小角度空间交错轴变厚齿轮传动啮合动态特性研究  

Time-varying mesh characteristics of beveloid gears with crossed axes and small shaft angle

作　　者：宋朝省[1] 朱才朝[1] LIM Teik Chin 罗家元[1] 徐向阳[1] 

机构地区：[1]重庆大学机械传动国家重点实验室 [2]University of Cincinnati School of Dynamics Systems,Mechanical Engineering,Cincinnati,USA Ohio 45221

出　　处：《振动与冲击》2012年第8期153-157,共5页Journal of Vibration and Shock

基　　金：中央高校基本科研业务费(CDJXS11111138)资助;重庆市自然科学基金(CSTC2010BB4241)资助;国家十二五科技支撑计划(2011BAF09B07);国家自然科学基金(51175523)资助项目

摘　　要：为揭示小角度空间交错轴变厚齿轮副的时变啮合特性与非线性动态特性,在精确几何建模的基础上,建立空间小角度交错轴变厚齿轮传动时变啮合模型,获取其时变啮合刚度与时变传动误差;考虑外部载荷与侧隙变化的影响,采用集中参数法建立齿轮传动非线性动力学模型,对其系统非线性特征进行仿真。结果表明外部载荷的增加直接导致齿轮副啮合刚度、传动误差、动态传动误差和动态啮合力的增加,同时啮合刚度的增加使得系统共振频率增加;侧隙的增加使得系统在轻载下出现与单边、双边冲击耦合的突跳现象,在重载下双边冲击区域变大,动态啮合力增加。The objective of this study was to reveal time-varying mesh characteristics and nonlinear dynamics of a crossed beveloid geared rotor system with small shaft angle. A new mesh model based on exact gear geometry was developed. Using the proposed mesh model, the time-varying mesh stiffness and time-varying transmission error were obtained. A nonlinear vibration model was set-up to study the dynamics of the crossed beveloid geared rotor system using the lumped parameter method considering variation of load and backlash nonlinearity. The results showed that increase in torque load tends to increase transmission error, mesh stiffness, dynamic transmission error and dynamic mesh force; a/so, the frequency of the major response peak becomes lager due to increase in mesh stiffness; under a light torque load level, the non-linear behaviors including jump discontinuities coupled with single-sided tooth impacts and double-side tooth impacts can be seen with increase in backlash; under a heavy torque load level, the range of double-side tooth impact becomes wider and the dynamic mesh force increases.

关 键 词：交错轴 变齿厚齿轮 时变啮合特性 非线性动态特性 

分 类 号：TH132.413[机械工程—机械制造及自动化]