, the workpiece 26 shown in FIG. 12 is installed in the NC processing machine 5. At this time, the workpiece 26 has the support shape (frame 20 and support 2) added in step # 1.
It is installed by aligning with the reference c of 1). The workpiece 26 is formed to have the same size as the outer circumference of the frame 20.

This NC processing machine 5 uses the above step # 13.
The cavity surface side of the three-dimensional product model M to which the supporting shape (frame 20 and support 21) has been added is cut by the tool 5a according to the NC data C created in (3).

Next, the cutting process D step (step # 16)
In FIG. 13, the workpiece 26a whose cavity surface side has been cut is installed in the NC processing machine 5 with its core surface side and cavity surface side being reversed. At this time, the workpiece 26a is positioned and installed by the reference c of the supporting shape (frame 20 and support 21) added in step # 1.

This NC processing machine 5 uses the above step # 14.
The core surface side of the three-dimensional product model M to which the support shape (frame 20 and support 21) is added is cut with the tool 5a to cut the work piece 26a according to the NC data D created in (3).

The machined product 26c created by this machining is composed of the three-dimensional product model M, the frame 20 and a plurality of supports 21, and the complicated specific parts such as the undercut shape 25 are removed.

Next, in the stereolithography process (step # 17), as shown in FIG.
The operation timing of the laser device 9, the swing angle of the galvanometer mirror 14, the elevation of the elevator 13 and the like are controlled according to the data for stereolithography created in 12, and a complicated specific portion such as the undercut shape 25 is stereolithographically shaped.

That is, the cut work 26c is placed on the elevator 13 in the stereolithography resin tank 11. The positioning of the cut work 26c with respect to the stereolithography apparatus 7 is performed by the reference c provided on the frame 20 of the cut work 26c.

The portion of the cutting work 26c where the undercut shape 25 is to be stereolithographically formed is aligned with the water surface of the photocurable resin 12 by the lifting operation of the elevator 13.

When the ultraviolet laser light 10 is output from the laser device 9, the ultraviolet laser light 10 scans the undercut shape 25 on the water surface of the photocurable resin 12 onto the portion to be photoformed by the rotation of the galvanometer mirror 14. To be done.

Then, the elevator 13 is lowered, and a plurality of layers which are cured into a plate shape by a photocuring reaction in the photocurable resin 12 are laminated to form a complicated specific portion such as the undercut shape 25 by photolithography.

Next, the supporting shape removing step (step # 1)
In 8), the support shape (frame 20 and support 21) is removed from the cutting work 26c in which a complicated specific portion such as the undercut shape 25 has been stereolithographically formed, using a cutter or the like.

As a result, the mockup Ma of the three-dimensional product of the lid used in the mobile phone shown in FIG. 3 is created.

As described above, in the second embodiment,
3D product model M, frame 20 and this frame 20
A plurality of supports 21 for supporting the three-dimensional product model M inside
NC created from 3D product model data consisting of
The workpiece 26 is cut according to the data, and the undercut shape 25 is generated by converting the 3D product model M into shape data based on the 3D product model data in which the shape data of the complicated shape part such as the undercut shape 25 is added. Since a complicated specific portion such as a laser beam is formed by stereolithography and the support 21 is removed after that, a complicated specific portion such as an undercut shape 25 that can be processed at high speed with high accuracy and cannot be processed by the cutting processing. It can be molded by joining to the three-dimensional product model M by stereolithography.

Therefore, even if it has a complicated shape, the required finishing accuracy and dimensional accuracy of the processed surface can be secured.

The present invention is not limited to the above-described first and second embodiments, and can be variously modified at the stage of implementation without departing from the spirit of the invention.

Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the problem described in the section of the problem to be solved by the invention can be solved, and it is described in the section of the effect of the invention. When the effect of being obtained is obtained, a configuration in which this constituent element is deleted can be extracted as an invention.

The present invention combines a stereolithography process for performing stereolithography based on the three-dimensional product model data with a cutting process for performing cutting according to the NC data created from the three-dimensional product model data. It can be applied when making a small amount of products without using a mold.

For example, FIG. 15 shows a case where a stereolithography object 31 is joined to a cutting workpiece 30 by stereolithography. In this case, a stereolithography object 31 having a shape that cannot be machined by cutting is formed inside the concave-shaped machining object 30.

Further, in the first and second embodiments,
The case of creating a product by combining the cutting process and the stereolithography process has been described, but not limited to these processing methods, other processing methods such as a powder bonding method, a particle deposition method, a resin extrusion method, a sheet deposition method, A vapor phase growth method, a boring process, a micro electrolytic process, an electric discharge process, a laser process, an ultrasonic process and the like may be used.

