Vibration tester for ball bearings and associated devices
US4729239A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1986 |
| Grant date | Mar 8, 1988 |
| Priority date | — |
| Expiry date | Dec 19, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2696
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.