Cutting – Two tool pairs – driver for one pair moves relative to driver... – One tool support acts as driver for other
Patent
1991-05-20
1992-12-15
Yost, Frank T.
Cutting
Two tool pairs, driver for one pair moves relative to driver...
One tool support acts as driver for other
83197, 83200, 83518, 83599, 83609, 83821, 83859, B26D 900
Patent
active
051706890
ABSTRACT:
A metal working machine (10) is disclosed according to the preferred form including a punching station (48) associated with a first crank arm (18) pivotably mounted to the frame (12) by a first pivot pin (20) and including multiple shearing stations (50a-e) associated with a second crank arm (26) pivotably mounted to the frame (12) by a second pivot pin (28). A link (36) has its opposite ends pivotably mounted by pivot pins (38, 40) to the first and second crank arms (18, 26), respectively. An expandable and contractable actuator (42) having its opposite ends pivotably mounted by pivot pins (44, 46) to the first and second crank arms (18, 26) simultaneously pivots the crank arms (18, 26) about the first and second pivot pins (20, 28) in opposite directions. The pivot pins (20, 28, 38, 40, 44, 46) are spaced from and parallel to each other. The force is transferred to the crank arm (18, 26) associated with the working station (48, 50a-e) being utilized by the actuator (42) directly pushing on that crank arm and by the link (36) acting through the other crank arm being pivoted in the opposite direction by the actuator (42). In the preferred form, a wing (60) and an arcuate ear (62) are integrally formed with and in the plane of the second crank arm (26) and extend beyond the shearing edges (56, 58) of the shearing station (50e). The wing (60) is spaced from the second pivot pin (28) and the arcuate ear (62) extends concentrically around the second pivot pin (28).
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Dexter Clark F.
Yost Frank T.
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