| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a deflection accuracy measuring method for measuring vibration precision while grinding and a grinder for performing contact removal grinding and cutting in accordance with a deflection amount measured. <P>SOLUTION: A displacement changeΔs<SB POS="POST">i</SB>=s<SB POS="POST">0</SB>-s<SB POS="POST">i</SB>at a prescribed angleΘ<SB POS="POST">i</SB>of rotation and a warp changeΔti=t<SB POS="POST">0</SB>-ti being an amount of change of warp are used to calculate a radius size change corresponding to the angleΘ<SB POS="POST">i</SB>of rotation with a surface position s<SB POS="POST">0</SB>of a processing part at point A satisfyingΘ=0 measured by a surface position measuring device 85 during one rotation of a workpiece W in the midst of grinding and warp t<SB POS="POST">0</SB>as reference. Deflection F<SB POS="POST">i</SB>is calculated by adding to the radius size change correction of a decrease (D<SB POS="POST">0</SB>-D<SB POS="POST">360</SB>) in a diameter of the workpiece by grinding and cutting which is measured by a workpiece diameter measuring device 83, and a maximum difference in value of deflection F<SB POS="POST">i</SB>ranging fromΘ=0 toΘ=360 is defined as deflection accuracy Fm in the processing part. On the basis of the deflection accuracy Fm, a deflection removal grinding and cutting process is performed. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
