Insertion pin polishing and fixing device

The utility model discloses a contact pin polishing and fixing device, which relates to the field of contact pin manufacturing and comprises a lower layer device and an upper layer device, the lower layer device comprises a lower layer fixing plate, a lower layer limiting hole, a limiting ring, an extension shaft, a first fixing plate and a first threaded shaft, and the lower layer limiting hole is formed in the center of the top end of the lower layer fixing plate. Four sets of limiting rings are fixedly connected to one side of the top end of the lower-layer fixing plate and symmetrically arranged on the two sides of the top end of the lower-layer fixing plate, openings are formed in the positions, corresponding to the limiting rings, of the lower-layer fixing plate, and an extension shaft is slidably connected into each set of openings. According to the contact pin grinding and fixing device, the top end of the lower layer device is fixedly connected with the upper layer device, when the contact pin grindi