Bipolar driving linear motor

Abstract

The invention relates to a bipolar driving linear motor belonging to the field of electric drive. A secondary part of the linear motor is in a U-shape groove shape, and permanent magnetic materials are attached to the inner sides of both sides of the U-shaped groove; a primary part comprises a plurality of iron core blocks which are positioned among the permanent magnetic materials positioned at both sides of the U-shape groove, the parts which can move following a straight line move along the U-shape groove, and the circumference of each iron core block is provided with a circulating cooling passage. The bipolar driving linear motor has high output power and high magnetic field utility ratio, thereby having high efficiency; the bipolar driving linear motor is easy to manufacture a low-speed high-thrust linear motor; the bipolar driving linear motor is provided with the circulating cooling passage, thereby having good radiating condition without causing the heat distortion of a machine tool and being beneficial to enhancing the processing precision of the digital control machine tool; the secondary part is in a U-shape groove shape, the permanent magnetic materials are attached to both sides of the U-shaped groove, the up and down position relation between the primary part and the secondary part is loosely required, air gaps of a magnetic field are more than 1 millimeter, and the precision is loosely required, thus the bipolar driving linear motor has convenient processing and assembly.

Description

technical field [0001] The invention relates to a bipolar driven linear motor, which belongs to the linear permanent magnet synchronous AC motor in the field of electric drive. Background technique [0002] The current commonly used linear motor is similar in principle to the ordinary motor, which can be regarded as a cylindrical motor that is cut and flattened along the radial direction. The part that is wound with a wire to generate a moving magnetic field is called the primary, and the part that is induced by the moving magnetic field is called the secondary. The types are also the same as ordinary motors, including DC linear motors, AC permanent magnet synchronous linear motors, AC induction asynchronous linear motors, stepping linear motors, etc. [0003] Linear motors can be used as power components to directly generate linear motion in many occasions, instead of having to go through gear racks, screw nuts and other mechanisms to generate linear motion like cylindrica...

AI Technical Summary

Problems solved by technology

[0007] The second purpose of the present invention is to overcome the disadvantages that the silicon steel sheet of the prior art is integral, difficult to process, and cannot generate an air gap magnetic field at both ends of the winding, and the iron core block used is made of silicon steel sheets, and the wires are wound on The waist of the iron core block, the air gap magnetic field is generated at both ends of the iron core block

Images