CNC milling machine motorized spindle

CNC milling machine motorized spindle is a device that combines the motor with a high precision spindle. In the electric spindle, the rotor of the motor is directly used as the main shaft of the milling machine, which saves the mechanical drive link of the main shaft, improves the drive accuracy of the main shaft, and reduces noise and vibration. It is widely used in high speed and high precision CNC milling machine. As shown in the diagram, the application of motorized spindle in 5 axis CNC milling machine.

Motorized spindle drive by the inverter, the maximum speed of more than 100000r/min. The main shaft of the motor has a cooling pipe, and the motor is recirculated cooled through an external heat exchanger. The main shaft bearings are lubricated by aerosol, and the lubricating oil is regularly and quantitatively pressed into the main shaft bearing by compressed air. The milling machine motorized spindle is equipped with an encoder for spindle speed and position detection. The electric spindle is also provided with a temperature sensor to detect the temperature of the motor. Some electric spindles are also equipped with axial displacement sensors to detect the axial displacement caused by the thermal deformation of the spindle and compensate by the numerical control system. The rear end of the milling machine motorized spindle is provided with a loose and tight cylinder, and the handle is clamped and loosened by a pull rod, a disc spring and a claw.