Perforator for metal plate

Details Perforator for metal plate Perforator for metal plate

1997-04-25

1999-11-30

Peterson, Kenneth E.

Cutting

Processes

Blanking

83686, 72334, B26F 114

Patent

active

059922800

ABSTRACT:
A perforator for presensitized plate has plural punches and a die array cooperating with the punches. A stripper plate retains the plate adjacent the die array when punches separate from the die array after the punches form punched holes in the plate. The punches and/or the die array is coated with non-crystalline hard carbon. The punched holes are formed in the plate. In a preferred embodiment, the coating of the punches and/or die array has a surface whose roughness is 0.8 .mu.m or less. A clearance defined between the punches and the die array is 10 to 30% of the thickness of the plate. Each advancing end of the punches is provided with a cylindrical tip portion of lesser width than the rest of the punch. The stripper plate is provided with a cushioning material mounted for contact with the plate.

REFERENCES:
patent: 389404 (1888-09-01), O'Neill
patent: 770239 (1904-09-01), Lovejoy
patent: 927311 (1909-07-01), Anderson
patent: 1166613 (1916-01-01), Mackle
patent: 2017195 (1935-10-01), Anderson et al.
patent: 2369896 (1945-02-01), Harris et al.
patent: 2372011 (1945-03-01), Remington et al.
patent: 2763325 (1956-09-01), Willous
patent: 3125917 (1964-03-01), Smeets
patent: 3143026 (1964-08-01), Akerson
patent: 3189238 (1965-06-01), Sherrill
patent: 3350972 (1967-11-01), McKee
patent: 3642522 (1972-02-01), Gass et al.
patent: 3724305 (1973-04-01), Kondo
patent: 3777601 (1973-12-01), Strandell
patent: 3889563 (1975-06-01), Westermann
patent: 3968674 (1976-07-01), Ishida
patent: 4143569 (1979-03-01), Marconi
patent: 4158578 (1979-06-01), Komatsu et al.
patent: 4526077 (1985-07-01), DeGuvera
patent: 5235881 (1993-08-01), Sano et al.
patent: 5410927 (1995-05-01), Omata et al.
patent: 5412972 (1995-05-01), Congelliere
patent: 5443195 (1995-08-01), Sinn
patent: 5492001 (1996-02-01), Sasaki et al.
patent: 5816093 (1998-10-01), Takeuchi et al.

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