If the spindle motor of the engraving machine is hot and hot, if it is not resolved in time, the lubrication and life of the spindle bearing will be affected, and the use of the overall spindle will also be affected.
The interior of a stepper motor is composed of an iron core and a winding coil. The winding has resistance, and the power will generate loss. The loss is proportional to the square of the resistance and the current. This is copper meteorite. If the current is not a standard DC or sine wave, harmonic loss will also occur; There will also be loss in the alternating magnetic field, and its size is related to material, current, frequency, and voltage, which is called iron loss.
Both copper loss and iron loss will be manifested in the form of heat, which will affect the efficiency of the motor. Stepper motors generally pursue positioning accuracy and torque output. The efficiency is relatively low, the current is generally relatively large, and the harmonic content is high. AC motors are serious.
The reasonable range of stepping motor heating and the reasonable degree of motor heating: It mainly depends on the internal insulation level of the motor. The internal insulation performance will be destroyed at high temperature (above 130 degrees). So as long as the inside does not exceed 130 degrees, the motor will not be damaged, and at this time the surface temperature will be below 90 degrees. Therefore, it is normal for the surface temperature of the stepper motor to be 70-80 degrees. The simple temperature measurement method is useful with a spot thermometer, and it can also be roughly judged: you can touch it with your hands for more than 1-2 seconds, and it does not exceed 60 degrees; you can only touch it with your hands, about 70-80 degrees; , then more than 90 degrees.
