High end electric spindleIt is a new technology that integrates machine tool spindles and spindle motors in the field of CNC machine tools. Combining linear motor technology and high-speed tool technology, it has pushed high-speed machining into a new era. The selection of 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 Wait. The rotor of the electric motor directly serves as the spindle of the machine tool. The housing of the spindle unit is the base of the motor, and other components are used to integrate the motor and the machine spindle.

Currently, with the rapid development and progress of electric drive technology (frequency control technology, motor vector control technology, etc.), the mechanical structure of the main drive system of high-speed CNC machine tools has been greatly simplified, basically excluding pulley drive and gear drive. The spindle of the machine tool is directly driven by the built-in motor, which shortens the length of the main transmission chain of the machine tool to zero, achieving "zero transmission" of the machine tool. The spindle motor and machine tool spindle are combined into a transmission structure, so that the spindle components are 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".

This high-end electric spindle 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, making it an ideal structure. Spindle unit. The electric spindle bearings adopt high-speed bearing technology, which is wear-resistant, heat-resistant, and has a service life several times longer than traditional bearings. Selection of electric spindleShunyuan PrecisionDue to the integration of the motor into the spindle unit and the high speed of the electric spindle, a large amount of heat is generated during operation, resulting in an increase in 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, certain measures must be taken to control the temperature of the electric spindle so that it remains constant within a certain range. 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 main shaft stator and the main shaft bearing, thereby taking away the heat generated by the high-speed rotation of the main shaft. In addition, in order to reduce the heat generated by the spindle bearings and avoid the need for later maintenanceElectric spindle maintenanceProper lubrication must be applied to the spindle bearings.