Method of stopping an electric motor-driven balancing machine main shaft
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United States of America Patent
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-
Jun 1, 1999
Grant Date -
N/A
app pub date -
Sep 4, 1997
filing date -
Sep 6, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of stopping an electric motor-driven balancing machine main shaft after an unbalance measuring run in a specific rotary angle stoppage position corresponding to a desired balancing rotary angle position provides that in the course of retardation of the main shaft, a timer is switched on at a short angular spacing of for example 3.degree. before the main shaft reaches the desired rotary angle stoppage position. The timer predetermines a time interval which is determined from the rotary speed and the rotary angle position of the main shaft at the time of the timer being switched on, with the retardation operation being stopped at the end of that time interval, with the main shaft stationary. The retardation operation can be effected by torque reversal of the motor.
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