JPH0564539B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for installing a field coil of a rotating electrical machine into a slot in a stator core.

[Prior Art] The work of assembling a field coil into the stator core slot of a rotating electric machine such as a variety of motors involves the fact that the coil to be assembled is simply a conductor wire wound several times in an annular shape. 17th of
As shown in the figure, the work of fitting the coil 100 into the slot 102 of the stator core 101 while bending it in a wave shape in the coil circumferential direction is as follows:
This is not easy because the elastic conducting wire has the property of repelling deformation force and trying to restore its original shape, and once the coil is pushed into the slot, it tends to protrude from the slot.

The conventional method of assembling a field coil into a stator core slot will be explained by taking the case of assembling an alternator as an example, with reference to FIGS. 17 to 22. As shown in the plan view of the figure, the coil is transformed into a wave coil shaped into a wave shape, and then applied to one end surface of the stator core 101 in the axial direction with a positional relationship in which the bending angle of the coil corresponds to the stator core slot 102. , a coil inserter 103 having a coil pushing protrusion 106 facing each slot 102 is inserted into the stator core 10.
They used a method of pushing it toward the inner cavity of 1. The displacement relationship among the stator core 101, coil inserter 103, and wave coil 100 at each stage of this coil pushing process is shown in FIGS. 18 to 21. As mentioned above, during this pushing process, the wave coil 100 Since a force is generated that causes the coil to rebound and protrude out of the slot 102, a wedge 104, which acts as a cover for holding down the opening of the slot 102, is inserted in parallel with the pushing of the coil. This wedge 104 is the coil inserter 10
Although the coil 100 is in a positional relationship where it is pushed by the protrusion 106 of No. 3, it is not pushed into the slot 102 by the protrusion 106. The function of consolidating the wires together was not fulfilled, and the group of conductors had no choice but to be left in a roughly scattered state within the slot 102. This scattering of the conductive wire group results in coarsening the density of the magnetic flux produced by the field coil. Note that 105 in the figure is a spacer.

In addition, the function of squeezing the coil 100 in the slot 102 to gather the conductor wires constituting the coil in a dense manner is not fulfilled, and the conductor wires are left in a coarsely scattered state in the slot 102, which reduces the coil space factor. This impedes the improvement of the magnetic flux produced by the field coil, and causes the wedge to be inserted incorrectly due to the repulsive force of the coil, which causes damage to the core and insulation. This resulted in poor quality and huge losses.

[Object of the Invention] The present invention provides a method for assembling a field coil into a stator core slot of a rotating electric machine, by forming the field coil in advance into a shape similar to that of the assembled field coil and smaller than the inner surface of the stator core. let me,
By pushing the conductor wires into the slot in a dense manner, the repulsive force when the coil is installed is reduced, and the wires do not protrude from the core slot to the inner surface of the core even without inserting a wedge. We have developed a device for assembling field coils to stator core slots that can compress the entire conductor group and improve the state of coil crowding within the slot, whereas it was not possible to compress the entire conductor group. The purpose is to provide.

