SU1410215A1 - Electric motor - Google Patents

Abstract

The invention relates to electrical engineering and can be used in precision drives of metalworking machines. The aim of the invention is to simplify the construction and increase smoothness of movement. The electric drive contains the magnetic circuit 1 of the stator, the winding 2 core, romo 3 of the stator, ring permanent magnets 4, rotor 8 and the running element 10. Magnetic nuts are made in the form of cylinders with ridges forming alternating poles. The magnetic core 1 with a winding 2 and magnets 4 forms a synchronous motor, the rotor of which is a nut. When the magnetic flux from the magnets 4 is closed through the rotor 8 and the driving element 10, an electromagnetic screw-nut pair is formed, which makes it possible to obtain an electric drive for rotational and translational motion with a simple compact design. 1 il. W WITH 1C

Description

The invention relates to electrical engineering and can be used in precision drives of metal feeds of machine tools. j The object of the invention is to increase reliability and smooth movement.

1 The drawing shows the scheme of the proposed electric motor.

The drive contains laminated magnetic circuit 1 stator winding

2 box, rmo 3 stator,: annular

g: posed-magnets 4, bearing 5, bearings 6, shaft 7, rotor i, non-magnetic sleeve 9 and shchandri Iesky element of translational motion; 10 (guides not shown | l).

The permanent magnets 4 are magnetized radially and oppositely. Between them and the rotors 8 there is a small parasitic air gap. The non-magnetic sleeve 9 combines the rotors 8 into a rigid rotor. The rotors 8 are in the form of hollow cylinders with nail-shaped hubs facing the stator magnet guide 1 and forming alternating dissimilar rotor poles.

Between the rotors 8 and the driving element 10 are progressive movement and there is a large air gap, which ensures the contactlessness of the stroke of the element 10.

A screw thread is made on the inner surface of the rotors 8 and on the outer surface of the chassis element 10 with the same step and stroke.

Most of the magnetic flux of the permanent magnets is closed in series: permanent magnet 4, parasite-gap of the rotor 8, working air gap between the screw threads, x | elemental element 10 of the translational motion and further along the same path to the frame 3 of the stator. Part of the magnet14102152

a constant magnet 4 flux is closed along the circuit: a permanent magnet 4, a parasitic gap of the rotor 8, legs - /

with coarse poles, working air gap, magnetic circuit 1 stator, rmo 3 stator.

The electric vehicle operates as follows.

10 When applied to the winding of the core 2 of a multiphase voltage system, a rotating magnetic field occurs, which carries the rotor 8 along with it. As they rotate, an axial displacement occurs

15 thread rotors 8 relatively, thread

the traveling element 10, which moves in translation, and its position corresponds to the minimum of the magnetic resistance between the rotors 8 and the driving element 10 in translational motion.

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Claims (1)

Invention Formula An electric motor containing a stator with windings, two axial hollow rotors with teeth on the outer surface, inside which there is an element of translational movement, on the outer surface of which and on the inner surface of the rotors there is a screw thread with the same pitch and stroke, which differs from In order to increase reliability and increase smoothness of movement, the stator is equipped with two radially and oppositely magnetised ring permanent magnets and a non-magnetic gasket that rigidly connects the rotors, teeth to toryh formed beak and directed towards each other, the element moving translatory vsholnen single ferromagnetic wherein it i.na rotors screw thread is formed with a gap ... Invention Formula An electric motor containing a stator with windings, two axial hollow rotors with teeth on the outer surface, inside which there is an element of translational movement, on the outer surface of which and on the inner surface of the rotors there is a screw thread with the same pitch and stroke, which differs from In order to increase reliability and increase smoothness of movement, the stator is equipped with two radially and oppositely magnetised ring permanent magnets and a non-magnetic gasket that rigidly connects the rotors, teeth to toryh formed beak and directed towards each other, the element moving translatory vsholnen single ferromagnetic wherein it i.na rotors screw thread is formed with a gap ...