Board type furniture commonly used cutting machine so the drive motor is divided into two kinds, step motor and servo motor. Equipment running speed related to control system, it also related to the drive motor. stepper motor is the electrical pulse signal into angular displacement or line open loop control elements of displacement. In the case of the overload, motor speed, stop position depends only on the pulse signal frequency and pulse number, and not affected by load change. refers to the servo motor servo control of mechanical components in the system operation of the engine, is a kind of subsidy motor indirect variable speed device.
so what cutting machine configuration is stepping motor and servo motor good?
1. First of all, from the control precision, the stepper motor control precision is the step Angle of 3 -5% and not cumulative, its speed is proportional to the pulse frequency, also, that is, the higher the frequency the faster the speed, high velocity, acceleration is too big, cause sometimes & other; Throw the step & throughout; Leading to a motor & other; Jammed & throughout; ； After a motor shaft servo motor control precision rotary encoder. Encoder calibration accuracy is higher, the more servo motor for the closed loop control system, can he received & other; Electrical & throughout; By motor internal conversion again by the encoder feedback to drive, drive directly on the motor feedback signal sampling, general won't appear stepper motor & other; Throw the step & throughout; Or & otherOvershoot & throughout; Phenomenon, more stable performance. 2. Improper control of step motor if will occur & otherResonance & throughout; Low speed oscillation phenomena also is what we say, is in running of motor & other; Oscillation & throughout; The motor is very bad; And servo motor ac servo control system has the function of resonance suppression, so that even in the low speed also won't appear the resonance phenomenon. 3. Stepper motor with high speed and the decrease of output torque, but also fast, the higher the speed drop is servo motor constant torque output, not with increasing rotating speed, torque and constant power output in the rated speed. 4. Servo motor has stronger ability to withstand overload, can overcome the load inertia moment start torque, stepper motor often do not have the ability to do this, so should choose inertia moment when selecting larger models, but often it is not.
on the performance of the servo motor is better than that of step motor, the stepper motor wiring, simple programming, less failure, torque also is enough big, stepper motor can achieve 6000 pulse, highest speed 3000 RPM, general stepping motor also can reach 600 RPM, the speed will be enough for some of the common equipment, and so in the choice to select cutting machine control system and configuration to the selected drive motor into consideration, if you split the requirements of the machine is not high consider stepping motor, step motor and servo motor price difference, after all, is not a bit, reasonable selection, cost control, economical and practical.
