SU920904A1

SU920904A1 - Stepping motor

Info

Publication number: SU920904A1
Application number: SU802953210A
Authority: SU
Inventors: Игорь Григорьевич Ефимов; Александр Владимирович Соловьев
Original assignee: Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина
Priority date: 1980-07-04
Filing date: 1980-07-04
Publication date: 1982-04-15

Description

(5А) ШАГОВЫЙ ДВИГАТЕЛЬ(5A) STEP ENGINE

II

Изобретение относитс к электротехнике , а более конкретно к шаговым двигател м микроперемещений, и предназначено дл использовани в высокочастотных системах автоматики, в частности в высокочастотных станках, в механических сканирующих ycтpoйctвах .The invention relates to electrical engineering, and more specifically to micro-displacement stepper motors, and is intended for use in high-frequency automation systems, in particular in high-frequency machine tools, in mechanical scanning devices.

Известен шаговый двигатель,состо щий из статора и ротора. Статор выполнен П-образным из магнитострикционного материала с обмоткой возбуждени и двум зажимами-опорами,один из которых установлен неподвижно. Якорь двигателей выполнен в виде стержн . Реверс устройства осуществл етс при изменении пор дка чередовани включени зажимов 1.A stepping motor is known, consisting of a stator and a rotor. The stator is made U-shaped of a magnetostrictive material with an excitation winding and two support clamps, one of which is fixed. Anchor engines made in the form of a rod. The reverse of the device is carried out when the order of alternation of switching on the clips 1 changes.

Недостатком известной конструкции вл етс ограниченность величины перемещени рабочего органа, котора определ етс длиной стержн .A disadvantage of the known construction is the limited amount of movement of the working member, which is determined by the length of the rod.

Известен также шаговый двигатель, содержащий статор из ферромагнитно-.Also known stepper motor containing a ferromagnetic stator.

ГО материала, выполненный в виде плоской плиты, и корь в виде электрически деформируемого элемента, жестко соединенного с двум зажимами-опорами , по крайней мере один из KOTOpbix выполнен электромагнитным . 2 . Недостатком известной конструкции вл етс низкое быстродействие ввиду того, что необходимо переfO ключать последовательно три- управл ющих устройством элемента: два зажима и обмотку возбуждени кор .GO material, made in the form of a flat plate, and measles in the form of an electrically deformable element, rigidly connected to two clamps, supports, at least one of KOTOpbix is made electromagnetic. 2 A disadvantage of the known construction is the low speed due to the fact that it is necessary to re-connect the tri-control device of the element in series: two clamps and a field excitation winding.

Цель изобретени - повышение быстродействи .The purpose of the invention is to increase speed.

1515

Claims

This goal is ensured by the fact that in a stepper motor containing a stator of ferromagnetic material, made in the form of a flat plate, and measles in the form of an electrically deformable element rigidly connected to two clamps, at least one of which is made electromagnetic. the mass of one clamp is at least an order of magnitude greater than the mass of the other. Stepper motor is shown on the drawing, general view. The stepper motor comprises a stator 1 of a ferromagnetic material in the form of a flat plate and a bark 2, consisting of an electromagnetic field; bench press 3 with excitation winding 4 and clamp support 5 in the form of a rectangular prism rigidly connected to a magnetostrictive rod 6 equipped with an excitation winding 7. The weight of the clamp support 5 is at least an order greater than V of the mass of the electromagnetic clip support 3 In the initial state, it is fed to the winding of the clamp-support 3, the latter is attracted to the stator 1 and rests on it, due to which the left end of the motor is fixed. When current is passed through the excitation winding 7, the magnetostrictive ingoing rod 6 is reduced (with a negative magnetostriction coefficient), which carries the clamp-support 5 to the left by some value dB. Then the clamp-support 3 is released. Switching off the current in the excitation winding 7 leads to length recovery magnetostrictive rod 6 and the movement of the clamp of the support 3 from right to left by the value o According to the law of conservation of the amount of movement where t, is the mass of the electromagnetic clamp-support 3; Pin is the mass of the clamp support 5; if is the change in the length of the magnetostrictive rod 6. Since the mass n (j of the clamp-support 5 is much greater than the mass t of the electromagnetic clamp-support 3, then the expression (1) takes the form (. Thus, the clamp-support 5 fixes the right end of the magnetostrictive rod 6, when the electromagnet clamp support 3 is released. The stepping motor makes one iuar. The steps are repeated in the manner described. The reverse of the motor is performed by changing the order of the current in the excitation winding of the clamp 3 and the winding 7 of the magnetostrictive rod 6. In contrast to the known device, the switching device sequentially switches in time not three, but two control motor elements (electromagnetic clamp-support and excitation winding, magnetostrictive rod), which allows the motor to perform steps with greater frequency, i.e. increase claims The invention The stepper motor, containing a stator of ferromagnetic material, made in the form of a flat plate, and measles in the form of an electrically, deformable element rigidly connected to two clamps pores, at least one of which is made electromagnetic, characterized in that, in order to increase speed, the mass of one clamp is at least an order of magnitude greater than the mass of the other. Sources of information taken into account during the examination 1. USSR author's certificate IP 229913, cl. H 02 N 11/00, 196.

2. The USSR author's certificate number 5 + 60 9, cl. H 01 H 01 L 1/10, (prototype).