SU1594653A1 - Method of manufacturing rotor core of electric machine - Google Patents

Abstract

The invention relates to the technology of manufacturing electrical machines and can be used in the electrical industry. The aim of the invention is to improve the quality by improving the electromagnetic characteristics. Stamped plates 1 of the core of the rotor of the electric machine with grooves 2 for the working winding, hole 3, keyway 4 and technological sign 5. Assemble the package in a device with a beveled rod. Mow grooves at an angle corresponding to the angle of the bevel between the working and starting windings. The plates are fixed, and a through technological groove 8 is made. The plates are removed from the device, keeping their alternation order, and the grooves 9 under the starting winding are stamped, the plate is oriented in the die along the technological groove 8. After that, the plates are assembled on the shaft with ensuring their alternation in adaptation. 1 hp f-ly, 5 ill.

Description

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The invention relates to technologists manufacturing electrical machines and can be used in the electrical industry.

The aim of the invention is to improve the quality by improving the electromagnetic characteristics.

Figure 1 shows the rotor core plate, in which the grooves of the working winding, the inner hole, the keyway and the technological sign are stamped; Fig. 2 shows a device with a beveled rod for assembling a packet and a bevel of the starting and working cells; on fig.Z - plate of the rotor core, on which the technological groove is made; figure 4 - plate of the rotor core after stamping the slots of the starting cell; Fig. B shows a rotor core assembled with a shaft.

The method is carried out in the following manner.

First, plates 1 with grooves 2 for the working winding, inner hole 3, keyway 4 and technological sign 5 are stamped. Then nakeT is assembled in tool 6 with a beveled rod 7, the plates are shifted by the amount of the total slope of the rotor and stator slots the slots of the working and starting windings, in this case, the sum of the teeth divisions of the stator and the rotor). With straight slots of the stator, this x-ray bevel coincides with the bevel of the working cell, and with beveled slots the stator differs from the bevel of the working cell. Then the bag is tightened and, for example, a technological groove 8 is cut through the inner hole of the bag diametrically opposite to the key groove 4 (FIG. 3). Due to the bevel of the core package, the groove 8 is obtained in a straight-line motion, for example, a slotting tool cutter or a milling cutter. After that, the bag is disassembled and, not changing the relative position of the plates

Oriented in the stamp along the process groove 8, the grooves 9 for the starting cell are stamped (FIG. 4). Then, in the same order, a packet of the rotor's center 10 is assembled on the shaft 11 with a beveled key (FIG. B) and finally pressed. The key bevel in this case provides the bevel of the grooves 2 of the working winding on the toothed division of the rotor, while the bevel of the slots 8 of the starting winding is equal to the toothed division of the stator, and the mutual bevel is equal to the sum of the toothed divisions of the rotor and stator.

Claims (2)

Claim 1. A method of manufacturing a rotor core of an electric machine, by which plates with an internal hole are punched out of electrical steel, are located on the side of the hole with a key groove and winding slots, and the plates are assembled into a package on a shaft with a beveled key different from that, in order to improve the quality by improving the electromagnetic characteristics, when stamping the plates, they made net grooves under one of the windings, before assembling the plates onto the shaft, they are assembled in a device with a beveled rod and sk sew grooves on. the angle corresponding to the angle of the bevel between the working and starting windings, the plates are fixed and a through technological groove is made parallel to the package axis, then the plates are removed from the fixture, retaining their order of alternation, and the grooves for the other windings are punched in the die along the process groove, and the assembly of the plates onto the shaft is performed by ensuring their alternation in the fixture. 2. The method according to p. 1, about t and h and th and the fact that a through technological groove is performed on the inner surface of the plates from the side diametrically opposite to the key groove. hisj 2 Fig.z 2.5