SU922919A1 - Stepping motor - Google Patents

Description

The invention relates to electrical engineering, in particular to stepper motors operating on the basis of an executive electromechanical element and is intended for use in high-precision automatic guidance systems, in particular, in high-precision machine tools, in mechanical scanning devices, etc.

Known magnetostrictive stepping motor, consisting of ¹

stator and anchor. The stator is made of a magnetostrictive material with an excitation winding and two clamps, one of which is fixed, and the anchor is made in the form ^{of a} rod. The forward stroke and reverse of this device are carried out by changing the order of alternation of the inclusion of clamps 01.

The disadvantages of this design ³

is that such a device has a limited amount of movement of the working body, which is defined

is divided by the length of the rod, as well as the impossibility of obtaining movement on the plane in any direction, since one of the clamps is fixedly mounted.

Also known is an engine comprising a stator of ferromagnetic material in the form of a flat plate and an anchor in the form of an electromechanical transducer including electromagnetic locks and electrically deformable elements.

In the known device, the electromechanical transducer is made in the form of a rod-shaped electrically deformable element, provided at the ends with clamps 121.

However, the known device provides the movement of only one coordinate on the plane, which reduces its functionality.

In addition, when the deviation of force from the axis of the device

3 922919 4

it tends to roll over, i.e. relatively unreliable.

The purpose of the invention is to increase the reliability and enhance the functionality of the device. five

This goal is achieved by the fact that in a stepper motor containing a stator of ferromagnetic material in the form of a flat plate and an anchor in the form of an electromechanical converter 10 that includes electromagnetic locks and electrically deformable elements, the electromechanical converter is made in the form of a rectangular frame of electrically deformed elements 5 ,

In the corners of which are fixed clamps.

The drawing shows the proposed device.

Stepper motor contains stator _m

I in the form of a flat plate of ferromagnetic material and installed

on it is an anchor in the form of an electromechanical transducer. The electromechanical transducer is constructively 2 $ but is a rectangular frame composed of electrically deformable elements 2-5, which, in the case of their execution from a magnetostrictive material, are equipped with ₃₀ excitation windings 6-9. Electrically deformable elements can also be made of a piezoelectric material. In the corners of the frame are reinforced electromagnetic clips 10-13. ^five

The engine works as follows.

To move along the X axis, voltage is first supplied from a power source (not shown) to the latches.

II and 12. Due to the magnetic interaction clamps fix the engine on the plate 1. Then the power is supplied to the windings 6 and 8 of the excitation. Due to the positive magnetostriction elements 3 and 5 are extended

and move the latches 10 and 13 on the step, equal to the magnitude of the deformation.

Thereafter, voltage is applied to the latches 10 and 13, which are fixing in the engine ⁵⁰ at the plate 1. Thereafter,

the voltage is removed on the latches 11 and 12, then - the power from the windings 6 and 8 of the excitation. In the absence of magnetization, elements 3 and 5 take the initial size and tighten clamps 11 and 12 along the X axis. Thus, one step is carried out. Further process repeats. Movement along the Y axis is similar, only in the process of “stepping”, pairs of clamps 10 and 11, 12 and 13 and elements 2 and take part. 4 with the corresponding excitation windings. The alternate activation of the displacement along the X and Y axes allows the anchor to move at an angle of 45 ° to the axes, and with an unequal number of steps along one and the other axis - at any given angle, which expands the functionality of the engine.

The implementation of the electromechanical transducer in the form of a rectangular frame with four supports, virtually eliminates tipping, which ensures increased reliability.

Claims (1)

Claim A stepper motor containing a stator of ferromagnetic material in the form of a flat plate and an anchor in the form of an electromechanical transducer including electromagnetic locks and electrically deformable elements, characterized in that, in order to increase reliability and expand functionality, the electromechanical transducer is made in the form of a rectangular frame of electrically deformable elements, in the corners of which clamps are fastened. -