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中南大学学报(自然科学版)

Journal of Central South University

第47卷    第2期    总第258期    2016年2月

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文章编号:1672-7207(2016)02-0474-08
考虑制造误差的人字齿行星传动均载特性
任菲,秦大同,吴晓铃

(重庆大学机械传动国家重点实验室,重庆,400044)

摘 要: 以人字齿行星齿轮传动系统为研究对象,基于齿轮系统动力学理论和牛顿运动定律,考虑各构件制造偏心误差和齿廓误差、时变啮合刚度、轴承支承刚度以及陀螺效应等因素,运用集中参数法建立考虑人字齿轮实际结构特点的该型传动弯-扭-轴耦合动力学模型;通过计算在不同浮动方式下的系统均载系数,获得太阳轮偏心误差以及齿廓误差与系统均载系数关系曲线,进而分析在不同浮动方式下制造误差对人字齿行星传动均载特性的影响;同时对比分析在有太阳轮浮动和非浮动情况下,太阳轮的径向浮动能力。研究结果表明:制造误差和构件浮动对人字齿行星传动均载性能有显著的影响,构件浮动可以明显地改善系统均载特性,并且系统均载系数随制造误差的增加而增大;与非浮动情况相比,浮动太阳轮时太阳轮中心径向位移量明显较大,提高了太阳轮浮动能力。

 

关键词: 人字齿行星传动;制造误差;动力学模型;浮动;均载

Load sharing performances of herringbone planetarygears considering manufacturing errors
REN Fei, QIN Datong, WU Xiaoling

State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China

Abstract:Based on the theory of gear system dynamics and Newton''''s laws of motion, considering the actual structure of herringbone gears, a lateral-torsional-axial coupling dynamic model of a herringbone planetary gear train (HPGT) was set up by the lumped-parameter method. Manufacturing eccentric errors, tooth profile errors, time-varying mesh stiffness, bearing stiffness, gyroscopic effect, and so on were considered in the presented model. By calculating the system load sharing coefficients with different floating forms, the relationship curves between the sun gear eccentric error as well as the tooth profile error and the system load sharing coefficients were obtained and the effects of manufacturing errors on the HPGT load sharing characteristics were analysed with different floating forms; meanwhile, sun gear radial floating capacities between two situations of sun gear float and non-float were compared. The results show that manufacturing error and the float of the component significantly affect the HPGT load sharing characteristics, the float of the component can obviously improve the system load sharing performance, and as manufacturing errors go up, the system load sharing factor increases; compared with non-floating, the sun gear radial displacement is larger, when the sun gear floats, thus improving the sun gear floating capacity.

 

Key words: herringbone planetary gears; manufacturing errors; dynamic modeling; float; load sharing

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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