[Structure of the Invention] The device for assembling field coils to the stator of a rotating electrical machine of the present invention is disposed circumferentially and movably in the radial direction, and a stator coil for one phase is formed on the outer periphery of the device. a coil mounting base comprising a plurality of winding bars around which a conductive wire is wound in a cylindrical shape with a first outer diameter and a predetermined number of turns; and a coil fixing with the cylindrical conductive wire sandwiched between the winding bars of the coil mounting base. and a coil shaping clamp that is disposed circumferentially and radially displaceably to sandwich a portion of the cylindrical conducting wire located between the winding rods, and the clamp faces the coil mounting base. a first step of moving the coil mounting base and the clamp mounting base away from each other in the axial direction of the cylindrical conductive wire in a state where the cylindrical conductive wire is sandwiched between the mounting base, the coil fixing clamp, and the coil shaping clamp; a second moving means for moving the coil shaping clamp sandwiching the cylindrical conductive wire toward the axis in synchronization with the operation of the first moving means; , a third moving means for moving the coil fixing clamp sandwiching the cylindrical conductive wire toward the axis in synchronization with the operation of the second moving means; and the first to third moving means. A shaping coil having unevenness in the axial direction and a second outer diameter smaller than the first outer diameter, which is formed by moving the coil shaping clamp and the coil fixing clamp by the means, a shaping coil supply mechanism that guides the shaping coil to the inner circumference of the stator core having an inner diameter larger than a second outer diameter; and an axial direction of the shaping coil guided to the inner circumference of the stator core by the shaping coil supply mechanism. A shaping coil setting mechanism for positioning the shaping coil so that the extending conductive wire portion corresponds to the slot of the stator core, and an inner periphery of the shaping coil positioned by the shaping coil setting mechanism, and A coil pushing mechanism is provided that expands the shaped coil radially outward and pushes a conductive wire portion extending in the axial direction into the slot by pressing the shaped coil in the outer radial direction.

[Effects of the Invention] The apparatus for assembling field coils to the stator of a rotating electrical machine according to the present invention having the above-mentioned configuration has the following effects.

(a) When a field coil is assembled into the stator core slot of a rotating electrical machine, the coil to be assembled is shaped in advance into a shape similar to the assembled item and smaller than the inner surface of the stator core before being assembled. , it has become possible to drastically reduce the repulsive force when installing the coil. As a result, even after the slot caulking process of blocking the entrance of the core slot after the coil is installed, the coil does not protrude from the core slot to the inner surface of the core without inserting a wedge, and there is no insulation defect.

(b) Moreover, the conductive wire groups incorporated into the slots are packed in a dense state, and even within the core slot, the pressure applied to the entire conductive wire group is significantly greater than in the past. Therefore, there is no scattering of the coils within the slot, and the coils form a dense cluster, which has a great effect on improving the coil space factor.

[Example] Next, a field coil attaching device to a stator of a rotating electric machine according to the present invention will be described based on an example shown in the drawings.

First, the configuration of the coil shaping device will be explained in sequence according to FIG. 1, which is a side view of the device.
, a base fixing mechanism B for stopping the movement of the base A that is rotatable around the base support shaft, and a coil fixing clamp mechanism for fixing the coil to be shaped on the board surface of the base A. C, a coil shaping clamp mechanism D for grasping and stretching a part of the coil in order to shape the coil, and a coil shaping clamp mechanism D for moving the coil shaping clamp in a direction away from the coil fixing clamp. It consists of a shape clamp moving mechanism E, and a clamp displacement mechanism F for displacing the position of the coil clamp in accordance with the movement of the coil diameter being reduced as the coil is stretched.

The base portion A is a portion that is also used as a winding frame of a coil winding machine that can be used in combination with the coil forming device of the present invention, and is a portion that serves as a winding frame of a coil winding machine that can be used in combination with the coil forming device of the present invention. A coil mounting base 1 that can rotate as a central axis, a coil winding rod group 2 that can be displaced in the radial direction by fitting into a T-shaped dovetail groove provided radially from the center of this board surface, and the winding rod group. a slider 4 which is fitted onto the supporting shaft rod 3, is slidable up and down in the axial direction, and synchronizes the movement of the plurality of winding rods 2 via links 5; It consists of a link 5 for interlocking the movement of the winding rod 2 with the displacement movement of the winding rod 2, and the link 5 and the winding rod 2
are on the same axis.

The base fixing mechanism B is a mechanism necessary for shaping a coil, and a coil fixing clamp 11, which will be described later, is actuated by a hydraulic cylinder 12 to wind the winding rod 2 attached to the coil mounting base 1. When the coil of the rod 2 is held and shaped continuously, the coil fixing clamp 11 is used to prevent the coil from shifting in the axial direction and coming off, and when the hydraulic cylinder 7 is activated, The rod-shaped engaging member 10 of this mechanism is lowered and fitted into the engaged member 9. Next, the cylinder 8 is actuated, and the stopper 6 attached to the tip of the rod-shaped engagement member 10 moves forward, and the stopper convex portion 6a is fitted into the corner recess 1a of the coil mounting base 1, thereby connecting the coil fixing clamp 11 and the winding rod, which will be described later. Positioning in the two axial directions can be performed.

