SU1534666A1 - Linear dc drive - Google Patents

Abstract

The invention relates to electrical engineering, to electrical machines, providing linear movement of the working body. The purpose of the invention is to expand the operational capabilities by increasing the stiffness at a cantilever load application. The engine contains a passive magnetic core 3, the working surface of which is formed by strip-forming protrusions 4, one or several normally braked brakes 9 and T-shaped poles 2 of stator 1 carrying the excitation and control windings. The cylindrical electromechanical brakes 9, which provides increased rigidity. 3 il.

Description

The invention relates to electrical engineering and electric machines and can be used to improve linear electric drives and in robotics.

The purpose of the invention is to expand the operational capabilities of the electric drive by increasing the rigidity of the cantilever application of the load.

Figure 1 shows the engine, a general view; figure 2 - section aa in figure 1; on fig.Z - view B in figure 2.

The field windings and the main controls, the electromechanical or electronic switch of the main control windings, the feedback sensors are not shown in FIGS. 1-3.

The linear electric motor (Fig. 1) consists of a rectangular base of the stator 1, two T-shaped poles 2, covered by the excitation windings and the main controls,

rolling passive cylindrical magnetic core 3, whose two working surfaces form passive pole projections 4 arranged in a checkerboard pattern with a step equal to pole division; two brake pads 5 normally braked electromechanical brakes located in opposite corners of the stator base frame 1.

Figure 2 shows a device of a normally braked electromechanical brake consisting of a brake pad 5, having a stroke in the radial direction and attached to the core 6 of the solenoid, when voltage is applied to the winding 7, the pad 5 releases the moving magnetic core 3. When the solenoid 7 of the spring is turned off 8 presses the brake pad 5 to the smooth cylindrical surface movably SL OS

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of the magnetic circuit 3 and fixes its position.

Fig. 3 shows the arrangement of the flange 9 of the stator bed 1 with sliding slide plates 10.

The working surfaces of the magnetic core 3 do not protrude beyond the contour of its cylindrical section, thereby ensuring the free movement of the cylindrical magnetic core 3 in the sliding bearings 10.

Linear electric motor operates as follows.

When voltage is applied to the windings I 7 of solenoids of normally braked electromechanical brakes and winding of excitation and crust control of T-shaped poles 2, the movable cylindrical magnetic core 3 moves at a predetermined speed until the feedback sensor turns off winding 7 of the solenoid and excitation and core controls The T-shaped poles 2, as a result, the electromechanical brake pads 5 are pressed against the springs 8 to the section of the cylindrical smooth surface of the magnetic circuit 3 and fix its position.

The proposed drive allows the use of motion in machine-tool and machine-building robotics.

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for the implementation of linear movements with minimal backlash of the working body with cantilever loads on it, which leads to the presence of a positive effect,

Claims (1)

 Invention Formula A linear DC electric drive containing a stator in the form of a ferromagnetic frame with T-shaped poles opposed to each other and carrying workers and excitation windings and a movable magnetic circuit with pole-forming protrusions, in order to enhance operational capabilities by increase in stiffness with a cantilever load application, it is equipped with at least one pair of normally braked electromechanical brakes attached to the frame against each other, and a movable magnetic core is in the form of a truncated parallel planes to the longitudinal axis of the cylinder with the projections polyusoobrazuyuschimi performed staggered on flat surfaces facing the stator poles, and its cylindrical surface covered by said brake. iudS