In-process machine gage

Details In-process machine gage In-process machine gage

1991-02-19

1992-03-31

Cuchlinski, Jr., William A.

Geometrical instruments

Distance measuring

Opposed contacts

33806, 335551, 335552, 33797, G01B 500

Patent

active

050995855

ABSTRACT:
An in-process gage is disclosed utilizing a four bar linkage system having a floating bar in the form of a bellcrank with an active feeler connected to the bellcrank and engageable with the workpiece surface. A fixed feeler is attached directly to the gage body. Movement of the active feeler to stay in contact with the workpiece surface as it is machined results in motion of the bellcrank relative to the gage body. This motion is transferred to an electronic position sensing transducer producing an electrical signal representing the workpiece size used to control the machining process. The four bar linkage system provides for precise rotation of the active feeler with virtually zero backlash enabling a gage to be constructed that is relatively thin to fit into narrow working envelopes.

REFERENCES:
patent: 2018384 (1935-10-01), Schoof
patent: 3470617 (1969-10-01), Wilson
patent: 3688411 (1972-09-01), Asano et al.
patent: 3846916 (1974-11-01), Moriya et al.
patent: 4614038 (1986-09-01), Fivaz et al.
patent: 4625413 (1986-12-01), Possati et al.
patent: 4651430 (1987-03-01), Vasku
patent: 4881324 (1989-11-01), Khinchuk

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