JPH11156674A - Manufacture of container having irregular pattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a series of products having identical irregular data stuck on a deformed container by evaluating designs based on a specified standard and generating irregular pattern data having height information. SOLUTION: Design data for forming an irregular pattern on a pan is formed. The design is stuck to the desired position of a model (pan) made beforehand by a CAD. The design data is converted into irregular pattern data having height information, and model data for a CAM is formed based on composite data between the shape data of a container and the irregular pattern data. Data for machining is prepared based on the model data for the CAM. Machining based on the machining data is executed, and a product (container having an irregular pattern) is manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method for manufacturing a container having a concavo-convex pattern or a mold thereof with a machine tool, and a recording medium storing a program for realizing the manufacturing method by a computer. It relates to processing from design to manufacturing by repeating trial and error simply and efficiently.

[0002]

2. Description of the Related Art Conventionally, in order to produce a prototype / product in which a sketch picture designed by a designer is attached to a solid shape of a container or to manufacture a mold thereof, a craftsman has to manually build or engrave. It was done by. With such a manufacturing method, it was difficult to create a design that met the initial intentions of the design. In addition, even if the designer used a computer to design the image data, there was no way to directly convert the image data into a concavo-convex pattern and paste it, so the data generated by the computer was converted into an image once printed on paper. Was handed over and processed based on this.

[0003]

Since the container with the uneven pattern is manufactured by the above-described steps, the final product shape often differs from the one intended by the designer, and frequent reworking is required. And the efficiency was significantly reduced.

The present invention has been made to solve such a problem, and it is intended to maintain the consistency of the design intention which cannot be avoided by the conventional manual operation, and to prevent the occurrence of a trial and error. A method for manufacturing a container with a concavo-convex pattern, which enables reduction in the number of containers, and also makes it possible to easily create a series product in which the same concavo-convex data is attached to a container having a different shape, and a program for realizing the manufacturing method by a computer. It is an object of the present invention to provide a recorded recording medium.

[0005]

(1) In a method of manufacturing a container with a concavo-convex pattern according to one aspect of the present invention, a design given as graphic information is attached to a three-dimensional shape of a container to be attached. Evaluate the design based on predetermined criteria and generate uneven pattern data with height information,
CAM based on three-dimensional shape data and uneven pattern data of container
Model data is generated, processing data is generated from the CAM model data, and processing is performed based on the processing data to manufacture a container with an uneven pattern. (2) In the method of manufacturing a container with a concavo-convex pattern according to another aspect of the present invention, in the manufacturing method of (1), the CAM model data is mold data corresponding to the container.
A mold is created based on the processing data, and a container with an uneven pattern is manufactured based on the mold. (3) In the method for manufacturing a container with a concavo-convex pattern according to another aspect of the present invention, in the manufacturing method according to the above (1), the design is attached to a container having a rotating body shape along a circumferential direction of the rotating body shape. Thus, the machining path of the mold is generated along the circumferential direction of the rotating body. (4) In the method for manufacturing a container with a concavo-convex pattern according to another aspect of the present invention, in the above-described manufacturing methods (1) to (3), the processing data is cutting data.

In the present invention, for example, CG / CAD /
In the integrated CAM system, a design for generating a concavo-convex pattern by CG is performed, a design shape for attaching the design in CAD is designed, and the integrated design is evaluated and confirmed on the CG.
Then, the processing data of the prototype / product or the processing data of those dies is generated. The evaluation of the design (concavo-convex pattern) is performed by calculating luminance information when the image is pasted on the attachment surface, and reflecting the adhesion on the attachment surface as the height information of the design to display a CG screen. . Designers make decisions using this. A gouge-free machining path is generated by associating the height information of the design with the surface of the three-dimensional free shape to be pasted.

[0007] By using these series of methods, the system can be processed using the same concavo-convex pattern data through, for example, CG / CAD / CAM, there is no variation, and the initial design intention is faithfully reproduced. This makes it possible to maintain the consistency of the design intent and reduce the occurrence of trial and error, thereby reducing costs. Since the shape to be pasted is a three-dimensional free-form surface, the same pattern can be pasted to various types of objects, and it is also possible to easily create series products in which the same irregularity data is pasted to containers of different shapes. Has become.

When a container is manufactured by using the above-described process, an arbitrary pattern can be easily formed on a container such as a plate, a tea cup, a cup, a pot, a basin, and a gasoline tank of a motorcycle. In addition, since the upstream designer's intention is transmitted through the system consistently, a product shape or shape that is extremely faithful to the initial designer's intention is obtained.

(5) A recording medium according to another aspect of the present invention stores a program for causing a computer to perform the arithmetic processing of the method for producing a container with a concavo-convex pattern described in (1) to (4). And a readable recording medium. The program stored in the recording medium includes, in addition to the above, a control program for performing each process in the embodiment described later.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a flowchart showing a process of a manufacturing method according to an embodiment of the present invention. Here, the manufacture of a ceramic dish will be described as an example. (1) A basic shape design is created (S1), and a basic shape model is created by CAD (S1).
2). For example, the container shape (dish) as shown in FIG.
Model on AD. (2) Design data (for example, FIG. 3) for forming an uneven pattern on a plate is generated (S3). If there is an appropriate one among those already created, the design data is read (S4). Then, the design data is edited as needed (S5). For example, as shown in FIG. 4, various image processes such as a blur process are performed. This design data is image data.

