Drawing apparatus of the double action and lower punch slide typ

Details Drawing apparatus of the double action and lower punch slide typ Drawing apparatus of the double action and lower punch slide typ

1984-12-05

1986-10-07

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72354, 72456, 100269R, B21D 2200

Patent

active

046152040

ABSTRACT:
In a drawing apparatus of the type in which a lower punch slide moves upward to draw a blank clamped between a movable die and a stationary blank holder, an adjustable ram is provided which is electrically driven to move upward and downward for thereby adjusting the bottom dead position of the punch so that the upper end of the punch is made substantially flush with the upper end surface of the blank holder when the punch is in its bottom dead position.

REFERENCES:
patent: 1768504 (1930-06-01), Byerlein
patent: 2102842 (1937-12-01), Glasner
patent: 2248186 (1941-07-01), Oeckl
patent: 2975701 (1961-03-01), Menschaeur
patent: 3673849 (1972-07-01), Bogdan

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