SU1312691A1 - Method of dropping imbricated winding in magnetic circuit slots of electric machine - Google Patents

Abstract

The invention relates to the technology of manufacturing electric machines, in particular, to the laying of washing, and can be used in the electrical industry. The aim of the invention is to improve the quality by eliminating the insulation damage and simplifying the technology. On the reamer of the insulating sleeve 1, in the zone of its contact with the slot of the groove, recesses are made to form areas of reduced rigidity. The sleeve 1 is installed in the groove 5 so that its end sections 4 protrude beyond the groove of the groove. Then, for example, the punch 9 presses in the direction of the bottom of the groove on the end portions of the sleeve and inserts them inside the groove to form a closed loop, after which the coils are wound into the slots of the magnetic core, opening the contour of the sleeve due to the force of the coil conductors. 4 il. c (L 00 th O5 FigZ

Description

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The invention relates to the technology of manufacturing electric machines with loose windings and can be used in the electrical industry.

The aim of the invention is to improve the quality by eliminating the insulation damage and simplifying the technology.

Fig. 1 shows a sweep of an insulating sleeve with areas of reduced stiffness; figure 2 - the position of the sleeve in the groove of the magnetic circuit; in fig. 3 — pathoisoprocessing process; figure 4 - the process of winding in the isolated grooves of the magnetic circuit.

The method is carried out as follows.

On the scan of the insulating sleeve 1, in front of its installation, longitudinal grooves are made into the groove to form lines 2 and 3 of reduced rigidity along two parallel edges 4 (Fig. I). Lines 2 and 3 are made on the end sections of the sweep of the sleeve 1 so that after installing the sleeve 1 in the groove 5, lines 2 and 3 are in the zone adjacent to the slot 6 of the groove 5, y. coincided with the top “with the tju groove (figure 2). In this case, the distance between the lines 2 after the liner has been inserted into the groove should be no less than the distance between the lower edges 7 of the slot 6 (i.e. not less than the width of the slot 6), and the positions of the lines 3 are determined by the shape (configuration) of the groove and In the general case, lines 3 should coincide (after the liner 1 is installed in groove 5) with the faces of the junction (transition) of the side surfaces (walls) of the groove and the top surfaces of the groove. For slot configuration (FIG. 2), these are mating lines 8.

Then the sleeve 1 is installed in the groove 5, giving it a V-shaped shape (Fig. 3 a) with the edges 4 of the end sections protruding beyond the slot of the groove. You can install the sleeve 1 from the end of the magnetic circuit, and through the slot-radially. After installing the sleeve 1 in the groove 5, the edges 4 of the end portions are affected, for example, by a punch 9 in the direction of the bottom of the groove 5 (FIG. 3b).

As a result of impacting the edges 4 from the side of the punch 9, the end portions of the sleeve 1 are bent inside the groove 5 along lines 2 and 3, while the sleeve

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is pressed against the inner surface of the groove 5, assuming its shape, and the edges 4 are moved apart, skipping the punch 9 inside the groove 5 (FIG. 3c). Then the punch 9 is removed from the groove 5, the edges 4 due to the elastic forces converge, the closure of the insulating circuit (Fig. 3 d).

After the sleeves 1 are installed in the groove 5 with the insulating circuit closed along the perimeter of the cross section of the groove 5, the winding conductors 10 are laid in the grooves 5. The conductor 10, which is located prior to the laying, outside the groove 5 (Fig. A) is inserted through the slot 6, while the conductor 10 pushes apart the joined edges 4 (Fig. 4b) and enters the groove 5 (Fig. 4c), after which the edges 4 return to their original position, locking conductor 10 into the groove 5 (fngl ). The process continues until all the conductors to be laid in the groove 5 are located within the closed insulating contour of the sleeve 1 (Fig. 4 g).

When using the proposed method, the quality of electrical machines is improved by eliminating damage to the insulation and the technology of tying and laying windings is simplified.

Claims (1)

Invention Formula The method of laying the bulk winding into the grooves of the magnetic circuit of an electric machine, including the installation of insulating sleeves into the grooves of the magnetic circuit and placing winding coils in them, characterized in that, in order to improve quality by eliminating insulation damage and simplifying technology, prior to installation The insulating sleeves into the grooves of the magnetic circuit at the end sections of their scans in the zone in contact with the slot of the groove, make longitudinal grooves for the formation of areas of reduced rigidity and install each insulating sleeve into the groove so that the end sections protrude beyond the slot of the groove, and before placing coils winding in the grooves of the magnetic circuit The end portions of the sleeve press in the direction of the bottom of the groove and insert them inside the groove. h v .m Editor I. Shulla Compiled by I. Bela Tehred A. Kravchuk Proofreader S. Shekmar Order 1977/53 Circulation 661 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4