| 摘要 |
Detecting the deviation of the grinding wheel position from the amount of work deformation after grinding, and correctly adjusting the grinding wheel position, it provides both-side grinding techniques for making the work excellent in flatness and parallelism. When the feeding operation of grinding wheels ( 1, 2 ) is completed, the distances from hydrostatic pads ( 20, 21 ) to the surface and back of work (W) are measured at three points, and the deformation amount of work (W) is detected from the results of measurement at the three points by using air gauge sensors(Sa, Sb, Sc), and in case the calculated amount of deformation exceeds the specified value, the moving adjustment of grinding wheels ( 1, 2 ) is performed in accordance with the amount of deformation so that work (W) is flat without deformation when the feeding operation of grinding wheels ( 1, 2 ) is completed.
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