Stepper motor is by the magnetic rotor iron core through interaction with pulsed electromagnetic fields produced by the stator and rotating, linear stepper motor on the motor internal rotation movement into linear motion. Linear stepper motor, or linear stepper motor, first appeared in 1968 in the United States patent no. 3402308, was awarded to William Henschke, since then, linear stepper motor is widely used in including manufacturing, precision calibration, precision fluid measurement, the precise location of mobile, and many other high precision requirements.
The basic principle of linear stepper motor is adopted engages a screw and nut, take some way to prevent the screw nut relative rotation, so that the screw axial movement. In general, there are two kinds of implement the transformation of pipeline, the first one is inside the motor Zhi a rotor with internal thread, engages with the internal thread of the rotor and the screw and linear motion, the second is the screw as a motor shaft, on the outside of the motor through an external drives the nut and screw meshed to achieve linear motion. As a result, greatly simplifies the design make in many application fields in the case of not to install the external mechanical linkage directly using the linear stepper motor for precision linear motion.
Driven by compared with screw, the screw nut is even more important, linear stepper motor is a bronze injection screw rotor, which considers the physical stability and lubrication performance of patent products, with low thermal expansion coefficient of friction also have some quite excellent performance. Two aspects of the excellent performance, to ensure the high life of linear stepper motor.