SU845237A1

SU845237A1 - Stepping motor

Info

Publication number: SU845237A1
Application number: SU792766503A
Authority: SU
Inventors: Александр Иванович Краснопевцев
Original assignee: Научно-Исследовательский Институтчасовой Промышленности
Priority date: 1979-05-17
Filing date: 1979-05-17
Publication date: 1981-07-07
Also published as: SU845236A2

Description

(54) ШАГОВЫЙ ЭЛЕКТРОДВИГАТЕЛЬ(54) STEP ELECTRIC MOTOR

1one

Изобретение относитс к электротехнике, в частности к шаговым электродвигател м, которые наход т широкое применение в дискретном электроприводе.The invention relates to electrical engineering, in particular to stepper motors, which are widely used in a discrete electric drive.

Известны шаговые электродвигатели, име юш,ие статор со стержнем, на котором установлена обмотка и который имеет полюсные наконечники, и с двум посто нными магнитами , снабженными наконечниками. Снаружи статора находитс ротор с вно выраженными полюсами 1.Stepper motors are known that have a stator with a rod on which a winding is installed and which has pole pieces, and with two permanent magnets fitted with tips. Outside the stator is a rotor with pronounced poles 1.

Размещение магнитной цепи статора внутри ротора существенно ограничивает возможности улучшени динамических характеристик двигател .Placing the stator magnetic circuit inside the rotor significantly limits the possibilities for improving the dynamic characteristics of the engine.

Наиболее-близким по технической сущности к предложенному электродвигателю вл етс шаговый электродвигатель, содержащий статор с магнитной системой, имеющей два параллельных. стержн с обмотками , установленные по обе стороны стержней и примыкающие к ним полюсные наконечники , снабженные зубцами, выт нутыми вдоль оси двигател , установленные на полюсных наконечниках стержней два намагниченных в направлении, параллельном оси, пр моугольных посто нных магнита, снабЖенных полюсными наконечниками, выполненными в виде платы, на которой закреплен зубчатый кольцеобразный сердечник, и размещенный между стержн ми ротор с зубцами , направленными параллельно его оси и имеющими на концах выступы, напротив которых размещены зубцы кольцеобразного сердечника, помещенного внутри ротора 2.The closest in technical essence to the proposed electric motor is a stepping electric motor containing a stator with a magnetic system having two parallel ones. a rod with windings, mounted on both sides of the rods and adjacent pole tips, provided with teeth extended along the motor axis, mounted on the pole tips of the rods two magnetized in a direction parallel to the axis, rectangular permanent magnet fitted with pole tips made in the form of the board on which the toothed ring-shaped core is fixed, and a rotor placed between the rods with the teeth directed parallel to its axis and having protrusions at the ends opposite which p zmescheny tine annular core placed inside the rotor 2.

Однако этот двигатель имеет одностороннее направление вращени и не может обеспечить непрерывного движени ротора.However, this engine has a one-way direction of rotation and cannot provide continuous rotor movement.

Цель изобретени - расширение функ10 циональных возможностей двигател за счет обеспечени как дискретного, так и непрерывного вращени ротора с его реверсированием .The purpose of the invention is to expand the functional capabilities of the engine by providing both discrete and continuous rotor rotation with its reversal.

Claims

15 This is achieved by the fact that in the proposed engine both cores are equipped with a common T-shaped tip located on one side of both cores, which is adjoined by one of the permanent magnets, and two core windings are installed on each core, with the pole pieces being shifted between them at 120 degrees, and the rotor is bipolar. FIG. 1 shows the described engine in section, a general view; in fig. 2 - the same in terms of; in fig. 3 is a schematic representation of the relative positions of the stator and the rotor when pulses are applied to different sections of the motor winding. The motor consists of a board 1 and a board 2, forming pole tips of permanent magnets 3i between which rods 4 are located with winding sections 5, 5, 5 and pole tips b, 6 and 6, having teeth extended in the direction of the motor axis. The pole tips 6 and b are L-shaped and placed on one side of the rods, one on each of them, and the third pole tip B is T-shaped and placed on the opposite side on two rods. The circuit 2 is fixed ring-shaped core 7 with teeth 8, located on the outer surface. A rotor 9 with teeth 10 with protrusions 11 is mounted between the ends. The bearings of the rotor 9 are placed in core 7 and plate 1. Ring 13 with teeth 14 mounted concentrically to ring-shaped core 7 can be pressed into plate 2. On ring-shaped core 7, an additional gear ring 15 can be installed, forming a radial magnetic gap with pole tips b. The width of the teeth of the ring 15 is equal to the width of the teeth of the pole pieces 6. The electric motor operates as follows. In the absence of current in all sections of the winding, the rotor will be fixed by the moment arising from the interaction of the protrusions 11 with the teeth 14 along which the magnetic flux of the permanent magnets 3 pass. For, taking into account the polarity of the magnets 3, a moment arises, under the action of which the rotor 9 takes the position corresponding to FIG. Behind. The supply of a pulse to interconnected sections 5 with the direction of the current in them, as indicated in FIG. 36, causes a new flow distribution, by which the rotor 9 moves and takes the position shown in FIG. 36. By analogy, the rotor 9 occupies the position indicated in FIG. Sv, while the current pulse to section B was carried out in the direction of the arrow. Changing the polarity of the pulses when they are fed into the winding sections in the same order leads to a further rotation of the rotor counterclockwise (Fig. 3g-e). A change in the order of pulses in the winding sections, for example, windings 5, 5, 5, will cause the rotor to rotate clockwise, i.e. will provide reverse engine operation. Due to the presence of the magnetic flux of the permanent magnets, when the motor winding is supplied with three-phase current, the torque will act on the rotor in any position, which in this case ensures the continuous rotation of the rotor, which, together with the possibility of its reversal, significantly extends the functionality of the described motor Compared with known engines. DETAILED DESCRIPTION A stepper motor comprising a stator with a magnetic system having two parallel rods with windings, mounted on both sides of the rods and adjacent pole tips, provided with teeth extended along the motor axis, mounted on the pole tips of the rods two magnetized in the direction parallel to axes, rectangular permanent magnet, equipped with pole pieces, made in the form of a board on which a toothed ring-shaped core, and placed between A rotor with rods with teeth directed parallel to its axis and having protrusions at their ends opposite to which the teeth of the ring-shaped core are placed — placed inside the rotor, characterized in that, in order to enhance the functionality by providing both discrete and continuous rotor rotation with its reversal, both cores are provided with a common T-shaped pole tip placed on one side of both tips to which one of the permanent magnets is attached, and on each core e installed two winding sections, with the pole pieces shifted by 120 degrees with each other, and the rotor is bipolar. Sources of information taken into account in the examination 1. USSR author's certificate number 544063, cl. And 02 K 37SC 1974.

2. USSR author's certificate for application No. 2620331 / 24-07, cl. H 02 K 37/00, 1978.

(OS winding S)

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