SU1292111A1 - Magnetic circuit for electric machine - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to simplify the technology of beveling in the manufacture of twisted magnetic cores. The magnetic conduit consists of a clawed soHbJ with teeth 2 and claws 3 and и. When cutting and winding between the two teeth 2, grooves 6 are formed. The slope of the grooves is obtained by changing the pitch of the stamping along the teeth t, by t in one of the steps. Changing the pitch through one coil can be made either in a smaller direction (, - for the left-bevel bevel), or in a larger direction of increasing the step (t, j t, - for the right-bevel bevel, when viewed from the winding side). This allows an increase in labor productivity. 1 hp f-ly, 3 ill. "(L 1C with N9

Description

112

The invention relates to electrical engineering, in particular to electrical machines, the toothing zone of which is made of twisted-on-edge tape with pre-cut grooves, with bevel slots necessary to improve the vibro-acoustic characteristics of the machine.

The purpose of the invention is to simplify the technology of beveling in the manufacture of twisted magnetic cores.

Figure 1 shows the magnetic core of the rotor, a longitudinal section; on 4 mg. 2 shows the construction of the dentate zone during the process of obtaining the groove of the grooves when winding the dentate zone onto the rib; on 4 mg. 3 shows the rotor design in the process of obtaining the chamfer for the case when the clamps are located on the side of the chassis.

The magnetic circuit consists of a tooth zone 1, which includes teeth 2 and tooth jumpers 3, frame 4. In FIG. 1 also shows the rotor shaft 5. The tooth zone is obtained either by cutting two tooth zones from one tape in a waste-free manner (Fig. 2) or in a low-waste manner when cutting tooth-teeth zone 1 from a single tape (Fig. 3).

When cutting and winding between the two teeth 2, grooves 6 are formed for laying the winding.

The slope of the grooves is obtained by changing the pitch of the stamping on the teeth t,

on tj on one of the steps. This is best done after one turn at a distance of step t, Z, measured along the neutral axis 7. Changing the step after one turn can be done either from the lower side (t for the left-bevel bevel) or to the larger side of the increment ( tj t, - for a right-bevel bevel, as viewed from the side of the wrap). Changing the pitch that separates one coil from another can be obtained either in the process of cutting the teeth by changing the feed in the die once through the Z teeth, or by deforming the teeth rim after the stamping of the teeth in the ribbon.

The most technologically advanced bevel is the right-turn (,), in which the increase of the schaga from t, to t is produced by mechanical deformation of the toothed bridge 3, in which local drones take place.

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jumper (pos.8, 2 and 3). If it is necessary to get a bevel at the expense of the toothed zones of the stator and the rotor, then the winding from the toothed zones should be different (right-handed or left-handed, when viewed from the same side of the tape being rolled). Wire winding of the tape is shown by a dotted line (figure 2). The proposed design solution gives the same technical quality (improvement of vibroacoustic characteristics) as in classical magnetic cores, but is rational for coiled continuous tooth zones, since it is a continuous and high-performance process.

The proposed solution can be used in the magnetic conductors of electric machines of direct and alternating current. Izgo

The magnetic circuit is manufactured in the following sequence: cutting the strip of iron into ribbons of measuring width; vtmptampovka teeth in the tape with a step t,; increasing the initial pitch of each turn from pitch t to pitch tj by increasing the feed in the die once per revolution of the dentate zone, stretching, crushing, rolling, etc., winding the dentate zones onto the pre-beveled slot guides; assembly and fastening of the package (if necessary, the area before being fastened into the package is connected to the magnetic conductor circuit

Then the magnetic core is assembled by a known technology.

Claims (2)

1. Magnetic circuit of an electrically driven machine containing a rome and a notched zone with groove beveling made by winding tapes onto an edge, characterized in that, in order to simplify manufacturing technology, the width of the first groove of each subsequent coil differs from the width of the other grooves of this coil by the amount of grooves, coming on one turn of the magnetic circuit. 2. Magnetic circuit according to claim 1, which is also so that, in order to obtain the slope of the grooves by deforming the bridges between the teeth, the cross section  toothing jumper in the first zone 312921114 the groove of each subsequent turn of the unlocking in the zone of the other grooves of this differs from the cross-section of the tooth re-coil. ; 3 / /  5 1 iiZ Editor N. Margolin Compiled by V. Petri Tehred L. Serdyukova Order 281/54 Circulation 661 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader T. Kol b