The method of gear dynamic mutual abrasion is a method in which the dynamic force on tooth surface was used to do the precision finishing. In order to avoid the “midconvex” of tooth profile and the serious abrasion in dedendum

the technology of center distance variation was adopted. Through the analysis of induced curvature and sliding coefficient of tooth profile

it is proves that

compared with traditional method

the compatibility of abrasion quantity on tooth surface had been improved. It would be available to the final finishing of gear.