塑料斜齿轮与钢制蜗杆传动的热力分析

结合齿轮啮合原理,推导出塑料斜齿轮与钢制蜗杆传动副的啮合方程式.基于MSC.Patran/Nastran建立塑料斜齿轮和钢制蜗杆传动的本体温度场,并对啮合传动副进行有限元结构分析,得到此传动机构热平衡过程中载荷、本体温度和环境温度之间的内在联系.并通过赫兹接触理论验证了有限元分析的正确性.结果表明:在该传动过程中,热源从啮合齿面逐渐扩散到轮齿端面和非工作齿面上,热平衡时啮合齿面上轮齿中部靠近分度圆处温度最高,而轮齿端部温度最低.

Thermodynamic performance of plastic helical gear and steel worm transmission

According to the gear engagement theory,the gearing equation between plastic helical gear and steel worm was carried out.The bulk temperature field of the gear pair was established based on MSC.Patran/Nastran.An analysis was wade by finite element method(FEM) and the relationship between load,buck temperature and environmental temperature in the process of heat balance was obtained.Based on Hertz contact theory,the finite element analysis result was verified.Study results show that the heat transfers from the meshing gear tooth surface to face and non-working tooth surface gradually;the highest temperature is around the central pitch circle of the meshing gear tooth and the lowest on the end gear.