Vibration tester for ball bearings and associated devices

Details Vibration tester for ball bearings and associated devices Vibration tester for ball bearings and associated devices

1986-12-19

1988-03-08

Levy, Stewart J.

Measuring and testing

Vibration

By mechanical waves

73660, G01M 1304

Patent

active

047292393

ABSTRACT:
The invention is directed to a miniature ball bearing tester which detects vibrations therefrom when such a bearing is rotated by a rotor. The device includes a base upon which are supported reeds. The reeds support an upper housing tooling which includes a bearing support for mounting a bearing thereon for rotation. A rotor is attachable to a bearing mounted on the upper tooling. The rotor is then driven to rotate the bearing and upon a defect being detected, the reeds are as a result forced to move in a direction radial with respect to the axial direction of the bearing. An accelerometer picks up the movement and the signal therefrom is then band pass filtered, integrated to obtain a velocity measurement and output by, for example, a speaker to detect any frequencies resulting from a flaw in the miniature bearing.

REFERENCES:
patent: 2468648 (1949-04-01), Abbott et al.
patent: 3677072 (1972-07-01), Weichbrodt et al.

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