超音波スクリュー振動による加工法の研究(第4報) : 超音波振動によるねじ立ての機構

概要

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Mechanism of ultrasonic vibration tapping and its experimental results were reported in this paper. Mechanism of ultrasonic vibration tapping is similar to that of Piispanen's card model, the experimental result agree with the theoretical one. For the difficult machining pure alminium (A 1050), cutting torque, cutting ratio, shear angle, deformed layer etc. were investigated using the quickstop device for tapping. The following results were obtained. In vibration tapping, tapping torque was nearly equal to frictional torque when tap was screwed into female screw, the value was about 0.05 Nm. Cutting ratio and shear angle in vibration tapping with kerosene were about three times of those of conventional tapping. Deformed layer of female screw was not recoganized in vibration tapping.
公益社団法人精密工学会の論文
1991-06-05