斜齿轮啮合刚度变化规律研究

利用基于线性规划法计算啮合刚度和载荷分布的改进方法,分别计算了一对内、外啮合斜齿轮在不同螺旋角时的啮合刚度,总结了啮合刚度在一个啮合周期内的变化规律.计算结果表明,所有参与啮合轮齿形成的啮合线总长度是决定啮合刚度大小的主要因素,在进入啮合和退出啮合的瞬时位置,啮合刚度会减小.通过与航空工业部标准(HB/Z 84.1-1984)算法的计算结果比较,浅析了轮缘厚度对啮合刚度的影响.

Research on the variation rules of meshing stiffness of the helical gear

The time-varying meshing stiffness is one of the internal inspirations for gear system vibration. The meshing stiffness of an external and inner helical gear pair with different helical angles respectively using a modified method which could determine the meshing stiffness and actual load distribution based on linear programming. The variation rules of meshing stiffness during one whole meshing period was summarized. The following findings are obtained in this paper: the key factor influnece the meshing stiffness most significantly is the whole length of contact-line of all the teeth in the engagement. The meshing stiffness decreses at the instantaneous position at which the teeth enter contact or exit contact. The results were compared with those obtained by HB8] and the influnce of rim thickness on the meshing stiffness is analyzed.