JP2901869B2 - Corrugated winding forming device - Google Patents

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 apparatus for forming a winding inserted into a slot of an iron core into a corrugated shape in advance corresponding to the slot.

[0002]

2. Description of the Related Art In general, a motor includes a stator core (stator core) provided with windings corresponding to a predetermined number of phases;
And a rotor provided with a plurality of permanent magnets on the outer peripheral surface and rotatably disposed in the stator core. This type of stator core is usually formed by integrally bonding a plurality of laminated steel sheets, and windings are provided in a plurality of slots provided on the inner peripheral surface of the stator core.

[0003] Incidentally, the above-mentioned winding is made of a coil wound around an insulated conductor, for example, an enameled wire, and is inserted into a slot of a stator core. There is. Slots are formed on the inner peripheral surface of the stator core at a predetermined angle and are 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. is there.

Therefore, conventionally, as shown in FIG. 14, after winding an enamel wire 4 around a plurality of columns 2 arranged in a ring shape to form a winding 6, a space corresponding to each gap between the columns 2 is formed. When the outer punch 8 is pressed against the lever winding 6, a waveform (see a two-dot chain line) is formed.

[0005]

However, in the above-mentioned prior art, since the outer punch 8 is pressed against the winding 6 formed in a ring shape in advance to forcibly form a waveform, the outer punch 8 and the The insulating coating of the enameled wire 4 that slides on the support 2 is easily damaged. Therefore, the problem that the quality as a winding deteriorates is pointed out. Further, in order to avoid this kind of damage, it is necessary to reduce the pressing force by the outer punch 8, which causes a problem that insufficient pressing occurs and a predetermined waveform shape cannot be obtained.

SUMMARY OF THE INVENTION The present invention has been made to solve this kind of problem, and can effectively prevent damage to an insulating film of a conductive wire, and can surely and easily form a winding into a desired waveform. It is an object of the present invention to provide a corrugated winding forming apparatus capable of performing the above.

[0007]

In order to achieve the above-mentioned object, the present invention provides a method of forming a winding inserted in a slot of an iron core, comprising the steps of:
What is claimed is: 1. A corrugated winding forming apparatus for forming a corrugated shape in advance corresponding to said slot, comprising: a first support corresponding to an inner curved portion of said corrugated shape; A winding jig provided with a corresponding second support, a guide jig for guiding the conductor supplied from the conductor supply unit to the winding jig, the winding jig and the guide jig. The tool is relatively moved in the axial direction and the radial direction of the rotary table, and the lead wire guided by the guide jig is alternately formed on the inner peripheral surface of the first support and the outer peripheral surface of the second support. And a moving mechanism for winding to form a waveform winding.

[0008]

In the corrugated winding forming apparatus according to the present invention, the rotary table forming the winding jig is rotated, and the winding jig and the guide jig are moved under the action of a moving mechanism. It moves relatively in the axial and radial directions. Thereby, the conductor is guided by the guide jig while being fed out from the conductor supply unit, and is alternately wound around the inner peripheral surface of the first support and the outer peripheral surface of the second support, thereby facilitating winding of a desired waveform. And it can be formed efficiently. In addition, no excessive pressing force is applied to the conductor, and damage to the conductor is prevented as much as possible, so that a high-quality waveform winding can be reliably formed.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an apparatus for forming a corrugated winding according to the present invention.

In FIG. 1, reference numeral 10 denotes a motor. The motor 10 has a three-phase winding 12 formed by a waveform winding forming apparatus 30 (described later) according to the present embodiment.
The stator core 14 is provided with the stator cores 14a to 12c, and 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. On the inner peripheral surface of the stator core 14, a plurality of steel plates 18 for arranging the windings 12a to 12c are provided. Slots 20 are provided spaced apart by a predetermined angle and juxtaposed in the axial direction. The rotor 16 includes a shaft 22, a yoke 24, and a plurality of permanent magnets 26 disposed on the outer peripheral surface of the yoke 24 at a predetermined angle.

Before the winding 12a is arranged on the stator core 14, as shown in FIG. 2, the winding 12a is formed in a waveform shape in which outer curved portions 28a and inner curved portions 28b are provided alternately. Then, the outer curved portion 28a is indicated by an arrow Z in FIG.
In _two directions, the inwardly curved portion 28b is, in FIG. 2, is inserted into each slot 20 of the stator core 14 so as to be bent by about 90 ° each in the arrow Z ₁ direction. The windings 12b and 12c are the same as the winding 12a,
The following description will be made using only the winding 12a,
The description of 2b and 12c is omitted.