The coil fixing clamp mechanism C is a mechanism necessary for shaping the coil, and is arranged in the same radial shape as the center of the width of the winding rod 2 attached to the coil mounting base 1 and in the same number as the winding rod, A coil fixing clamp 11 having a clamp width approximately equal to the assembly pitch of the coil in the stator core slot and capable of gripping the coil between the winding rod 2 and the coil fixing clamp 11 is moved forward and backward. It consists of a hydraulic cylinder 12, a coil fixing clamp 11, and an air cylinder 13 for vertical movement, and as explained in the above-mentioned base fixing mechanism, the stopper 6 advances and the stopper convex portion 6a fits into the corner recess 1a of the coil mounting base 1. Then, the winding rod 2 and the coil fixing clamp 11 are positioned. Next, the coil clamped by a clamp stator 15 and a movable element 16 of a clamp mechanism for coil shaping, which will be described later, is transferred to the hydraulic cylinder 1.
7 and in a state where the hydraulic cylinder 7 in the moving mechanism for the coil shaping clamp described later is operated to shape the coil, the coil fixing clamp 11 is in a state where it is clamped to the winding rod 2, and the hydraulic cylinder 7 is If the operation continues to the upward side, the vertical movement air cylinder 13 will also rise. However, the coil fixing clamp 11 is positioned by the stopper 6 and cannot be raised, and when this happens, the piston rod of the air cylinder 13 remains stopped because it is connected to the stopper 6, and the cylinder tube side is connected to the hydraulic cylinder 7. It will operate in accordance with the upward movement of.

The coil shaping clamp mechanism D is a guide bar 2
an assembly base 14 which is rotatably positioned by 6 and can be slid up and down on a rolling bearing within a guide tube 25 (not shown in cross-sectional view); and a T-shaped dovetail groove provided radially from the center of this assembly base 14. A slider 18 that can be fitted in and displaced in the radial direction, and a shaping clamp having a clamp width approximately equal to the assembly pitch to the stator core slot is fixed to the sliding inner shaft side of the slider 18. Child 15 is attached. Further, a movable element 16 that is paired with the stator 15, parallel to it, and located on the outer circumferential side and capable of sliding forward and backward toward the outer circumferential surface of the stator is connected to a hydraulic cylinder 17.
By activating the hydraulic cylinder 22, the hydraulic cylinder 22 is connected to the operating rod 23 of the cylinder 22 by gripping the coil located in the middle between the stator 15 and the winding rod 2 and moving the hydraulic cylinder 22 backward. The supporting shaft rod 1 of the mounting base 14 is activated by operating the link 21
A slider 20 is fitted onto the outside of the slider 9 and is capable of vertically rotating and sliding.
The coil can be shaped three-dimensionally by transmitting the information to the hydraulic cylinder 7 and moving the slider 18 toward the center axis of the mounting base 14 while also operating the hydraulic cylinder 7 to raise the mounting base 14. Note that other links not connected to the hydraulic cylinder 22 operate other sliders 18 in accordance with the operation of the slider 20.

The moving mechanism E of the coil shaping clamp moves the mounting base 14 up and down, as described in the above-mentioned coil shaping clamp mechanism.

As described in the coil shaping clamp mechanism, the clamp displacement mechanism F-1 moves the coil V held between the stator 15 and the movable element 16 toward the center axis of the mounting base 14 by the operation of the hydraulic cylinder 22. The winding rod 2, which is clamped to the coil fixing clamp 11 by the coil fixing clamp mechanism, is fixed because the length of the wound coil is constant (mechanical elongation of the wire is not considered). As the child 15 and mover 16 move, they inevitably move toward the center axis of the coil mounting base 1. At that time, if the movement of the winding rod 2 is too fast or too slow relative to the movement of the stator 15 and mover 16, the shape of the finished coil will vary, resulting in poor product quality. The speed needs to be constant. Therefore, this clamp displacement mechanism is used to keep the speed constant.

