At present, most CNC cutting machine companies choose to use a stepper motor as their first choice if they do not have special requirements when manufacturing a CNC cutting machine. What is the reason for this? Xiao Bian asked the engineers of the technical department to know that the original stepper motor has the unparalleled advantages of other motors, mainly in the following aspects: Deep Hole Drilling Machine,Cnc Hole Punching Machine,Hole Drilling Machine,Deep Drilling Machine Shandong ShuoFang Environmental Technology Co., Ltd. , http://www.chinafincnc.com
1, control performance is good. As a CNC cutting machine control system, it must have high control capabilities. Stepper motors start, stop, and flip are all completed within a few pulses. When running within a certain frequency range, any movement method will not be lost. Therefore, it is also widely used in CNC machine tools.
2. The stepping value of the stepping motor is not affected by the external environment such as the voltage and temperature during use.
3, the error of using the stepping motor will not be accumulated for a long time. Since CNC cutting machines require high precision, it is necessary to ensure that the error is small enough, and the stepper motor exactly meets this point.
Because the stepping motor stepping inside is the core and the winding coil. Winding resistance, power loss will occur, and the stepper motor generally seeks positioning accuracy and torque output, the efficiency is relatively low, the current is generally large, and the harmonic components are high, the frequency of the current alternating with the speed, and thus stepping The motor generally has a fever and the condition is more severe than that of an ordinary AC motor. Speaking of here, there are many customers will ask, since the stepper motor will heat during use, then the impact of the life of the CNC cutting machine is not it?
Although the CNC cutter motor heat generally does not affect the life of the motor, it does not need to be ignored by most customers. However, severe fever can have some negative effects. For example, if the thermal expansion coefficients of the internal parts of the motor lead to changes in the structural stress and slight changes in the internal air gap, the dynamic response of the motor will be affected, and high speeds will be easily lost. Therefore, the necessary control of the heating of the motor should be carried out. So how do we control the heat of the motor?
To reduce the heating of the motor, it is to reduce copper loss and iron loss. Reduce the copper loss in two directions, reducing the resistance and current, which requires the selection of the type of electric resistance as small as possible and the rated current of the motor is small, for the two-phase motor, the motor can be connected in series without the parallel motor; reduce iron loss There are not many ways to do this. The voltage level is related to it. Although the motor driven by high voltage will bring high speed characteristics, it will also increase the heat generation. Therefore, we should choose the appropriate drive voltage level, taking into account the high speed, stability and heat, noise and other indicators.
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