JPS6032531A - Ac electric machine and manufacture thereof - Google Patents

Abstract

PURPOSE:To reduce the number of processing steps by casting or die casting laminated electromagnetic steel plates with a material which forms a sheathing case, thereby integrating them. CONSTITUTION:Electromagnetic steel plates 11 having slots 14 for containing a winding 20 are manufactured by punching with a press. The plates 11 are laminated to form a core of a stator. The laminated plates 11 are secured to the interior of a mold as in the shape of a sheathing case 12, a material for forming the case 12 such as aluminum or iron is melted, and flowed into a casting mold, and integrated with the plates 11 and the case 12. Then, the case 12 is cut at the end. A winding 20 is disposed on the plates 11. Thus, the number of the steps of securing the laminated plates to case the can be reduced.

Description

TECHNICAL FIELD The present invention relates to an alternating current machine in which an iron core and a case in a stator are integrally formed by casting or the like, and a method for manufacturing the same.

PRIOR ART Conventionally, the stator of a L-shaped alternating current machine, such as a synchronous machine or an induction machine, is made by punching out slots for windings, laminated with electromagnetic steel plates, and has an outer sheath to protect the periphery of the electromagnetic steel plates. The case is manufactured by casting or cutting, and its inner surface is precisely machined to match the external shape (usually circular) of the electric V11 steel plate.
It is manufactured by inserting a single laminated electromagnetic steel plate that has no play, and fixing it with adhesive or the like into the shrink fit.

The end of the outer case is then machined to attach a bracket, which is provided with a bearing to support the rotor. The rotor is magnetized by permanent magnets C and H and has a plurality of magnetic poles. Slot of electromagnetic steel plate (Nimaki Sword/Tare Maki 11
i! Due to the rotating magnetic field C2, the magnetic poles of the rotor receive rotational force and rotate.

However, in the above-mentioned AC machine, when the laminated electromagnetic steel plates are attached to the outer case, the inner surface of the outer case is well finished with Raft K, so that the electromagnetic steel plates are fitted without any play and are connected to the center of the outer case. It is necessary to align the center of the steel plate.

This has the problem of increasing the time required for processing (k<TC), which in turn leads to an increase in manufacturing costs.

For this reason, one improvement idea is the outer case? It is conceivable that the electromagnetic copper plate takes on the function of the outer case without using it, but it is not always possible to do so because of the lack of structural strength υJ ball, which makes it unsuitable for the sealed structure required for explosion-proof use. What is completely satisfying is the current situation, which has not been met.

OBJECT OF THE INVENTION The object of the present invention is to solve the above-mentioned problems with the conventional alternating current machine by casting or die-casting a laminated magnetic steel plate over the material constituting the outer case. Based on the idea of forming C2, we reduced the number of steps required to fix the laminated electromagnetic steel sheets to the outer case, shortened the time required for the processing process (2), and reduced the manufacturing cost by (2). The goal is to reduce

Structure of the Invention In one form of the present invention, there is provided a rotor having a plurality of magnetic poles 7 formed by permanent magnets, and laminated fixed electromagnetic steel sheets having slots for windings, and an outer winding of the laminated electromagnetic steel sheets. In an alternator equipped with a stator having a case and a winding wound around the laminated electromagnetic steel plates, the laminated electromagnetic steel plates and the nuclear envelope case are cast, and the tile is cast by the die cast method. Is it possible to achieve a total of 1η? An alternating current machine with features is provided.

In another embodiment of the present invention, the step of laminating electromagnetic steel plates having slots for winding, processing the structural material to form an outer case, and fixing the laminated electromagnetic copper plates to the outer case. and fixing the electromagnetic steel plate to the outer cover.
(In the manufacturing method C2 of an alternating current machine comprising the step of mounting the I bracket part and the rear bracket m and holding the rotor via a bearing, the structural material is processed and the 01 layer is
．． As a step of fixing the electromagnetic steel sheets to the laminated ones, the electromagnetic steel sheets are cast or cast using the die cast method.
Provided is a method for manufacturing an alternating current machine, characterized in that it includes a step of forming a dry layer electric steel plate integrally molded with a building material and fixed to an outer cover.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A cross-sectional view and a vertical cross-sectional view of a strainer as an embodiment of the present invention are shown in FIGS. 1 and 2, respectively.

