Apparatus and method for on site testing of involute axle gear p

Details Apparatus and method for on site testing of involute axle gear p Apparatus and method for on site testing of involute axle gear p

1990-10-15

1992-07-28

Will, Thomas B.

Geometrical instruments

Gauge

Tooth testing

3350114, 3350118, G01M 1302, G01B 520

Patent

active

051331349

ABSTRACT:
The apparatus for measuring the parameters of an axle gear includes an attachment mechanism for providing a surface parallel to the gear axis and positioned at a distance equal to the base circle radius from the gear axis. A displacement measuring device is positioned with the flat lower surface in contact with the attachment mechanism surface. Extending from the side of displacement measuring device is a probe, the probe positioned to be in the same plane as the flat lower surface and extending parallel to the axis of the gear. The probe of the displacement measuring device is placed in contact with a surface of a gear tooth and the displacement device is rotated without slipping on the attachment mechanism surface. When the displacement measuring device is rotated, the probe will be displaced only within preselected limits when in contact with a gear tooth surface between the top of the tooth and the root of the tooth for an acceptable gear. The displacement mechanism can include a projection for contacting a predefined surface of the attachment mechanism which will prevent slipping of the displacement measuring device on the attachment base circle radius during rotation. An extension can be coupled to the displacement measuring device to provide a second probe for block span measurements.

REFERENCES:
patent: 1567134 (1925-12-01), Gosnell
patent: 1601038 (1926-09-01), Orcutt
patent: 1753014 (1930-04-01), Logue
patent: 2909844 (1959-10-01), Wagner
patent: 3237442 (1966-03-01), De Vos
patent: 3877150 (1975-04-01), Hofler
patent: 4137642 (1979-02-01), Halvarsson

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