SU1077021A1 - Process for manufacturing corrugated tooth area of magnetic circuit of electric machine - Google Patents

Abstract

1. METHOD OF MANUFACTURING A CORRUGATED TEETH MAGNETIC ZONE -. ELECTRIC MACHINE PASSES, including the manufacture of the workpiece, the development and cutting of the workpiece into sections whose width is equal to the length of the magnetic conductor, with the formation of bridges and alternating the beginning of the cut from the opposite edges of the workpiece, the corrugation of the workpiece, the formation of a mortise box 5 f ki and bending along the zigzag shape of the corrugated sections billets to align the sides of the corrugations of adjacent areas, rolling the corrugations of the billet into a ring and fastening, so that, in order to save electrical steel, In the form of a web, the wire is formed by grinding the wire to form a corrugation with a length corresponding to the perimeter of the slot box, and before cutting the blank into sections on the canvas, strip of ferromagnetic material is attached on both sides, the distance between which is equal to the groove, and the slot box is formed by bending the slot box along the length of the corrugations in mutually perpendicular (L planes. 2. Method according to Claim 1, about tl and chuyu u and, so that the wire is crimped across the width of the web. 3. The method according to claim 1, of which is 1D and with the fact that the strip of ferromagnetic material covers the areas of the workpiece.

Description

The invention relates to the manufacture of magnetic circuits of electrical machines and can be used in electrical industrial washing. A known method of manufacturing an electric machine's magnetic circuit, according to which the yoke is wound on the edge in a spiral, and the dentate zone is corrugated from a tape whose width is equal to the length of the magnetic conductor, then the corrugated tape is rolled into a cylinder and fastened, a winding is placed in the slots of the dentate zone zone in rmo .fj. However, due to the thinness of steel along the thickness along the belt, a preliminary adjustment of the bending knife depending on the thickness of the tape is required, which complicates the manufacturing technology. Most of the proposed method of manufacturing a corrugated tooth zone of an electric machine's magnetic circuit, comprising cutting the workpiece, cutting the workpiece into sections whose width is not for the magnetic core with the formation of jumpers and alternating the beginning of the cut from the opposite edges of the workpiece, the workpiece is grooved, a slot box is formed and bend zigzag-shaped sections of the corrugated blank before aligning the sides of the corrugations of adjacent sections, folding the corrugations of the blank into a ring and binding The main goal of this method is that the elements of the slot box, which are little loaded in a magnetic relation, are made of expensive electrical steel. The purpose of the invention is to save electrical steel. The goal is achieved by the fact that the preform is made in the form of a web by corrugating the wire to form a corrugation with a length corresponding to the perimeter of the pazo box, and the front is cut by a strip of ferromagnetic material from the two sides to the web on two sides, the distance between which is the groove width, and the slot box is formed by bending the web along the length of the corrugations in the mutually perpendicular planes. In addition, the wire is crimped across the width of the web. . Strips of ferromagnetic material cover areas of the workpiece. FIG. 1 shows a sheet of corrugated wire and the formation of a slot box therefrom; in fig. 2 is a section A-A in FIG. 1 for the closed slot box of FIG. the same for an open slot box; in fig. 4. - bending of sections of the corrugated billet; in fig. 5 view B in FIG. four; in fig. 6 - slot box with one-sided, arrangement of ferromagnetic strips; on Fig.7 the magnetic stator; in fig. 8 rotor magnetic core; in fig. 9 a workpiece consisting of several webs; in fig. 10 is type B in FIG. 9; in fig. 11 is a section of YY in FIG. 10. The corrugated tooth zone of the magnetic circuit of the electric machine is made in the following sequence. A blank is made in the form of a web 1 by corrugating the wire across the width of the web 1 to form a corrugation 2 with a length a corresponding to the perimeter of the groove box 3. The web 1 is attached on both sides. For example, by resistance welding, strips of ferromagnetic material to an electrical steel tape, the distance between co-mountains b is equal to the width of the groove. The strips 4 can be located on both sides of the web 1 (Fig. 2 and 3) and on one side (Fig. B), and the strips 4 in several layers (Fig. B) can be laid along the thickness of the web 1. Then the workpiece is cut into areas whose width is equal to the length of the magnetic circuit C (Fig. 1) with the formation of jumpers 5 (the area of jumpers shown by a dash-dotted line) and alternating the start of cutting from opposite edges of the workpiece 1. Forming the groove box 3 with the device b by bending the blade 1 along the length corrugation 2 in mutually perpendicular planes (Figs. 2 and 3) and using a device 7 in a zigzag form, bend portions of the corrugated workpiece until the corrugations 2 of adjacent portions are aligned ((Fig. 4 |, then the corrugated The billet is in a ring and fastened. A cloth 1 can be obtained from the billet shown in Fig. 9. The width of such a billet is a multiple of the width of the web. The billet (Fig. 9) is wound from a drum 8 and cut with a device 9 along line 10 into strips 11. The strips 4 of ferromagnetic material can cover the blank sections (Figs. 10 and 11). The invention saves electrical steel, since the slot box sections, which are less magnetically loaded, are made of less expensive wire.

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Claims (3)

1. METHOD FOR MANUFACTURING THE CORrugED MAGNETIC ZONE ZONE. ELECTRIC MACHINE WIRES, including the manufacture of a workpiece, cutting the workpiece into sections whose width is equal to the length of the magnetic circuit, on the formation of jumpers and alternating the beginning of the cut from opposite edges of the workpiece, corrugating the workpiece to adjacent workpieces and tending to zigzag the corrugated alignment sections forging, folding the corrugation ring and fastening, due to the fact that, in order to save electrical steel, the workpiece is made in the form of a web by corrugating Oloka to form a corrugation length corresponding to the perimeter of the slot box and before cutting of the workpiece on the web portions on both sides is attached strips of ferromagnetic material separated by a distance equal to the groove width and formed into a box by bending blade grooves along the length of the corrugations in mutually perpendicular planes. 2. The method according to claim 1, about t-l and chayuu u. With the fact that the wire is corrugated along the width of the web. 3. The method of pop. 1, with the fact that the bands of ferromagnetic material are covered by Ι ^ ϋΖΖΟΓ ^{η ,,} · π§ · ^BD