Positioning table assembly

Details Positioning table assembly Positioning table assembly

1991-11-15

1993-06-08

Watson, Robert C.

Work holders

Holder mounted for movement

With plural means for changing holder positions

G01B 500

Patent

active

052172147

ABSTRACT:
A positioning table assembly includes a table slidably mounted on a pair of guide rails. The table is divided into a central section and a peripheral section which are connected through a connecting section. A traction shaft of a drive motor extends through a center slot formed in the central section. A piezoelectric device is mounted on the table to displace the central section relative to the peripheral section. When the piezoelectric device is energized, the central section is displaced to establish a frictional contact between the traction shaft in rotation and the central section so that the table may move in either direction depending on the direction of rotation of the traction shaft.

REFERENCES:
patent: 4630942 (1986-12-01), Tsumaki et al.
patent: 4667415 (1987-05-01), Barsky
patent: 4887804 (1989-12-01), Ohtsuka

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