Method of determining clamping force

Details Method of determining clamping force Method of determining clamping force

1982-09-27

1986-07-29

Krass, Errol A.

Boots, shoes, and leggings

7386238, 7386269, G06F 1520

Patent

active

046033955

ABSTRACT:
A method for selecting the proper clamping force to be applied by a rotatable chuck against a workpiece of known rigidity comprises the steps of inserting a transducer of known rigidity into a chuck of known rigidity, measuring the clamping force under conditions of a stand-still and rotation to obtain a change in clamping force induced by rotation, and multiplying the change of force by a correction factor involving the foregoing rigidities to obtain a predicted change of clamping force which would be experienced upon insertion of the workpiece in the chuck. The predicted change in clamping force enables an operator to select a sufficient amount of clamping force for safely retaining a workpiece in the chuck during rotation.

REFERENCES:
patent: 3681982 (1972-08-01), Hiratsuka et al.
patent: 3940992 (1976-03-01), Jost et al.
patent: 4110829 (1978-08-01), Boys
patent: 4232547 (1980-11-01), Kasper
patent: 4333351 (1982-06-01), Bickford
patent: 4397196 (1983-08-01), Lemelson
patent: 4400785 (1983-08-01), Wallace et al.
patent: 4471444 (1984-09-01), Yee et al.

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