Process and a device for the rotation-angle-monitored tightening

Details Process and a device for the rotation-angle-monitored tightening Process and a device for the rotation-angle-monitored tightening

1993-12-21

1995-12-19

Chilcot, Richard

Measuring and testing

Dynamometers

Responsive to torque

7386221, G02L 302

Patent

active

054760143

ABSTRACT:
The invention relates to a process and a device for the rotation-angle-monitored tightening or loosening of screw connections by means of power driven tools. The absolute rotation angle swept over in the screwing operation with respect to a fixed point about a swivel axis through the rotation axis of the screw connection is measured. An advantageous, relative-position free, absolute measurement of the rotation angle is effected by the use of an absolute rotation-rate measuring sensor. The rotation-rate sensor can herein be configured as a mechanical, compass-like gyroscope, as a rotation sensor or as an acceleration sensor, by means of which a measured value correlated with the absolute rotation angle can be recorded.

REFERENCES:
patent: 5172616 (1992-12-01), Negishi
Database WPI, Derwent Pubications Ltd., London, AN 78-E 5834 A&BE-A, 863 705 (Rockwell) 29 May 1978.

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