Method and system of testing gear teeth of circular spacing of g

Details Method and system of testing gear teeth of circular spacing of g Method and system of testing gear teeth of circular spacing of g

1988-03-30

1989-06-27

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33556, 33833, G01M 1302

Patent

active

048416444

ABSTRACT:
With the gear wheel (23) stopped, a testing head (13) is sequentially introduced into tooth gaps to measure adjacent teeth (FIG. 1a), sequentially, by sensing and recording the position of engagement of the measuring head with tooth flanks at a predetermined measuring circle, for example the pitch circle; the measuring head can move, with respect to the gear wheel, in X and Y vectorial directions, and if it is desired to also measure profile and/or inclination of inclined or spiraled gears, in the Z vectorial direction. The measuring head is moved from tooth gap to tooth gap until the end of a scanning range is reached. At that point, a control apparatus (24) rotates the gear wheel to place the last measured flank at least approximately at an initial measuring or reference position, so that the testing head can remeasure the last measured flank, thus determining the position of the gear wheel, and proceed with the next measuring cycle from tooth gap to tooth gap, while measuring the flanks. The various cycles will repeat until the gear wheel has rotated through a complete revolution. The measuring head (13) can remain in the tooth gap of the last measured flank upon rotation of the gear wheel to the reference position or can be withdrawn, and be moved independently, and simultaneously upon rotation of the gear wheel. All measurements are carried out while the gear wheel is stopped.

REFERENCES:
patent: 4519242 (1985-05-01), Hofler et al.
patent: 4610091 (1986-09-01), Bertz et al.
patent: 4645566 (1987-03-01), Hofler
patent: 4646443 (1987-03-01), Hofler

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