Test method and testing device for detecting any faults, or inac

Details Test method and testing device for detecting any faults, or inac Test method and testing device for detecting any faults, or inac

1989-09-29

1991-05-21

Cuchlinski, Jr., William A.

Measuring and testing

Toothed gear

3350113, 3350119, G01M 1302

Patent

active

050164716

ABSTRACT:
A method for detecting faults, or inaccuracies in a test object which is a splined wheel having teeth of substantially similar shape, or in an object having a similarly shaped toothed profile, including rolling the test object against a counter splined wheel of a testing device with similarly formed teeth, which testing device includes a plurality of gauging elements which are introducible into the spaces between the two teeth of the test object, each gauging element having a curved testing cross-section engageable in the spaces between the test object teeth, the radius of the testing cross-section of the gauging elements is selected relative to the structure and shape of the teeth of the test object so that the testing cross-section rests on the test object tooth flanks at points between the top and the base of the tooth, alternately only one of the testing cross-sections, then two of the testing cross-sections, then again only one of the testing cross-sections and so as, is introduced in the spaces between the test object teeth or teeth of a master reference object, the differences between the insertion depths when only one of the testing cross-sections is inserted and when two of the testing cross-sections are inserted, are measured and recorded by determining a corresponding change in the distance (a) between the axes of rotation of the counter splined wheel and test object, the above mentioned procedure being performed continuously due to rotation of a roller wheel, or a corresponding testing device, which includes a number of testing cross-sections.

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patent: 4790074 (1988-12-01), Warr et al.
patent: 4793067 (1988-12-01), Reimar et al.

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