JP2819907B2 - Processing data creation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machining data creation apparatus, and more particularly to a machining data creation device capable of quickly and easily creating CAM data converted from shape data created by CAD data into actual NC machining data. Related to the device.

[0002]

2. Description of the Related Art CAD (Computer Aided Design) functions extremely effectively to design parts having complicated shapes, and even when partially modified drawings or materials, required strengths, and the like are different, these functions can be used. Changes can be made very quickly and easily, providing the most suitable design tools for recent high-mix low-volume production systems. In particular, in mold design and the like, the product mold and the mold structure required for the mold itself must be effectively combined, and the CAD is indispensable when designing such a mold. .

However, even if a part drawing is created using such CAD data, a CAM (computer-assisted production) is required to obtain shape data that takes into account machining procedures, setups, and the like necessary for actual NC machining. In dies and the like, machining data is created by CAM in a form in which the product mold and the mold structure are separately or simultaneously matched.

Conventionally, when a part drawing, for example, a mold drawing is created based on CAD data, a C drawing is subsequently created.
The conversion into NC processing data is performed by the AM, but as is well known, the CAD data has each line segment forming the figure as independent data, and does not include the procedure and other information necessary for processing. When the CAD data is converted to the CAM data, complicated data input support by an operator is required, and a combination of a plurality of line segments on the CAD data actually forms a combination of minimum processing units such as an outer shape, a hole, and a groove. The conversion of CAM data must be performed while considering the combination shape as each lump. For this reason, the conversion work from CAD data to CAM data occupies a larger proportion of the whole work data creation work. There is a problem in that the benefits of computer support are diminished. Conventionally, such CA
Japanese Patent Application Laid-Open No. 62-127907 is known as an apparatus for efficiently and organically performing D / CAM combination processing. According to this conventional apparatus, automatic production is performed from part drawing data and material drawing data by CAD. It has been proposed that NC processing data that can be directly applied to a system be converted by a CAM device. That is, according to this conventional device,
The figure shows a procedure for dividing a processing shape into minimum processing units and determining a processing method for each unit.

[0005] Therefore, according to this conventional apparatus, there is an advantage that machining information including a machining procedure and the like can be obtained consistently from CAD part data and material drawing data.

[0006]

However, in this conventional apparatus, the CA required for each machining shape is required.
It is necessary to perform D / CAM conversion, and the same CAD / CAM conversion is required repeatedly for a standardizable part such as a mold structure in a mold, which causes a problem that processing efficiency is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an improved method capable of obtaining necessary processed data by CAM processing while effectively utilizing CAD data very quickly and easily. An object of the present invention is to provide a processing data creation device.

[0008]

In order to achieve the above object, the present invention displays a part shape based on CAD data, and displays a standard parametric combination shape of a minimum processing unit as a standard processing shape. It is characterized in that the CAD data can be picked for the standard machining shape and necessary variables can be input.

That is, there are a number of standard combination shapes in the part shape.
When the machining data is converted, it is displayed together with the part shape data, and by comparing the two, the dimension values held by the CAD data are picked into the standard machining shape to easily perform the organic coupling between the two. Can be.

Further, according to the present invention, the display means displays an input guide for supporting the input of parametric variables to the standard machining shape, and the operator inputs CAD data in accordance with the variable input guide. Can be picked from.

The parametric variables input in this way are temporarily stored in a variable table, and then the calculation means determines necessary dimension values of the variable table based on a predetermined parametric calculation. The CAM data is created based on the variable table.

[0012]

Therefore, according to the present invention, the operator is
While confirming the D-processed component shape and the standard combination shape of the minimum processing unit on the display unit, it is possible to perform CAM processing on individual groove or hole shapes. This CA
The M processing is performed based on the variable input guide displayed on the display means.
From the data shape, it can be easily captured by a tablet-like pick. After these input values are stored in the variable table, the calculation means performs necessary parametric calculation, and processing data can be determined for each individual combination shape.

