Profiling electrical discharge machining apparatus

Details Profiling electrical discharge machining apparatus Profiling electrical discharge machining apparatus

1997-04-28

1998-06-30

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

B23H 100, B23H 726

Patent

active

057737819

ABSTRACT:
An oscillating device is fixed to the lower end of a column of a profiling electrical discharge machining apparatus, and an electrode holder for holding a tool electrode is attached to the oscillating device. The oscillating device is composed of a block formed of a material with suitable elasticity and right- and left-hand piezoelectric elements embedded under a pilot pressure in the block. By alternately driving these piezoelectric elements, the tool electrode is subjected to a motion such that a displacement much smaller than the size of a gap between the tool electrode and a workpiece is repeated during a machining operation with a short period in a predetermined direction and a direction substantially opposite thereto.

REFERENCES:
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patent: 3610865 (1971-10-01), Van Ossenbruggen
patent: 4485286 (1984-11-01), Inoue
patent: 5340959 (1994-08-01), Sawada et al.
Patent Abstracts of Japan, May 31, 1991, JP-A-03 060928.
Patent Abstracts of Japan, Aug. 29, 1990, JP-A-02 152729.
Patent Abstracts of Japan, Sep. 5, 1979, JP-A-03 079897.
Patent Abstracts of Japan, Jun. 24, 1991, JP-A-03 079236.
Microfilm of the specification and drawings annexed to the written application of Japanese Utility Model Application No. 91543/1987.
"3R EDM Tooling" Catalog, pp. 1-47, Unknown Author, Unknown Publication Date.

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