在液压传动中,外伸轴杆动配合处的泄漏问题是整个系统泄漏的重点部位。由于该处泄漏故障比较普遍,因此动配合处的正确密封,是设计和使用部门关注的问题之一。 1、轴杆表面加工质量对密封性的影响:为提高动配合处的密封性,被密封的轴杆表面的粗糙度要适当。表面过于粗糙会加速密封圈的磨损,而过于光滑不但会增加加工费用,并且不利于油膜的形成和保持,而产生干磨或半干磨。 In the hydraulic transmission, the problem of the leakage of the movable shaft of the extended shaft is the key part of the whole system leakage. Due to the common leakage problem at the place, the proper sealing of the moving parts is one of the concerns of the designing and using departments. 1, the shaft surface quality of the impact on the sealing: In order to improve the sealing with the dynamic fit, the surface roughness of the shaft is sealed to be appropriate. The surface is too rough will accelerate the wear and tear of the ring, and too smooth will not only increase the processing costs, and is not conducive to the formation and maintenance of oil film, resulting in dry or semi-dry grinding.