The electromagnetic steel plate 11 having slots 14 for accommodating the windings 20 is manufactured by "resistance C".

In Fig. 1, the slots 14 are omitted and only two slots are shown, but they are arranged evenly over the entire circumference (double-C). A section 15 is provided.

The electric steel plates 11 having the above-mentioned shape are laminated 71. The iron core sound of the identifier is formed. #I? The A and constant electromagnetic steel plate 11 is fixed in the shape of the outer case 12, and the material that constitutes the outer case 12, f11 is aluminum, etc. Chichi) Melt the top Uki ej
j壓ζ：Rinse 1. ! The electric gI steel plate 11 and the outer T1 support case 12 are integrally formed into a λ layer. This can also be done by die-casting method C2.
A winding 20 is disposed on the electric steel plate 11.

On the other hand, the rotor 13, which has a plurality of magnetic poles with permanent magnets and field poles 1:1, is arranged around the shaft 18.
are supported by bearings 19, which are attached to the machined ends of the outer case 12 by the front bracket 16L and the rear plaque 17C.

Current is supplied to the winding 20 and the TL magnetic plate is laminated]1
When a two-rotation magnetic field is generated, the rotor 13 having p-poles (eight in this example) rotates as the shaft 182.

In my father's method of manufacturing C2 using each process 8 as described above, the circular surface of the outer case 12 is processed and the fitting dimension 1 is fixed by adhesion or the like and the outer cover is This can be carried out in one step of laminating the case 712 and casting it integrally with the electromagnetic steel sheet 11.

Effects of the Invention The second twist of the present invention is capable of reducing the number of echo-addition steps necessary for fixing the laminated electromagnetic steel sheets to the outer case C2, and shortening the time required for the processing process. As a result, it is possible to reduce the manufacturing cost of the sieving machine.

[Brief explanation of drawings]

FIG. 1 shows an example using manufacturing method 2 of the present invention!
2: Cross-sectional view of Nagareiso, construction figure 2 is a longitudinal cross-sectional view of the alternating current machine shown in figure 1. 11...Electromagnetic steel plate, 12...Outer case, 13...Rotor, 14...Srono 1.
15...Protrusion, 16...Front bracket, J
7...Tk Plaquet Soto, 1F (...
Glaze, 19...Shaft, Rainbow 0...I<<=
J<+2゜Patent Applicant: FANUC CORPORATION ritt""DepartmentM's Enclosed Patent Attorney ± i'f Ki Ro Patent Attorney Kazuyuki Nishi Patent Attorney Yamaguchi 1111 "Buried Earth Nishiyama -! If ya

Claims (1)

[Claims] 1. A rotor including a plurality of magnetic poles formed by permanent magnets, a laminated electromagnetic steel plate having slots for windings, an outer case surrounding the laminated electromagnetic steel plate, and In an alternator equipped with a stator having a winding wound on the laminated electromagnetic steel plates, the electromagnetic steel plates and the core envelope case are integrally constructed in the laminated electromagnetic steel plates by casting or die casting. An alternating current machine featuring: 2. The steel plate has at least one rotation stopper on the outer periphery.
An alternating current machine according to claim 1, wherein the alternating current machine is provided with a plurality of protrusions. 3. Step of laminating electromagnetic copper plates having slots for windings, processing the structural material to form an outer case, and fixing the laminated Tc electromagnetic steel plates to the core outer case (=fixing step, fixing the electromagnetic copper plates) In the method for manufacturing an alternating current machine, which includes the steps of attaching the front bracket part, the L rear bracket part, and the rear bracket part to the outer case and holding the rotor through bearings, the structural material is processed and the laminated material is !In the step of fixing the magnetic steel plates, the laminated magnetic steel plates are integrally molded with the tank structural material by casting or die casting, and then fixed to the outer case.
A method for manufacturing an alternating current machine, characterized by providing a step in which an IR-layer electrical steel sheet is formed. 4. The method for manufacturing an alternating current machine according to claim 3, wherein at least one protrusion is provided as a two-way stopper on the electromagnetic steel plate C having the slot for the winding.