JPH07298572A - Jig for forming wave winding - Google Patents

Abstract

PURPOSE:To prevent the damage on the insulating film of a conductor effectively, and to make it possible to form a winding in the intended waveform shape positively and readily. CONSTITUTION:An inner strut 44 and an outer strut 46 are provided on a rotary table 42 in a winding jig 32. In a moving mechanism 40, a guiding jig 38 for guiding an enameled wire 36, a winding jig 32 and a guiding jig 38 are relatively moved in the axial direction and the radial direction of the rotary table 43, the enameled wire 36 is alternately wound at the inner surface of the inner strut 44 and the outer strut 46 and a waveform-shaped winding 12a is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated winding forming jig for preliminarily corrugating a winding inserted in a slot of an iron core corresponding to the slot.

[0002]

2. Description of the Related Art Generally, a motor includes a stator core (stator core) provided with windings corresponding to a predetermined number of phases,
A rotor provided with a plurality of permanent magnets on the outer peripheral surface thereof and rotatably arranged in the stator core. This type of stator core is usually constructed by integrally bonding a plurality of laminated steel plates, and windings are arranged in a plurality of slots provided on the inner peripheral surface of the stator core.

In this case, the winding is composed of an insulated conductor wire, for example, a coil formed by winding an enameled wire, and is inserted into the slot of the stator core so that it is formed in a corrugated shape in advance corresponding to the slot. ing. Slot
It is formed on the inner peripheral surface of the stator core so as to be separated from each other by a predetermined angle and arranged in parallel in the axial direction of the stator core so that the corrugated portion of the winding is bent in the axial direction and inserted into each slot.

To explain this in detail, as shown in FIG. 9, a plurality of slots 4 are provided on the inner peripheral surface of the stator core 2, and the winding 6 formed in a corrugated shape has its inner curved portion. 6a is pressed in the width direction (direction of arrow A). As a result, the winding wire 6 is inserted into each slot 4 so as to be bent by 90 ° in the arrow A direction (see FIG. 10).

[0005]

However, in the above prior art, the inner curved portion 6a and the outer curved portion 6b of the winding 6 formed in the corrugated shape are formed by punches having the same diameter in the axial direction. Therefore, the curvatures of the inner curved portion 6a and the outer curved portion 6b do not change along the width direction. Therefore, when the winding wire 6 is pressed in the width direction, the length H in the width direction does not change, and the winding wire 6 is inserted into the slot 4 while maintaining the length H. Therefore, it has been pointed out that the space factor of the winding wire 6 with respect to the slot 4 cannot be improved.

The present invention is to solve this kind of problem, and can easily and surely improve the space factor of the winding with respect to the slot of the iron core, and also has a simple structure. An object is to provide a forming jig.

[0007]

In order to achieve the above object, the present invention provides a winding inserted in a slot of an iron core,
A jig for forming a corrugated winding for preliminarily forming a corrugated shape corresponding to the slot, which is provided on a rotary table so as to correspond to one curved portion of the corrugated shape, and has a small diameter portion on the upper side. A first support column having a different diameter outer peripheral surface formed, and a different diameter outer peripheral surface provided on the rotary table corresponding to the other curved portion of the corrugated shape and having a large diameter portion formed on the upper side. It is characterized by comprising a second support and tilting means for tilting the second support toward the center of the turntable.

[0008]

In the corrugated winding forming jig according to the present invention, the conductive wire is alternately wound around the first support pillar and the second support pillar to form a corrugated winding, and then the second wire is tilted through the tilting means. The support column tilts toward the center of the turntable, and the winding can be smoothly taken out from the first and second support columns.
At that time, since the winding is formed in a corrugated shape by being wound around the outer peripheral surfaces of different diameters of the first and second columns, the inner curved portion and the outer curved portion of the corrugated shape are different from those of the winding. The curvature changes along the width direction. Therefore, when the winding is pressed in the width direction so as to be inserted into the slot of the iron core, the conductive wires forming the winding are overlapped with each other, and the length of the entire winding in the width direction is shortened.
When this winding is inserted into the slot of the iron core, the winding is inserted into the slot so that the conductors are bundled, and the space factor of the winding with respect to the slot is surely improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A jig for forming a corrugated winding according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates a motor. The motor 10 includes a stator core 14 to which three-phase windings 12a to 12c formed by a corrugated winding forming device 30 (described later) are mounted. The rotor 16 is rotatably disposed in the hollow portion 14a of the stator core 14.

The stator core 14 is formed by integrally laminating a plurality of laminated steel plates 18, and the inner peripheral surface of the stator core 14 is provided with a plurality of windings 12a to 12c. The slots 20 are provided at predetermined angular intervals and arranged in parallel in the axial direction. The rotor 16 includes a shaft 22, a yoke 24, and a plurality of permanent magnets 26 that are arranged on the outer peripheral surface of the yoke 24 at predetermined intervals.

