拓扑修形齿轮齿面误差分析

Analysis of Tooth Surface Error of Topology Modification Gear

齿轮拓扑修形采用成形法磨削加工时,齿廓修形是通过修整砂轮截形来实现的,而齿向修形则是通过添加砂轮或齿轮的附加运动实现。但是当齿轮或砂轮存在附加运动时,齿轮与砂轮之间的相对位置会发生变化,其表面的实际接触点也会发生相应变化,齿向修形与齿廓修形会发生干涉,因此,拓扑修形齿面与理论齿面存在一定误差。通过计算实例对拓扑齿面误差进行讨论分析,得出中心距变动量对拓扑齿面误差成线性关系。对齿轮的拓扑修形有一定的指导作用。

When gear topology modification using the forming method grinding,the tooth profile modification is achieved by trimming the wheel truncation,while the tooth modification is achieved by adding an additional movement of the wheel or gear. But when the gear wheel or wheel there is additional movement,the relative position between gear and grinding wheel will change,the actual contact point of the surface will also be a corresponding change,the tooth modification and tooth profile modification will interfere. Therefore,there is a certain error between the topological modification tooth surface and the theoretical tooth surface. The topological errors are analyzed and discussed through calculation examples. The results show that the variation of center distance is linear to the topological tooth surface error which can guide the topology modification of gear.