SU1133638A1 - Process for manufacturing magnetic core of electric machine - Google Patents

Description

2. The method according to claim 1, wherein the tape is made of a band of ferromagnetic material with two belts with dentate zones, with the heads of the teeth made up of belts of tape on opposite edges of the strip with the teeth being displaced opposite edges of the strip are half the width of the tooth, and the elements of the transition each from. the toothing zone enters the recesses in the crown of the teeth of the other tape. 3. The method according to claim 1, in which it is said that the yoke is rolled out of a tape of a ferromagnetic material with protrusions and depressions preliminarily filled along the edge of the tape with cavities with a step equal to the jagged pitch; division. 4, the method according to PP, 1-3, about the t and n and n and the fact that from the strip of ferromagnetic material are made two tapes for the frame, having depressions and protrusions in the middle of the strip, while the depressions of each of the tapes form protrusions in another tape. - 5. A method according to claim 3, characterized in that the dents zone is wound from two tapes, the teeth of which are made with antennae directed in each of the tapes in opposite directions from the axis of the tooth.

The invention relates to the technology of manufacturing magnetic circuits of electrical machines and can be used in the electrical industry. A known method of manufacturing an electric machine magnetic circuit, in which the electrical steel strip is divided into two symmetrical with grooves and teeth, each tooth having central notches forming two protrusions on the edge of the tooth, and on the opposite side of the ribbon opposite the tooth wedge-shaped cuts, which contribute to the winding of the tape on the edge. After winding the tape into a spiral, the wedge-shaped notches are crushed, and radial joints of the tape are formed from them, directed from the inner diameter to the teeth, then the projections on the teeth are bent in different directions, forming a cover. However, the method is not applicable in small electric machines with a small tooth width,. Also known is a method of manufacturing a magnetic circuit of an electric machine, including the manufacture of a chassis, a tooth zone by winding a ferromagnetic material into the spiral with pre-formed teeth and transition elements between the teeth forming the bottom of the groove, and installing the tooth zone c. However, in the manufacture of the dentate zone in a known manner, part of the dentate zone corresponding to the grooves goes to waste. The purpose of the invention is to save a ferromagnetic material. The goal is achieved: by the fact that according to the method of manufacturing the magnetic circuit of an electric machine, including the manufacture of a chuck, a dentate zone by winding a ferromagnetic material with spirals formed into it and the transition elements between the teeth forming the groove bottom into a spiral, , the grooves in the dentate zone are formed by making ferromagnetic material in the tape of notches in the shape of teeth so that the elements of the transition between the teeth are arranged along the height of the notches corresponding to The teeth on the sides, and in the crown of the teeth between adjacent transition elements form recesses, and the subsequent separation of the tape along the transition elements, bending them in the form of a loop and providing a distance equal to the teeth division in the magnetic conductor, in the frame from the tooth zone, cavities are made and the protrusions and the installation of the dentate zone in the rmo, the recesses in the crown of the tooth are aligned with the protrusions in the rotor, and the elements of the transition between the prongs with depressions in the ram.

31133

Two tapes with serrated zones are made from a strip of ferromagnetic material, with the heads of the teeth of each of the tapes on opposite strip chips with the teeth displaced along the opposite edges of the strip by half the width of the tooth, and the transition elements of each of the teeth zone enter the recesses in the crowns of the teeth of another tape.

The yoke is wound from a tape of ferromagnetic material with protrusions pre-filled along the edge of the tape and valleys with a pitch equal to the tooth division.

From the strip of ferromagnetic material, two ribbons for the frame are made, having hollows and protrusions in the middle of the Half-axes, while the hollows of each of the belts form protrusions in another belt. The dentate zone is wound from two bands, the teeth of which are filled with tendrils directed in each of the flax in opposite directions from the axis of the teeth. Figure 1 shows the implementation of the gaps: the tape of a ferromagnetic material with the subsequent separation of the tape on the jumpers; Fig. 2 shows a tape wrapped into a spiral; Fig. 3 shows an element of the tooth-like zone of the magnetic conductor, Fig. 4 shows the manufacture of two tapes from a strip for frame J, figure 5 shows a wrapping of the frame of the magnetic conductor; from two tapes; figure 7 - the magnetic stator of the electric machine; Fig. 8 shows the rotor magnetic circuit. The manufacture of the magnetic circuit of the electric machine takes place in the following technological sequence. Make dentate zone. 1 by winding a ferromagnetic material (FIG. 2) into a spiral of tape 2 with teeth 3 previously formed therein and elements 4 of a transition between teeth 3 forming the bottom of a groove 5. The grooves 5 in the tooth zone 1 are formed by making ferromagnetic material in the tape 6 7 according to the shape of the teeth 3 so that the elements 4. Of the transition between the teeth 3 are located along the height of the notches 8 corresponding to the sides of the teeth 3. In the crown of the tooth 3 between the adjacent elements 4 of the transition form depressions 9. After

Performing the gaps 7 produces the separation of the tape 6 along the 4 transition elements, bending them in the loop form and providing a distance equal to the tooth division in the magnetic core (Fig. 1).

