考虑齿轮位移协调的2级星形传动多分流均载研究

中文摘要: 为了揭示航空发动机2级星形传动系统大小星轮载荷分配机理，针对所有齿轮的偏心误差、齿厚误差、基节误差、安装误差，轴承制造误差等分别进行了当量角度啮合误差分析，考虑了太阳轮和内齿圈同时浮动导致的啮合侧隙变化而引起的浮动啮合误差，得到了2级啮合线上的综合角度啮合误差，建立了针对2级4路功率分流特征的各齿轮转角位移协调的精细化均载系数计算模型，获得了多分流多级系统的均载系数和均载特性曲线，得到了太阳轮和内齿圈的浮动规律，为航空宇航制造上确定均载系数、工艺上合理分配及控制公差提供科学依据。
Abstract:To reveal the multiple-split load sharing mechanism among star gears of 2-stage star gearing system in aero-engine,based on a meshing error analysis made on eccentricity error,gear thickness error,base pitch error,assembly error,and bearing manufacturing error of gear components of the star gear train respectively,and the floating meshing error resulting from meshing clearance variation caused by the simultaneous floating of sun gear and annular gear considered,a refined mathematical model of 2-stage multiple-split loading sharing coefficient calculation was established with the consideration of displacement compatibility,and the load sharing coefficient of system of 1.049 was obtained.