PURPOSE: To enable uniform machining of a metal mold by a method wherein the setting of the angle of sending direction of a machining electrode and the aligning of the position of the electrode with that of a body to be machined are performed freely by the rotation and elevation of a machining head and by the rotation and the longitudinal and lateral motion of a machining table.
CONSTITUTION: A machining head support part 15 is supported rotatably by a driving part 16 for head rotation. An elevating block 17 whereon the driving part 16 is placed is supported by a column 19. The rotation driving part 22 of a machining table 21 is placed on the 1st table 23 moving the driving part 22 to the lateral direction, while the 1st table 23 is placed on the 2nd table 24 moving the table 23 longitudinally. Moreover, the 2nd machining head 26 is provided at the tip of the spindle 12 of a machining head 11, whereby the smooth electrospark machining can be applied to the corner pary of a body 10 to be machined.
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HIRANO KOUICHI
FUTAMURA SHIYOUJI
INST TECH PRECISION ELECT