Anti-impact sliding main shaft device

The invention belongs to the technical field of mechanical assembly, and discloses an anti-impact sliding main shaft device. The total containment of a central spindle and a bearing bush lining for bearing bushes and shaft sleeves is realized, and the shape mutation of ceramic parts is avoided on design; meanwhile, all the shaft sleeves are arranged as ceramic materials, all the bearing bushes arearranged as polyether-ether-ketone or polyether-ether-ketone base composite materials, and the shaft sleeves and the bearing bushes form ceramic-polyether-ether-ketone friction pairs; and a feed liquid route is further optimized through the structural design, so that the processing and installation of the feed liquid route are more convenient, and the feed liquid route is prevented from being blocked and leaked. Finally, the processing difficulty of the sliding main shaft device can be reduced, the impact resistance and bearing capacity are improved, the abrasive resistance is increased, andthe service life is prolon