Before being arranged on the stator core 14, the winding 12a is formed in a corrugated shape in which outer curved portions 28a and inner curved portions 28b are alternately provided, as shown in FIG. The windings 12b and 12c are similar to the winding 12a, and the winding 12a will be described below and the description of the windings 12b and 12c will be omitted.

As shown in FIG. 2 and FIG. 3, the corrugated winding forming device 30 is supplied from a winding jig 32 which is a corrugated winding forming jig according to the first embodiment, and a conducting wire supply section 34. A guide jig 38 for guiding the incoming enamel wire (conductor wire) 36 to the winding jig 32, and the winding jig 32 and the guide jig 38 in the arrow Z direction, the arrow Y direction, and the arrow X. And a moving mechanism 40 for relatively moving in the direction.

The winding jig 32 is provided on the rotary table 42 so as to correspond to the inner curved portion 28b of the winding 12a and a plurality of inner columns (first columns) 44 and the outer curved portion 28a. A plurality of outer columns (second columns) 46,
A tilting means 48 for tilting the outer column 46 toward the center of the rotary table 42 is provided.

The inner support column 44 is arranged on a virtual circumference centered on the center of rotation of the rotary table 42, and has a tapered surface (outer peripheral surface) having a smaller diameter toward the upper side. There is. Specifically, the radius of the lower end of the inner support column 44 is 15 m.
While the radius is m, the radius of the upper end of the inner column 44 is 11 mm.
And the taper is set to 1/10.

As shown in FIG. 4, the outer strut 46 is also centered on the center of rotation of the turntable 42 and the inner strut 44.
Is disposed on the virtual circumference on the outer peripheral side of the rotary table 42, has a tapered surface (outer peripheral surface) having a larger diameter toward the upper side, and the outer strut 46
Is provided with an opening 54 that is cut out in a diametrical direction from the lower end to a predetermined length in the axial direction.

The tilting means 48 is provided with a mounting member 56 having one end fixed to the outer peripheral end of the rotary table 42 and bent into a substantially L shape, and the other end extending downward of the mounting member 56 is the outer strut 46. Is disposed in the opening 54 of the. A pin 58 is fixed to the lower end edge of the outer column 46 by penetrating the mounting member 56,
The outer strut 46 is tiltable toward the center of the turntable 42 with the pin 58 as a fulcrum. Outer support 46
A plunger 60 is mounted above the pin 58 so as to be freely drawn out, and the plunger 60 is attached to the mounting member 5.
When being inserted into the hole (not shown) formed in 6, the outer strut 46 is held in a standing posture (see the solid line in FIG. 4).

As shown in FIG. 3, the rotary table 42 is
The rotary motor 64 fixed to the base 62 is fixed to a rotary shaft 64a of the rotary motor 64, and a rotary encoder 66 is connected to the rotary motor 64. The base 62 has an original position sensor 68 for detecting the original position of the rotary table 42.
Is provided on the lower surface of the rotary table 42, and a dog 70 engageable with the original position sensor 68 is provided on the lower surface of the rotary table 42, while the enamel wire 36 is provided on the upper surface of the rotary table 42.
The winding start locking member 72 is fixed.

As shown in FIG. 2, the conducting wire supply portion 34 is provided with a casing 74 for accommodating the enamel wire 36 wound in a roll shape, and the enamel wire 36 fed from this casing 74 is held by a stand 76. It reaches the guide roller 82 supported by the frame body 80 via the tensioner 78 thus formed, and is directed downward and is held by the guide jig 38. The guide jig 38 includes a horizontal arm 84, and the nozzle member 86 is provided at the end of the horizontal arm 84 with the vertical axis (Z
It is mounted so that it can rotate around its axis.

As shown in FIGS. 2 and 3, the moving mechanism 40 is provided with a rail member 88 elongated in the X-axis direction, and a column 90 disposed on the rail member 88 is elongated in the vertical direction. Yes, it is configured to be movable back and forth in the X-axis direction via ball screw means 94 connected to the X-axis motor 92. A ball screw means 98 connected to a Z-axis motor 96 is arranged in the column 90, and the horizontal arm 84 is moved forward and backward in the Z-axis direction (vertical direction) via the ball screw means 98.
Ball screw means 99 connected to a Y-axis motor 97 is arranged in the horizontal arm 84, and the horizontal arm 84 is moved forward and backward in the Y-axis direction via the ball screw means 99. As a result, the nozzle member 86 mounted on the horizontal arm 84 is movable in the three axial directions of the X axis, the Y axis, and the Z axis, and is rotatable about the Z axis.

Next, regarding the operation of the thus-configured corrugated winding forming apparatus 30, the winding jig 32 according to the present embodiment.
It will be explained in relation to.

