What are the reasons for the heating of the aluminum plate engraving machine

　　Aluminum plate engraving machine is also aluminum-copper engraving machine, aluminum plate CNC machining center, etc. Its application range is very wide, suitable for cutting and engraving various aluminum plates, copper plates, and industrial plates. Today, the editor mainly wants to talk to you about the reasons for the heat generation of the aluminum plate engraving machine.

　　1. The inner part of the motor of the aluminum plate engraving machine is composed of iron core and winding coil. The coil will have resistance after power on, and the loss generated is proportional to the resistance and current. The iron core will also produce certain loss in the alternating magnetic field. The loss of the copper core and the loss of the iron core will be released in the form of heat, which causes the aluminum plate engraving machine to generate heat during the processing and manufacturing process.

　　2. The allowable degree of heating of the motor of the aluminum plate engraving machine mainly depends on the insulation level of the motor. The internal insulation performance will only be destroyed at high temperatures (above 130 degrees). So as long as the interior does not exceed 130 degrees, the motor will not be damaged, and the surface temperature will be below 90 degrees at this time. Therefore, the surface temperature of the stepper motor is normal at 70-80 degrees. A simple method of temperature measurement is with a point thermometer, and it can also be roughly judged: it can be touched by hand for more than 1-2 seconds, not exceeding 60 degrees; it can only be touched by hand, about 70-80 degrees; drip a few drops of water quickly Change, then 90 degrees or more.

　　3. When using constant current drive technology, the current of the stepping motor will remain relatively constant at static and low speed to maintain constant torque output. When the speed is high to a certain level, the internal back EMF of the motor will increase, the current will gradually decrease, and the torque will also decrease. Therefore, the heat generated by copper loss is related to speed. The heat is generally high at static and low speeds, and low at high speeds. However, the iron loss (although it accounts for a small proportion) changes in a different situation, and the entire heat generation of the motor is the sum of the two, so the above is only a general situation.

　　4. Although the motor heating generally does not affect the life of the motor, it is unnecessary for most customers to bother. However, severe fever will bring some negative effects. For example, the different thermal expansion coefficients of the internal parts of the motor lead to changes in the structural stress and small changes in the internal air gap, which will affect the dynamic response of the motor, and it will easily lose step at high speed. Another example is that in some occasions, excessive heating of the motor is not allowed, such as medical equipment and high-precision test equipment. Therefore , the heating of the motor of the aluminum plate CNC machining center should be controlled as necessary.