A travelling wave type ultrasonic vibration grinding wheel utilizing a stator of an ultrasonic motor is proposed. An ultrasonic motor can be used as a wheel by electroplating diamond grits on the stator. Experiments of constant depth of cut grinding and constant pressure grinding for various kinds of workpiece materials with the proposed wheel were conducted. It was found that, grinding force and stock removal rate are improved remarkably in case of low wheel peripheral speed, low grinding pressure and acceleration vibration mode.
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