JPH01257526A - Wire cut electric discharge machine - Google Patents

Abstract

PURPOSE:To facilitate control of input of data and to prevent production of an adverse effect on a state left non-inputted by a method wherein from thickness data of a work and a height from a table surface to a program surface is read according to an NC program, and is used as taper machining data of electric discharge machining. CONSTITUTION:When thickness T-W data of a work or at least T-W data of T-PROG data on height from a table surface to a program surface is stored in the memory of an NC device, based on the angle of an NC program and T-W data (or data containing T-PROG data), taper calculation is performed. Meanwhile, when the T-W data or the T-PROG data is stored in the NC device, there is a need to execute taper calculation again based on new T-W data or T-PROG data, and respective data is varied into a new value and tape calculation is performed again. When the T-W data and the T-PROG data are both not written in an NC program, error display is effected.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a wire cut electric discharge machining method.

[Prior art] In a conventional wire-cut electrical discharge machine, before executing an NC program, workpiece thickness (T-W) data, T
- PROG (height to table surface color program surface) data is input by a processing worker via a keyboard or the like. Then, the NC 9 position performs taper calculation based on the angle written in the NC program.

[Question 8 to be solved by the invention] Like the conventional device, before executing the NC program, T
If the -W data and T-PROG data are input by a processing worker, there is a problem that the operation for inputting these data is complicated, and there is also a problem that the user forgets to input the above data.

The present invention provides a wire-cut electric discharge machining method in which inputting of TW data and T-PROG data is easy and there is no problem caused by forgetting to input the data.

[Means for Solving the Problems] The present invention reads the plate thickness data of the workpiece and the height of the program surface from the table surface from the NC program, and uses the above-mentioned read data as taper machining data for electric discharge machining. It is.

[Function] The present invention reads the workpiece thickness data and the height of the program plane from the table surface from the NC program, and uses the above-mentioned read data as taper machining data for electric discharge machining. It is easy to input data and T-PROG data, and there is no problem with forgetting to input the data.

[Example] FIG. 1 is a flowchart showing an example of the present invention.

First, after turning on the power, T-W (workpiece thickness)
Determine whether data or T-FROG (height from table surface to program surface) data is stored in the memory of the NC (numerical control) device (S1), and at least T-FROG data is stored in the memory of the NC (numerical control) device. If stored in the memory of the device, taper calculation is performed based on the angle written in the NC program and the TW data (or data including T-PROG data) (S2).

After the taper calculation is completed, the new T-
It is determined whether W or a new T-PROG is stored in the memory of the NC device (S3).

In S3, if the above data is not stored in the memory of the NC device, there is no need for subsequent taper calculation, so the taper calculation operation is ended.

On the other hand, in S3, T-W data or T-PROG
If the data is stored in the memory of the NC device, it is necessary to perform the taper calculation again based on new T-W data or T-PROG data. Change the data to new values (S4)
, perform the taper calculation again (S2).

As mentioned above, if you perform taper calculations based on the TW data or T-PROG data written in the NC program, you can calculate the amount of processing by using those data immediately before executing the NC program. There is no need for manual input, and input operations are easy. Furthermore, there is no harm caused by forgetting to input such data.

In S5, if both T-W data and T-PROG data are not written in the NC program, those data are not written (not input) anywhere.
Therefore, an error message will be displayed.

By doing the above, the taper data can be managed by the NC program, and even if the creator of the NG program and the amount of machining (processor) are different, machining errors are reduced. Further, even if the thickness of the workpiece changes while the NC program is being executed, it can be adequately coped with and accurate taper processing can be performed. Furthermore, if used in conjunction with the NC editing function that stops and changes the program during electrical discharge machining, taper data during machining can be easily changed.

By the way, at 51 in FIG. 1, T-W data and T-
If PROG data is not stored in the memory of the NC device, T-W data or T-'FROG
It is determined whether the data is written in the NC program (55). At this time, T-W data, T-PROG
If at least one of the data is written in the NC program, that T-W data or T-P
Execute taper calculation based on ROG data (S4
, S2), the subsequent processing is the same as that described in F.

[Effects of the Invention] According to the present invention, it is possible to easily input TW data and T-PROG data, and there is no problem caused by forgetting to input the data.

[Brief explanation of the drawing]

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

Claims (1)

[Claims] At least one of the workpiece thickness data and the height data from the table surface to the program surface is read from the NC program, and the read data is used as taper machining data for electric discharge machining. Wire cut electrical discharge machine.