Method for grinding roller path of bearing inner ring

Abstract

The invention discloses a method for grinding a roller path of a bearing inner ring, which trims grinding wheels by adopting a generating cutting method. In the method, a diamond stylus (3) intersects with a revolving center line of a grinding wheel (2) to form an angle alpha, the diamond pen does a diameter d circular motion around the revolving center line thereof in a tangent plane of a grinding wheel working plane, thus in relative circular motion of the diamond stylus and the grinding wheel, the working plane of the grinding wheel is generated by the diamond into a spherical ring shape with same radius, which takes an intersection point of the revolving center line of the diamond stylus and the revolving center line of the grinding wheel as a center of sphere, and then the trimmed grinding wheel carries out grinding processing on the roller path of the bearing inner ring. An intersection point distance of the grinding wheel working plane is L, the circumferential diameter of the diamond stylus is d, the distance from the revolving plane of the diamond stylus to the spherical center of the spherical ring of the working plane of the grinding wheel is RX, the radius of the spherical ring of the working plane of the grinding wheel is R, wherein R is equal to the curvature radius of the roller path of the bearing inner ring and RX is approximately equal to R, and the magnitude of L or alpha can be adjusted to obtain the corresponding RX for rough adjustment, and the adjustment of d can be used for fine adjustment. The method is simple and practical.

Description

technical field [0001] The invention belongs to the technical field of bearing grinding, in particular to a grinding method for a raceway of an inner ring of a bearing. Background technique [0002] The grinding process of the inner ring of the bearing mostly adopts the cutting method. combine Figure 1-2 During the grinding process, the inner ferrule 1 and the grinding wheel 2 rotate around their respective centers of rotation. On the other side of the grinding wheel, the bow frame 4 of the grinding wheel dresser rotates around its center of rotation to drive the diamond pen 3 on the bow frame 4 to The working surface of the grinding wheel reciprocates, thereby trimming the size and shape of the working surface of the grinding wheel 2 into a circular arc that matches the raceway of the inner ring 1, and then cuts into the raceway of the inner ring 1 through the working surface of the grinding wheel 2 The surface to be processed is used to realize the grinding process of th...

AI Technical Summary

Problems solved by technology

[0003] The defect of the above cut-in method is: since the arc radius of the working surface of the grinding wheel 2 is equal to the arc radius of the raceway of the inner ring 1, if the arc radius of the raceway of the inner ring 1 increases, the working surface of the grinding wheel 2 The radius of the arc should also be increased accordingly, so when dressing the grinding wheel, the distance h between the center of rotation of the dresser bow 4 and the nib of the diamond pen 3 will also increase accordingly. If h exceeds a certain range, the grinding machine itself will be configured The grinding wheel dresser just cannot be used, and the grinding wheel dresser needs to be rebuilt, which not only brings trouble to production, but also the effect of grinding wheel dressing is not very ideal, and sometimes even cannot be dressed

[0005] 1. The dressing process of the grinding wheel is complicated, the dressing is difficult, and the dressing accuracy of the grinding wheel is not high

[0006] 2. The reusability rate of grinding wheel dresser is low, different types of workpieces require different grinding wheel dressers, production management is difficult, efficiency is low, and cost is high

[0007] 3. The quality of grinding wheel dressing has a great influence on the grinding quality of the workpiece, the error reflection and error transmission are obvious, and the qualified rate of the workpiece is not high

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