Mechanical pressing machine having a load fluctuating torque cancelling device
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United States of America Patent
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Aug 13, 1996
Grant Date -
N/A
app pub date -
Oct 25, 1994
filing date -
Oct 26, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a mechanical pressing machine, a flywheel is fixedly mounted on an input shaft, and a drive cam plate is fixedly mounted on the input shaft intermediate opposite ends thereof, and a torque compensation plate cam is mounted on the other end of the input shaft. A cam follower mounted on a distal end of a piston rod of a resilient force-producing device is held in pressing contact with the torque compensation plate cam so as to cancel a load fluctuation produced on the input shaft. The resilient force-producing device employs a compression coil spring or an air spring. With this construction, a periodic inertial load fluctuation, repeatedly produced for every revolution during the operation of the mechanical press, is compensated for by the system for reserving energy, and hence is canceled, thereby balancing the energy, so that variations in rotation of the input shaft are eliminated, thereby reducing vibrations and noises.
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