In the production of large-volume skf bearings, the process system is generally adjusted by using prototypes, prototypes, blocks and masters; in single-piece small batch production, the scale on the machine tool or the gauge block is usually used for adjustment. The content of the adjustment work also varies depending on the complexity of the workpiece. For simple surfaces (such as inner and outer cylindrical surfaces), only the positional relationship of each forming motion is generally adjusted; for complex surfaces (such as spiral surfaces and involute surfaces), Also adjust the speed relationship of the forming motion. Therefore, adjusting the skf bearing error is caused by a variety of factors.
The skf bearing measurement error should be less than 10% of the tolerance. The general measurement error warfare difference is 10% to 33%, and as the tolerance level increases, the proportion of error is larger, that is, the smaller the tolerance, the higher the proportion of error, and the tolerance of skf imported bearings It is difficult to reach 10% above IT5. Measurement error does not mean that the inspection tolerance can be relaxed by 10%, but a certain safety margin is given to ensure that the user is qualified according to the standard acceptance.
In each process of skf bearing parts processing, in order to obtain the size, shape and positional accuracy of the bearing surface, the machine tool, fixture and tool must be adjusted, and any adjustment work will inevitably bring certain errors. The production batch and machining accuracy of bearing parts in machining are often different, and the adjustment methods used are also different.
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