[0095]

As described above in detail, according to the present invention, there is provided a method of producing a product and a product thereof which can secure required finishing accuracy and dimensional accuracy of a machined surface even if they have a complicated shape. Can be provided.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a system applied to a first embodiment of a product creating method according to the present invention.

FIG. 2 is a mockup creation process chart in the first embodiment of the product creation method according to the present invention.

FIG. 3 is a diagram showing a mockup model created in the first embodiment of the product creating method according to the present invention.

FIG. 4 is a diagram showing a support shape added to the mockup model created in the first embodiment of the product creating method according to the present invention.

FIG. 5 is a diagram showing a pillar shape in the first embodiment of the method for producing a product according to the present invention.

FIG. 6 is a diagram showing stereolithography by the stereolithography apparatus in the first embodiment of the method for producing the product according to the present invention.

FIG. 7 is a diagram showing cutting processing on the cubity surface side of the stereolithography object in the first embodiment of the method for producing a product according to the present invention.

FIG. 8 is a diagram showing a cutting process on the core surface side of the stereolithography object in the first embodiment of the method for producing a product according to the present invention.

FIG. 9 is a diagram showing a mockup created by the first embodiment of the product creating method according to the present invention.

FIG. 10 is a mockup creation process diagram in the second embodiment of the product creation method according to the present invention.

FIG. 11 is a diagram showing an undercut shape in the second embodiment of the method for producing a product according to the present invention.

FIG. 12 is a view showing a cutting process on the cavity surface side in the second embodiment of the method for producing a product according to the present invention.

FIG. 13 is a view showing a cutting process on the core surface side in the second embodiment of the method for producing the product according to the present invention.

FIG. 14 is a view showing stereolithography in which a complicated shape portion such as an undercut shape in the second embodiment of the method for producing a product according to the present invention.

FIG. 15 is a diagram showing a modified example in which a stereolithography object is joined to a cutting product by stereolithography using the method for producing a product according to the present invention.

[Explanation of symbols]

1: Three-dimensional CAD device 2: Three-dimensional CAM device 3: NC control unit 4: Processing machine 5: NC processing machine 6: Stereolithography control unit 7: Stereolithography device 8: Workpiece 8a: Cut product 9: Laser device 11: Stereolithography resin tank 12: Photocurable resin 13: Elevator 14: Galvo mirror 20: Frame 21: Support 22a, 22b: post shape 23: Rib 24: Boss 25: Undercut shape 26: Workpiece M: 3D product model Ma: Mockup

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Claims (8)

[Claims] 1. A stereolithography process for performing stereolithography based on three-dimensional product model data, and a cutting process for performing cutting according to NC data created from the three-dimensional product model data. The three-dimensional product is created by performing the cutting process on the formed optical product, or the three-dimensional product is created by performing the optical modeling on the cut product created by the cutting process. How to create a product to do. 2. The three-dimensional product model data is the three-dimensional product model data.
The method of claim 1, comprising a three-dimensional product model, a frame, and a plurality of supports for supporting the three-dimensional product model within the frame. 3. The three-dimensional product model data comprising a model of the three-dimensional product, a frame, and a plurality of supports for supporting the three-dimensional product model in the frame in the stereolithography process, A step of adding at least one support to one surface side of the three-dimensional product model, and a step of curing a photo-curable resin based on the three-dimensional product model data to which the support is added to perform stereolithography The method for producing a product according to claim 1, further comprising: 4. The 3D product model data comprising a 3D product model, a frame, and a plurality of supports for supporting the 3D product model in the frame. A step of adding at least one support to one surface side; a step of curing a photocurable resin based on the three-dimensional product model data to which the support is added to perform stereolithography; and the stereolithography A method of producing a product, which comprises a step of cutting a modeled object according to NC data created from the three-dimensional product model data. 5. A workpiece is cut according to NC data created from the 3D product model data, which comprises a 3D product model, a frame, and a plurality of supports for supporting the 3D product model in the frame. A step of processing, a step of curing a photocurable resin based on 3D product model data obtained by adding shape data of a specific portion to the 3D product model, and stereolithography the specific portion; A method for producing a product, which comprises a step of removing. 6. The material of the workpiece to be cut in the cutting step is a resin equivalent to the photocurable resin used in the stereolithography, a resin compatible with the photocurable resin,
Alternatively, it is a material that can be reused by the stereolithography, and the method for producing a product according to claim 1, 4, or 5. 7. The product according to claim 1, wherein the product is a mockup used as a prototype for confirming the design of the product and confirming the function of the product. How to create a product. 8. A workpiece produced by stereolithography based on three-dimensional product model data of a product and cutting work performed according to NC data created from the three-dimensional product model data are joined together. A product characterized by being made.