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我校办工厂有1台M7150A平面磨床(上海机床厂产),投用以来先后发生过两次主轴抱轴故障。第一次更换了主轴和瓦块,第二次是将后瓦改作前瓦进行修理。两次故障均发生在主轴前瓦轴颈处,前瓦块损坏严重不能继续使用,后轴颈和后瓦块基本完好。根据上述状况,我们采取了以下措施进行修复: 1.修光主轴前轴颈,并检查了尺寸精度、几何精度和硬度,基本符合原设计的装配要求。 2.主轴的前瓦块,用第一次主轴抱轴故障后拆下的后瓦块来替代。因为经查阅有关资料,均没有要求前后瓦块必须分别使用,只强调必须注意瓦块的旋向及
Our factory has a factory M7150A plane grinder (Shanghai Machine Tool Plant production), has been put into use twice the spindle axis failure. The first replacement of the spindle and tile, the second is to change after the tile was repaired before the tile. Both failures occurred in the spindle before the spindle bearing neck, serious damage to the former tile can not continue to use, after the journal and after the tile basically intact. According to the above situation, we have taken the following measures to repair: 1. Repair the spindle front journal, and checked the dimensional accuracy, geometric accuracy and hardness, basically meet the original design assembly requirements. 2. The front pad of the spindle, replaced with the rear pad removed after the first spindle failure. Because after reviewing the relevant information, there is no requirement that front and rear pads must be used separately, only emphasis must be paid to the rotation of the pads and