SU1339777A1 - Method of producing magnetic core of electric machine - Google Patents

Abstract

The invention relates to the technology of manufacturing magnetic circuits of electrical machines and can be used in the electrical industry. The purpose of the invention is the expansion of technological capabilities by manufacturing a magnetic conductor with various widths of grooves and teeth. Pos. e vyshtampovki teeth 1 at b bn t2 / 2. where the width of the groove, 1, bg is the width of the tooth, b is the step size along the teeth, the width of the groove is increased to the value b by plastic deformation on the continuous edge of the tape 2. The radial surfaces subjected to plastic deformation are mechanically processed. This invention is especially effective for the manufacture of magnetic cores with a height of a continuous edge up to 4-6 mm. 4 il. co s co s FIG. one

Description

The invention relates to the technology of manufacturing magnetic circuits of electrical machines and can be used in the electrical industry.

The aim of the invention is the expansion of technological capabilities through the manufacture of magnetic conductors with different widths of grooves and teeth.

FIG. 1 and 2 show sections of the dentate zone of the magnetic circuit; in fig. 3 - plot denzovogo zone, made by the proposed method; in fig. 4 - (a, b, c, and d) are embodiments of the pz.meni. step but the teeth in the tooth zone after stamping the teeth in the tape.

When designing the electric machine magnetic circuits, the width of the teeth in the stator is usually less than the width of the groove, and vice versa for the rotor, which is dictated by the economic criterion in determining the optimal geometry of the duct.

The magnetic core is assembled in the following sequence.

The strips are cut into ribbons of measuring width, then the longitudinal separation of the mite along the contour of the teeth into two identical tooth zones is carried out. The tooth pitch is changed to the required size, the toothing zone is wound onto the rib to form a coil (pitch change can also be performed while the tape is bending to the rib), the tooth casing is rigidly connected to the magnetic conductor, and mechanical machining of surfaces ( if necessary,).

According to the proposed method, after discharging teeth 1 with the preservation of yc,; ioi

K, / 2,

where bz is the width of the tooth; L- - width Naza; tz is the value of step a along the teeth; the width of the base is increased to the value of b. by plastic deformation of the continuous edge of the tape 2, which at the stator is either rmo.m or its part for the composite magnetic circuit, and for polar

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five

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The torus continuous edge is a technological link between the adjacent teeth.

Plastic deformation is carried out (Fig. 4) by deformation of the entire portion of the continuous edge of the tape (Fig. 4 a) at a height h. The height of the continuous section may slightly increase to a value h, by partial stepwise deformation of the continuous section 3 of the tape (Fig. 4b), by partial deformation of the continuous section of the tape (Fig. 4c), by partial radial deformation of the continuous edge of the section tape designed for the rotor. Radial surfaces subjected to plastic deformation, if necessary, are machined, for example, for a rotor (Fig. 4 g) - along the contour of its barrel.

The invention is applicable not only to the waste-free method of manufacturing the tooth zone (Fig. 1 and 2), but also to the low-waste method (Fig. 3). For this purpose, a partial change in the step is performed, at which the width of the withdrawal of the stamping can be sunkly reduced.

This invention is especially effective in relation to the toothed zones with an insignificant (up to 4-6 mm) height of the continuous edge of the tape, which include the toothed zones of the rotor and the toothed zones of the stator with a different rib. The proposed manufacturing method of the magnetic circuit can be used for direct and alternating current.

Claims (1)

Invention Formula A method of manufacturing an electrical magnetic machine, comprising a longitudinal division of the tape into two paBin, i.e. parts with the formation of teeth and grooves of the same Piririn, and winding of parts of the lenga on an edge, differing in that. that, in order to expand technological possibilities by manufacturing a magnetic conductor with different widths of grooves and chucks, after pa: -; - dividing the tape into parts, plastic deformation is performed continuously () about the edge of the tape to obtain a given value of the tine division. -with, F // g but. Fig