Electric spindleIt is a new technology that has emerged in the field of CNC machine tools in recent years, which integrates machine tool spindles and spindle motors. The spindle is a set of components that includes the electric spindle itself and its accessories: electric spindle, high-frequency frequency conversion equipment, oil mist smoother, cooling equipment, built-in encoder, tool changer, etc. This transmission structure mode of "combining the spindle motor and the machine tool spindle" makes the spindle components relatively independent from the transmission system and the whole structure of the machine tool, so it can be made into a "spindle unit", commonly known as "Electric Spindle" (Motor Spindle), which is characterized by high speed, high precision, low noise, and the structure with a locking port on the inner ring is more suitable for spray smoothness.

Electric spindles are generally used in CNC machinery, while mechanical spindles are used in general machine tools. Because low-cost lathes cannot use electric spindles due to high costs. However, high-end lathes are not suitable for high-precision lathes because they require high spindle accuracy and the electric spindle, which generates a large amount of heat, can easily undergo thermal deformation and then change the height of the spindle box.

Electric spindle is a new technology that has emerged in the field of CNC machine tools in recent years, which integrates machine tool spindle and spindle motor. The main transmission system of high-speed CNC machine tools has eliminated pulley transmission and gear transmission. The spindle of the machine tool is directly driven by an internal electric motor, which shortens the length of the main transmission chain of the machine tool to zero, achieving "zero transmission" of the machine tool.

The general spindle refers to the axis on the machine tool that drives the workpiece or tool to rotate. The main shaft components are usually composed of a main shaft, bearings, and transmission parts (gears or pulleys). In machines, it is mainly used to support transmission parts such as gears and pulleys, transmit motion and torque, such as machine tool spindles; Some are used to clamp workpieces, such as spindles