Therefore, according to the present invention, it is possible to quickly create necessary processing data while effectively utilizing CAD data.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall schematic diagram of a machining data creating apparatus according to the present invention. In the figure, CAD
The data file 10 stores CAD-processed part shape data. In the CAD data, as is well known, individual line segment elements are not associated with each other, and each line segment data is actually a coordinate position at both ends. Alternatively, since only the data of the center coordinate and the diameter are stored, and the individual elements are disjoint, in order to create a CAM figure as it is, these are extracted as a lump of data necessary for the combination shape of each processing unit. It is necessary to.

In the present invention, since the shapes viewed as individual minimum processing units at the time of actual processing data creation are a combination of relatively simple shapes, and are often mounting portions for standard parts or are standardized in design. These can be separately stored in advance as standard processing shapes, and the standard processing shape file 11 in the embodiment stores such a standard parametric combination shape of the minimum processing unit. As will be described later, this standard machining shape file 11 contains not only standard machining shapes but also standard values, input variables, parametric arithmetic expressions, and CAM graphic shapes, which are standard dimensions of each shape. Includes necessary shape technology data and tolerance technology data. The outputs of both data files 10 and 11 are displayed by display means 12, which in the embodiment includes a CRT display and a tablet, a guide shape based on the CAD data and a standard processing shape and necessary variables. The input guides are displayed individually or on the same screen.

A variable table 13 is provided for storing the dimension value of the selected standard machining shape as a parametric variable. In the present invention, the variable value picked from the CAD data and the result of the parametric operation are stored in the variable table 13. Stored in the variable table 13.

A feature of the present invention is that a figure picking means 14 is provided for picking a required shape part from the CAD data shape displayed on the display means 12 and inputting the picked-up part to the variable table 13. In the embodiment, the picking means comprises a tablet for displaying CAD data. A necessary graphic element is picked on the tablet, and the CAD data is taken into the variable table 13.

In this embodiment, the numerical value input means 15 is provided separately from the graphic picking means 15. When CAD data is not used or other necessary numerical values are inputted, numerical value input means such as a keyboard is used. 15 and supplied to the variable table 13.

Further, in the present invention, the necessary parametric calculation is performed by the calculating means 16 based on the parametric calculation formula defined by the variables input to the variable table 13 and the standard machining shape, and the result is again stored in the variable table. 13 is stored.

Then, based on the obtained variables, CA
M figure creating means 17 creates necessary CAM data and
It can be output as C processing data or the like.

It is extremely useful to apply the processing data in the present invention to a mold having many standard shapes, especially to a runner, a guide and other mold structures having many standard shapes. In the following, the creation of CAD / CAM data having such a type structure will be described.

FIG. 2 shows some standard machining shapes in the mold structure. As is apparent from the figure, various pockets or holes must be carved in the mold mating surface, and as shown in FIG. Each pocket and hole are classified into several standard shapes, and a standard machining shape is predetermined by a combination of these. FIG. 3 shows CA
The shape of the pocket having the corner relief at the four corners indicated by the D data is displayed.
Such display can be performed by the CAM data from the AD data file 10. Then, CA in FIG.
According to the D data, the operator can select a desired shape from the standard machining shapes shown in FIG.
Shows a display example of the standard machining shape captured in this manner.

The display means 12 further displays a variable input guide for sequentially inputting the respective dimension values of the standard machining shape shown in FIG. 4, and FIG. 5 shows an example of the standard input guide. Further, FIG. 6 shows a desired CAM using the preferred embodiment of the processing data creation apparatus according to the present invention shown in FIG.
The procedure for creating a figure is shown.

The operation of the present invention for quickly creating a CAM figure while utilizing CAD data will be described in detail with reference to these figures.

First, a standard machining shape is selected in FIG. 6 (S10), and the four corner corner relief pockets of FIG. 4 are displayed on the display means 12 (S11). Then, step S1
2, parameter declaration data is sent from the standard machining shape file 11 to the variable table, and as shown in FIG. 7, six variables, ie, the horizontal L1, vertical L2, height H1, corner diameter D1, and corner length H2 of the pocket. Then, the inclination angle T1 with respect to the reference coordinates is selected as a necessary variable.

Next, a predetermined standard value is read from the standard machining shape file 11, and in the embodiment, the pocket length L2 is 80 mm and the corner diameter D1 is 15 m.
m is temporarily set (S13).

