JP3286779B2 - How to register part data for 3D CAD system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component data registration method for a three-dimensional CAD system for registering a component model as solid-based component data.

[0002]

2. Description of the Related Art Generally, injection molding dies, die-casting dies, press dies and the like are constituted by a plurality of mold plates and a plurality of bolts and pins and the like to be assembled to the mold plates. ing.

Conventionally, three-dimensional CAD (Computer)
In the case of modeling a product model such as a mold by an aided design (computer-aided design) system, the modeling of a standardized part such as a bolt which is a JIS standard part and a pin which is an in-house standard part is performed by a system. The corresponding component data is read from a database registered in advance in the system, and modeling is performed using this component data.

[0004] In this case, in the database, component data relating to all standardized components such as JIS standard components and in-house standard components are registered in a list form, and when using, target component data is selected from a menu. .

[0005]

However, the conventional component data registration method has the following problems.

First, since component data relating to all standardized components is registered, especially in the case of solid-based component data, an enormous memory capacity for a database is required and cost is reduced. At a significant disadvantage.

Second, a component having a standardized portion such as a head and a thickness and a portion individually set such as a length, such as an ejector pin for projecting a molded product, which is an in-house standard component. Is not familiar with a database, so the types of parts that can be constructed as a database are limited, and modeling efficiency cannot be improved.

The present invention has solved the problems existing in the prior art, and has greatly reduced the memory capacity of the database to increase the cost advantage and promoted the conversion of parts into a database. It is intended to provide a method for registering part data of a three-dimensional CAD system that can dramatically improve modeling efficiency.

[0009]

A part data registration method for a three-dimensional CAD system according to the present invention registers part models Pa... Relating to bolts or pins as solid base part data Xa. At this time, standard data Xas... Relating to standardized parts of the part models Pa... Are registered in a text file F in advance, and when modeling any arbitrary part model Pa, the standard data Xas corresponding to the part model Pa. F, and by adding additional data Xat to the read standard data Xas, component data Xa relating to the component model Pa is created, and the created component data Xa is converted to solid-based component data Xas.
It is characterized in that it is registered in the data table T as the database M as a.

Thus, the data registered in the text file F is only the standard data relating to the standardized parts of the component models Pa..., And the data amount is greatly reduced. On the other hand, when registering component data relating to an arbitrary component model Pa, the corresponding standard data Xas is read from the text file F, and the read standard data Xa is read.
By adding additional data Xat to s,
The component data Xa related to the component model Pa is created, that is, the component data Xa is completed, and the obtained component data Xa is used as a database M as a data table T
, The database M is a set of parts data Xa... Necessary for the user.
Memory capacity is also greatly reduced. Also, additional data X
In order to complete the component data Xa by adding “at”, as in the case of an ejector pin, which is an in-house standard component,
Even a component having a standardized part such as a head and a thickness and a part which is individually set such as a length can be made into a database.

[0011]

Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

First, a schematic configuration of a three-dimensional CAD system that can execute the component data registration method according to the present embodiment will be described with reference to FIG.

In FIG. 1, a three-dimensional CAD system 1 includes a computer main body 2 for executing various calculations and controls, and the like. The computer main body 2 stores standard data Xas... Relating to standardized portions of component models Pa. A text file F to be registered, a data table T for registering component data Xa... Relating to the component models Pa as a database M, and a memory (not shown) for storing various data such as modeling data are attached. In addition, an input unit 3 such as a keyboard, a touch pen, and a mouse is connected to the computer body 2, and a graphic display 4 for displaying a model and an XY plotter (printer) 5 for printing out the model are connected.

Next, a method for registering component data according to the present embodiment will be described with reference to the flowchart shown in FIG. 1 and each of FIGS.

In the embodiment, an ejector pin used in an injection molding die, which is an in-house standard part, is shown as a part model Pa. FIG. 3 shows an ejector pin 10 including a head 11 and a pin body 12, and FIG. 4 shows an injection molding die 20 including the ejector pin 10. Same mold 2
Reference numeral 0 denotes a combination of a plurality of mold plates 21, 22, 23,..., And the ejector pin 10 has a function of projecting a molded product formed by the cavity Ca (product model Da).

Next, a method of registering such an ejector pin 10 (part model Pa) as solid-based part data Xa will be described.

First, standard data Xas... Relating to standardized portions of a plurality of component models Pa... Are registered in the text file F in advance. In this case, the ejector pin 10, which is an in-house standard part, is a part in which the diameter A of the head 11, the diameter B of the pin body 12, and the axial length C of the head 11 shown in FIG. In F, data relating to A, B and C are registered as standard data Xas. Therefore, the length D of the pin body 12 is individually set. Further, the standardized part of the JIS standard part is a part standardized by the JIS standard.

Now, assume that the ejector pin 10 is modeled when the mold 20 is modeled. It is to be noted that the time of this modeling is the time of registration of the component data Xa.

