As a CNC machining equipment, the machining center has many points that need to be understood and paid attention to before purchasing, and the placement environment is one of the very important items. In order to prolong the service life of the equipment as much as possible, the machining center generally needs to be placed in a place that avoids direct sunlight and has a relatively stable temperature. However, with the advent of summer, the indoor temperature continues to rise, and the processing equipment is also facing the test of high temperature.

Due to the rise in room temperature, the machining center will also have temperature changes during operation, and equipment failures caused by the soaring temperature also emerge in an endless stream. As one of the main components of the machining center, the spindle operates in a high temperature environment for a long time. A series of inevitable problems arise. To maintain the stable operation of machining operations, it is necessary to have a deep understanding of common spindle failures and repair measures.

The spindle heats up, the processing noise increases, and the rotation accuracy decreases

The grease of the spindle bearing is mixed with impurities, resulting in increased noise; the preload of the front bearing is reduced, the spring of the internal automatic clamping device is fatigued, and the positioning surface of the tapered hole is damaged, which will cause the offset of the machining positioning. To deal with these problems, according to the cause of the failure, select qualified grease, replace the front end bearing of the spindle and the spring of the clamping device, and grind the positioning surface of the tapered hole to pass.

The tie rod steel ball of the spindle part is damaged

If the tie rod steel ball in the automatic tool clamping mechanism is damaged, or the tail cone surface of the tool handle is damaged, the oil cylinder and the cylinder need to be completely cleaned, the sealing ring should be replaced, and the pressure should be adjusted so that the two can reach the same action. state. In addition, in addition to finding and repairing problems, regular inspections of components are also required to detect and eliminate hidden faults in time.

The positioning key of the spindle part is damaged

When the positioning key at the front end of the spindle used to toggle the tool holder selection is deformed to a certain extent, the sound of the equipment during the tool change operation will also be enhanced. To solve this problem, it is necessary to adjust the installation position of the Hall element, and use the anti- Reinforce with loose glue, adjust the tool change reference point, and replace the positioning key. During the machining process, it is also necessary to check the exact stop position of the spindle and the change of the position of the tool to change reference point, so as to find out the problem in time and solve it as soon as possible.

Conclusion

The spindle of the machining center can be said to be the core component of the machining center. Its quality directly affects the final effect of the workpiece processing. Therefore, special attention should be paid during the use process. In addition to understanding the repair measures for various faults, daily inspections also It is essential to effectively reduce the time of equipment downtime for repairs due to failures, ensure the smooth operation of normal operations, thereby reducing the production cost of enterprises and improving production efficiency.

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