Abstract:For the problems encountered in the development of a novel planequadraticenvelope annular worm CNC grinding machine, the article analyzes the forming principle of the worm surface and the traditional grinding method, and then analyzes the virtual center distance grinding principle and key technologies of the worm surface. The feasibility of the fouraxislinkaged grinding method was also proposed, and the structural layout and overall design of the new grinding machine were also proposed. Aiming at the two problems of the large distance between the grinding processing surface and the center axis of the rotary table and the large distance between the grinding point on the grinding wheel surface and the center axis of the rotary table, an inclined grinding wheel design was proposed on the structural layout of the grinding machine as well as the design scheme of hidden grinding head, at the same time, the design of translational dressing for the dressing and compensation methods of the grinding wheel is proposed. These new schemes solved the problems of the grinding area shape and position outoftolerance caused by the table rotation error during the grinding process, and the virtual prototype design of the grinding machine was completed.