SU1233235A1 - Method of manufacturing commutator of electric machine - Google Patents

Abstract

The invention relates to the manufacturing technology of an electrical machine manifold. The purpose of the invention is to increase productivity. For this, the collector plate 3 is assembled on an external technological mandrel 1 having internal radial projections 2, whose thickness paBjia is the width of the slot between the collector plates 3, and the height is equal to the height of the working part of the plate. The collector plates 3 are inserted into the depressions formed by the protrusions 2 from the end of the mandrel 1. Since the walls of the depressions taper towards the center, the collector plates 3 after placing them in the mandrel 1 are reliably fixed. For greater reliability of fixation, rings of insulating material are inserted into the grooves of the tailpiece. Next, the assembled mandrel is installed in the mold and pressed with plastic 5, after which the technological mandrel 1 is pressed together and a ready collector is obtained. The protrusions 2 of the mandrel 1 leave splines on the finished manifold, so it does not need to be broken. 3 il. with S C / G FIG. 2

Description

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FIELD OF THE INVENTION The invention relates to the technology of electric machines, in particular to the technology of manufacturing collectors.

The purpose of the invention is to follow the labor productivity.

FIG. 1 3 shows the collector of electrical machines, manufactured according to the proposed method.

The collector plates are assembled onto an external technological mandrel 1 having internal radial protrusions 2, the thickness of which is equal to the width of the slot between the collector plates, and the height to the height of the working part of the plate,

The collector plates 3 are inserted into the valleys formed by these protrusions from the end of the mandrel 1 and, since the walls of the cavities taper to the center, the collector plates after placing them in the mandrel are reliably fixed. For greater reliability, rings 4 (Fig. 3) of insulating material, for example, fiberglass, are inserted into the grooves of the tailpiece.

Next, the assembled mandrel is installed in the mold and pressed with plastic 5 (Fig. 2), after 4

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five

12332352

i o press the technological mandrel 1 and get ready, the collector. The protrusions 2 of the mandrel 1 leave splines on the finished manifold, so it does not need to be broken.

Compared to the known method, the proposed method allows increasing labor productivity, since there is no need to pressurize plastic twice, remove the ring and dispose of the collector. Only one mold is needed instead of two.

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Claims (1)

Invention Formula A method of manufacturing a collector of an electric machine, including the implementation of a technological mandrel with grooves, the thickness of the jumper between them is equal to the thickness of the insulation between the collector plates, the installation of the collector plates in the grooves, the crimping of the collector and the removal of the mandrel, characterized in that, in order to improve labor productivity, the grooves in the technological mandrel are made from the inside, and the height of the jumper between them is chosen equal to the height of the working part collector plate. Fi & W Editor O. Bugir Compiled by V. Volkov Tehred M.Hodanich Order 2779/55 Circulation 597 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proof-reader I. Erdeyi