Machine tool

Details Machine tool Machine tool

1973-09-12

1976-04-06

Schran, Donald R.

Cutting

Means to drive or to guide tool

With means to connect or disconnect tool and its drive

83530, 234116, 83590, B26D 510

Patent

active

039481352

ABSTRACT:
A machine tool comprising a frame, a plunger mounted on the frame for carrying a work engaging tool, a way in said plunger for receiving a reciprocating ram, a punch block, a linkage for selectively inserting said punch block between the ram and the plunger so as to cause the ram to drive said plunger toward a work support, a bolt mechanism carried by said ram for selective operative engagement with said plunger to pull said plunger away from said work support only after said plunger has been driven toward said work support by said ram, camming surfaces on said plunger and said bolt for selectively disengaging said bolt from said plunger upon subsequent movement of said ram toward the work support, and a single stroke mechanism in said linkage to automatically withdraw said punch block after the driving of the plunger toward the work support whereby subsequent continued reciprocation of said ram will not drive said plunger unless said linkage is again actuated.

REFERENCES:
patent: 650692 (1900-05-01), Scharfl
patent: 1856175 (1932-05-01), Towle
patent: 2062692 (1936-12-01), Yates
patent: 2640541 (1953-06-01), Yates

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