Method and apparatus for the manufacture of rotary sheet dies

Details Method and apparatus for the manufacture of rotary sheet dies Method and apparatus for the manufacture of rotary sheet dies

1988-06-17

1989-08-29

Parker, Roscoe V.

Metal tools and implements, making

Machines

Die-forming

76107C, 219 6917, 219 692, B23H 904

Patent

active

048606162

ABSTRACT:
A rotary sheet die suitable for use in the cutting of paper webs and the like is manufactured by securing the sheet to a hollow mandrel using mechanical clamps and internal vaccum. The mandrel and sheet assembly is then placed in an EDM apparatus in which vertical movement of the electrode is gear synchronized with the rotary movement of the mandrel and sheet combination. Chilled dielectric fluid is used to flush and cool the electrode and sheet die interface.

REFERENCES:
patent: 3542993 (1970-11-01), Buck
patent: 3796851 (1974-03-01), Pfuff
patent: 3890481 (1975-06-01), Buck
patent: 3952179 (1976-04-01), Baker
patent: 4537588 (1985-08-01), Ehlscheid
patent: 4608895 (1986-09-01), Bell et al.

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