Apparatus for electrical discharge machining of cylindrical work

Details Apparatus for electrical discharge machining of cylindrical work Apparatus for electrical discharge machining of cylindrical work

1978-06-30

1980-10-28

Kozma, Thomas J.

Electric heating

Metal heating

Cutting or disintegrating

219 69P, B23P 102

Patent

active

042309271

ABSTRACT:
Disclosed are a process and apparatus for electrical discharge machining of the outer surface of a satinizing roll to produce a satin-like roughened surface of a uniform roughness. This electrical discharge machining process produces a uniform satin-like roughened surface on the outer surface at each end of the roll, and for this purpose the process involves a step of decreasing the discharge current in proportion to decrease in the area which is to be worked by an electrode located at the roll end and thereby maintaining the flow of current per unit area at a constant value. The apparatus for performing the process comprises position detecting-means for detecting that the electrode has been moved to the roll end, and means responsive to the output signal of the position detecting means to control the off-time of current pulse which causes a discharge between the electrode and the roll.

REFERENCES:
patent: 3600546 (1971-08-01), Osaka et al.
patent: 3878353 (1975-04-01), Anderson
patent: 3941970 (1976-03-01), Grow
patent: 4004123 (1977-01-01), Inoue

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