SU1297173A1 - Method and apparatus for manufacturing the winding coil of electric machine - Google Patents

Abstract

The invention relates to technology and manufacturing equipment for the manufacture of electrical machines and can be used in electrical engineering in the manufacture of hydrogenerators and synchronous compensators. The purpose of the present invention is to improve the quality of the manufactured products by providing a predetermined geometric shape of the coil, as well as simplifying the manufacturing technology. Lower 1 and upper 2 cores insulated thermosetting curedJ 8 & P 1 JO, G G 7312 SL C Jt phi

Description

129

This insulation is placed in closed grooves of the device 5 with a length equal to the length of the slot portion of the rod formed by fixed 11 and movable 12 rulers. The lower rod 1 is placed in a closed groove in the position corresponding to its position in the car, fix the slot part. The ends of the rods are made uninsulated and allowable for machining lengthwise, are placed in the slots of devices 8 located along the edge of the device 5. Then the ends are pressed in height and width and bent at a right angle to form the coil head. Next, the end surfaces of the rods are mechanically treated, which are the places of their contact in the head. The upper rod 2 is set to

one

The invention relates to technology and technological equipment for the manufacture of electrical machines and can be used in the electrical technical industry in the manufacture of hydrogenerators and synchronous compensators.

The aim of the invention is to improve the quality of manufactured products by providing a predetermined geometric shape of the coil, as well as simplifying the manufacturing technology. FIG. 1 shows the arrangement and arrangement of the rods during processing, the left half in FIG. 2 is a view A of FIG. 1; in fig. 3 shows a section BB in FIG. 25, FIG. 4 - winding coil

The method of manufacturing the coil rods of the electric machine winding is carried out in the following technological sequence.

The lower rods 1 and the upper rods 2, insulated with thermosetting cured insulation, are alternately placed into closed grooves — the lower rod 1 into the groove 3, and the upper rod 2, rotated 180, into the groove 4 of the device 5 with a precast frame 6, in which the rods rigidly attached along the length of the groove. Frontal parts

73

similar groove of the device 5, but turn it 180 ° so that its end can be bent upwards. The straight ends of the upper shaft are placed in the same grooves of the fixture 8 as the ends of the lower bar. After machining, the lower 1 and upper 2 rods are placed in a device for controlling geometric parameters, equipped with rulers forming a groove located between two similar grooves in which the base rods are located. Then the slotted parts are fixed, the matching of the end contact surfaces of the heads of the upper and lower rods and the conformity of the shape of the frontal parts and heads to the base rods are checked. 2 cf f-crystals, 4 Il.

0

five

.

25 jq

0

are in a free state and their position corresponds to the position of the coil in the stator slots. The uninsulated ends of the rods 1 and 2, consisting of two rows of elementary conductors, are made with an allowance and placed in the sockets 7 of the devices 8,

In the process of placing the rods, the slot parts are arranged symmetrically with respect to the vertical support plates 9, which are installed at a distance equal to the length of the groove part, and are fixed between the fixed rulers 11 and the movable rulers 12 with the drive 13 by means of the stops 10. The rods of the rod 14 and the gate 15, the pressure is compressed until the elementary conductors are tightly compressed; in this case, on one side of the rod, the angle between the axes of the slot part and the end is equal to half the coil pitch along the slots, t, e. equal to the angle, and from the opposite side of the rod, from the side of the conclusions, one groove division is smaller. Then, along the gate 15, the ends of the rod are folded in a plane, perpendicular to the axis of the machine, with flexible heads 16 pivotally connected to pneumatic cylinders 17, and

31 2

mechanical machining of the facing surfaces 18 of the junction rojioBkM 19 by a tilting cutting tool 20 hinged through the lever 21 to the pneumatic cylinder 22. Since the ends of the upper and lower rods are molded without adjusting the devices 8 with equal angles d between the axes of the slot parts and the ends of the rods, provides complete coincidence of the contact surfaces of the upper and lower rods in the head when they are placed in the slots of the stator, after which the finished lower 1 and upper 2 rods are installed in the corresponding grooves 23 and 2A I They are provided with base straps 25 and 26, rigidly fixed in the frame 6, and arranged in length so that the planes 27 of the heads coincide with the outer sides of the control plates 28. Clamp the slot parts of the rods in the shaped rulers 29 with movable rulers 30 hingedly connected to pneumatic cylinder 31. Then, the geometrical dimensions of each rod are monitored, including measurements of the gaps in the frontal parts, the rod’s adhesion to the vertical plates 32 imitating the retaining rings of the machine, the heads of the 19 rods coinciding and the docking contact surfaces 18.

