Basic step motor is composed of www.dongfeng-motor.com magnetic rotor iron core
through the stator with pulsation produced by the stator interaction between electromagnetic field
and produce rotation.Linear motor rotation movement into linear motion,to complete the transformation of precision depends on the step Angle of the rotor and the selected method.Linear stepper motor,or called linear stepper motor,first appeared in 1968 Patent no.3402308,was awarded to William Henschke.Since wholesalemotor.blogspot.com then,linear stepper motor is applied to
include manufacturing,precision alignment and precision of flow measurement,high demand areas.Use
thread precision of three-phase asynchronous motor,depending on the pitch.Install a nut in the center of the linear motor rotor,accordingly Use a screw nut with the mesh,in order to make the screw axial movement,must in some way to prevent the screw rotation with rotor components.Constrained due to the screw rotation,when the water pump motor rotor rotates,screw for linear motion.Both inside the motor with fixed screw shaft components and on the external thread shaft use can't rotate but axial freely Mobile nut,is a typical method of rotational restraint.To simplify the design,inside the motor to realize linear transformation is meaningful.The method greatly simplifies the design and make in many application fields in the motor lamination case of not to install the
external mechanical linkage directly using the linear motor for precision linear movement.The initial
linear motor has adopted A combination of a ball nut and screw.Ball screw to improve the efficiency
of above 90%,and according to thread condition,the efficiency of the trapezoidal thread with only 20%
to 20%.Although to convert rotary motion to linear motion ball screw is a kind of efficient
method,but the ball nut to calibration requirement is very high,and large,expensive.As a result, In
most applications,the ball screw is not a practical solution.
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