Punch head for a punch press

Details Punch head for a punch press Punch head for a punch press

1982-07-26

1984-10-23

Bell, Paul A.

Cutting

Means to drive or to guide tool

Plural tools selectively engageable with single drive

83 71, 83916, 83632, 83475, 83523, B26D 508

Patent

active

044781229

ABSTRACT:
A punch press (10) having a punching head (30) which includes a large eccentric crankshaft (42) for operating selected punches (32). The large eccentric crankshaft (42) withdraws the punch (32) into an upper tool support (92) for a relatively large portion of the crankshaft rotation. The crankshaft (42) is connected to a selected punch (32) by a suitable mechanical interposer. The upper tool support (92) is provided to hold a variety of punches (32) and is movable to bring a selected punch (32) into position for being operated by the punching head (30). A mechanism is provided for relative positioning of a workpiece and the punching head (30). Since the punch (32) is withdrawn within the upper tool support (92) for a relatively large portion of the crankshaft (42) rotation the movement of the workpiece can take place while the selected punch is moving but withdrawn within the upper tool support (92).

REFERENCES:
patent: 3603187 (1971-09-01), Bredow
patent: 4126068 (1978-11-01), Bromer
patent: 4241631 (1980-12-01), Salvatore
patent: 4272812 (1981-06-01), Svensson

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