The clamp displacement mechanism F-2 includes a hydraulic cylinder 22 for operating the slider 18 built into the mounting base 14, a link 21 for connecting the two, and a slider, as described in the coil shaping clamp mechanism, etc. The stator 15 and the movable element 16 are provided with a radial movement back and forth toward the center axis of the mounting base 14.

Next, we will explain the positional relationship of each configuration.

The center of the coil mounting base 1 in the base part A and the center of the mounting base 14 of the coil forming clamp D are coaxial, and when the mounting base 14 is lowered, the coil fixing clamp 11 of the coil fixing clamp part is attached to the winding rod 2. Located at the center, between adjacent winding rods 2, shaping clamp mechanisms of a stator 15 and a movable element 16 are arranged circumferentially at equal intervals. The link 5 of the coil fixing clamp displacement mechanism is coaxial with the winding rod 2,
The links 21 of the coil shaping clamp displacement mechanism are arranged coaxially with the slider 18.

The above-mentioned hydraulic cylinder 7 and base fixing mechanism B
constitutes a first moving means, the clamp displacement mechanism F2 constitutes a second moving means, and the hydraulic cylinder 12 constitutes a third moving means.

Next, before going into an explanation of the operation of the coil shaping device of the present invention, we will explain how a flat annular coil before shaping is shaped into a shaping coil with a three-dimensional wavy shape. The third diagram serves as an explanatory diagram of the plastic surgery process.
To explain with reference to FIGS. 7 to 7, FIG. 3 is a plan view showing the planar shape of the coil V before shaping and the arrangement of clamp groups for shaping the coil,
FIGS. 6 and 7 are a plan view and a side view of the coil W that has been shaped. The shaped coil W is more clearly shown in FIG. 15, which is a perspective view of the coil that has been shaped and assembled into the stator core slot.
FIG. 16 is a perspective view of the state in which the coils W1 to W3 for three phases have been assembled into the stator core K. Coil fixing clamp 1
1, as shown in FIG. 3, the coil V before shaping
The coil V is placed on the winding rod 2 by the force of the hydraulic cylinder 12 at a position facing the winding rods 2 whose number is equal to the number of coil poles arranged on the inside in the circumferential direction.
Secure it by sandwiching it between the A stator 15 of a coil shaping clamp is placed in the middle part of the coil V placed between adjacent coil fixing clamps 11.
A movable element 16 is arranged, and the coil in this position is held between the stator 15 and the movable element 16 of the coil shaping clamp by the force of the hydraulic cylinder 17. When this coil clamping operation is completed, the stator 15 and movable element 16 of the coil forming clamp are pulled upward together by the action of the hydraulic cylinder 7 described above, and the coil V is moved in a direction perpendicular to the coil plane. A stretching force is applied to the As the coil V is stretched, its diameter shrinks, and the coil shaping clamp and the coil fixing clamp are given an acting force that follows this shrinkage, as will be described later. The illustrated arrow (a) indicates the direction of contraction of the coil V, and (b)
also indicates the direction of elongation, and the other arrows indicate the direction of movement of the clamp group.

