近似面齿轮传动的齿面拓扑修形主动设计

为了提高面齿轮的磨齿效率,采用不做齿向进给运动的大半径盘形砂轮磨齿得到的面齿轮具有近似齿面,然而该近似面齿轮与双向修形小轮的啮合性能不够理想.因此进一步通过啮合理论重新构造小轮齿面,并根据预设的啮合性能对该新构造的小轮齿面进行拓扑修形设计,以控制近似面齿轮传动的啮合性能.小轮的拓扑修形齿面采用盘形砂轮局部点共轭法磨齿加工,建立了小轮拓扑修形齿面与加工参数之间的线性方程.用实例说明了所提方法的应用,齿面接触分析结果与给定的啮合性能基本一致.

Active Design of Face Gear Drive by Flank Modifying of Ease-off Topology

In order to improve the efficiency of tooth grinding of face gear,the face gear generated by the grinding method in which the applied disk-shaped grinding wheel of large radius was not feed along the longitudinal orientation obtained approximate tooth flank.But the meshing performance between the approximate tooth flank and double crowned tooth surface of pinion was less than ideal, therefore the tooth flank of the pinion was further re-constructed by meshing theories, and the re-constructed tooth flank of the pinion was designed by ease-off topology modification according to the pre-designed meshing performance for the purpose of control the meshing performance of the face gear with the approximate tooth flank. The ease-off topology modified tooth flank of the pinion was manufactured by a disk-shaped grinding wheel that was in localized point conjugation with the ease-off topology flank,and linear equations between machining parameters and the case-off topology flank of the pinion were deduced. The application of this proposed method was demonstrated by numerical examples,and the results of tooth contact analysis （TCA） coincide with the pre-designed meshing performance.