What Is The Reason Why The CNC Vertical Lathe Spindle Motor Burns?

It is a very common fault that the CNC vertical lathe spindle motor will burn out. So what is the cause? Please see the detailed introduction below:
1. Motor overheating
Both the drive motor and the spindle motor will generate heat during use. Generally speaking, the temperature is cooled by fan heat dissipation. However, in some cases, such as high speed or long-term operation, the internal temperature of the motor will rise and exceed the appropriate temperature. temperature range, the motor will overheat and burn out.
2. Poor insulation of motor rotor
Poor motor rotor insulation is a common cause of spindle motor burnout. The insulation of the motor rotor separates the conductive part from the insulating layer section. During the rotation of the motor, the centrifugal force affects the insulating layer, resulting in poor insulation between the first electrical section of the rotor and the second electrical section of the rotor, causing current to flow directly through the conductive section. , that is, the first electrical section of the rotor is directly connected to the second electrical section of the rotor instead of flowing along the path around the rotor. This will cause the current inside the motor to become chaotic, causing high temperatures and sparks.
3. Motor stalled
Motor stalling is also one of the causes of spindle motor burnout. When insufficient torque is detected inside the motor, the power supply will be automatically cut off and no signal will be output, thereby avoiding burnout. However, if this problem is not dealt with in time, the motor will not rotate, generate more heat, and eventually cause the motor to burn out.
4. Poor lubrication
Another common cause of spindle motor burnout is insufficient lubricating oil or failure to replace lubricating oil in time. If the spindle motor is short of oil for a long time or uses excessively old oil, the lubrication effect will be greatly reduced, leading to bearing failure, the motor will generate greater friction, and thus generate more heat, eventually leading to burnout.
In short, in order to prevent the spindle motor from malfunctioning and burning down, we should frequently check and maintain the equipment, including checking the use status of the motor, replacing lubricating oil, and regularly removing dust and dirt inside the motor. Only in this way can we better protect the safety and stability of the spindle motor and thus better provide services for production and processing.