JPH07287725A - Method for preparing specification - Google Patents

Abstract

PURPOSE:To efficiently prepare a specification indicating the shapes or the like of jigs for supporting the body of an automobile by extracting three- dimensional CAD data for all members constituting a work, preparing the cross section of the work. combining the constitutional members on a place positioned by a jig and arranging the supporting member of the jig concerned on the cross section. CONSTITUTION:The identification(ID) number of a new work W is selected from an input means 104 and the combination relation of members Wa to We constituting the work W and three-dimensional data are read out to prepare a three-dimensional drawing for the work. Then a current work W' and a jig specifying member are displayed on a CRT display 102 by the extraction instruction of the current jig specification data from an instruction input device 108. In addition, the side-view of the new work W is displayed on the display 102 so as to be superposed to the display screen. A position where the work W is to be supported by the jig is inspected and a cross section on the supporting position is prepared. Thus jig specification data prepared for the supporting position of each jig are prepared as a specification file.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of preparing a specification sheet for a jig which is arranged on a manufacturing line of an automobile or the like and positions a work.

[0002]

2. Description of the Related Art In the automobile manufacturing industry, CAD bodies are used to design automobile bodies and the like. Therefore, not only the design can be easily changed, but also the data of the automobile body or the like created by the CAD device is used for the molding die manufacturing data, the structural analysis data, etc., which contributes to the improvement of the productivity.

[0003]

By the way, the shape of the automobile body is changed by the model change of the automobile,
Accordingly, the position of the jig for positioning (supporting) the automobile body or the shape of the jig for supporting the body is changed. At that time, if the jig arranged on the current line can be used as it is, the change of the line can be suppressed to a small scale, and the burden on the manufacturing department can be reduced. Therefore, it is necessary to consider whether the existing jig can be used for a new car body, whether the shape and position of a part of the jig can be changed, or whether it needs to be replaced with a new jig. I had to do it.

Conventionally, in this study, designers have examined the jigs one by one while comparing the jigs arranged on the current line with the drawings of the current car body and the drawings of the new car body. Therefore, the study work was complicated and it was not possible to improve the productivity.

Further, even when a completely different vehicle model from the current vehicle model is manufactured on the same line, the position of the jig is referred to by referring to the positions of the pillars in the factory and the positional relationship with other line devices. Etc. must be set. Therefore, in order to newly create a jig specification document, a very complicated examination work is required.

The present invention has been made in order to solve this kind of problem, and it is efficient to refer to the current jig specification sheet for the specification sheet showing the shape of the jig for supporting the automobile body. The purpose is to provide a method of creating specifications that can be created in a specific manner.

[0007]

In order to achieve the above-mentioned object, the present invention is a method for preparing a specification sheet for a jig for positioning a workpiece, which is a production factory or line equipped with the jig. Etc., the second step of extracting the equipment environment data and the current jig data based on the designation, and the jig based on the correspondence relationship of the newly machined workpiece. The third step of extracting the three-dimensional CAD data of the constituent members constituting the workpiece to be positioned, and the constituent member at the position where the jig supporting member positions the workpiece based on the three-dimensional CAD data of the constituent member. The fourth process of creating a sectional view of the combined work, and the supporting member of the current jig is arranged on the sectional view, and the data of the sectional view where the supporting member is arranged is changed to the new jig specification data. Wherein the fifth step of registering, in that it consists of a.

[0008]

In the specification creating method according to the present invention, the three-dimensional CAD data of all the members constituting the work is extracted based on the correspondence relationship between the newly processed work and the three-dimensional CAD data at the position where the jig is positioned. By creating a cross-sectional view of the work in which the constituent members are combined and arranging the support members of the current jig on the cross-sectional views, the cross-sectional view data where the support members are arranged is used as new jig specification data. register. Therefore, since new jig specification data is created using the current jig specification data, a new jig specification document can be created efficiently.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for creating specifications according to the present invention will be described in detail below with reference to the accompanying drawings, with reference to preferred embodiments.

In this embodiment, a case where the work is a side panel will be described. As shown in FIG. 3, the jig for creating the specifications in the present embodiment, when manufacturing a work composed of the respective members W2a to W2e, the respective members W2a.
~ W2e is positioned. Positioned members W2
a to W2e are joined to each other by spot welding or the like,
It becomes the work (side panel) W2.

