Method and apparatus for electrical discharge machining

Details Method and apparatus for electrical discharge machining Method and apparatus for electrical discharge machining

1997-05-09

1998-12-08

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6913, 219 6916, B23H 100, B23H 718, B23H 720

Patent

active

058473521

ABSTRACT:
An electric discharge machining apparatus and method are provided first having a data storage for storing initial machining conditions such as a two-dimensional outline path for a machined form, dimensions of the machined form, a feed rate in the axial direction of an electrode for a given movement of the tool electrode in the horizontal direction, and an interval period of inline measurement. In addition, the apparatus measures a machining depth at each interval period of inline measurement. The apparatus also computes machining parameters such as a machining depth for each machining pass, a number of remaining passes of machining which are to be executed, and also increments an outline offset according to the measured machining depth. An electrode position control then provides positional control of a tool electrode according to the computed machining parameters.

REFERENCES:
patent: 3591761 (1971-07-01), Bederman et al.
patent: 4827213 (1989-05-01), Spaude
patent: 4891487 (1990-01-01), Nakata
patent: 5051554 (1991-09-01), Tsukamoto
patent: 5354961 (1994-10-01), Diot et al.

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