Next, moving on to the explanation of the forming device, first, the hydraulic cylinder 7, which also serves to move the mounting base 14 of the coil forming clamp up and down, is operated in the downward direction of the arrow (c) in the figure, and then the air cylinder 8 is moved in the direction (d). By acting, the engaged member 9 and the engaging member 10 are engaged, and the coil mounting base 1 is fixed by the action of the stopper 6. Next, the hydraulic cylinder 12 is operated in the direction indicated by E to squeeze and fix the coil V between the winding rod 2 and the coil fixing clamp 11. Further, mark the hydraulic cylinder 17 with the arrow (F)
The coil V is formed between the stator 15 and the mover 16 of the coil shaping clamp by
Squeeze and fix. These coil clamp groups have the arrangement as described above, and are assembled into this device for the number of coil poles. Therefore, the number of hydraulic cylinders corresponding to the clamp locations is also included. Next, the locking lever 31 of the knock plate 29 attached to the winding rod position displacement mechanism is unlocked by the attached air cylinder, and the knock plate pressurizing lever 30 is put into operation by the attached hydraulic cylinder. Next, the air cylinder 22 is actuated in the direction of arrow (G) to apply a force to the slider 18 to move it toward the center of the coil, and at the same time, the hydraulic cylinder 12 is actuated again to cause the coil fixing clamp 11 to move toward the center of the coil. exert force. Under such conditions, the hydraulic cylinder 7
When this is applied in the (h) direction, the coil V sandwiched between the stator 15 and the mover 16 of the shaping clamp is stretched upward and its diameter is reduced,
As shown in FIGS. 6 and 7, a shaped coil W having a wavy shape in a direction perpendicular to the plane of the coil is completed. When the movable element 16 of the shaping clamp is pulled up, the coil fixing clamp 11 is fixed by the coil mounting base 1 and the stopper 6, and the air cylinder 13 is pulled up. When the coil shaping process is completed, by stopping the force acting on the pressure lever 30 of the knot plate 29, the knot plate 29 releases its attached pressure spring 3.
3 moves downward in the figure, and the attached locking hole e is brought to a position facing the knob plate locking lever 32, and is fixed by this lever 32 and the attached locking hole e is moved downward in the figure. The shaped coil W is kept locked to the winding rod 2. After that, the air cylinder 8 moves back, the coil-equipped base 1 is released from the stopper 6, and the hydraulic cylinder 17 attached to the movable element 16 of the coil-forming clamp and the other air and hydraulic cylinders return to their original positions. The entire coil shaping process is completed.

In addition, a base part A whose main part is the coil mounting base 1 and a coil clamp displacement mechanism F attached thereto.
2, a plurality of sets thereof are installed so as to be able to rotate intermittently radially around the support shaft 34,
In this case, the three sets of base portions A are configured to simultaneously function as a coil winding station, a coil shaping station, and a shaping coil take-out station.

Next, we will move on to an explanation of the coil pushing device for assembling the shaped coil into the stator core slot.
In FIG. 2, which is a side view, the device includes a stator core supply mechanism G for continuously supplying the stator core to the coil assembly position, and a shaped coil placed on the support and continuously brought to the coil assembly position. A forming coil supply mechanism H for supplying the forming coil, a forming coil setting mechanism for inserting the forming coil into the stator core, and a coil pushing mechanism J for pushing the set coil into the stator core slot.
It is made up of.

The stator core supply mechanism G includes a stator core supply base 41 suspended from a column 40 of the device, a stator core supply conveyor 42 installed on the base 41, and a stator core supply conveyor 42 installed thereon.
A stator core mounting pallet 43 placed on the conveyor 42 and positioned in the rotational direction of the stator core.
and a bending tool 44, which is set perpendicular to the flow direction of the pallet 43 and toward the center of the stator core K housed in the pallet, and pushes the coil lead wire into the required slot before installing the coil, and its reciprocating air. It is composed of a cylinder 45.