The device 5 for making the coil of an electric machine winding is made in the form of movable support tables 33 on which a prefabricated frame 6 is mounted. It consists of two or more vertical plates 9 interconnected by shaped rulers 11, to which movable rulers 19 sec. drive 13, forming two grooves 3 and 4 for mounting the lower and upper rods. Additionally, plates 9 are connected by shaped rulers 29, which with non-hinged movable rulers 34 and movable 30, hingedly connected to a pneumatic cylinder 31, form two groups of grooves, each of which consists of three grooves 23 and 24. In the extreme grooves 23 and 24 are installed, respectively the lower 25 and upper 26 base rods, and the middle grooves are used to install the lower and upper rods manufactured respectively. Adjustable stops 10 are attached to the outer sides of the plates 9 for fixing the rods in the longitudinal direction. In the zone

7.34

The front parts of the rods have plates 32 that imitate the banding rings of the wrapped stator, and two FHie plates 28, which have radial grooves 35 with inserts for the heads of rods. The distance between the outer sides of the plates 28 is equal to the distance L between the heads of the rods. On both sides of the frame 6 in the upper plate of the supporting tables 33 there are windows 36 for mounting the devices 8 resting on the strips 37 and screws 38. The fixture 8 contains a welded body 39, the guide grooves of which are equipped with a punch 14 with the possibility of reciprocating movement and a spring-loaded gate 15 from the efforts of the pneumatic cylinder 40 through the lever 41. The flexible head 16, hingedly connected to the pneumatic cylinder 17, and the lever 21, with United with a folding cutting tool 20 and an air cylinder 22.

The plates 9, 28, 32 of the frame 6 and the devices 8 have grooves (not shown) for fixing them in the transverse direction by means of the guide bar 42.

The invention provides for obtaining the correct geometric shape of the frontal part and the coil head, increasing the electrical strength of the insulation by eliminating the deformation of the frontal parts, eliminating possible insulation breakdowns when laying the coils into the grooves of the stator magnetic circuit, and simplifying the process of manufacturing rods and winding assembly.

Claims (2)

1. A method of manufacturing a winding coil of an electric machine, including fixing the slotted parts of the rods in the fixture between the stationary and driving rulers at a position corresponding to their position in the machine, fixing the frontal parts and forming uninsulated ends of the rods with the formation of a head that is in order to improve the quality of the manufactured products by providing a given geometric shape of the coil, as well as to simplify the manufacturing technology, the bare ends of the rod are made with an allowance m in length, pe512971 Edging is done by crimping the ends, and molding is performed by bending in a plane perpendicular to the axis of the machine, followed by machining the surfaces of the shank rods. 2. An apparatus for producing a coil winding an electric machine. containing a base on which a prefabricated frame is installed, including base plates, bearing fixed and movable in the direction perpendicular to the axis of the rod, rulers forming, when paired, grooves for accommodating the slot part of the rod, characterized in that manufactured products by ensuring 736 . This coil geometry, as well as the simplification of manufacturing technology, is equipped with adjustable stops for fixing the rods against longitudinal movement, fixed to the support plates from the outside, and a device for controlling the geometric parameters of the rod, made in the form of two plates with grooves for placement in them along the edges m base, and in the middle of the manufactured rods installed parallel to the base plates at a distance from each other, corresponding to the distance between the heads of the rods, while in the support The slabs are grooved at an angle corresponding to the coil pitch angle in the machine for the passage of the upper and lower rods. WadA thirty n i: t Editor A, Lezhnina Compiled by G. Mayorov Tehred A.Kr avchuk Proofreader A. Tsko Order 791/58 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 Phag4