弧齿锥齿轮的齿面主动设计及试验验证

Function-oriented Active Tooth Surface Design of Spiral Bevel Gears and Experimental Tests

齿面印痕和传动误差对齿轮传动的性能起着决定作用,根据齿面印痕的位置、方向及传动误差幅值的要求,在齿面上设计三个啮合点,通过对这三个啮合点的控制,达到对齿面啮合质量的全程控制。在此基础上,为了满足不同的加工要求,又提出按照给定的垂直轮位的值对齿面进行再设计,保证传动误差的幅值不变且接触迹线仅有较小的改变,为弧齿锥齿轮副设计提供了新的方法和途径。最后在磨齿机上加工了一对齿轮,通过印痕检测验证了本文设计方法的正确性。

Transmission errors and contact pattern have determinative effects on the meshing performances of a gear drive, so a new approach for designing pinion surface of spiral bevel gears is proposed, based on a predesigned parabolic function of transmission errors with limited magnitude of maximal transmission errors and a predesigned linear function of contact path. This approach is based on three meshing points. By controlling their magnitudes of transmission errors and the positions on the tooth surface, the whole process control of engagement quality is realized. In addition, in order to meet different manufacturing reguirements, the value of work offset, one of the pinion machine tool settings, can also be assigned in advance with little influence on transmission performance. The developed approach is illustrated with numerical example. The proposed ideas are proven by the manufacturing and test of a pair of spiral bevel gears.