Gear shaft machining system and clamp device thereof for machining gear shaft

The utility model discloses a gear shaft machining system and a clamp device for machining a gear shaft, the clamp device for machining the gear shaft comprises a support used for fixing a shaft part and a transition sleeve capable of being arranged on the periphery of the shaft part in a sleeved mode, and a taper hole is formed in the center of the support. The outer periphery of the transition sleeve is in taper fit with the inner periphery of the taper hole, and at least two axial gaps are formed in the circumferential direction of the transition sleeve. By means of the clamp device for machining the gear shaft, repeated alignment operation does not need to be carried out on shaft parts, and the machining efficiency of the shaft parts can be effectively improved. 本实用新型公开了一种齿轮轴加工系统及其加工齿轮轴的夹具装置，加工齿轮轴的夹具装置包括：用于固定轴类零件的支座和可套设于轴类零件的外周部的过渡套，支座的中心处设有锥形孔，过渡套的外周部和锥形孔的内周部为锥度配合，过渡套的周向设有至少两个轴向缝隙。通过使用本实用新型所提供的加工齿轮轴的夹具装置，无需对轴类零件进行反复的找正操作，可有效提高轴类零件的加工效率。