轴线角误差的斜齿轮拓扑修形及仿真

摘要

为了改善齿轮副轴线角误差对其传动性能的影响,文中提出了轴线角误差的斜齿轮拓扑修形新方案,用圆弧齿廓刀具展成加工齿轮,齿向采用高阶非对称鼓形修形.利用齿轮啮合原理、齿面接触分析和齿面承载接触分析技术,研究了齿向不对称修形参数(两侧最大修形量和最大修形长度)对承载传动误差的影响,设计了合理的不对称修形参数.仿真结果表明当轴线角误差γ1为0.05′时采用最大修形长度不对称的设计承载传动误差最大波动量减少了42.85%,提高了齿轮传动性能;当轴线角误差γ2为0.05′时采用最大修形量不对称的设计承载传动误差最大波动量减少了53.47%,提高了齿轮传动性能.%In order to reduce the effect of axis angle errors on the transmission performance of helical gear pairs,this paper presents a new topological modification method.The gear was generated by a cutter with a circular tooth profile,then the high-order and asymmetrical axial drum-shaped modification was employed.Based on the gear meshing theory,the tooth contact analysis (TCA)and loaded tooth contact analysis (LTCA)technologies,the effects of asymmetrical axial modification parameters(maximum modification value and maximum modification length on both sides)on the loaded transmission errors (LTE)are studied,with the rational asymmetrical modification parameters designed for the helical gear. Simulation result shows that there is a 42.85% decrease in the fluctuation of LTE when the axis angle errorγ1is 0.05′and the asymmetrical maximum modification length is used.Similarly,there is a 63.7% decrease in the fluctuation of LTE when the axis angle errorγ2is 0.05′and the asymmetrical maximum modification value is applied.Thus the gear's transmission performance has been improved.