Next, make; romo 11, in the ptor from the side of the dentate zone (Fig. 5), the grooves 12 and protrusions 13 are effected, and when the denta zone t is installed in the romo 11, the recesses in the crown of the tooth 3 are aligned with the projections 13 in the rotor, and the transition elements 4 between the teeth 3 with trenches 12 in rme 11 (Fig.7 and 8).

From the strip 14 of the ferromagnetic material, two tapes 2 with tooth-like zones T are made, with the heads of the teeth of each of the tapes on opposite edges being arranged. 15. and 16 of the strip 14 with the teeth 3 moving along the opposite edges of the strip by half the width of the tooth, and the elements 4 of the transition of the rear section of the tooth zone enter the recesses 9 in the crowns of the teeth of the other ribbon. An embodiment of the tooth zone 1 is possible, in which, from the technological point of view, a small hole 17 (FIG. 3) is provided in the transition elements 4. Wire 18 is inserted into the hole 17 to improve the formation of the toothed zone and increase rigidity during assembly. The yoke t1 can be made by pressing from monolithic steel, or wound from a tape 19 of ferromagnetic material with protrusions 13 along the edge of the tape, and depressions 12 with a step equal to the step division of the teeth. The yoke t1 can also be filled from the strip 20 of a ferromagnetic material (FIG. 4), from which two tapes 19 are made, with the valleys 12 and the protrusions 13 being placed in the middle of the strip, the protrusions 13 in the other tape are formed in the depressions 12 of each of the strip 19. Depending on the design of the magnetic circuit, respectively, the teeth are also grooved. For the stator, the opening of the groove faces the inner bore of the bag, and for the rotor in the opposite direction. A possible embodiment of the dentate zone with half-closed grooves. In this case, take two tapes 20 and 21 (Fig.6), in which the antennae 22 are directed in opposite directions from the axis of the tooth. These ribbons are folded together and folded into a spiral. B. assembled condition usik.ch 22 located e

in a staggered order, with a groove opposite one another, and the gap between them is the opening of the nasa, intended to enter the entire winding.

The formed cylinders of the parts of the magnetic circuit of the electric machine are connected by inserting the protrusions of the rotor into the depressions of the dentate zone. Landing can be carried out both in a cold state and in a hot state. When assembling the stator magnetic core, the PMR is heated to ZOO-ZZ C, and for

t;:,; rotor gnitoprovod - dentate zone. After assembling the stator magnetic core of the surface rotor vLni-i, forming: 2 to the air gap processing ;; ./f; ; L; .xai :: - 4.ct; KHM method. In this case, y / T-ujiiOT from the edges of the teeth of the cixiic technology protrusions 23 formed at the antennae 22, After machining the bores of the stator magnetic circuit and the rotor, the grooves are filled with a winding, and further assembly of the electrical magic is carried out using lime technology.

15 The invention saves ferromagnetic material by rationally cutting it.

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Claims (5)

1. METHOD FOR MANUFACTURING AN ELECTRIC MACHINE NITRO WIRE, including the production of a yoke, a tooth zone by winding a spiral of ferromagnetic material tape with teeth formed in advance and transition elements between the teeth forming the bottom of the groove, and setting the tooth zone in the yoke, from and, b) that, in order to save ferromagnetic material, grooves in the tooth zone are formed by making notches in the shape of teeth in the band of the ferromagnetic material so that the transition elements between the teeth are arranged in height grooves corresponding to the sides of the teeth, and in the crown of the tooth between the adjacent transition elements form depressions, and the subsequent spacing of the tape along the transition elements, bending them in the form of a loop and providing a distance equal to the tooth division in the magnetic circuit, the yoke from the tooth eon performs hollows and protrusions and when the tooth eon is installed in the yoke, the deepening in the crown of the tooth is combined with the protrusions in the yoke, and the transition elements q of the transition between the teeth and the troughs in yar- 7 me. n fi * -1 2. The method according to claim 1 ,. distinguish- '; due to the fact that two strips with tooth zones are made from a strip of ferromagnetic material, while the tooth heads of each of the tapes are located on opposite edges of the strip with the teeth offset along the opposite, positive edges of the strip by half the tooth width, and the transition elements of each of. the tooth zones enter the recesses in the crowns of the teeth of another tape. 3. The method according to claim 1, wherein the yoke is wound from a tape of ferromagnetic material with protrusions and depressions preformed along the edge of the tape with a step equal to the pitch of the gear division. 4. The method according to claims 1-3, with the fact that two ribbons for the yoke are made from a strip of ferromagnetic material, having depressions and protrusions in the middle of the strip, while the depressions of each of the tapes form protrusions in another tape. 5. The method according to p. 3, characterized in that the tooth zone is wound from two tapes, the teeth of which are made with antennae directed in each of the tapes in opposite directions from the axis of the tooth.