The spindle operation on traditional CNC machine tools mainly drives the intermediate variable speed device and transmission device, such as gears, belts, and couplings, in the process of exerting the motor driving function. This is called the "mechanical spindle", also known as the separated spindle and direct spindle. Compared to this traditional spindle,Electric spindleIt has the following advantages.

(1) When the spindle is running, it is driven by an internally installed motor, without the need for intermediate variable speed and transmission devices. Its design structure is simple and compact, which can improve operational efficiency and high precision. During operation, there will be no significant noise and minimal vibration.

(2) By fully utilizing AC frequency conversion technology, the electric spindle can achieve stepless speed change within the rated speed range. During the operation of the machine tool, regardless of any working conditions or load changes, the electric spindle has good adaptability.

(3) When the built-in motor is running, it can control the closed-loop vector, effectively adjust the power according to the control instructions, and flexibly control the operating speed and output torque of the driving device. Electric spindles can meet various high-power requirements, such as high torque, low-speed heavy cutting, or high-speed precision machining. Electric spindles can play a good role and achieve accurate stopping while meeting the C-axis transmission function.

(4) Electric spindle can run at high speed, with good stability and high dynamic accuracy, making the cutting speed and machining accuracy of CNC machine tools higher.

(5) Due to the fact that the operation of the electric spindle does not require intermediate transmission links, its stability is higher and it will not be affected by external impacts. The bearings of the spindle do not need to bear large dynamic loads, which can extend the precision life.

(6) The electric spindle integrates the motor and spindle into a unit, enabling the series production of electric spindles, forming a certain scale, and making production more specialized. As a functional component of CNC machine tools, the electric spindle has also entered the market as a commodity. Enterprises can choose electric spindles according to the operational needs of CNC machine tools, which will promote the development of modular machine tools.