Wire EDM with apparatus supporting a workpiece through wall of m

Details Wire EDM with apparatus supporting a workpiece through wall of m Wire EDM with apparatus supporting a workpiece through wall of m

1989-08-24

1990-10-02

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

B23H 702

Patent

active

049609718

ABSTRACT:
In a wire EDM a workpiece holder has a fluid tight chuck unit connected to a rotation shaft for rotational movement while supporting the workpiece during a machining operation. A cover member and a seal between the cover member and a wall of the machining bath or tank are used to prevent leakage of the machining liquid. A drive system rotates the shaft under the control of a CPU with a rotation speed detector and a rotation angle detector providing feedback information. Optionally the rotational shaft can extend obliquely into the bath.

REFERENCES:
patent: 2557301 (1951-06-01), Lundy
patent: 2698185 (1954-12-01), Sloan
patent: 2825572 (1958-03-01), Sloan et al.
patent: 3682491 (1972-08-01), Sakazaki et al.
patent: 4547646 (1985-10-01), Briffod
patent: 4628172 (1986-12-01), Inoue
patent: 4647747 (1987-03-01), Goto
patent: 4685687 (1987-08-01), Hall et al.

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