Vertical friction welding machine

The invention belongs to the field of welding equipment and relates to a vertical friction welding machine. The vertical friction welding machine comprises a base, a lower rack and an upper rack are arranged above the base, the lower rack and the upper rack are connected and fixed through stand columns, a lower hydraulic cylinder is arranged at the upper portion of the lower rack, an upper hydraulic cylinder is arranged at the lower portion of the upper rack, and the axis lines of the lower hydraulic cylinder and the upper hydraulic cylinder are coincident; and a rotary tool is arranged between the lower rack and the upper rack, the rotary tool rotates around one stand column, a steel claw clamping device is arranged above the rotary tool, one end of the steel claw clamping device is provided with a clamp positioning hole, and one stand column passes through the clamp positioning hole and is fixed to the steel claw clamping device through a shaft sleeve. The vertical friction welding machine can directly weld