First, the rotary table 42 is replaced by the original position sensor 6
Nozzle member 86 in a state of being arranged in the original position via 8
The tip of the enamel wire 36 derived from is fixed to the locking member 72 of the rotary table 42. Then, the turning motor 64 is rotated in the direction of the arrow in FIG.
The axis motor 92, the Z axis motor 96, and the Y axis motor 97 are drive-controlled. When the X-axis motor 92 is driven, the column 90 is displaced back and forth in the X-axis direction via the ball screw means 94, and when the Z-axis motor 96 is driven, the horizontal arm 84 is moved.
Is displaced back and forth in the Z-axis direction via the ball screw means 98,
When the Y-axis motor 97 is further driven, the horizontal arm 84 is moved forward and backward in the Y-axis direction via the ball screw means 99.

Therefore, the nozzle member 86 mounted on the horizontal arm 84 can move in the three axial directions of the X-axis, the Y-axis and the Z-axis, and the swing motor 64 and the X-axis motor 92,
By driving and controlling the Z-axis motor 96 and the Y-axis motor 97 in synchronization with each other, the enamel wire 36 led out from the nozzle member 86 can be moved along a predetermined locus. The nozzle member 86 may be movable at least in the biaxial directions of the Y-axis direction and the Z-axis direction.

As a result, the enamel wire 36 is attached to the outer strut 4
6 is alternately wound on the outer peripheral surface of the inner column 44 and the inner peripheral surface of the inner column 44, and the operation of moving in the Z-axis direction is repeated each time the rotary table 42 is circulated. As a result, the outer column 46 and the inner column The support 44 is wound in the axial direction by a predetermined number of turns.

Therefore, a wavy winding 12a in which the outer curved portion 28a and the inner curved portion 28b are alternately provided is formed, and the rotary table 42 is formed after the winding end portion of the winding 12a is cut. Taken from. that time,
The plunger 60 forming the tilting means 48 is attached to the mounting member 56.
The outer column 46 is pulled out from the rotary table 42.
Can be tilted toward the center of. Therefore, the winding 12
When a is pulled above the turntable 42, the outer support 4
6 tilts (see the chain double-dashed line in FIG. 4),
The winding 12a can be smoothly taken out without being blocked by the tapered surface 52 of the above.

In this case, in this embodiment, the enameled wire 36
Are alternately wound around the inner support column 44 and the outer support column 46 each having the tapered surfaces 50 and 52 that are inclined in opposite directions, thereby forming the wavy winding 12a. Therefore, the outer curved portion 28a and the inner curved portion 28b of the winding wire 12a have different curvatures along the width direction (axial direction) of the winding wire 12a (see FIG. 5). Therefore, when the winding 12a is pressed in the width direction to be inserted into the slot 20 of the stator core 14, the enamel wires 36 forming the winding 12a overlap each other and the winding 1a
The length H ₁ of the entire 2a in the width direction is shortened to the length H ₂ (see FIG. 6).

Therefore, when the shortened winding 12a is inserted into the slot 20 of the stator core 14, the winding 12a is inserted into the slot 20 so that the enameled wires 36 are bundled together. As a result, the space factor of the winding wire 12a with respect to the slot 20 can be easily and surely improved, and the size and performance of the motor 10 can be reduced.

The other slots 2 of the stator core 14
At 0, windings 12b and 12c which are similarly formed are arranged.

Next, the winding jig 100 according to the second embodiment.
Is shown in FIG. The same components as those of the winding jig 32 according to the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. This winding jig 100 is
A plurality of inner columns (first columns) 102 and a plurality of outer columns (second columns) 104 provided on the turntable 42;
The tilting means 48 for tilting the outer column 104 toward the center of the turntable 42 is provided.

The inner support column 102 is formed in a stepped shape having outer peripheral surfaces (outer peripheral surfaces having different diameters) 106a to 106c which are gradually reduced in diameter toward the upper side. Specifically, the outer peripheral surface 1
The radii of 06a to 106c are 13 mm and 12.
It is set to 5 mm and 12 mm. Outer pillar 104
Has outer peripheral surfaces (outer peripheral surfaces with different diameters) 108a to 108c that have a diameter that gradually increases toward the upper side, opposite to the inner column 102.

In the winding jig 100 having such a structure, the enamel wire 36 is alternately wound around the inner column 102 and the outer column 104, so that the curvature changes in three steps in the width direction (axial direction). The wavy winding 112 is formed. Therefore, when the winding 112 is pressed in the width direction,
The enamel wire 36 is overlapped with each other at each stage to form the winding 1
The length H ₃ of the entire 12 in the width direction is shortened to about 1/3. Therefore, the space factor of the winding wire 112 with respect to the slot 20 is improved, and the same effect as that of the first embodiment can be obtained.

