How to Select stepping motor and servo motor for printing machine

by:V&T Technologies     2020-01-28
The transmission structure of the printing press only includes linear motor, rotary motor, rotary motor, etc. Among them, the linear motor controls the drive board, the origin switch and the magnetic stripe, the Reading head and the encoder. Rotary Motors control brake pads, rotary encoders, boards, etc. With the continuous development of mechanization, electrification and automation in the production process, various types of motors have emerged. The working principle of these motors is usually the same as that of ordinary Asynchronous Motors and DC Motors. The basic principles are similar, but they have their own special characteristics in performance, structure and production process, and are mainly used in automatic control process. Usually, the power of these motors is not very large, only a small part of one watt, while large motors are only tens or hundreds of watts, which is the range of micro motors. Some belong to stepping motors and some to servo motors. Today, this article discusses that with the rapid development of printing machinery automation, should Printing Machinery choose stepping motor or servo motor? Due to the rapid development of automation, standardization and digitalization of printing machinery, the demand for micromotors in printing machinery is increasing. Currently, various stepping motors and servers are used in printing equipment. This section introduces stepping motors and servo motors in detail. Stepping Motor, usually, the motor rotates continuously and the stepping motor rotates gradually, so it is called Stepping Motor. Each time a pulse signal is input, the motor rotates at a certain angle ( Some stepping motors can directly output linear displacement, called linear motors). Therefore, the stepping motor changes the pulse to angular displacement (Or linear displacement)The actuator. The rotor of stepping motor has multipole distribution. The stator is embedded with a multiphase Star Control winding. The electrical pulse signal is input by a special power supply. Input each pulse signal and the stepping motor rotor moves further by one step. Since the input is a pulse signal, the angular displacement of the output is intermittent, so it is also called a pulse motor. With the development of digital control system, the application of stepping motor in printing machinery will gradually expand. For example, in the CPCI control unit on the Heidelberg offset press in Germany, four groups of 36 steps were used to replace the original ink bucket screws. Servo Motor Servo motor is also called executive motor or control motor. In an automatic control system, a servo motor is an actuator whose function is to transfer signals (Control voltage or phase) Change to mechanical displacement, that is, change the received electrical signal to a certain speed or angular displacement of the motor. Its capacity is usually 0. 1-100 W, 30W or less is commonly used. Servo Motors have DC and AC currents and are used in both AC and DC servo motors in printing machinery. DC servo motors are most commonly used. The structure of the stator of AC servo motor and AC servo motor is basically similar to that of capacitive split-phase single-phase asynchronous motor. The stator is equipped with two positions with a difference of 90 One is the excitation winding Rf, which is always connected with AC voltage Uf; The other is the control winding L, which is coupled to the control signal voltage Uc. Therefore, AC servo motors are also called two servo motors. TAG servo motor
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