Burn-free and crack-free machining method for cylindrical roller bearing outer ring flange

Abstract

The invention belongs to a grinding machining method for a bearing outer ring flange. The burn-free and crack-free machining method for the cylindrical roller bearing outer ring flange is carried outon a machine tool and comprises the following steps that firstly, a bearing outer ring (2) is clamped by using a clamp, the bearing outer ring (2) and a grinding wheel (1) are started after the grinding wheel (1) enters a grinding position and cuts into a roller path, after the specified flange is ground by using the grinding wheel (1), the bearing outer ring (2) and the grinding wheel (1) are withdrawn, during machining, the rotating direction of the bearing outer ring (2) is consistent with that of the grinding wheel (1), and meanwhile cooling liquid is sprayed to the upper end of a grindingpoint on the outer end face of a grinding wheel (2) through two cooling liquid pipes (3). According to the grinding machining method for the bearing outer ring flange, burn and crack phenomena causedby grinding machining are eliminated, so that the yield is increased, and the production cost is reduced.

Description

[0001] Technical field [0002] The invention belongs to a grinding process method for the flange of the outer ring of a bearing, and mainly relates to a processing method for the rib of the outer ring of a cylindrical roller bearing without burns and cracks. Background technique [0003] At present, the grinding method for the rib of the outer ring of the cylindrical roller bearing is carried out on the machine tool. The ring is clamped by the spring clamp, the grinding wheel enters the grinding position and cuts into the raceway, and the workpiece 2 and the grinding wheel 1 are started. Run counterclockwise at a speed of 750 rpm, and run in the opposite direction to the grinding wheel (clockwise) (such as figure 1 As shown), use the two end faces of the outer circle of the grinding wheel 1 to grind two ribs respectively. While grinding the ribs, use a cooling water pipe 3 to cool down by natural cooling (such as figure 2 As shown), this processing method causes sparks to ...

AI Technical Summary

Problems solved by technology

While grinding the ribs, use a cooling water pipe 3 to cool down by natural cooling (such as figure 2 As shown), this processing method causes sparks to fly, and because the grinding wheel and the workpiece rotate in the same direction, coupled with the centrifugal force, most of the cooling water cannot effectively enter the grinding area, and cannot take away most of the grinding. The thermal energy cannot effectively reduce the temperature in the grinding area, and the effect of cleaning the grinding debris is poor, so it is easy to produce burns and cracks, and the scrap rate due to burns and cracks is as high as 20%.

In addition, when the rotation direction of the grinding wheel is inconsistent with the workpiece, the friction force is relatively large, and the grinding wheel falls off quickly, so that the grinding wheel is continuously repaired during the processing process, and the auxiliary time is long and the efficiency is low.

Images