Broach pulling mechanism

Details Broach pulling mechanism Broach pulling mechanism

B - Operations, Transporting

23

D

90/39

B23D 37/00 (2006.01) B23D 41/08 (2006.01)

Patent

CA 1092402

BROACH PULLING MECHANISM ABSTRACT A broach pulling mechanism is provided utilizing puller jaws which engage with a significantly larger circumferential groove at the end of the broach to pull the broach through a workpiece without any vertical drop of the broach in the puller mechanism during any part of the broaching operation. To accomplish this a piston assembly is mounted at the bottom of the broach pulling mechanism to allow the end of the broach to bottom thereon. The piston assembly is controllably pressurized to lock a wall of the groove of the broach end between the puller jaws and the piston assembly thereby preventing any movement or dropping of the broach due to a loose fit of the jaws with respect to the groove throughout the entire broaching operation.

311066

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