超音波振動系におけるねじ結合部に関する研究 : ねじ結合部を応力振幅の節の位置に置く場合

概要

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In order to establish the most suitable method of design of threaded joints used in ultrasonic vibration system, the effects of the threaded joints on vibrational characteristics of the ultrasonic vibra.tion system are investigated by comparing the test piece of threaded type with that of solid type which is regarded as an ideal of threaded type experimentally and theoretically. In this report the case where threaded joints are located at the node of stress amplitude, is treated. The obtained results are as follows : (1) Concerning Q value of ultrasonic vibration system, Q value of threaded type is about 70% of that of solid type. (2) Con.cerning resonant frequency of the system, by solving the fundamental equation of longitudinal vibration of the test pieces of threaded type and solid type, the frequency equations are deduced. Then the results from the frequency equations are similar in tendency to that from the experiment. (3) Concerning displacement amplitude of the sys.tem, the mode of displacement distribution obtained from the experiment approximately agree with the tendency of that obtained theoretically. Also it is scarecely dependent on tightening force of the threaded joints.
公益社団法人精密工学会の論文
1984-03-05