Punch and die set and method adapted to effect parting between a

Details Punch and die set and method adapted to effect parting between a Punch and die set and method adapted to effect parting between a

1988-09-14

1991-01-01

Phan, Hien H.

Cutting

Processes

With reorientation of tool between cuts

83 49, 83636, 83694, 83916, B26D 108

Patent

active

049810588

ABSTRACT:
An apparatus and a method are disclosed, in which a shear and die set is adapted to be used in a numerically-controlled turret punch press for separating adjacent portions of a workpiece along predetermined parting lines, the shear and die set having a lower shearing or cutting edge on a vertical side of the shear portion of said set which is reciprocated vertically in shearing proximity to an upper cutting or shearing edge of a vertical wall of the die portion of said set, so that only a partial shear is effected for any reciprocation, and advancing the workpiece during the reciprocation so that a stepwise cut is effected along the entire length of said predetermined parting line and separation of the workpiece along said predetermined parting line is obtained.

REFERENCES:
patent: 3489049 (1970-01-01), Krynytzky et al.
patent: 3877332 (1975-04-01), Roch
patent: 4250784 (1981-01-01), Bredow
patent: 4393570 (1983-07-01), Frick et al.
patent: 4674373 (1987-06-01), Kuppinger
patent: 4696211 (1987-09-01), Bitzel
patent: 4738173 (1988-04-01), Kiuchi

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