Spark erosion machining process

Details Spark erosion machining process Spark erosion machining process

1979-05-22

1980-10-21

Kozma, Thomas J.

Electric heating

Metal heating

Cutting or disintegrating

B23P 112

Patent

active

042296366

ABSTRACT:
A process for the spark erosion machining of a workpiece having a cylindrical orifice, formed of any desired cross-section, the invention utilizes an electrode which is moved relative to the workpiece. According to the invention, a first rapid rough shaping pass is performed by descent of the electrode parallel to the generatrices of the orifice. On raising, the electrode is then translated perpendicularly to the generatrices by a distance r and then is lowered at a slower speed and is raised again before performing a circular translation of radius r. The electrode is again lowered and raised, and the operation is repeated n times so as to perform a complete revolution. The present process allows efficient machining of dies for metal extrusion.

REFERENCES:
patent: 3727023 (1973-04-01), Monnich
patent: 4135070 (1979-01-01), Pfau

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