JP2733327B2 - Method of selecting machining method of NC wire electric discharge machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to a method for selecting a machining method of an NC wire electric discharge machine.

(Prior art) In recent years, in CN wire electric discharge machines, in order to reduce machining time and improve machining accuracy, machining energy is gradually reduced, offset is changed, and machining is repeated twice or three times. Multiple processing methods are often used. In this multiple processing method, various processing methods are appropriately selected according to processing conditions.

For example, in the case where all three holes as shown in FIG. 2 are subjected to multiple machining, the machining perimeter of each of the holes (1), (2) and (3) is long, so that the machining is performed for a long time, and the temperature changes. May be expected. In such a case, first, the holes (1), (2), and (3) are processed by the primary processing (rough processing), and then the secondary processing, the tertiary processing, and the like (finishing) are performed. Processing) is performed for each figure, and processing is performed in a short time.

Further, when the processing perimeter of each of the holes (1), (2), and (3) is short and the distance between the holes is large, rough processing to finishing processing is performed for each figure from the viewpoint of processing efficiency. The method of performing up to is adopted.

As described above, in the multiple machining, different machining orders can be considered even for the same machining shape, and the operator has to appropriately change the NC program according to the machining method.

(Problems to be Solved by the Invention) As described above, in the multiple machining method, various machining methods are appropriately selected according to the machining situation, and at that time, the operator appropriately changes the NC program according to the machining method. It was necessary and burdened the workers. The present invention has been devised in view of such a point, and a primary operation only for roughing, a secondary operation only for finishing,
3rd processing, 1st, 2nd from roughing to finishing
An object of the present invention is to provide a machining method of an NC electric discharge machine capable of coping with various machining methods such as total machining including next and tertiary machining.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a control device for an NC wire electric discharge machine that performs multiple machining, a total key, a first key, and a recut key. When the total key is selected, the primary processing, the secondary processing, the tertiary processing, and the like are sequentially performed. When the first key is selected, only the primary processing is performed, and when the recut key is selected, The processing after the second processing is performed.

(Operation) With this configuration, when performing multiple machining such as primary machining, secondary machining, and tertiary machining for one figure, the total key provided in the control device is selected. If only the primary machining is to be performed, the first key is selected in the same manner, and if the secondary machining or later is performed, the recut key is selected in the same manner. it can. That is, without changing the NC program, the operator can select various machining methods of the multiple machining according to the machining situation.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the flowchart of FIG. This flowchart shows the flow of the procedure up to the third processing for one figure. First, in step 1 (hereinafter referred to as S1), a total key (represented by T), a fast key (represented by F), and a recut key (represented by R) are selected. When the T key or the F key is selected, the process proceeds to the primary machining in S2. When the R key is selected, the presence or absence of a finish machining instruction is checked in S3. Proceed to. If there is no instruction, no finishing is performed.

In the primary processing of S2, as shown by a dotted line, automatic supply of wire electrodes is performed, offset and processing conditions are set, and after a processed figure is shown, processing is performed along with the figure. When the primary machining is completed, it is checked in S4 whether or not only the primary machining is performed. If the F key is selected, that is, if only the primary machining is performed, the machining of this hole is completed. If the T key has been selected, the process proceeds to the secondary processing in S5. Even when the R key is selected as described above, if the primary processing has been completed, the process proceeds to S5.

In the secondary processing of S5, as in the above-described primary processing, the automatic supply of the wire electrode is performed, and the offset and the processing conditions corresponding to the secondary processing are automatically changed, and then the definition is performed. Processing is performed according to the figure (the same figure as the first processing). When the second processing is completed, the process proceeds to the third processing in S6. In this tertiary processing, as in the above-described first and second processing, the automatic supply of the wire electrode, the offset and the processing conditions corresponding to the tertiary processing are automatically changed, and the defined figure (first The processing is performed along the same figure as the processing).
When the third machining is completed, the machining procedure ends.

When the first processing is completed while the first key is selected as described above, the processing of this hole is completed. However, if the primary processing remains in another figure, the processing is performed. Proceed to. When the recut key is selected, and when there is no instruction for finish processing, the process proceeds to processing of another figure as described above.

[Effects of the Invention] As can be understood from the above description, the present invention has the configuration described in the claims, so that only primary processing (rough processing) and second processing are performed by key operation. It is possible to cope with various processing methods such as multiple processing in which only tertiary processing or the like (finishing processing) is performed gradually, primary processing, secondary processing, tertiary processing, or the like is performed continuously. Further, since the program is not changed as in the related art, the work can be performed quickly, and problems due to a mistake in changing the program can be avoided.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a processing procedure such as multiple processing for one figure in an embodiment of the present invention. FIG. 2 is an explanatory diagram of a case where a plurality of figures are multi-processed.

Claims (1)

(57) [Claims] 1. A control device for an NC wire electric discharge machine which performs multiple machining is provided with a total key, a first key, and a recut key. When the total key is selected, a primary machining, a secondary machining, and a third machining are performed. NC wire electric discharge machining characterized by performing the next machining, etc. sequentially, performing only the first machining when the first key is selected, and performing the second and subsequent machining when selecting the recut key. How to select the processing method of the machine.