Influence of machining parameters adjustment on tooth contact of spiral bevel gear

In spiral bevel gear machining, there are many factors that affect the results of tooth contact analysis, such as the approximation of tooth cutting adjustment calculation, the spatial error between the axes of the machine tool, the adjustment error of the machine tool, and various structural deformations. In actual production, the machine tool processing adjustment card requires high calculation accuracy, but it is difficult to avoid rounding errors. When adjusting on the machine tool, the operating level and quality of workers and even the psychological state of workers will bring errors to the processing parameter adjustment accuracy. A large number of actual production experience has also confirmed that the machine tool is adjusted completely according to the processing parameters on the adjustment card, The meshing condition of the machined gears is not good in most cases, which is the result of the cross influence of many factors.

In general, the processing parameters of the small wheel are more than those of the large wheel, and the processing of the small wheel is more complex, so the adjustment of the processing parameters is generally carried out on the small wheel. This paper studies the generating wheel pitch, vertical wheel position, tooth height curvature correction coefficient and radial tool position in the machine tool adjustment parameters of the denaturing small wheel, and obtains the influence of the changes of the four small wheel processing parameters on the contact performance and its laws, Then the influence of the adjustment accuracy on the gear contact performance is studied, which provides a basis for the adjustment of the actual production processing parameters.

Based on the tooth surface contact analysis of spiral bevel gear, the influence of machining parameter adjustment on tooth surface contact and its law are studied. By changing the adjustment accuracy of a single machining parameter, the sensitive machining parameters that have a great impact on tooth surface contact are determined.