Apparatus for checking diametral dimensions of mechanical pieces

Details Apparatus for checking diametral dimensions of mechanical pieces Apparatus for checking diametral dimensions of mechanical pieces

1988-05-09

1990-03-13

Cuchlinski, Jr., William A.

Geometrical instruments

Gauge

Internal

335551, 335552, G01B 346, G01B 728

Patent

active

049073451

ABSTRACT:
An apparatus for checking diametral dimensions comprises a resilient protection element, with a substantially tubular shape, for protecting an internal arm-set by preventing any foreign matter, like chips, from entering inside. In order to obtain a protection element that occupies little space and is particularly resistant to wear, blows, chemical etching etc., the element, substantially cylindrical, is made of a lamina of metal--preferably steel for springs, or nickel, or chromium--, or other materials with similar characteristics. Two feelers are placed at diametrically opposite points of the cylindrical element and as a consequence of the lamina flexions move in a diametral direction. The displacement of the feelers is transmitted to a position transducer. The invention mainly applies to plug gauges used in transfer lines for checking small diameter holes.

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