| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ultrasonic grinding wheel can accurately grind a work at high speeds in a variety of grinding devices and less worn. Ž<P>SOLUTION: This ultrasonic grinding wheel 8 includes slits 10 formed in an aluminum alloy grinding wheel holding member 9 concentrically to each other. Annular piezoelectric ceramics 12a, 12b are joined to recesses on the outer periphery of the slits, respectively, using an epoxy resin. A grinding tool 4 layer is formed on the outermost peripheral part of the grinding wheel. To efficiently vibrate the ultrasonic grinding wheel 8 in the radial direction, the aluminum alloy grinding wheel holding member 9 is desirably such that the outer diameter D thereof is twice the width W thereof or larger. This is because if the outer diameter D is less than twice the width W, the vibration component in the rotating axis direction is increased. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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