High end electric spindle is a new technology in the field of CNC machine tools that combines machine tool spindle and spindle motor. The combination of linear motor technology and high-speed cutting tool technology has pushed high-speed machining into a new era.

Choose high-end electric spindles with professional quality assurance; Electric spindle is a set of components, including the electric spindle itself and its accessories: electric spindle, high-frequency frequency converter, oil mist lubricator, cooling device, built-in encoder, tool changer, etc. The rotor of the motor is directly used as the spindle of the machine tool. The housing of the spindle unit is the foundation of the motor, and other components are used to integrate the motor with the machine spindle.

At present, with the rapid development and progress of electrical transmission technology (frequency conversion control technology, motor vector control technology, etc.). The mechanical structure of the main transmission system of high-speed CNC machine tools has been greatly simplified, basically eliminating belt pulley transmission and gear transmission. The spindle of the machine tool is directly driven by a built-in motor, which shortens the length of the main transmission chain of the machine tool to zero, achieving "zero drive" of the machine tool.

The motor and machine tool spindle are combined into a transmission structure, which makes the spindle part relatively independent of the transmission system and the overall structure of the machine tool, and can usually be made into a "spindle unit". It is called an "electric spindle". The high-end electric spindle of this utility model has the advantages of compact structure, light weight, low inertia, low noise, fast response speed, high speed, high power, simplified mechanical design, and easy spindle positioning. It is an ideal structure. Spindle unit. The electric spindle bearing adopts high-speed bearing technology, which is wear-resistant and heat-resistant, and has a service life several times longer than traditional bearings.

Precision is chosen as the electric spindle. Due to the integration of the motor into the spindle unit and the high rotational speed of the electric spindle, a large amount of heat is generated during operation, resulting in an increase in the temperature of the high-end electric spindle, thereby reducing its thermal and dynamic characteristics. This will affect the normal operation of the electric spindle. Therefore, some measures must be taken to control the temperature of the electric spindle and keep it constant within a certain value. At present, machine tools generally use forced circulation oil cooling to cool the stator and spindle bearings of the electric spindle.

The cooling oil through the oil cooling device is forcibly circulated to the outside of the spindle stator and the outside of the spindle bearing, thereby taking away the heat generated by the high-speed rotation of the spindle. In addition, in order to reduce the heat generated by the spindle bearings and avoid later maintenance of the electric spindle, it is necessary to lubricate the spindle bearings appropriately.