Measuring and testing – Surface and cutting edge testing – Roughness
Patent
1981-02-09
1984-03-27
Swisher, S. Clement
Measuring and testing
Surface and cutting edge testing
Roughness
33403, G01B 2130
Patent
active
044386460
ABSTRACT:
Surface irregularities on a member (12), such as a main bearing or rod journal of a crankshaft (13), are determined by engaging a template edge (15,28) of a surface gauge (10,24) on the surface. A first side of the gauge (10,24) is subjected to light (19) to enable a worker to detect any light emitted between the surface (11) and template edge (15,28) which will indicate irregularities in the surface (11). The surface (11) is then machined to remove such irregularities. A plurality of such surface gauges (10,10',24) having template edges (15,15',28) of varied lengths, may be provided to the worker in kit form to facilitate the gauging of substantially all journal surfaces (11,22) in an engine, for example. Expeditious gauging of various journal surfaces (11,22) may thus be accomplished with a high degree of quality control.
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"Inspection Gages", p. 111, Feb. 18, 1943 Issue of American Machinist.
Caterpillar Tractor Co.
Swisher S. Clement
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