Balance mechanism for a machine having an oscillating member

Details Balance mechanism for a machine having an oscillating member Balance mechanism for a machine having an oscillating member

B - Operations, Transporting

21

D

B21D 55/00 (2006.01) B30B 15/00 (2006.01) B30B 15/28 (2006.01) F16F 15/22 (2006.01) F16F 15/26 (2006.01) G01M 1/30 (2006.01)

Patent

CA 2042101

Three balance mechanisms for a press machine are described. The first balance mechanism for a press machine comprises a balance weight 91 mounted on a crankshaft 86 of the press machine, a balance weight 92 mounted on a balance mechanism shaft 93, a motor for rotating the shaft 93 and a control system for the motor. The control system ensures that the balance mechanism shaft 93 rotates in the opposite direction to, but at the same speed as, crankshaft 86. The balance weights 91 and 92 balance the primary shaking forces which arise in the press machine along the axis of movement of its ram 83. In the second balance mechanism, balance weights are mounted on two separate shafts rotated by a motor and connected by a gear mechanism. In the third balance mechanism, one balance weight is mounted on the crankshaft, another balance weight is mounted on a shaft rotated by a motor, and a further pair of balance weights are mounted on a pair of shafts rotated by a motor at twice crankshaft speed.

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