| 摘要 |
PCT No. PCT/JP80/00112 Sec. 371 Date Jan. 29, 1981 Sec. 102(e) Date Jan. 29, 1981 PCT Filed May 27, 1980 PCT Pub. No. WO80/02665 PCT Pub. Date Dec. 11, 1980.Herein disclosed is an electric discharge machine, by which, after the machining operation of a workpiece by an electrode has reached a predetermined position, the machining operation is further accomplished while rocking the electrode in a plane generally normal to the feeding direction of the workpiece for the machining operation. The workpiece has its respective portion uniformly machined by effecting the machining operation accompanied by the rocking motions for a preset period, e.g., either for a predetermined time period or a predetermined number of the rocking motions so that the precision of the finishing operation can be improved.
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