SU1309196A1 - Pin mandrel for pulling the winding in stator slots of electric motor - Google Patents

Abstract

The invention relates to special equipment for drawing the winding into the motor stator grooves and can be used in electrical engineering. The purpose of the invention is to improve the quality of the stator winding by eliminating damage to the insulation of the wire. The mandrel comprises a pusher 1 of the winding 11, pins 2 with cylindrical protrusions 3 located along the longitudinal axis of the pins 2, and a stabilizer 4 pins 2. The pins 2 are installed in the grooves of the pusher 1, the winding 11 is placed in the slot between the pushers. Then a stabilizer is put on the pins 2 4. Before being drawn in, the mandrel is oriented along the slots of the stator 13. During the pull-in, the winding 11 from the pin mandrel is poured into the slots of the stator 13, after which the mandrel is disassembled. 8 il. (L with about with with O5 / J

Description

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The invention relates to special equipment for drawing the winding into the motor stator grooves and can be used in electrical engineering.

The purpose of the invention is to improve the quality of the stator winding by eliminating damage to the insulation of the wires.

Figure 1-4 shows a pin mandrel; FIGS. 5-8 show the pins of the mandrel in the process of retracting the winding into the slots of the stator of the electric motor.

The pins of the mandrel (FIG. 1) comprise a winding pusher 1, pins 2 with cylindrical protrusions 3 located along the longitudinal axis of the pins 2, and a stabilizer 4 pins 2.

The winding pusher 1 (Figures 2 and 3) is a cylindrical body with teeth 5 and grooves 6 for pins 2. In addition: holes 8 are made under the projections 3 2 in the pusher 2. The pins 2 are provided with flanges 7 (Figures 2 and 3 ), also located along the longitudinal axis of the pins 2. The stabilizer of the pins 2 (Fig. 4) is a cylindrical body with holes 9 for the projections of the 3 pins 2 and the teeth 10.

The device works as follows.

The pins 2 are installed in the grooves 6 of the pusher 1, the cylindrical protrusions of the 3 pins 2 enter the holes 8 of the pusher 1, a coil 11 is placed in the gap between the pins 2, then a stabilizer 4 is put on the pins 2, and the cylindrical protrusions of the 3 pins 2 coincide with holes 9 of the stabilizer 4. The pins of the mandrel are now a rigid closed structure with a winding 11 located between the pins 2 and lying on the pusher 1.

Before retraction, the pin mandrel is oriented (Fig. 5) along the slots 12 of the stator 13 by means of the projections 10 of the stabilizer 4. The diameter of the mandrel corresponds to the diameter of the stator opening 13. The distance between the shoulders 7 of the pins 2 corresponds to the width of the prong 14 of the stator 13. Thus, the pitch click through,

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Ravki sospaadaet with a step along the slots 12 of the stator 13.

When the mandrel (Fig. 5) is installed in the stator 13, each tooth 14 is located between the shoulders 7 of the corresponding pin, and the adjacent shoulders 7 of two adjacent pins, 2 are included in the spline 12, therefore the slots are aligned with the slots.

During retraction, the winding 11 from the pin mandrel is poured into the grooves 15 of the stator 13, and the winding is supported by the pusher 1 and its teeth 5. There is no friction between the pins 2 and the winding 11, since there is no relative movement.

The engagement ends (Fig. 6) when the front part of the winding 11 extends beyond the stator aperture, while the push rod 1 is still in the aperture of the stator 13, after which the pin mandrel is disassembled (Figs. 7 and 8).

From the pins 2, the pusher 1 and the stabilizer 4 are removed. Before removing the pusher 1 from the opening of the stator 13 of the lobov, the part of the stator winding 1 1 is molded. The extreme pins 2 (Fig. 8) are held in the stator 13 only by their ribs 7. Therefore, they can be easily removed from the teeth 14, after which the frontal winding parts are fluffed out, since the winding 11 is between the pins 2 in the elastic-plastic state. Gaps arise between the pins 2 and the stator winding 11, therefore the remaining pins 2 are removed from the stator 13 without rubbing against the winding 11.

Claims (1)

Invention Formula The mandrel for winding the coil into the stator slots of the electric motor, comprising a winding pusher, pins and a pins stabilizer, characterized in that, in order to improve the quality of the stator winding by eliminating damage to the insulation of the wires, the pins are made with cylindrical projections at the ends, one of which installed in the pusher, and others in the stabilizer with the possibility of oceBcJro movement. eight Riga 5 Editor A. Sabo : rig 8 Compiled by E. Skorokhodov Tehred A. Kravchuk Proofreader A.Zimokosov Order 1802/50 Circulation 661 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