Press punching method and apparatus for forming a plurality...

Details Press punching method and apparatus for forming a plurality... Press punching method and apparatus for forming a plurality...

2005-04-12

2005-04-12

Choi, Stephen (Department: 3724)

Cutting

Processes

With reorientation of work between cuts

C083S039000, C083S076700, C083S248000, C083S530000, C083S550000

Reexamination Certificate

active

06877408

ABSTRACT:
A press punching apparatus makes many holes at the same time and changes an arrangement of the holes without changing a punch block and a die block. A punching mold is provided with a plurality of punches having different lengths. A travel distance of the mold is adjusted so that a first part of the punches penetrates a work piece to be punched in a first stroke. Then, the travel distance of the mold is changed so that the work piece is punched by a second part of the punches other than the first part of the punches in a second stroke.

REFERENCES:
patent: 530560 (1894-12-01), Swaney
patent: 804108 (1905-11-01), Evans
patent: 849312 (1907-04-01), Barnes
patent: 1003993 (1911-09-01), Day
patent: 1380542 (1921-06-01), Drewes
patent: 3194099 (1965-07-01), Palter
patent: 3232156 (1966-02-01), Fuller
patent: 3608413 (1971-09-01), Borello
patent: 3780939 (1973-12-01), Woodie
patent: 3866254 (1975-02-01), Gronda
patent: 4104942 (1978-08-01), Leloux
patent: 4898056 (1990-02-01), Grobb et al.
patent: 4970926 (1990-11-01), Ghajar et al.
patent: 5740712 (1998-04-01), Watkins et al.
patent: 5776579 (1998-07-01), Jessup et al.
patent: 6634271 (2003-10-01), Dal Ceredo
patent: 712644 (1980-01-01), None

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