Next, the input guide shown in FIG. 5 requests pick input, and necessary graphic elements LN1, LN2, LN3, LN are displayed from the CAD data display screen shown in FIG.
4, LN5 and CR1 are picked (S14). These picked input values are set in a variable table (S
14) Further, necessary parametric calculation formulas are read from the standard machining shape file 11, necessary calculations are performed, and the calculated values are set in the variable table 13 again (S15). The calculation at this time is also displayed on the input guide. As is apparent from the figure, the pocket width L1 is the distance between the CAD-shaped LN1 and LL3, and the same applies to the vertical L2, the height H1, and the angle T1. Then, the corner depth H2 is obtained based on a predetermined reference value or an arithmetic expression. In the embodiment, the pocket length L in which the standard value is set is set.
2 is also changed from the standard value of 80 mm to 75 mm.

When all the variable tables have been filled as described above (S16), the shape of the selected pocket is determined, and then in step S17,
A CAM figure is created based on the shape description data read from the standard machining shape file 11, and tolerance information is added using the tolerance description data (S18).

The CAM figure obtained in this way is different from the CAD figure consisting of the above-mentioned discrete line segment data, and is CAM data having a structure as a processing shape. It is possible to create NC processing data and the like.

As described above, according to the present invention, CA
M data is displayed, and data input for CAM figure creation can be performed very easily from a pick on the display screen. However, even when such CAD data is not used, in the embodiment, as shown in FIG. Necessary variable data can be obtained by keyboard input. FIG. 8 is substantially the same as FIG. 6 of the CAD data pick described above. What is characteristic in FIG. 8 is that the necessary variable values are input from the keyboard in step 20, whereby CA
When the D data cannot be used or necessary data for processing which is not represented in the CAD data can be input.

Therefore, the keyboard input in step 20 can be used in combination with the picking of the CAD data also in FIG. 6 described above.

As described above, according to the present invention, it is possible to effectively utilize CAD data to make use of creation of necessary machining data.

[0034]

As described above, according to the present invention,
By displaying the CAD data graphic and the standard machining shape on the display means, and displaying the input guide required for data input, the operator can very easily set the necessary variable values to C.
Pick input from AD data figure
There is an advantage that CAM figure creation from data can be performed very quickly and easily.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of a CAD data creation device according to the present invention.

FIG. 2 is an explanatory view showing an example of a standard processing shape when the present invention is used for a mold structure.

FIG. 3 is an explanatory diagram showing an example of CAD data graphic display in the embodiment.

FIG. 4 is a display explanatory diagram showing an example of a selected standard machining shape in the embodiment.

FIG. 5 is an explanatory diagram illustrating an example of an input guide according to the present embodiment.

FIG. 6 is an explanatory diagram showing a processing data creation procedure in the embodiment.

FIG. 7 is an explanatory diagram showing transition of a variable table in the embodiment.

FIG. 8 is an explanatory diagram showing a procedure for inputting a variable value by keyboard input in the embodiment.

[Explanation of symbols]

 Reference Signs List 10 CAD data file 11 Standard machining shape file 12 Display means 13 Variable table 14 Pick means for figures 16 Calculation means 17 CAM figure creation means

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-12309 (JP, A) JP-A-1-229375 (JP, A) JP-A 64-68807 (JP, A) JP-A 5- 158523 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) G05B 19/4097 B23Q 15/00 301 G06F 17/50

Claims (1)

(57) [Claims] 1. A CAD data file storing part shape data processed by CAD, a standard processing shape file storing a standard parametric combination shape of a minimum processing unit, a part shape and standard processing based on CAD data. A display means for displaying a guide figure based on the shape and a required variable input guide; a variable table capable of storing a dimension value of the selected standard machining shape as a parametric variable; and a required shape portion based on the displayed CAD data shape. Select
By doing, the numerical data of the part shape in the CAD data file
A peak <br/> click input means can input in the variable table with the data and variables, required parametric calculation based on a parametric calculation formula defined by the variables and the standard machining shape entered in the variable table A machining data creation device, comprising: a parametric calculation means for inputting a result to a variable table; and a CAM figure creation means for creating CAM data based on a variable value of the variable table.