Sound of a ball spline operated at a certain linear velocity
Sound of a ball spline operated at a certain linear velocity
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DOI：
10.1243/13506501jet453
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发表时间：
2009-01
期刊：
影响因子：
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通讯作者：
H. Ohta;S. Iwasaki;T. Kazama;K. Hoshino
中科院分区：
文献类型：
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作者：
H. Ohta;S. Iwasaki;T. Kazama;K. Hoshino
本文研究了轻载或中载滚珠花键在一定线速度下运行时的声音。实验结果表明，滚珠花键的声波波形为脉冲状，其过球周期为Tp，在20 kHz范围内，轻、中预紧滚珠花键的声谱中分别出现f1-f8和f1-f7声峰。补充实验表明，滚珠花键响声的主要原因是滚珠与加载区入口处的花键轴或花键螺母发生碰撞。实测的声峰频率与用有限元法（FEM）得到的花键轴或螺母的径向弯曲固有频率基本一致。这意味着声音峰值是由花键轴和螺母的自然径向弯曲振动引起的。最后，基于实验和有限元分析结果，阐明了滚珠花键的发声机理。
Abstract This article deals with the sound of light or medium-preloaded ball splines operating at a certain linear velocity. Experimental results showed that the sound waveforms of the ball splines are pulse-like with ball passage period T p, and sound peaks f 1-f 8 and f 1-f 7 appear in the 20 kHz range sound spectra of the light- and medium-preloaded ball splines, respectively. A supplemental experiment showed that the main cause of the ball spline sound is the collision between the ball and the spline shaft or spline nut at the entrance of the load zone. The measured frequencies of the sound peaks nearly matched the natural radial-bending frequencies of the spline shaft or nut obtained by finite-element method (FEM). This means that the sound peaks are caused by the natural radial-bending vibrations of the spline shaft and nut. Finally, based on the experimental and FEM results, the sound-generating mechanism of the ball splines has been elucidated.