超音波振動を用いたはめ合い技術の開発

概要

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This paper describes a new method for inserting operations of the parts with the clearance of several micrometers. In this work, it was found that inserting motion became easy by the application of ultrasonic vibration to one of the peg or the hole. This effect is caused by the reduction of the apparent friction on the surface of rod (in this case, that is the peg), the generation of the radial vibration owing to the Poisson's effect and the force directed to the node position of rod, which is generated by the combined vibration of the longitudinal vibration and the radial vibration mentioned above. Besides, as for this inserting mechanism, periodical impact was applied to the rod which has any kind of length with natural frequency of its own. It was found that the rod vibrates at its own natural frequency or at the frequency of several times of the natural frequency. Then, a prot-type automatic inserting system with a scara type robot was developed. The superposition effect of vibration onto the parts to be assembled was confirmed.
公益社団法人精密工学会の論文
1988-03-05