机车车辆用车轮由于诸多原因,如踏面擦伤等需要旋修,当轮辋厚度达到规定限度就要更换新车轮。换轮时使用车轮压装机,先将旧轮拔出,再将新轮压入。文章介绍了由于机加工中心加工时车轮需较大的压入力而发生卡轴(卡滞)问题。经多年观察研究,查明了卡轴的真实原因;针对存在的问题,采取了行之有效的对策,从而解决了车轮压装作业中卡轴的问题。 For many reasons, such as locomotive scratches, the wheel of a rolling-stock vehicle needs to be screwed in. When the thickness of the rim reaches a predetermined limit, a new wheel needs to be replaced. Use the wheel pressure when changing wheel, pull out the old wheel first, then push the new wheel. The paper introduces the problem of jamming (jamming) due to the large press-in force of the wheel when machining. After many years of observational research, the real reason of the shaft has been identified. In view of the existing problems, effective measures have been taken to solve the problem of the shaft in the wheel loading operation.