SU1511806A1 - Electric machine rotor - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to simplify the design. The rotor contains a rome and a toothed area, wound on an edge made of a tape with felled teeth 1. The adjacent teeth are mated with each other from the side of the frame with their side surfaces and interconnected by a weld 4. The mating side surfaces of adjacent teeth can be inclined to the radius rotor. The length of the weld 4 may be less than the axial length of the teeth 1. The weld 4 may be made intermittent with the length of the seam section not exceeding the thickness of the tape. 3 hp ff, 4 ill.

Description

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iljL jpc theine relates to electrical engineering, in particular, to the rotors of electrical machines, the teeth and zone of which are made by low-waste technology.

The purpose of the invention is to simplify the design, increase reliability and energy performance by reducing the magnetic resistance between the teeth.

Fig. 1 shows a half tooth of the rotor's tsovoi zone (rotor magnetic core without a chassis) with rectangular teeth; FIG. 2 shows a portion of a tooth zone of a rotor with trapezoidal teeth; on fig.Z - plot winding dentate zone of the rotor; on figa - methods of cutting the tape into the tooth zones, ensuring the fit of the teeth after winding it on the edge.

The rotor of the electric machine contains a tooth zone (Fig. 1), consisting of teeth 1, fastened with tooth jumpers 2. After winding a teeth 1 on the edge of the tooth zone from the side of the frame (a position is shown below the yoke), they adjoin each other and are connected with Welding 4. After welding, 4 prong jumpers 2 in subsequent rotor machining operations are molded or removed along line II (figo and 2). The tooth 1 1 1 in the zone of their common contact (on the size b) partially fulfills the function of the rotor hub, therefore it is advisable that they fit well together. In addition, in order to reduce the magnetic resistance of the melody by the teeth and the rm, it is necessary to have a w-ieTb quality surface of the tooth zone. This is achieved by making the mating side surfaces 5 of the adjacent teeth inclined to the radius of the rotor (Fig. 4) from the side of the frame, which ensures a good fit of the adjacent teeth to each other and creates a place for welding.

When using resistance welding, the inclination of the surfaces of the teeth is not used, and the reliefs on the lateral surface are protrusions (not shown). In a number of cases, for example, for a rotor with a squirrel cage, it is impractical to weld all the teeth: you can complete one seam entirely, and p - lying the shortened one (1 -f-l, IP), less than the axial length of the teeth, (figure 1). You can, for example, weld only the extreme parts of all

teeth, and do not cook the middle of teeth, etc.

In order to improve the machine parameters (starting properties, cosV) in a number of machines, it is advisable to weld the teeth with a discontinuous weld, and the length of the intermittent weld should not exceed the thickness of the tape. This operation is best performed during the bending process (Fig. 3) of the dentate zone on the edge, while the coil with the coil in the axial direction does not have a hard connection, which resembles the classical magnetic rotor with a slight height of the frame (Fig. 3). . Only part of the coil of one element of teeth). Adjacent turns of the claw zone elements may have an insulating gap. To reduce the dimensions of the dentate zone (in particular, to reduce the height of the teeth), the teeth on the side of the frame have a greater width than the width of the same teeth in its other part (b, b). The configuration of the teeth for this case is performed during the longitudinal separation of the tape along the contour of the teeth into the tooth zones (Fig. 4).

A distinctive feature of the separation of the tape along the contour of the teeth (Figo 4 is that the size must ensure that the adjacent teeth contact each other after winding it onto the edge.

The manufacture of the dentate zone is carried out in the following sequence: cutting the strip into ribbons of measuring width; dividing the tape along the contour of the teeth into two tooth zones with making the teeth of different widths; winding the tooth zone over the rib overlap (if necessary, simultaneously with-winding on the rib, the operation of welding the teeth elements from the side of the frame together); axial compression of a package of a tooth zone; welding teeth from the side of the frame together; processing of the internal part of the dentate zone under the pressure on the rme.

Further manufacturing operations for the rotor are performed according to well-known technology.

The invention allows to simplify the design of the dentate zone.

Claims (2)

Invention Formula I. The rotor of the electric machine, containing the RME and dentate zone, navi515 on the edge of the tape with pre-cut grooves and teeth connected by welding, which, in order to simplify the design, the adjacent teeth are adjacent to each other from the side of the frame with their side surfaces and interconnected along the surface mates 2. A rotor according to claim 1, characterized in that, in order to increase reliability and power characteristics by reducing the magnetic resistance between the teeth. 11806 the mating side surfaces of adjacent teeth are inclined to the rotor radius. 3, the rotor according to ppo1 and 2, about the t of which is due to the fact that the length of the weld connecting the adjacent teeth is less than the axial length of the teeth. 0 Rotor popp. 1i2, otli-. due to the fact that, in order to increase the energy characteristics, the weld is perforated, and the length of the weld section does not exceed tape thickness. FIG. J Jz.hj. fe / 5 "H" H / / Compiled by V. Petri Editor A. Lezhnina Tehred L. Serdokova Proofreader S. Cherni Order 5908/54 Circulation 648 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Subscription