Tool for transforming work pieces

Metal deforming – With means to drive tool – Including pneumatic- or fluid-actuated tool support

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Details

7245302, 72449, 72454, 724524, B21J 918

Patent

active

057201994

ABSTRACT:
A pressing tool for transforming workpieces includes a first fixed position die for transforming the workpiece. A second die cooperates with the first die in transformation of the workpiece, and the second die is coupled to and movable in response to operation of a forward feed device. The forward feed device comprises a rough feed device for relatively rapidly moving the second die toward the workpiece, and a fine feed gear for relatively slowly moving the second die toward the workpiece. The fine feed gear is coupled to and movable with the rough feed device. The forward feed device causes control over movement of the forward feed device to be shined from the rough feed device to the fine feed gear upon engagement of the second die with the workpiece.

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patent: 4932237 (1990-06-01), Hatfield
patent: 4967586 (1990-11-01), Hecht
patent: 5253572 (1993-10-01), Uehara et al.

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