Method of controlling drive of driving motor for rotary...

Details Method of controlling drive of driving motor for rotary... Method of controlling drive of driving motor for rotary...

2007-11-28

2009-12-22

Barnes-Bullock, Crystal J (Department: 2121)

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

C074S81300L, C074S81300L, C700S193000, C318S039000, C318S433000, C269S073000

Reexamination Certificate

active

07634955

ABSTRACT:
A method of controlling drive of a driving motor for a rotary indexing device is provided. The device includes an indexing mechanism that indexes an angular position of a circular table by rotating the circular table with the use of the driving motor as a driving source, a clamping mechanism that holds the indexed angular position, and a control unit that controls drive of the driving motor by position control. In the method, the control unit controls the drive of the driving motor during operation of the clamping mechanism with a content of control in which an output torque of the driving motor by the position control becomes smaller than an output torque by the position control during indexing of the angular position of the circular table for an equivalent positional deviation.

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patent: 08255022 (1996-10-01), None

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