格里森CONIFACE面齿轮磨齿加工原理与误差分析

Research on the Machining Principle and Error Analysis of Gleason CONIFACE Grinding Method for Face Gear

研究并给出格里森最新的CONIFACE面齿轮磨齿加工原理。推导砂轮刀具的形状和齿面方程,基于齿轮啮合原理获得磨削后的面齿轮的齿面方程;研究分析该方法加工的面齿轮齿面与理论齿面的齿面误差及误差的影响规律;结果表明,采用该方法加工获得的面齿轮齿厚较NASA报告中提供的阿帕奇直升机面齿轮齿厚要薄,加工误差在齿宽中点处最小,并逐渐向两端增大,类似于圆柱齿轮鼓形修形后的效果,通过改变砂轮刀具的锥角和砂轮半径的值可调控鼓形量误差的大小。

The machining principle of Gleason CONIFACE grinding method for face gear is developed. The shape and tooth surface equation of grinding wheel are deduced. The tooth surface equation of CONIFACE grinding method for face gear is obtained, based on theories of differential geometry and gear mesh. The error and the law of the error of CONIFACE grinding method are analyzed. The results show that the tooth thickness adopting the machining method is narrower than the gear thickness which is available in the Apache helicopter plane as NASA reported. The machining error is minimum at the middle point of the tooth width and increases gradually to both ends, which is simi- lar to the effects that the cylindrical gear take drum shape modification, and the drum quantity error can be controlled by changing the cone angle of the wheel cutter and the radius of the grinding wheel.