The shaping coil supply mechanism H has a cylindrical shape in which the coil W shaped by the shaping device is provided with a coil storage groove f in the same form as when it is removed from the winding rod 2 and finished shaping, although it is not shown. The coil group on the side clamped by the winding rod 2 and the coil fixing clamp 11 in the coil support cylinder 46 is transferred into the groove of the coil support cylinder 46. The coil support cylinder 46 is located between the coil positioning lower jig 52 at the bottom part j.Although not shown in the figure, the coil support cylinder 46 is slidable up and down on the inner surface of the bottom part j.
8 always applies an upward load.
This is because when the coil positioning upper jig 57 present in the coil pushing mechanism J, which will be described later, descends and engages with the coil positioning lower jig 52, the coil support cylinder 46 is bent by the spring 48 and the coil support is It is adapted to slide down a cylinder shaft 47 shaft. Further, a lower coil positioning jig 52 is attached to the upper end surface of the coil supporting cylinder shaft 47. A coil protector 49 protects the outer circumference of the coil support tube 46 so that the transferred coil W does not protrude from between the coil support tube 46 and the lower coil positioning jig 52.
The coil protector 49 is rotationally positioned by a guide 50a, and an upward load is applied by a coil spring 50. The coil support cylinder shaft 47 is attached to a base 51, and the base 51 is rotationally positioned on a rotary disk 53 by a guide bar 55 and is slidably fitted into the rotary disk 53.

The shaping coil setting mechanism includes a hydraulic cylinder 54 for pushing up the base 51 of the coil support cylinder shaft 47 and inserting the shaping coil W into the stator core K, and a rotary disk 53 for guiding the vertical movement of the base 51. and a stator core supply base 41, and guide bars 55 and 56 implanted in the stator core supply base 41, respectively.

The coil pushing mechanism J aligns the shaped coil W with the assembly position of the stator core slot g along the inner surface of the stator core set in advance on the pallet 43, maintains the rotational position, and pushes the shaped coil W from below the lower end surface of the stator core K. The lower coil positioning jig 52 is raised so as not to come into contact with the inner diameter of the stator.
This state is shown in FIG. Next, the drawing line protruding from the inner surface of the core is pushed into the required slot using the bending tool 44, as shown in FIG. 10. Continuing on, the upper coil positioning jig 5 has the same shape as the coil positioning lower jig 52 and is moved along the inner surface of the stator core from above the upper end surface of the stator core.
7 is lowered, the lower coil positioning jig 5
2 and is inserted and fitted into the bottom part j. At this time, as described above, the coil support cylinder 46 descends downward while being in contact with the lower end surface of the upper coil positioning jig 57 by the coil spring 48, as shown in FIG. At this time, the portion of the coil support cylinder 46 that holds the coil is shortened on the outer peripheral side so that there is no interference of the coil during assembly. Further, in the upper coil positioning jig 57, a plurality of coil pushers 63 are used to incorporate the coils set by the above-mentioned upper and lower jigs so as to expand radially in the stator core slot g and in the direction of the outer circumference of the core. is held so that it can slide up and down. When the coil pusher 63 is lowering to the upper end surface of the stator core K and assembling the coil, the coil pushing surface has an inclined surface that gradually separates (as shown in FIGS. 11 to 13), and the coil pusher 63 partially touches the stator core K. While the coil is fitted into the slot g, the coil installed in the slot g moves up and down along the portion that contacts the inner surface of the core, thereby allowing dense coil assembly. A cross-sectional plan view thereof is shown in FIG. As described above, the coils are pre-shaped so that they are neatly housed in the slots of the stator core, so even after being pushed by the coil pusher 63, the conductor wires are tightly and neatly gathered together. The desired state will be maintained. In addition, since no repulsive force is generated due to the coil's deformation and restorability, there is no fear that the coil will jump out of the slot, and therefore the time and expense of covering the slot opening with a wedge, which was required in the past, is no longer necessary.

When the assembly of the shaped coil W to the stator core K is completed, the hydraulic cylinders 58, 64, and 54 return to their original positions, and the stator core conveyor 42 moves to replace the assembled stator core with a new stator core. The shaping coils for the second phase and the third phase are each transferred to separate coil assembling devices and individually assembled there.

