Collet chuck type tailstock of modified friction welding machine

The utility model relates to a collet chuck type tailstock of a refitted friction welding machine, which comprises a machine base fixed on a machine body, a mounting cylinder arranged on the upper surface of the machine base in a sliding manner, and a main oil cylinder fixed on the upper surface of the machine base and driving the mounting cylinder to move towards the direction close to a main shaft, a clamping mechanism used for fixing parts is arranged in the mounting barrel and comprises an auxiliary oil cylinder fixed to the end of the mounting barrel and close to one end of the main oil cylinder, a connecting rod is fixed to an output shaft of the auxiliary oil cylinder, and the connecting rod and the mounting barrel are coaxial. The end, away from the auxiliary oil cylinder, of the connecting rod is connected with a spring chuck used for fixing a part. The clamping device has the effect of conveniently clamping parts. 本实用新型涉及一种改装摩擦焊机的筒夹式尾座，包括固定在机体上的机座、滑移设置在所述机座上表面的安装筒以及固定在所述机座上表面且驱动所述安装筒朝着靠近主轴方向运动的主油缸，所