As shown in FIGS. 2 and 3, the corrugated winding forming apparatus 30 according to the first embodiment includes a plurality of inner struts (corresponding to the inner curved portion 28b of the winding 12a) on the turntable 32. A first jig (34) and a plurality of outer struts (second struts) 36 corresponding to the outer curved portions 28a are supplied from a conductor jig 38 provided with a winding jig 38 provided at predetermined angular intervals. A guide jig 44 for guiding an enamel wire (conductive wire) 42 to the winding jig 38;
8 and the guide jig 44 in the axial direction (arrow Z direction) and the radial direction (arrow Y and arrow X) of the rotary table 32.
Direction), and the enamel wire 42 guided by the guide jig 44 is alternately wound around the inner peripheral surface of the inner support 34 and the outer peripheral surface of the outer support 36 to form a corrugated winding 1.
And a moving mechanism 46 for forming 2a.

As shown in FIG. 3, the turntable 32
The rotary motor 50 is fixed to a base 48 and is fixed to a rotating shaft 50 a of the rotary motor 50. A rotary encoder 52 is connected to the rotary motor 50. An original position sensor 54 for detecting the original position of the turntable 32 is provided on the base 48.
On the lower surface of the rotary table 32, a dog 55 that can be engaged with the original position sensor 54 is provided. On the upper surface of the rotary table, a locking member 56 for starting winding of the enamel wire 42 is provided. It is fixed.

The conductive wire supply section 40 includes a casing 58 for accommodating the enameled wire 42 wound in a roll shape, and the enameled wire 42 fed from the casing 58 is provided.
Reaches the guide roller 66 supported by the frame 64 via the tensioner 62 held by the stand 60, and is further held downward by the guide jig 44.

The guide jig 44 has a horizontal arm 68,
A nozzle member 70 is mounted on an end of the horizontal arm 68 so as to be rotatable around a vertical axis (Z axis). As shown in FIG. 4, an insertion hole 72 is formed in an upper part of the nozzle member 70,
The insertion hole 72 communicates with a nozzle outlet 76 via a passage 74 provided in the nozzle member 70 in a vertical direction. The nozzle outlet 76 is inclined at a predetermined angle with respect to the horizontal direction.

As shown in FIGS. 2 and 3, the moving mechanism 46 has a rail member 78 elongated in the X-axis direction, and a column 80 provided on the rail member 78 is elongated in the vertical direction. In addition, it is configured to be able to advance and retreat in the X-axis direction via ball screw means 84 connected to the X-axis motor 82. A ball screw means 88 connected to a Z-axis motor 86 is provided in the column 80, and the horizontal arm 68 is moved forward and backward in the Z-axis direction (vertical direction) via the ball screw means 88.
A ball screw means 92 connected to a Y-axis motor 90 is provided in the horizontal arm 68, and the horizontal arm 68 moves forward and backward in the Y-axis direction via the ball screw means 92. Thus, the nozzle member 70 mounted on the horizontal arm 68 is movable in three axial directions of the X axis, the Y axis, and the Z axis, and is rotatable around the Z axis.

As shown in FIG. 3, the turning motor 50, the rotary encoder 52 and the home position sensor 54 are connected to a first controller 94. The X-axis motor 82, the Z-axis motor 86, and the Y-axis motor 90 have position sensors 96, 98, and 1 for detecting positions in respective axial directions.
The X-axis motor 82, the Z-axis motor 86 and the Y-axis motor 90 and the position sensors 96, 98 and 100 are connected to the second controller 102.

The first controller 94 includes the swing motor 50
A program for controlling the rotation of is stored.
In this program, a rotation angle, a rotation speed, a rotation acceleration, and the like are specified. The second controller 102 stores a program for moving the nozzle member 70 to a predetermined position. The program includes three axes (X axis, Y axis).
(Axis and Z axis), stroke speed, acceleration, and the like are specified.

The first controller 94 and the second controller 102 are connected to a control panel 104. The control panel 104 is connected to the first controller 94 and the second controller 10 by a sequential ladder program.
The second program is started, and when the completion signal is received, the next program is started.

Next, the operation of the waveform winding forming apparatus 30 configured as described above will be described.