[Brief explanation of the drawing]

FIGS. 1 and 2 are side views separately depicting a coil shaping device portion and a coil pushing device portion of a field coil assembling device to a stator of a rotating electrical machine according to the present invention, and FIGS. Fig. 5 is an explanatory diagram of the coil forming process, Figs. 6 and 7 are a plan view and a side view of the coil after forming, and Figs. 8 and 9 are illustrations of the process of inserting the formed coil into the stator core. Fig. 10 is a top view of the state in which the coil lead wire is bent, and Figs. 11 to 13 show the process of pushing the shaped coil into the stator core slot using a coil presser. 14 is a partial cross-sectional view of the state in which the coils have been pushed in, and FIGS. 15 and 16 are perspective views of the stator core with one-phase and three-phase coils installed, respectively. 17 to 22 are schematic illustrations of a conventional method for assembling coils to a stator core. In the figure, 1... Coil mounting base, 2... Coil winding rod, 3... Shaft rod for supporting the coil mounting base, 4, 2
0...Slider, 5, 21...Link, 6...
Stopper, 9, 10... Engaged member and engaging member, 11... Coil fixing clamp, 14...
Mounting base for coil shaping clamp, 15, 16...
...Stator and mover of coil shaping clamp,
18... Slider, 19... Shaft rod for supporting the mounting base of the coil shaping clamp, 23... Operating rod, 24
... Support column, 25 ... Guide tube, 26 ... Guided bar, 27 ... Bar, 29 ... Knock plate,
30... Pressure lever, 31, 32... Knob plate locking lever, 34... Support shaft, 40... Support column, 41... Stator core supply base, 42... Stator core conveyor, 43... Stator core Placement pallet, 44... Coil leader wire bending tool, 46... Coil support tube, 47... Coil support tube shaft, 49... Coil protection tube, 51...
... Coil support cylinder shaft base part, 52 ... Lower jig for coil positioning, 53 ... Turning plate, 55, 5
6... Guide bar, 57... Upper jig for coil positioning, 61... Upper jig mounting board, 62... Bar,
63...Coil pressure, 7, 12, 17,
22, 54, 58, 64...hydraulic cylinder,
8, 13, 45... Air cylinder, K... Stator core, V... Coil before shaping, W... Shaping coil, g... Stator core slot.

Claims (1)

[Claims] 1. Circumferentially and radially displaceably disposed,
a coil mounting base having a plurality of winding rods around the outer periphery of which a conductive wire forming a stator coil for one phase is wound in a cylindrical shape with a first outer diameter and a predetermined number of turns; a coil-fixing clamp that sandwiches the cylindrical conducting wire with rods; and a coil-shaping clamp that is disposed circumferentially and movably in the radial direction and that holds a portion of the cylindrical conducting wire located between the winding rods. a clamp mounting base that is provided with a clamp and faces the coil mounting base; and the coil mounting base and the clamp mounting base in a state where the cylindrical conductive wire is sandwiched between the coil fixing clamp and the coil shaping clamp. a first moving means for moving the coil-forming clamp away from the cylindrical conductor in the axial direction of the cylindrical conducting wire; and synchronously with the operation of the first moving means, the coil-forming clamp holding the cylindrical conducting wire is moved toward the axial center. a second moving means that used to move; and synchronizing with the operation of the first and second moving means,
a third moving means for moving the coil fixing clamp sandwiching the cylindrical conducting wire toward the axis; and the coil shaping clamp and the coil fixing clamp by the first to third moving means. A shaping coil having an unevenness in the axial direction and having a second outer diameter smaller than the first outer diameter is placed inside a stator core having an inner diameter larger than the second outer diameter. A shaping coil supply mechanism that guides the shaping coil to the circumference, and a conductive wire portion extending in the axial direction of the shaping coil guided to the inner periphery of the stator core by the shaping coil supply mechanism so as to correspond to the slot of the stator core. , a shaping coil setting mechanism for positioning the shaping coil; and a shaping coil setting mechanism that contacts the inner periphery of the shaping coil positioned by the shaping coil setting mechanism and presses the shaping coil in the outer radial direction. ,
A field coil assembly device for assembling a field coil to a stator of a rotating electrical machine, comprising: a coil pushing mechanism for expanding the shaped coil radially outward and pushing a conductor portion extending in the axial direction into the slot.