SU1020928A1 - Method of placing winding in electrical machine stator slois - Google Patents

Abstract

METHOD OF INSTALLATION OF WINDINGS INTO THE SLOTS OF THE ELECTRIC MACHINE STATOR, including winding of the coil groups onto multi-slot patterns, installing the templates into the stator bore and pushing the coil groups into the corresponding grooves of the rotor, and with the aim of improving the electrical characteristics. by increasing the filling ratio of the stator groove, after pushing the first coil group from the template, the wedge mandrel teeth are inserted into the stator grooves, the layer of which is not less than one for each coil of the coil group, and the mandrel is extracted from the stator slots before the coil group. IND about go SH)

Description

The invention relates to the technology of production of electric machines of alternating current and can be used in the electrical and automotive industries.

Methods are known for stacking single and double-layer stator windings, according to which the coils are wound into one pattern grooves in one row, then the template with the coil is pushed into the stator bore and the coils are placed into the corresponding slots Cl.

The disadvantages of these methods are low productivity and low slot fill ratio.

Another method of winding the electric windings into the stator of the electric mavina is also known, according to which the winding is performed using a multi-strip template, in which grooves a coil group is wound. After the template is installed in the bore of the stator package, the entire coil group simultaneously pushes S the corresponding stator slots t2j.

However, in this method, the turns of the coil groups after pushing are held spontaneously in the stator slots, which does not allow an increase in the slot filling factor with the conductive material, thereby deteriorating the electrical characteristics of the manna.

The purpose of the invention is to improve the electrical characteristics by increasing the filling ratio of the stator slot.

The goal is achieved by the fact that something in the method of laying the winding in the slots of the stator of an electric machine,

including winding coil groups on multi-pattern templates, installing templates in the stator bore and pushing the coil groups into the corresponding stator grooves, after pushing the first coil group from the template into the stator grooves, they insert a wedge mandrel, the number of which is no less than one coil and each coil groups, and before pushing the subsequent coil, the mandrel is removed from the stator slots.

FIG. 1 shows a stator assembled with an mnogap pattern; in fig. 2 shows a winding operation on a multi-slot pattern; in fig. 3 wedge arbor.

The method on the example of laying a two-layer equal-phase three-phase

The windings into the slots of the stator and the auto-mobile generator are as follows.

In the stator there are thirty six slots, six coil groups, in a coil group of six coils.

Six coils 3 are wound onto the multi-slot pattern 1 using the keystone-shaped pattern 2, forming a coil group. The coils are located in the slots 4 of the template 1 in one row.

Next, the pattern 1 with the first coil group is inserted into the inner bore 5 of the stator pack 6 so that the grooves 4 with the coils of the first coil group are located against the slots 7 of the stator pack 6 and all the coils of the first coil group simultaneously push up to the bottom of the slots 7 of the stator 6 (propellants not shown).

Then, the teeth (wedge) 8 of the wedge mandrel 9 are moved into the grooves of the saator, which keeps the turns of the coils from falling out of the grooves and compacts them in the groove, opposite the frontal parts of the coils 3. The mandrel 9 has six teeth. Next, another multi-groove pattern 1 with a second coil group is placed in the stator bore, the wedge mandrel 9 is pulled out of the grooves and the coils are pushed into the stator slots. After pushing the coils of the second coil group, the wedge mandrel is re-inserted into the grooves of the stator, but the wedge 8 is already positioned opposite the frontal parts of the coils of the second coil group.

To prevent the wedge mandrel from interfering with the new template with the new coil group, the additional template is cut into the multi-template template with the next coil group in the multi-template template.

After the last coil group has been installed, a wedge of either twelve or twenty-four crimped mandrels is installed in the stator grooves to secure the windings and transferred to the following operations.

The use of the WEDGE mandrel when laying multi-layer windings improves the electrical characteristics of the electric machine, since the mandrel teeth squeeze the coil windings in the area of the frontal parts. They compact them, increasing the filling ratio of the stator groove.

Claims (1)

METHOD OF LAYING WINDING IN STOVES OF ELECTRIC MACHINE STATOR, including winding of reel groups onto multi-pea patterns, installing the templates in the stator bore and pushing the coil groups into the corresponding stator slots, which means that "in order to improve the electrical characteristics. by increasing the fill factor of the stator groove, after pushing the first coil group from the template into the stator grooves, the teeth of the wedge mandrel are introduced into them, the number of which is at least one for each coil of the coil group, and the mandrel is "removed from the stator grooves before repositioning the next coil group. 9urt R