At this time, the jig, for example, the jig J6 shown in FIG. 9, is mounted on the jig base surface 30 with the support member 34 via the bracket 32. A support member 38 is attached to the formed bracket 36 via a pin member 37. The support member 38 is configured to be rotatable about the pin member 37 in the arrow direction by driving a cylinder 40 attached to the bracket 36. In addition, the support member 42
Similarly to the support member 38, is also configured to be rotatable in the arrow direction by driving a cylinder with respect to a bracket (not shown). Therefore, the work W2 can be positioned by the support members 34, 38, 42. When the sectional shape of the work W2 is changed, the shape of the support members 34, 38, 42 is changed, or the positions of the brackets 32, 36 to be mounted on the jig base surface 30 are changed. It is possible to deal with a change in the cross-sectional shape of W2.

As described above, by changing the shape of the support members 34, 38, 42 or changing the positions of the brackets 32, 36, it is possible to minimize the time and effort required to replace the jig by changing the sectional shape of the work W2. Therefore, a method of creating a specification for efficiently examining the change will be described below.

First, the specification creating apparatus used in the above method will be described. The specification creation device 10 includes an input / output unit 100, a display control unit 200, and a data creation unit 30.
0, an external storage device 400.

The input / output means 100 comprises a CRT display 102, an input means 104, a mouse 106, and an instruction input device 108 including function keys. The input means 104 may be replaced with a cursor, and the mouse 106 may be replaced with a tablet.

The data creating means 300 is an external storage device 4.
Data extracting means 302 for extracting necessary data from 00
And a data conversion means 304 for mutually converting the three-dimensional CAD data and the two-dimensional CAD data and, when either one of the data is changed, changing the other data, and an internal memory 306. , A study data storage unit 308 for examining whether or not the current jig can cope with the new work W2 by superposing the drawings of the current jig specification and the current production work and the new work W2,
As a result of the above-mentioned examination, the specification creating means 310 which uses the current jig specification data as it is for the current jigs that can be used, and changes the jig position data to create the data when the position needs to be changed. Consists of.

The external storage device 400 is a manufacturing facility, a process, a layout of lines, a jig, ready-made peripheral equipment such as a pillar of a factory or an adjacent device, equipment such as a jig base or hydraulic / pneumatic equipment,
Correspondence relationship between a first database 402 that stores equipment environment data about robot devices and various welding guns, a second database 404 that stores three-dimensional CAD data of each member, and a work that is a work target part In the case of welding work, for example, a third database 406 that stores the combinational relationship between members to be joined, the positional relationship between the members, and the like, and a file of ready-made jig specifications are stored. It comprises a fourth database 408.

Next, a method of preparing a specification for a jig for positioning the side panel of an automobile when welding the side panel will be described in detail below with reference to the flowchart of FIG.

First, the operator specifies the name of the factory (manufacturing number), the line name (line number), the jig name (jig number), etc., in which the new vehicle model is manufactured, for example, from a menu arranged in advance in a fixed form. , The input means 104, which is designed to be selected by the mouse 106, the keyboard, or the like. As a result, the extraction conditions of the jig to be examined are set in the data extraction unit 302 (step S1).

Next, a new work W2 is input from the input means 104.
By selecting the identification number of No. 2 and performing a secret input with a cursor or the like, the combination relation of the members W2a to W2e forming the new work (side panel complete) W2 as shown in FIG. 3 from the third database 406 and the member W2a. The data indicating the joining positional relationship of W2e to W2e is read, and the second database 404 is read based on the data.
The three-dimensional CAD data of the members W2a to W2e are read from, and the three-dimensional CAD data of the new work W2 in which the members W2a to W2e are combined at the abutting positions are created and stored in the internal memory 306. Further, the three-dimensional image of the new work W2 is displayed on the CRT display 102 via the display control means 200 to confirm the shape and the like of the new work W2.

By inputting a three-view drawing instruction from the instruction input device 108, the three-dimensional C of the new work W2 is input.
The AD data is transferred from the internal memory 306 to the data conversion means 30.
4 is input. In the data conversion means 304, two-dimensional CAD data such as plan view data, side view data, and front view data is created by projecting and converting the three-dimensional CAD data, and the two-dimensional CAD data is stored in the internal memory 3.
It is stored in 06 (step S2).

Then, by instructing the extraction of the current jig specification data from the instruction input device 108, step S1
The specification file of the current jig is stored in the examination data storage means 308 from the fourth database 408 based on the extraction condition set in (step S3). It should be noted that the current jig specification data is, as shown in FIG. 4, a plan view 50 and a side view 52 of the current work W1 in which the support position P ′ is displayed in which the jig support member supports the current work W1. , Rear view 5
4 is three side view data including 4 and side view data including side views 60 and 62 showing a cross section of the current work W1 and side surfaces of jig support members 56a to 56c, 58a and 58b. Among these, the side view (see FIG. 5, one-dot chain line) in which the supporting position P ′ of the jig is written is displayed on the CRT display 10 through the display control means 200 based on the three-view drawing data.
Display on 2.

