Apparatus and method for measuring amount of projection of...

Details Apparatus and method for measuring amount of projection of... Apparatus and method for measuring amount of projection of...

2006-06-27

2006-06-27

Pham, Hoa Q. (Department: 2877)

Optics: measuring and testing

Surface roughness

C356S609000, C451S008000, C451S541000

Reexamination Certificate

active

07068378

ABSTRACT:
A camera unit is arranged opposite a grinding surface. While moving the focal position of the camera unit in a direction perpendicular to the grinding surface relative to the grinding surface of the grinding tool, a control unit causes the camera unit to pickup images of the grinding surface at a plurality of focal positions. Then, an already prepared basic image pattern of abrasive gains is compared with the image data obtained at the plurality of focal positions by the image pickup operation. As a result of the comparison, image data approximate to the basic of the focal position at which the detected image data was obtained.

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K. Yokokawa, et al., “CBN Wheel Grinding Work Technology”, Kogyo Chosakal, Nov. 1998, 7 pages.

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