Method and device for grinding metal annular member

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United States of America Patent

PATENT NO 9914194
SERIAL NO

14758130

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Abstract

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Provided is a grinding method capable of preventing variation in the outer diameter of a processed object 1 at the completion of grinding regardless of change in the amount of elastic deformation of the processed object 1 based on the change in the cutting ability of a grindstone 4. The outer diameter D of the processed object 1 during grinding is measured by gauge heads 5 in process. Plural target values Di that differ from each other are set for the outer diameter D of the processed object 1, and first threshold values are set for the rate of change of the outer diameter D of the processed object for each of these target values Di. Spark out is started when the outer diameter D of the processed object 1 becomes equal to a target value Di and the absolute value of the rate of change v is greater than a first threshold value that corresponds to the target value Di.

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Patent Owner(s)

  • NSK LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ebina, Takeshi Fujisawa, JP 3 2
Ogasahara, Tomoki Fuijsawa, JP 1 2
Ozawa, Mitsuharu Fujisawa, JP 3 52

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