Grinding wheel dressing method used for grinding processing of raceway of outer ring of bearing

Abstract

The invention provides a grinding wheel dressing method used for grinding processing of a raceway of an outer ring of a bearing, which utilizes a two-dimensional resultant motion between double worktables and a connecting rod to dress a working surface of a grinding wheel into a large arc surface with the same curvature radius R. The curvature radius R of the large arc surface which the dressing grinding wheel is provided with corresponds to that of the raceway of the outer ring of the bearing. And the dressing grinding wheel can be used for carrying out grinding processing on the raceway of the outer ring of the bearing. The double worktable are big and small slide blocks. When an oil cylinder pushes the big slide block to carry out reciprocating motion along the X direction, the small slide block carries out reciprocating motion in the Y direction relative to the big slide block at an adjustment distance L1 preset by a rotation nut, while the moving track of a B point of the small slide block is the circular motion with a circle center of an A point of the connecting rod and with a radius of a distance L between the A point and the B point so as to realize the two-dimensional resultant motion between the double worktables and the connecting rod. A horizontal distance between a pen point of a diamond pen and the A point of the connecting rod is the curvature radius R of the dressed surface of the grinding wheel, which meets the requirement for the grinding processing of the raceway of the outer ring of the bearing. The method is simple and practical.

Description

technical field [0001] The invention belongs to the technical field of bearing processing, and in particular relates to a grinding wheel dressing method used for grinding the raceway of an outer ring of a bearing. Background technique [0002] The grinding process of the outer ring of the bearing mostly adopts the plunge method. combine Figure 1-2 , during the grinding process, the bearing outer ring 1 and the grinding wheel 2 rotate around their respective centers of rotation. On one 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 on the grinding wheel. The working surface of the grinding wheel 2 is reciprocated, so that the size and shape of the working surface of the grinding wheel 2 are trimmed into a circular arc that matches the raceway of the bearing outer ring 1, and then the working surface of the grinding wheel 2 is cut into the waiting area of ​​the beari...

AI Technical Summary

Problems solved by technology

[0003] The defect of the above-mentioned grinding method is: since the arc radius of the working surface of the grinding wheel 2 is equal to the arc radius of the bearing outer ring 1 raceway, if the arc radius of the bearing outer ring 1 raceway increases, the grinding wheel 2 working surface The radius of the arc must 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 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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