Rotational positioning device

Details Rotational positioning device Rotational positioning device

1988-11-09

1990-02-13

Watson, Robert C.

Work holders

Holder mounted for movement

With indexing steps

B23Q 318

Patent

active

048999989

ABSTRACT:
A rotational positioning device of this invention comprises a rotary table for supporting a work, a servo motor including a rotor which secures the rotary table, a rotational angle detecting means for detecting the rotational position of the rotary table, and a brake mechamism for braking the rotation of the rotary table. The servo motor, rotational angle detecting means, and brake mechanism are accommodated in a casing. The rotary table is directly driven by the servo motor without intervention of a speed reducer. Accordingly, the device is small in size and easy to handle, is capable of high-speed rotational positioning and very accurate positioning, and provides a high degree of safety because the brake mechanism is built in.

REFERENCES:
patent: 4749067 (1988-06-01), Stevens

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