Supporting device for drill rod hole machining

The utility model discloses a supporting device for machining a drill rod hole, which is characterized by comprising a rotary clamping mechanism, the rotary clamping mechanism comprises a clamping sleeve (10); the clamping sleeve (10) is used for supporting the drill rod (14) and synchronously rotates with the drill rod (14); the problems that existing drill rod hole machining precision is not easy to guarantee, a wear-resisting sleeve needs to be replaced frequently, and machining efficiency is affected are solved. 本实用新型公开了一种钻杆孔加工用支承装置，其特征在于，包括：旋转夹持机构；所述旋转夹持机构，包括夹持套（10）；所述夹持套（10），用于所述钻杆（14）的支承，并与所述钻杆（14）同步旋转；解决现有钻杆孔加工精度不易保证，使用耐磨套需经常更换而影响加工效率的问题。