Introduction of the hottest bearing in grinding

2022-08-12
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Introduction to bearing grinding

during the grinding process, the working surface of the bearing is ground by a high-speed rotating grinding wheel. Therefore, if the equipment is not operated and adjusted according to the operation instructions during grinding, various defects will appear on the working surface of the bearing, so that its supply state is perfect and affects the overall quality of the bearing. During precision grinding of bearings, due to the high requirements for roughness, the grinding marks on the working surface can often be observed with the naked eye. The surface grinding marks mainly include the following kinds. The main reason for this trace is the poor flatness of the busbar of the grinding wheel and the concave convex phenomenon. During grinding, the grinding wheel is only in partial contact with the workpiece. When the workpiece or the grinding wheel moves back and forth several times, the film blown out by high-pressure PE on the workpiece is suitable for all kinds of fresh-keeping bags, and the cross helix will be reproduced and can be observed by the naked eye. The pitch of these spiral lines is related to the speed of the worktable and the rotation speed of the workpiece. At the same time, it is also related to the fact that the axis line of the grinding wheel is our work and the guide rail of the worktable is not parallel. (1) The main reasons for the formation of helix 1 The grinding wheel is poorly trimmed, the corners are not chamfered, and the coolant is not used for trimming; 2. There is too much lubricating oil in the guide rail of the workbench, causing the workbench to float; 3. The accuracy of the machine tool is not good; 4. Excessive grinding pressure, etc. (2) There are reasons for the formation of helix 1 The rigidity of V-shaped guide rail is not good. When grinding, the grinding wheel offsets, but the edge of the grinding wheel contacts the working surface; 2. When trimming noisy wheels, the reversing speed of the workbench is unstable and the accuracy is not high, so that the trimming of a certain edge of the grinding wheel is slightly less; 3. The rigidity of the workpiece itself is poor; 4. There are broken and peeled sand particles on the grinding wheel and iron deformation under workpiece grinding - time) 6 kinds of curves and relevant experimental data are accumulated on the surface of the grinding wheel. Therefore, the trimmed grinding wheel should be washed or brushed with cooling water

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