(3) Such a design (data)
Is attached to a desired position of a shape model (dish) created in advance by CAD (S6). When the shape is a rotating body like a dish, the same pattern is repeatedly attached in the circumferential direction. As a result, the same pattern is attached to one surface. (4) At this time, adjust the position of the design,
Further, an editing process such as adjusting the degree of the unevenness is performed as needed (S7). When performing this processing, C
Using the function of G (rendering, etc.), the state is evaluated using a CG image as shown in FIG.
8). When the design is displayed by the CG image, for example, the luminance information of the design data is reflected as the height information of the design on the attaching surface, so that the design is displayed as a pattern with irregularities (height). (5) The operator evaluates what is displayed by the CG image (see FIG. 5), and if the content is not satisfactory, repeats the above processing (S1 to S8) as necessary.

(6) When the shape data and the design data of the container edited and determined while being evaluated in this way are determined, the design data is converted into the concavo-convex pattern data having height information, and the shape data of the container is Generating CAM model data from composite data with the uneven pattern data (S
9). The details of this process will be described later. (7) By the way, when creating the mold data, the male / female inversion process of the shape is performed (S10), and the mold design is performed based on the data obtained by the inversion process (S1).
1). For example, an upper die and a lower die are generated as shown in FIG. Then, CAM model data is generated from the composite data of the shape data and the concavo-convex pattern data obtained by the mold design in the same manner as described above (S
9).

(8) CAM generated as described above
From the model data for processing (S1)
0). In this way, there is no CAD shape data,
Processing path data for creating a shape having an uneven pattern is automatically generated. In the present embodiment, for example, a processing path corresponding to an uneven pattern as shown in FIG. 7 is generated. (9) The above processing data is installed in the NC device, and processing is performed based on the processing data (S1).
1) Manufacture a product (container with uneven pattern) (S1)
2). In the case where a mold (FIG. 6) corresponding to the container having the uneven pattern is manufactured, the container having the uneven pattern is manufactured using the mold.

Next, of the above processes, a process of generating CAM model data from the shape data and the design data (S9) and a process of generating processing data from the CAM model data (S10). Details will be described.

FIG. 8 is a flowchart showing details of the processing (S9, S10), and the description will be made with reference to this flowchart. (1) The positional relationship between a three-dimensional base curved surface group (corresponding to “container” in the present embodiment) and two-dimensional image data (corresponding to “design data” in the present embodiment) is determined (S21). ). FIG. 9 is an explanatory diagram showing a base curved surface group at this time. The base surface group 30 is composed of a plurality of base surfaces 31 as shown in FIG. 9, and the base surface group 31 is defined by CAD.
Defined by AD.

(2) Discretization of the base curved surface group 30 is performed (S22). FIG. 10 is an explanatory diagram showing the state of this processing. A lattice 51 is created by approximating each base curved surface 31 with a minute plane 50 so as to satisfy a specified tolerance.

(3) The amount of vertex offset is calculated (S
23). The offset amount of the vertex 52 of the minute plane 50 generated in step 22 (discretization of the base curved surface group) is obtained by evaluating the two-dimensional image data. Specifically, it is calculated whether or not each vertex 52 of the minute plane 50 generated in step 22 exists in the image data determined in step 21 (arrangement of the two-dimensional image data). Calculates the value of the two-dimensional image data at the vertex position. The value of the two-dimensional image data is, for example, the grayscale value in the case of grayscale data.

FIG. 11 is an explanatory view of a method of offsetting a shape by designating a maximum height and a minimum height. In the case of grayscale data, the value is from 0 to 255, but as shown in FIG. 11A, when the maximum height is designated as “255” and the minimum height is designated as “0”, 2 The value of the dimensional image data ranges from “0 to 255”. The offset amount is obtained by multiplying the value of the two-dimensional image data by a coefficient for converting the value into actual height data. In addition, as shown in FIGS. 11B and 11C, when the minimum height is specified as a negative value, it is possible to dig down from the base curved surface.

(4) Obtain the vertex offset amount (S2)
4). In this step, the vertex 5 of the minute plane 50 is
2 is offset by the offset amount calculated in step 23 (calculation of the vertex offset amount). Specifically, as shown in FIG. 12, the vertex existing in the image data is set in the normal direction 70 of the base curved surface 31 at the position of the vertex 52 by the vertex offset corresponding to the value of the two-dimensional image data. The offset is performed by an amount 71 to obtain an offset vertex 72. As a result, 2
A three-dimensional shape 73 represented by the dimensional image data is generated.