First, the rotary table 32 is connected to the home position sensor 5.
The nozzle member 70 is disposed at the original position via the nozzle member 70.
Is fixed to the locking member 56 of the rotary table 32. And control panel 1
When a program start signal is input from 04 to the first controller 94, the turning motor 50 is rotated in the direction of the arrow in FIG. 2, and the rotational position of the turning motor 50 is detected by the rotary encoder 52.

On the other hand, when a program start signal is input from the control panel 104 to the second controller 102, the drive of the X-axis motor 82, the Z-axis motor 86, and the Y-axis motor 90 is controlled. When the X-axis motor 82 is driven, the column 80
Moves forward and backward in the X-axis direction via ball screw means 84,
When the Z-axis motor 86 is driven, the horizontal arm 68 moves forward and backward in the Z-axis direction via the ball screw means 88. When the Y-axis motor 90 is further driven, the horizontal arm 68 moves the ball screw means 92. Through the actuator in the Y-axis direction.

Therefore, the nozzle member 70 mounted on the horizontal arm 68 can move in three directions of X-axis, Y-axis and Z-axis.
The drive control of the Z-axis motor 86 and the Y-axis motor 90 is performed in synchronization, so that the enamel wire 42 derived from the nozzle outlet 76 of the nozzle member 70 can be moved along a predetermined trajectory. .

That is, when the outer column 36 approaches the nozzle member 70 due to the rotation of the rotary table 32, the nozzle member 70 is moved to the outside of the outer column 36, and the enamel wire 42 is moved to the outer column 36. (See A and B in FIG. 5). Next, when the inner support 34 approaches the nozzle member 70 side, the nozzle member 70 is moved to the center side of the turntable 32 (see C to E in FIG. 5). Enamel wire 42 on the circumference
Is wound (see F and G in FIG. 5). Then, the nozzle member 70 is moved radially outward of the rotary table 32 (see H and I in FIG. 5), and the work of winding the enamel wire 42 around the outer peripheral surface of the new outer support 36 is disclosed (FIG. 5).
Middle, J). The nozzle member 70 has at least Y
What is necessary is just to be able to move in two axial directions of the axial direction and the Z-axis direction.

As a result, the enameled wire 42 is
6 with wound alternately on the outer circumferential surface and the inner circumferential surface of the inner post 34, the operation of moving the Z ₁ axial direction (see FIG. 2) is repeated every time around the rotary table 32, consequently, the The outer support 36 and the inner support 34 are wound by a predetermined number of turns in the axial direction.

At this time, the enamel wire 42 is connected to the casing 5
8, is introduced into the passage 74 from the insertion hole 72 of the nozzle member 70 under the guide action of the guide roller 66 in a state where a predetermined tension is applied by the tensioner 62, and is drawn out from the nozzle outlet 76. For this reason, when the enamel wire 42 is alternately wound around the outer peripheral surface of the outer support 36 and the inner peripheral surface of the inner support 34, the enamel wire 42 does not loosen. Also, the nozzle outlet 7 of the nozzle member 70
As shown in FIG. 5, the wire 6 is always oriented in the tangential direction between the outer support 36 and the inner support 34 at the time of the winding operation, so that it does not make one rotation at the time of the winding operation, and the entanglement of the enamel wire 42 is surely achieved. Can be prevented.

Accordingly, a winding 12a having a wavy shape in which the outer curved portions 28a and the inner curved portions 28b are provided alternately is formed. After that, it is inserted into the slot 20 of the stator core 14. The stator core 14 has a winding 1 formed in the same manner as the winding 12a.
2b and 12c are provided.

In this case, in the first embodiment, the outer support 36
By rotating the rotary table 32 provided with the inner support 34 and displacing the nozzle member 70 at least in the Y-axis direction and the Z-axis direction, the enamel wire 42 is connected to the outer peripheral surface of the outer support 36 and the inner support 34. Can be alternately wound around the inner peripheral surface of the sheet. Therefore, the windings 12a to 12c having a desired waveform in which the outer curved portions 28a and the inner curved portions 28b are provided alternately are formed automatically and reliably.

For this reason, the conventional ring-shaped winding 6 is used.
Is formed, the outer peripheral surface of the winding 6 is pressed by the outer punch 8 to form a winding shape, compared with the windings 12a to 12c.
No excessive pressing force acts on the enamel wire 42
Can be reliably prevented from being damaged. This makes it possible to effectively maintain the quality of the windings 12a to 12c, and to make the windings 12a to 12c effective.
12c can be efficiently and easily formed in a predetermined waveform shape.