Furthermore, a winding jig 120 according to the third embodiment is shown in FIG. The same components as those of the winding jig 32 according to the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. This winding jig 12
0 indicates a plurality of inner columns (first columns) 122 and a plurality of outer columns (second columns) 1 provided on the turntable 42.
24, and tilting means 48 for tilting the outer column 124 toward the center of the rotary table 42.

The inner support column 122 has a complex taper shape, and has a first tapered surface 126 whose diameter increases toward the upper side.
a, a second taper surface 126b (outer peripheral surface having a different diameter) having a smaller diameter from the end of the first tapered surface 126a toward the upper side, and a larger diameter from the end of the second tapered surface 126b toward the upper side. Has a short third tapered surface 126c.
Specifically, the maximum diameter of the first tapered surface 126a is 30 m.
m, the minimum diameter of the second tapered surface 126b is set to 22 mm, and the maximum diameter of the third tapered surface 126c is set to 26 mm.

The outer strut 124 has a first taper surface 128a having a smaller diameter toward the upper side as opposed to the inner strut 122, and a second taper having a larger diameter from the end portion of the first taper surface 128a toward the upper side. The surface 128b (outer peripheral surface having a different diameter) and a short third tapered surface 128c having a smaller diameter from the end of the second tapered surface 128b toward the upper side.

In the winding jig 120 thus constructed, the enamel wire 36 is alternately wound around the inner strut 122 and the outer strut 124, so that the curvature continuously changes in the width direction (axial direction). The winding 130 having a shape is formed. Therefore, the length of the winding 130 in the width direction is easily shortened, and the same effects as those of the first and second embodiments can be obtained.

[0036]

According to the jig for forming a waveform winding according to the present invention, the following effects and advantages can be obtained.

After the conductive wire is alternately wound around the first support pillar and the second support pillar to form the corrugated winding, the second support pillar is tilted toward the center of the rotary table through the tilting means. The winding can be smoothly taken out from the first and second columns.

Furthermore, since the windings are formed in a corrugated shape by being alternately wound around the outer peripheral surfaces having different diameters of the first and second support columns, the inner curving portion and the outer curving portion of the corrugated shape are the windings. The curvature changes along the width direction of. As a result, when the winding is pressed in the width direction to be inserted into the slot of the iron core, the wires forming the winding are overlapped with each other to reduce the length of the entire winding in the width direction,
The space factor of the winding with respect to the slot is surely improved.

[Brief description of drawings]

FIG. 1 is an exploded explanatory view showing a schematic configuration of a motor incorporating a winding formed by a waveform winding forming jig according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the configuration of a corrugated winding forming apparatus incorporating the corrugated winding forming jig according to the first embodiment.

FIG. 3 is a schematic configuration diagram of the waveform winding forming device.

FIG. 4 is a perspective explanatory view of an inner strut, an outer strut, and a tilting means that constitute the jig.

FIG. 5 is a partial perspective explanatory view of a winding formed by the jig.

FIG. 6 is a partial perspective explanatory view when the winding is pressed in the width direction.

FIG. 7 is a partial perspective explanatory view of a corrugated winding forming jig according to a second embodiment.

FIG. 8 is a partial perspective explanatory view of a corrugated winding forming jig according to a third embodiment.

FIG. 9 is a perspective view before inserting a conventional winding into a stator core.

FIG. 10 is a perspective view after inserting a conventional winding into a stator core.

[Explanation of symbols]

10 ... Motors 12a to 12c
... Winding 14 ... Stator core 20 ... Slot 30 ... Corrugated winding forming device 32 ... Winding jig 42 ... Rotating table 44, 46 ... Support 48 ... Tilt means 50, 52 ... Tapered surface 56 ... Mounting member 100 ... Winding cure Tools 102, 104 ... Supports 106a-106c, 108a-108c ... Outer peripheral surface 112 ... Winding 120 ... Winding jig 122, 124 ... Supports 126a-126c, 128a-128c ... Tapered surface 130 ... Winding

Claims (2)

[Claims] 1. A corrugated winding forming jig for preliminarily corrugating a winding to be inserted into a slot of an iron core corresponding to the slot, wherein one of the corrugated shapes is formed on a rotary table. Provided corresponding to the curved portion of, the first pillar having a different diameter outer peripheral surface having a small diameter portion formed on the upper side, and provided on the rotary table corresponding to the other curved portion of the corrugated shape, A corrugated winding, comprising: a second support having a large-diameter outer peripheral surface having a large diameter portion formed on an upper side thereof; and tilting means for tilting the second support toward the center of the rotary table. Forming jig. 2. The jig for forming a corrugated winding according to claim 1, wherein the tiltable second support column is arranged on the outer peripheral side of the rotary table with respect to the first support column. Jig for forming corrugated windings.