Precision clamping device with digitally programmable load

Details Precision clamping device with digitally programmable load Precision clamping device with digitally programmable load

1996-09-06

1998-09-22

Watson, Robert C.

Work holders

With fluid means

Cylinder-piston means directly moves jaw

269329, B25B 118

Patent

active

058103406

ABSTRACT:
A linear actuator is used to push a spring-loaded ram. The loading force of the spring against a stationary workpiece is calibrated with the displacement of the ram once the load exceeds the spring preset value. At a preset loading position, an electrical contact opens, indicating that the spring load has reached or exceeded the preset value. A mechanical stop, acting in conjunction with the stall characteristics of the linear actuator, prevents the operating range from being exceeded. This device has applications where precise standoff from a surface, the application of a precise force to that surface, and a controlled rate of the application of the force is needed.

REFERENCES:
patent: 4076227 (1978-02-01), Rameson
patent: 5279493 (1994-01-01), Halder
patent: 5707051 (1998-01-01), Tsuji

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