Patent Number: 6,250,142

Title: Waviness measurement

Abstract: A method and apparatus for measuring the waviness of surfaces of, for example, bearing parts involves the use of a control element that is rotatably applied against a surface of the object to be measured. The control element has a similar geometry to the final bearing component and is placed in a hydrostatic pocket, or kept in a bearing arrangement, allowing it to rotate and move freely. The control element is loaded with a substantially constant force and is arranged to be moved rotatably across the surface to be tested. At least one transducer is arranged to monitor the direct movement of the control element or the movement via the pocket, and a signal is created corresponding to the waviness.

Inventors: Goransson; Bo (Goteborg, SE)

Assignee: SKF Nova AB

International Classification: G01B 5/28 (20060101); G01B 7/34 (20060101); G01B 005/28 (); G01B 007/34 (); G01B 013/22 (); G01M 013/04 ()

Expiration Date: 06/26/2018