Cooling system of ball screw

A cooling system of a ball screw mainly comprises the following components: the ball screw which is provided with a screw that is provided with a rod flow channel that extends axially; the motor unitis provided with a motor, the motor is provided with an output shaft used for outputting rotating power, and the output shaft is provided with an axial flow channel extending in the axial direction; the coupler is used for coaxially connecting the screw rod of the ball screw with the output shaft of the motor unit so as to move simultaneously; the flow channel communicating unit is used for communicating a rod flow channel of the ball screw with an axial flow channel of the motor unit; therefore, the cooling liquid not only can flow in the screw, but also can flow in the output shaft of the motor, so that heat energy of the motor can be prevented from being transmitted to the screw, and the cooling benefit is improved. 一种滚珠螺杆的冷却系统，其主要包含有：一滚珠螺杆，具有一螺杆，该螺杆具有一轴向延伸的杆流道；一马达单元，具有一马达，该马达具有一用以输出旋转动力的输出轴，该输出轴具有一轴向延伸的轴流道；一联轴