Linear motor is a kind of converting electrical energy directly into linear motion of mechanical power transmission device. It can save a lot of intermediate transmission mechanism, speed up the system to reflect, improve the system accuracy, so widely used. The types of linear motor can be divided into the form of the structure; Unilateral flat, bilateral flat type, disc type, type cylinder (Or tube type)And so on; According to the principle of work can be divided into: dc, asynchronous, synchronous, and step by step, etc. Here only the simple structure, easy to use, reliable operation of the linear induction motor are introduced briefly. Structure mainly includes the linear induction motor stator, motion and linear motion return roller three parts. In order to guarantee within the scope of stroke has the good electromagnetic coupling between the stator and moving, the length of the core of the stator and dynamic range. The stator can be made into a short long stator and stator two forms. Because of the long stator high cost structure, high operation cost, so rarely used. Linear motor and rotating magnetic field, the stator iron core is composed of silicon steel sheet pile, surface open alveoli; Slots are embedded in the three phase, two phase or single phase winding; Single phase linear induction motor can be made to cover pole, also can through the condenser phase shift. Linear induction motor dynamic son has three forms: (1)Magnetic move son son is made of magnetic materials (Steel plate), which not only plays a role of magnetic circuit, son conductive role as cage again. (2)Non-magnetic, move the son is by nonmagnetic materials (Copper)Made, the main conductive role, this type of motor air gap is bigger, excitation current and big loss. (3)Active cell permeability materials covered a layer of conductive materials, magnetic materials only as a magnetic circuit permeability effect; Squirrel-cage winding covered conductive material. For magnetic linear asynchronous motor has simple structure, moving not only as the permeability, the conductive body, and even can be used as structural elements, its application prospect. The working principle of linear induction motor and rotary asynchronous motor, the stator winding is connected to the ac power, after passing a polyphase alternating current, is in the air gap to produce a smooth traveling wave magnetic field (When the radius of a rotating magnetic field is very big, became a linear movement of the traveling wave magnetic field)。 The make linear movement along the air gap magnetic field, at the same time, in the active cell conductor induction electromotive force, and generate an electric current, the current and the traveling wave magnetic field interact to produce asynchronous driving force, make the child make linear movement along the direction of traveling wave. If the linear induction motor stator winding of power phase sequence change, the traveling wave magnetic field direction will, in turn, according to this principle, can make the linear induction motor for reciprocating linear motion. Linear induction motor is mainly used in large power of linear motion mechanism, such as automatic door opening and closing device, lifting, transfer and lifting machinery and equipment, vehicles, especially for high speed and speeding transportation. Due to the traction or impetus can be produced directly, not need moving parts, no friction, no noise, no rotor fever, is not affected by centrifugal force, etc. Therefore, its application will become more and more widely. Linear synchronous motor with superior performance, applications and linear induction motor is the same, have replaced the trend. Linear stepper motor is applied to CNC plotter, recorder, CNC drawing machine, CNC cutting machine, disk storage, precise positioning, and other equipment. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone:
