Device for measuring the pitch diameter of gears

Details Device for measuring the pitch diameter of gears Device for measuring the pitch diameter of gears

1975-01-22

1976-09-14

Aegerter, Richard E.

Geometrical instruments

Area integrators

Electrical

331795R, G01B 508

Patent

active

039798348

ABSTRACT:
A device for use in measuring the pitch diameter of gears has first and second pin-holding units movable along a straight, inclined pathway with means to lock one unit thereto against movement in a predetermined position relative to a gauge. Each pin extends upwardly from its unit and is backed by a V-shaped projection. A support is adjustable to position a gear in a plane transversely of the exposed ends of the pins with one pin seated between a pair of gear teeth and with a diametrically opposed pair of gear teeth positioned to have the other pin seated between them when the other unit is moved in the appropriate direction. The pins are dimensioned to seat against the pitch line of the teeth against which they are seated with the distance between the pins reflected by the gauge to give the relation of the actual pitch diameter to the ideal.

REFERENCES:
patent: 1281805 (1918-10-01), Metzger et al.
patent: 2295206 (1942-09-01), Fraumann et al.
patent: 2367004 (1945-01-01), Chitwood
patent: 2445402 (1948-07-01), Malmberg
patent: 2623295 (1952-12-01), Orlandi
patent: 2728144 (1955-12-01), Nilsson
patent: 3771229 (1973-11-01), Reef

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