齿轮内花键齿与外齿的几何偏心是影响齿轮传动精度的主要原因,产生几何偏心的原因很多,但最主要的原因是由于滚齿时,齿轮内花键孔与滚齿用心轴之间的间隙和热处理变形而引起的,因此提高齿轮内花键孔与滚齿夹具心轴的定位精度,采用适宜的热处理工艺和设备,是减小齿轮产生几何偏心和变形,提高齿轮加工精度的主要途径。 Geometrical eccentricity of gear internal gear and external gear is the main reason that affects the gear transmission accuracy. There are many causes of geometric eccentricity, but the most important reason is that when gear hobbing, the spline hole in the gear and the hobbing mandrel Of the gap and heat treatment caused by deformation, so to improve the gear spline hole and hobbing fixture mandrel positioning accuracy, the use of appropriate heat treatment processes and equipment, is to reduce the geometric eccentric gear and deformation, improve gear machining accuracy of the main way.