First, the standard data Xas corresponding to the ejector pins 10 is read from the text file F. In this case, first, the type of component is input according to the menu screen (step S1). The type of a part is a manufacturer name, a product name, or the like, and an ejector pin of a specific manufacturer is input. Further, a part size is input (step S2). In this case, the component size is a symbol for each size set by M1.6, M2, etc. in the bolt of the JIS standard component, and a symbol for each size of the ejector pin set similarly is selected. With the above selection,
The standard data Xas corresponding to the ejector pin 10 (part model Pa) is specified, and the standard data Xas is read from the text file F.

Next, the user inputs the conditions for mounting the ejector pins 10 (step S3). The mounting condition is a condition on the mold 20 side, and includes, for example, a condition such as a size of a necessary hole for the ejector pin 10.

As described above, when the items of steps S1 to S3 are input, the necessary length D for the ejector pin 10 is automatically determined (calculated) by a predetermined conversion program Cp as shown in FIG. Step S4). As a result, the data related to the length D becomes the additional data Xat, and the component data Xa related to the ejector pin 10 is created by being added to the standard data Xas, and the final component data Xa is completed. In the case of such an ejector pin 10, a unique length D is set individually. However, when a portion corresponding to the length D is standardized (standardized) as in JIS standard parts. , The closest length D is selected.

Then, the created component data Xa, that is, the component data Xa relating to A, B, C and D is registered in the data table T as a database M as shown in FIG. 2 (step S5). Note that the name at the time of registration is automatically determined.

The part models Pa... Include various types of pins (in-house standard parts) such as an ejector pin 10 as an example, a knock pin for positioning, an obliquely arranged angular pin, and a bolt (JIS standard part). ) Are applied. Therefore, the same procedure is performed for other component models, and the obtained component data is sequentially registered in the data table T (step S6).

As described above, the data registered in the text file F is only the standard data relating to the standardized parts of the component models Pa..., And the data amount is greatly reduced. On the other hand, at the time of registering component data relating to an arbitrary component model Pa, the corresponding standard data Xas is read from the text file F, and the read standard data Xa is read.
By adding additional data Xat to s,
The component data Xa relating to the component model Pa is created, that is, the component data Xa is completed, and the obtained component data Xa is used as a database M as a data table T
, The database M is a set of parts data Xa... Necessary for the user, and the memory capacity of the database M is greatly reduced. As a result, the cost advantage is enhanced.

Further, in order to complete the component data Xa by adding the additional data Xat, a standardized portion such as a head and a thickness, such as an ejector pin, which is an in-house standard component, and a length and the like are used. Even parts having individually set parts can be made into a database, and the creation of a database on parts is promoted, so that modeling efficiency is dramatically improved.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment,
The details can be arbitrarily changed without departing from the gist of the present invention.

For example, the concept of the additional data includes not only newly added data but also changed data for changing standard data. In addition, although the modeling time is exemplified as the registration of the component data of an arbitrary component model, the registration may be performed only for the registration of the component data without modeling the component model.

[0028]

As described above, the three-dimensional CAD according to the present invention is
The part data registration method of the system is such that, in advance, standard data relating to a standardized part of a part model relating to bolts or pins is registered in a text file, and at the time of modeling relating to an arbitrary part model, it corresponds to the part model. The standard data is read from the text file, and additional data is added to the read standard data to create the component data relating to the component model, and the created component data is used as a solid-based component data database. As a result, the following remarkable effects are obtained.

The data registered in the text file is only standard data, and the database is a set of parts data necessary for the user. Therefore, the memory capacity of the database is significantly reduced, and the cost advantage is reduced. Can be enhanced.

In order to complete component data by adding additional data, standardized portions such as an ejector pin, which is an in-house standard component, and a standardized portion such as a head and a thickness and lengths and the like are individually set. Even if the part has a part, the database can be created, and the database of the part can be promoted to greatly increase the modeling efficiency.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating a processing procedure of a component data registration method according to an embodiment;

FIG. 2 is a functional block diagram for explaining the part data registration method;

FIG. 3 is a perspective view of an ejector pin registered by the part data registration method,

FIG. 4 is a schematic view of an injection mold including the ejector pin.

FIG. 5 is a three-dimensional CAD for implementing the part data registration method.
Block diagram of the system,

[Explanation of symbols]

 1 3D CAD system Pa ... Part model Xa ... Part data Xas standard data F Text file Xat Additional data M Database T Data table

Claims (1)

(57) [Claims] 1. A three-dimensional C for registering a part model relating to bolts or pins as solid-based part data.
In the part data registration method of the AD system, standard data relating to a standardized part of a part model is registered in a text file in advance, and at the time of modeling relating to an arbitrary part model, the standard data corresponding to the part model is stored in the text file. By adding additional data to the read standard data and the read standard data, component data relating to the component model is created, and the created component data is registered in the data table as a database serving as solid-based component data. A part data registration method for a three-dimensional CAD system.