SU1343508A1 - Arrangement for indexing the laminations of electric machine magnetic core - Google Patents

Abstract

The invention relates to electrical engineering and can be used in the manufacture of magnetic circuits in the manufacture of electrical machines. The purpose of the invention is to increase productivity. The device for orientation of sheets contains a central mandrel and preliminary orientation elements in the form of two elastic knives cantilever-mounted on a central mandrel with parallel axes having a thickness less than the minimum groove width. 3 il. : about 4 W D1

Description

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The invention relates to electrical engineering and can be used in process equipment for the production of electrical machines in the manufacture of their magnetic cores from sheets with an internal arrangement of m slot, in particular, in the manufacture of electrical machines of low power.

The purpose of the invention is to improve the performance of orientation of the sheets of the magnetic circuit of an electric machine from sheets with an internal slot arrangement.

1 shows a device for assembling the magnetic circuits of electrical machines, axonometrics; Fig. 2 shows one of the possible directions of relative mixing, the cantilever part of an elastic pair of knives and a separate sheet of magnetic circuit with an internal arrangement of grooves at the preliminary orientation stage; figure 3 - package of the magnetic circuit in the final Assembly. on the central mandrel, section.

The device includes a cantilever section 1 of an elastic knife, uchatok 2 knives on the mandrel, the central mandrel

3, the individual sheets 4 of the assembled magnetic distance from one another, to the connector, grooves 5 of the magnetic circuit. The opening angle d between the blades of the knives should be less than 90 ° (Fig. 2), and the angle between two adjacent grooves within it should be a multiple of this angle or equal to.

The device works as follows.

Before assembly, the individual sheets 4 of the assembled magnetic core are stacked in stacks, for example, after dividing, and then fed randomly oriented one relative to the other in the cantilever section 1 of elastic knives. Due to the fact that the lateral dimensions of the cantilever knives are several times smaller than the diameter of the fed sheets, it takes only a few seconds to dress the entire stack of sheets 4.

Next, a preliminary orientation of the entire stack of sheets 4, worn on the cantilever part of elastic knives, is carried out, for which the entire device or only the cantilever part of the elastic knives is rotated around one or several XYZ axes

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When bringing the whole device OR only a pair of cantilever knives fixed in the specified movement, due to the cantilever fixing of the knives and their filling of elastic material, they are forced to oscillate with different amplitudes, phases and frequencies, as well as the free arrangement of the 4. magnetic-conductor sheets on the cantilever section 1, the knives reduce the friction of both the individual sheets 4 one about the other and the surface of the knives. An additional factor that can further reduce friction is the execution of the contact edge of the knives with a minimum allowable radius, which does not cause the formation of burrs on the sheets 4 of the magnetic core.

Thus, due to the excitation of a number of oscillations caused by the oscillations, the sheets of the magnetic circuit move in different directions. In this case, the only stable position that prevents further movements or makes them difficult is putting on an arbitrary pair of grooves 5 located on different sheets 4 on an equal footing.

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Salon area 1 knives. In order to ensure that the entire stack of sheets 4 is worn on the cantilever section 1 of the knives, in the case of orientation of the sheets of a low-power electric machine, only 3-6 oscillations around any of the axes are sufficient.

After pre-orienting the sheets 4 of the magnetic circuit over the pair of grooves 5, the entire package of the magnetic circuit is moved along the blades as along the guides to the central part of the mandrel 3, where their final orientation along the inner diameter takes place.

If it is necessary to further remove the rastivtovka package of the magnetic circuit, the section 2 of the knife on the mandrel is performed with a thickness greater than in the constable area 1 of the knife.

Claims (1)

Invention Formula A device for orienting sheets of an electric machine of an electrical machine from sheets with an internal slot arrangement, comprising a central mandrel and pre-orientation elements, characterized in that, in order to increase productivity, the preliminary orientation elements are made in the form of two elastic knives cantilever-mounted on the central mandrel along its axis with thickness. 35084 smaller width of the groove, while the elastic knives are set so that their profiles form an angle l 90, a multiple of the angle between adjacent grooves of the magnetic circuit. g fe / Editor A. Kozorie Compiled by V.Pyshkina Tehred M.Hodanich Order 4834 / 54Discount 659Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader A.Ilyin