滚珠型弧面凸轮分度机构动力学模型的建立及模态分析

李蕾;冯显英;张成梁;牟世刚;王绥远

振动与冲击 ›› 2012, Vol. 31 ›› Issue (16) : 62-65.

PDF(1440 KB)
PDF(1440 KB)
振动与冲击 ›› 2012, Vol. 31 ›› Issue (16) : 62-65.
论文

滚珠型弧面凸轮分度机构动力学模型的建立及模态分析

  • 李蕾,冯显英,张成梁,牟世刚,王绥远
作者信息 +

Dynamic model and modal analysis for globoidal cam indexing mechanism with steel ball

  • Li Lei’Feng xian-ying’Zhang cheng-liang’Mu shi-gang’Wang sui-yuan
Author information +
文章历史 +

摘要


摘 要:应用拉格朗日方程对一种新型的滚珠型弧面凸轮分度机构进行了动力学建模。忽略滚珠的质量,将滚珠与凸轮之间的接触刚度以及滚珠与分度盘之间的接触刚度近似看作为两个接触刚度的串联,得到了等效接触刚度。在建模过程中,利用回转变换张量法对机构中广义坐标几何位移关系进行了分析,建立了考虑扭转弹性模量的滚珠型弧面凸轮分度机构的动力学方程。由动力学方程得到了机构固有频率及其相对应的振型。结果表明,固有频率在分度时期随凸轮转角变化,在停歇时期为恒定值,并且不同阶的固有频率变化趋势也不相同。

Abstract

Abstract:Dynamic model of a new type of globoidal cam indexing mechanism with steel ball was established through Lagrange Equation. In this process mass of roller was neglected, and the contact stiffnesses between roller and cam and between roller and indexing plate can be regarded as series connection. According to rotary transform tensor theory geometric displacement relation of generalized coordinates was analyzed. Dynamic equations of the mechanism considering torsion modulus were built, and natural frequency and vibration mode of transmission system were obtained. The results show that natural frequency is variable at indexing period and invariable at dell period, and natural frequency trends of different order are dissimilar.

关键词

滚珠型弧面凸轮分度机构 / 动力学方程 / 等效接触刚度 / 固有频率

Key words

globoidal cam indexing mechanism with steel ball / dynamic equation / equivalent contact stiffness / natural frequency

引用本文

导出引用
李蕾;冯显英;张成梁;牟世刚;王绥远. 滚珠型弧面凸轮分度机构动力学模型的建立及模态分析[J]. 振动与冲击, 2012, 31(16): 62-65
Li Lei’Feng xian-ying’Zhang cheng-liang’Mu shi-gang’Wang sui-yuan . Dynamic model and modal analysis for globoidal cam indexing mechanism with steel ball[J]. Journal of Vibration and Shock, 2012, 31(16): 62-65

PDF(1440 KB)

Accesses

Citation

Detail

段落导航
相关文章

/