Machine for spark erosion cutting with a guide-arm crossing the

Details Machine for spark erosion cutting with a guide-arm crossing the Machine for spark erosion cutting with a guide-arm crossing the

1991-06-03

1992-05-05

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

219 6914, B23H 702

Patent

active

051110164

ABSTRACT:
A workpiece (1) is clamped onto a compound rest table (5) and machined by a tool electrode (2) running tensioned between two electrode guides (10, 11). A container (18) holds the working liquid into which a working zone (9) of the workpiece (1) is immersed. The lower electrode guide (1) is supported on the stand (4) of the machine by means of a guidearm (13). The guide-arm (13) crosses the back wall (19) of a container (18) at a right angle in an opening (21a) covered by a sliding closing piece (22) that is parallel to the back wall (19) of the container (18). The guide-arm (13) crosses the closing piece (22) of the container (18) at a right angle in another opening (24) where it is slidable. The closing piece (22) is arranged at the outside of the container (18) on a side (26) of the back wall ( 19) facing the stand (4). On the compound rest table (5) the lower slide (7) is rigidly connected to the closing piece (22), preferably by a duct (28), and in relation to the stand (4) it can be moved only parallel to the longitudinal axis (15) of the guide-arm (13) whereas in relation to the lower slide (7) the upper slide (6) can only be moved at a right angle to the longitudinal axis (15) of the guide-arm (13).

REFERENCES:
patent: 4565915 (1986-01-01), Girardin
patent: 4647747 (1987-03-01), Goto
patent: 4808786 (1989-02-01), Shinkai et al.
patent: 4918279 (1990-04-01), Babel et al.
patent: 4992640 (1991-02-01), Tanaka et al.
patent: 5028757 (1991-07-01), Aramaki et al.

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