Method and apparatus for grinding a workpiece

Details Method and apparatus for grinding a workpiece Method and apparatus for grinding a workpiece

1996-04-23

1997-10-21

Morgan, Eileen P.

Abrading

Precision device or process - or with condition responsive...

Computer controlled

451 10, 451 11, 451 51, 451246, 451410, B24B 4900

Patent

active

056790538

ABSTRACT:
In a method and apparatus for grinding a workpiece, a rotating workpiece and a rotating grinding wheel are relatively moved toward and away from each other, and at least first and second grinding steps are performed at high and low infeed rates, respectively. Further, back-off grinding is performed between the first and second grinding steps. A target workpiece diameter to be obtained at the end of the back-off grinding is first provided. During the rough grinding, prediction is repeatedly performed to obtain a workpiece diameter which would be obtained at the end of the back-off grinding if the back-off grinding were started instantaneously. The workpiece diameter is predicted taking account of a delay in the movement of the grinding wheel. The back-off grinding is started when it is judged that the predicted workpiece diameter becomes equal to the target workpiece diameter.

REFERENCES:
patent: 4294045 (1981-10-01), Enomoto et al.
patent: 4490946 (1985-01-01), Tsujiuchi et al.
patent: 5076022 (1991-12-01), Ohta et al.
patent: 5371975 (1994-12-01), Lundmark
patent: 5562523 (1996-10-01), Asano et al.
patent: 5562526 (1996-10-01), Yoneda et al.
patent: 5595525 (1997-01-01), Hayashi et al.

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