G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 13/02 (2006.01) F16H 55/17 (2006.01)
Patent
CA 2511126
A forced harmonic vibration master gear for use in a device for detecting imperfections in a production gear includes a gear body having a plurality of gear teeth. Each of the plurality of gear teeth has a graduation of material added thereto extending from a form diameter of each tooth to an end of the tooth to decrease the pressure angle of the tooth. The forced harmonic master gear when used to test an unacceptable production gear, induces in the unacceptable production gear, when rotating, a vibrational force that is at least 50 percent greater than a vibrational force exhibited by the unacceptable production gear when a standard master gear is used to test the unacceptable production gear, in at least one band of 70 Hz to 150 Hz, 151 Hz to 300 Hz, 301 Hz to 550 Hz, 551 Hz to 1250 Hz and 1251 Hz to 2000 Hz. When the forced harmonic master gear is used to test an acceptable production gear, the acceptable production gear, when rotating, exhibits a vibrational force that is no more than 25 percent greater than a vibrational force exhibited by the acceptable production gear when a standard master gear is used to test the acceptable production gear.
Finlayson & Singlehurst
Illinois Tool Works Inc.
LandOfFree
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