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M7120(一型)平面磨床是我厂使用比较多的磨床之一,在使用过程中磨头部位的故障时有发生,现将我们在刮研和修理磨头方面的体会介绍如下。机床经过一定时间的使用,必然引起主轴轴瓦正常的或非正常的磨损,主轴与轴瓦的间隙增大,使加工精度降低,甚至不能工作。机床工作时,轴瓦的表面受力是不平均的,轴瓦表面的磨损也是不平均的,轴瓦磨损小时,可重新调整间隙恢复精度,当磨损较大用调整间隙的方法不能恢复精度时,就需刮研轴瓦。主轴硬度高,磨损很小,一般只出现拉毛、经抛光修复即可。
M7120 (one type) surface grinder is one of the grinders used by our factory. In the process of using, the failure of the grinder parts occurs from time to time. Now we will introduce the following aspects in the research and repair of grinding head. After a certain period of time, the machine tool will inevitably cause the normal or abnormal wear of the spindle bearing. The gap between the spindle and the bearing bush will increase so that the machining precision will be reduced or even unable to work. Machine work, bearing surface force is not uniform, the bearing surface wear is not uniform, the bearing wear small, you can readjust the clearance recovery accuracy, when the wear and tear with the adjustment of the gap method can not be restored, you need Scraping bearings. Spindle hardness, wear a small, generally only appear Mao Mao, the polishing can be repaired.