(5) An offset amount corresponding to the tool shape is obtained (S25). In this step, step 4
All the vertices 72 subjected to the offset processing by (vertex offset) are subjected to the offset processing according to the shape of the processing tool to be used. For example, in the case of a ball end mill 80 as shown in FIG.
Becomes The direction of this offset is the normal direction 70 of the base curved surface 31, as shown in FIG. In this manner, the offset vertex 90 is obtained by further offsetting in the normal direction 70 of the base curved surface 31 by the offset amount 81. By obtaining the vertices 90 in this way, the three-dimensional shape 91 after the offset processing is generated.

(6) The tool path pattern is projected and the intersection is calculated (S26). In this step, a tool path pattern line group indicating a two-dimensional movement path of the machining tool is projected on a grid line segment group (the three-dimensional shape 91 after the offset processing) formed by connecting the offset vertices 90. 1
As shown in FIG. 5, a group of intersections 100 between the grid line segments and the tool path pattern is obtained.

(7) Create tool path data (S2)
7). In this step, a group of intersections 100 obtained in step 26 (projection of a tool path pattern and calculation of an intersection) are connected on the basis of a tool path pattern to form a machining tool movement path 1.
By generating 01, data (cutting data) of the machining tool movement path can be obtained (see FIG. 7).

In the present embodiment, an example has been described in which two-dimensional image data (design data) is evaluated based on the shading of the image data. However, other standards such as color may be used.

In the present embodiment, an example has been described in which a container is manufactured by performing a cutting process using an NC device. However, in the present invention, if model data for a CAM is generated as described above, Based on the data, ST
Processing data in any processing method such as imparting processing (laminated processing) and electric discharge processing according to the L format can be generated in the same manner.

In this embodiment, an example in which the container is provided with an uneven pattern has been described.
Naturally, a shape similar to a container such as a desk lamp is also an object.

A program for causing a computer to execute the processes in FIGS. 1 and 8 is stored in a recording medium such as a ROM, and is installed and used in an auxiliary storage device of the computer as needed.

[0027]

As described above, according to the present invention, a design given as graphic information is pasted on a three-dimensional shape of a container to be pasted, and the design data is evaluated based on a predetermined criterion. To produce the container 3
A CAM model data is generated from the three-dimensional shape data and the concavo-convex pattern data, processing data is generated from the CAM model data, and processing is performed based on the processing data to provide a container with a concavo-convex pattern. As a result, a high-quality prototype / product or its mold can be obtained very efficiently and easily. Further, the same pattern can be easily diverted to containers having different shapes, and a series product can be easily manufactured. Also,
Even in the case where the same pattern is repeated, the pasting can be easily realized. When the container shape (excluding the handle etc.) is a rotating body, if the image pattern repeatedly appears in the circumferential direction, it is possible to generate the entire pattern just by having one basic pattern Become.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a process of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a dish shape model.

FIG. 3 is an explanatory diagram of a design for generating a concavo-convex pattern.

FIG. 4 is an explanatory diagram of a design obtained by performing a blurring process on the design of FIG. 4;

FIG. 5 is an explanatory diagram of evaluation using a CG image.

FIG. 6 is an explanatory diagram of a shape model of a combined die of an upper die and a lower die of a plate.

FIG. 7 is an explanatory diagram of a processing path for a concavo-convex pattern having height data.

FIG. 8 is a flowchart showing details of the processing (S9, S10) in FIG. 1;

FIG. 9 is an explanatory diagram of a base curved surface group used in the present embodiment.

FIG. 10 is an explanatory diagram of a lattice created by approximating the base curved surface of FIG. 9 with a minute surface.

FIG. 11 is an explanatory diagram showing a method of offsetting a shape by designating a maximum height and a minimum height.

FIG. 12 is an explanatory diagram of a vertex offset direction based on two-dimensional image data.

FIG. 13 is an explanatory diagram of an offset amount (in the case of a ball end mill) depending on the shape of a processing tool.

FIG. 14 is an explanatory diagram of an offset direction of a vertex depending on a shape of a processing tool.

FIG. 15 is an explanatory diagram of a method of creating a machining tool movement path.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kiyoshi Aoki 580 Horikawacho, Saiwai-ku, Kawasaki-shi, Kanagawa Pref. (72) Inventor Yu Hirano 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd.

Claims (5)

[Claims] 1. A design provided as graphic information is attached to a three-dimensional shape of a container to be attached, and the design is evaluated based on a predetermined criterion to generate uneven pattern data having height information. Model data for the CAM is generated from the three-dimensional shape data of the container and the pattern data, and processing data is generated from the model data for the CAM, and processing is performed based on the processing data. A method for producing a container with a concavo-convex pattern, characterized by producing a container with the pattern. 2. The method according to claim 1, wherein the CAM model data is mold data corresponding to the container. 3. The method according to claim 1, wherein the design is attached to a container having a shape of a rotating body along a circumferential direction of the shape of the rotating body, and a processing path of the mold is generated along a circumferential direction of the shape of the rotating body. The method for producing a container with a concavo-convex pattern according to claim 2, characterized in that: 4. The method according to claim 1, wherein the processing data is data for cutting. 5. A readable recording medium in which a program for causing a computer to perform an arithmetic process of the method for manufacturing a container with a concavo-convex pattern according to claim 1 is recorded.