Further, by inputting a side view display instruction from the instruction input device 108, the side view data of the new work W2 is stored in the examination data storage means 3 from the internal memory 306.
It is stored in 08. Based on the side view data stored in the examination data storage means 308, a side view of the new work W2 (see FIG. 5, solid line) is overlaid on the CRT display 102 on which the side view of the current work W1 has already been displayed. To do. The operator operates the displayed new work W2.
At which position the new workpiece W2
Consider whether to support the jig on the jig. Data conversion means 30 for creating a three-view drawing by designating the supporting positions P1 to P7 to be supported by the jig on the side view with the mouse 106.
Reference numeral 4 indicates the jig supporting positions P1 to P7 in the side view data, and the jig supporting position P is shown on the side view.
1 to P7 are displayed (see FIG. 5) (step S4).

By the way, the current work W in which the support positions P1 'to P7' are already written on the CRT display 102.
The side view of No. 1 is displayed, and the side view data of the new work W2 is displayed in an overlapping manner (see FIG. 5).
While watching the screen of the CRT display 102, new and existing support positions P1 to P7 and P by the jig
Consider whether 1'-P7 'is valid. That is, the new support positions P1 to P1 set in step S3 are set.
If P7 is deviated from the current support positions P1 'to P7', it is examined whether or not the new support position may be changed to the current support position. This is the support position P1 by the jig.
This is because it is better not to change the position of the jig because it is less burdensome for the production line to change P7 from the previous specification than to make a new change. When changing the new support positions P1 to P7 to the current support positions P1 ′ to P7 ′, the support positions P1 to P7 of the jig of the new specification are corrected by pointing with the mouse 106, or 2
When using a jig common to all models, consider different support means in parallel and shift means.

Next, by inputting an instruction for creating a sectional view from the instruction input device 108, the three-dimensional CAD data (surface model or wireframe model) of the new work W2 stored in the internal memory 306 is converted. It is output to the means 304. The data conversion means 3
In 04, the support positions P1 to P indicated on the side view are indicated.
By cutting this model at 7, the cross-sectional shape data of the new work W2 at the supporting positions P1 to P7 is created, and the cross-sectional shape data is stored in the internal memory 3.
It is stored in 06 (step S5).

After the data necessary for the examination is prepared in this way, the examination is carried out. First, a study instruction is input from the instruction input device 108, and a new workpiece W2 is selected from the supporting positions P1 to P7 by the jig of the side view displayed on the CRT display 102 by the mouse 106 or the like.
Select the support position to examine the cross-sectional shape of.

For example, if the support position P1 is selected, the current jig specification side surface data and the section data of the new workpiece W2 are read from the internal memory 306 at the support position P1 and the side surface and the section are overlapped. A cross-sectional view (XY plane) is displayed on the CRT display 102 via the display control means 200 (step S6). That is, as shown in FIG. 6, the support member 1 that constitutes the existing jig J1.
The cross sections of the side surfaces of Nos. 2 and 14 and the current work W1 (dashed line) and the new work W2 are displayed. When trying to support the new work W2 by the support members 12 and 14 of the existing jig J1, the work supports 12a and 14a forming the support members 12 and 14 can support one end of the current work W1. 12b and 14b are new works W2
Cannot support the other end of. Therefore, the instruction input device 10
A drawing instruction is input from 8, and the design is changed using the mouse 106 or the like (step S7). That is, as shown in FIG. 7, the work support 12b constituting the support member 12 is changed to a work support 12b ′, and the support member 14 is used.
The work support 14b constituting the above is deleted. In this way, the changed sectional view data is output to the specification creating means 310 as new sectional view data, and the sectional view data is output to the data converting means 304. In the example of FIG. 6, the data converting unit 304 creates new three-dimensional shape data of the support members 12 and 14 by giving a predetermined width in the Z direction based on the change of the cross-sectional view data. It is output to the writing means 310. Here, the three-dimensional data of the jig J1 which has been corrected so that the width in the Z direction is the same as that of the current jig is registered in the specification creating means 310 as new jig specification data (step S8).

Next, a sectional view of the support position P2 by the jig J2 is displayed (see FIG. 8) (step S6). Since the cross-sectional shape of the current work W1 and the cross-sectional shape of the new work W2 at the support position P2 are completely the same, the current jig J2 may be used as it is. Therefore, the instruction input device 108
By inputting an OK signal from the current jig specification data, the current jig specification data is registered as it is in the specification creating means 310 as new jig specification data (step S9).

