Electric spindleIt is a power assist device for CNC machining centers. The electric spindle drives the rotation of the workpiece to process the rotating body of the workpiece. It is an important guarantee for high-speed and high-precision machining of CNC machining centers. Therefore, the maintenance methods and techniques for spindle faults in CNC machine tools are also related to CNC machining. The knowledge that central operators and maintenance personnel must possess.

We know that due to the different motion modes and states of the electric spindle, CNC machining centers can be divided into vertical machining centers and horizontal machining centers. Different types of CNC machining centers use different types of spindles, but generally speaking, the spindle system of CNC machine tools can be divided into spindles with main gears and main gears according to different transmission systems. Belt driven spindle dual motor drive spindle and motor integrated with spindle

Common faults of electric spindle:

1. Overloading

Reason for malfunction: Excessive cutting amount, frequent positive and negative rotation, spindle motor malfunction, spindle driver malfunction.

2. The electric spindle does not rotate

Reason for malfunction: Spindle drive failure, CNC unable to output speed signal. Spindle motor failure, spindle drive failure, and damaged transmission belt.

3. The speed of the electric spindle deviates from the instruction value

Reason for malfunction: Motor overload. The spindle speed command output of the CNC system has a problem. The speed measurement equipment has malfunctioned or the speed feedback signal has been interrupted.

4. Abnormal noise and vibration of the electric spindle

Reason for malfunction: Usually, there are problems with the spindle drive during deceleration, such as a regeneration circuit failure in the AC frequency converter.

The most commonly used spindle currently is one with an integrated motor and spindle. This type of spindle is also commonly referred to asElectric spindleThe motor itself is also the spindle. The main transmission method greatly simplifies the structure of the spindle housing and spindle, improves the rigidity of the spindle components, but the output torque of the spindle is small, and the heating of the motor has a significant impact on it. Main axis. By using the spindle of many CNC grinders in this way, the speed can reach tens of thousands of revolutions per minute. Usually, this type of spindle motor is cooled by a circulating water cooling system.