Method and device for inserting a rotor, in particular a motor vehicle wheel, which is rotatably mounted on an unbalance machine and can be driven by means of an electric motor
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United States of America Patent
Stats
-
Dec 7, 2004
Grant Date -
Jun 26, 2003
app pub date -
Dec 12, 2002
filing date -
Dec 12, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and a device for moving a wheel rotatably mounted on a wheel balancing machine from a first position at which unbalance compensation has been performed, to a second unbalance compensation position for further unbalance compensation. According to the method, the rotor is externally driven, e.g., by hand, to freely running rotation, at which time, a drive motor is energized to generate a torque which acts counter to the direction of rotation of the wheel and to bring the wheel to a stop over a braking distance brought about by the counter torque which corresponds to the angle of rotation which is traveled over up to the unbalance compensation position, whereupon, the motor is de-energized. The apparatus includes a motor drive including an alternating voltage controller having a longitudinal switching device; and a commutation switching device, the switching devices each including two semiconductor switches which are connected in an anti-serial configuration.
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