Hereinafter, the supporting position P3 by the jigs J3 to J5
~ P5 are processed in the same way.

Subsequently, a sectional view of the support position P6 by the jig J6 is displayed (see FIG. 9) (step S6). In this case, the cross section of the new workpiece W2 of the existing jig J6 is superimposed on the side view at the support position P6 '. As shown in FIG. 9, the current work W1 and the new work W2 have the same sectional shape, but their positions (height in the Z direction) are different. Then, input the drawing from the instruction input device 108,
The jig J6 is displaced in the Z direction by a predetermined distance (step S
7). As a result, as shown in FIG. 10, the jig J6 can support the new work W2 simply by displacing its position. The data in which the support position of the current jig specification data is changed is used as new jig specification data to create the specification sheet 31.
0 is registered (step S8). The actual change of the supporting position of the jig J6 is to displace the mounting positions of the brackets 32 and 36 with respect to the jig base surface 30 by a predetermined distance in the Z direction, as shown in FIGS.

In this way, the jig specification data created for the supporting positions P1 to P7 of all the jigs is created as a specification file in the specification creating means 310, and the CRT display is also displayed via the display control means 200. A specification is created in 102 in substantially the same manner as in FIG. 4 (step S10). The specification file created in this way is transferred to the manufacturing department or the like and used for changing jigs such as lines.

The jig data thus created can be diverted to the NC processing data of the jig.

As described above, according to the method of preparing specifications according to the present embodiment, not only the required data can be easily retrieved by inputting the manufacturing site, line name, etc., but also the existing jig specification data and new The side view of each work is overlaid from the three-dimensional CAD data of the work, and the cross-section created from the above-mentioned three-dimensional CAD data and the cross-sectional view of the above-mentioned jig specification are overlaid to create a new work with the existing jig. It can be confirmed whether or not can be surely supported. Therefore, new jig specification data is created using the current jig specification data. Moreover, since the design can be changed on the cross-sectional view, the efficiency of creating the specifications is significantly improved.

[0033]

According to the specification creating method of the present invention,
The following effects can be obtained.

That is, not only can the required information be retrieved quickly, but the current jig specification data can be used as new jig specification data. Therefore, the work of examining whether the current jig can be used for a new work while looking at the drawing is made efficient, and the efficiency of creating the specification is improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a specification creation device according to an embodiment of the present invention.

FIG. 2 is a flowchart of a specification creating method according to an embodiment of the present invention.

FIG. 3 is a schematic explanatory view showing a correspondence relationship of members constituting a work in the specification creating method according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a jig specification displayed on the screen.

FIG. 5 is a side view for study in the specification creating method according to the embodiment of the present invention.

FIG. 6 is a cross-sectional view for examination in a method for creating a specification according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view for examination in a method for creating a specification according to an embodiment of the present invention.

FIG. 8 is a cross-sectional view for study in a method for creating a specification according to an embodiment of the present invention.

FIG. 9 is a cross-sectional view for study in a method of creating a specification according to an embodiment of the present invention.

FIG. 10 is a cross-sectional view for examination in a method of creating a specification according to an embodiment of the present invention.

[Explanation of symbols]

10 ... Specification creation device 100 ... Input / output means 200 ... Display control means 300 ... Data creation means 400 ... External storage device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Fukuda 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd.

Claims (2)

[Claims] 1. A method for creating a specification sheet for a jig for positioning a workpiece, which comprises a first step of designating a production factory, a line, etc. equipped with the jig, and a facility environment based on the designation. Based on the second process of extracting the data and the current jig data, and the correspondence between the newly machined workpiece, the three-dimensional CAD data of the constituent members constituting the workpiece positioned by the jig are extracted. A third step, and a fourth step of creating a sectional view of the work in which the constituent members are combined at a position where the jig supporting member positions the work based on the three-dimensional CAD data of the constituent member, A fifth step of arranging a supporting member of an existing jig on the sectional view and registering the data of the sectional view where the supporting member is arranged as new jig specification data. That specification creation method. 2. The method according to claim 1, wherein in the fifth step, a cross-sectional view of the work and a side view of a supporting member in the current jig are overlapped on the same screen to obtain a current jig specification. Up to the process of determining whether or not the work can be handled, and if it is possible, the current jig data is added as it is to the cross-sectional view data of the work and registered as new jig specification data. If the current jig data is changed to a shape that can support the work, it is added to the cross-sectional view data of the work and registered as new jig specification data when it is not possible to correspond. How to create specifications.