Next, a waveform winding forming apparatus 110 according to a second embodiment will be described with reference to FIGS. The same components as those of the waveform winding forming apparatus 30 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The corrugated winding forming apparatus 110 includes a winding jig 38, a guide jig 112, and an X-axis
A moving mechanism 114 for moving in three axial directions of the Y axis and the Z axis (at least in two axial directions of the Y axis and the Z axis). The guide jig 112 includes a support frame 116 fixed to the base 48, and the nozzle member 70 is rotatably held by the support frame 116 (see FIG. 7).

The moving mechanism 114 is a Z-axis table 1 guided by a plurality of guide rods 118 erected on the base 48.
20. The Z-axis table 120 includes a Z-axis motor 1
It can be raised and lowered under the action of the ball screw 22 and the ball screw means 124. A guide rail 126 is provided on the Z-axis table 120.
An X-axis table 128 is placed via the X-axis.
The axis table 128 can move forward and backward in the X-axis direction via an X-axis motor 130 and ball screw means 132 provided on the Z-axis table 120. A Y-axis table 136 is mounted on the X-axis table 128 via a guide rail 134. The Y-axis table 136 is provided with a Y-axis motor 138 and ball screw means 140 provided on the X-axis table 128. Can move forward and backward in the Y-axis direction.
The rotary table 32 is mounted on the Y-axis table 136 via the turning motor 50.

The waveform winding forming apparatus 1 thus configured
10, the rotation table 32 is rotated, and the Z-axis motor 122, the X-axis motor 130, and the Y-axis motor 138 are driven and controlled, so that the Z-axis table 120, the X-axis table 128 And the Y-axis table 136 moves in the Z-axis, X-axis, and Y-axis directions. For this reason, the rotary table 32 can be selectively moved in the Z-axis, X-axis, and Y-axis directions while rotating, and the nozzle member 7 held at a predetermined position via the support frame 116 is supported.
The enameled wire 42 drawn out of the rotary table 32 is alternately wound around the outer peripheral surface of the outer column 36 and the inner peripheral surface of the inner column 34 of the rotary table 32, and has a desired waveform of the windings 12a to 12a-1.
2c is automatically formed.

Accordingly, in the second embodiment, similarly to the first embodiment, it is possible to form the high-quality windings 12a to 12c by reliably preventing damage to the insulating coating of the enameled wire 42. In addition, the effect that the windings 12a to 12c can be efficiently and easily formed in a predetermined waveform shape is obtained.

By the way, in the first and second embodiments,
Although the nozzle member 70 is configured to guide one enamel wire 42, the present invention is not limited to this.
A plurality of enamel wires 42 can be guided simultaneously. That is, another nozzle member 1 shown in FIGS.
50 has insertion holes 152a to 152d for guiding the four enamel wires 42 at the same time.
The nozzle outlets 156a to 156d communicate with the lower end side of the passage 154 communicating with 2a to 152d in a horizontal direction.

The nozzle outlet 156a~156d is (see FIG. 8) staggered is formed in a shape, thereby to be capable of reducing the pitch P ₁ to P ₃ between each nozzle outlet 156a~156d as possible Become. Therefore, the four enamel wires 42 are wound around the outer peripheral surface of the outer column 36 and the inner peripheral surface of the inner column 34 at a minimum interval.

In the vicinity of the nozzle outlets 156a to 156d, guide rollers 158a to 158d for horizontally directing the four enamel wires 42 directed downward through the passage 154 are provided rotatably. By disposing the guide rollers 158a to 158d,
Damage to the insulating coating of the enameled wire 42 can be reduced as much as possible.

When the nozzle member 150 configured as described above is used, four enamel wires 42 can be supplied at the same time, and the production efficiency of the windings 12a to 12c is improved at a stroke. can get.

Further, in still another nozzle member 160 shown in FIGS. 10 and 11, nozzle outlets 162a to 162h are formed in a staggered manner to simultaneously supply eight enamel wires 42. Each nozzle outlet 162a-162h
, Guide rollers 164a to 164d and 164e to 164 for guiding the respective enamel wires 42 are provided.
h are arranged in two rows.

In still another nozzle member 170 shown in FIGS. 12 and 13, nozzle outlets 172a to 162o are formed in a zigzag shape to supply 15 enamel wires 42 at the same time. Each nozzle outlet 172a-172o
Are guide rollers 174a to 174e and 174f to 174 for guiding the respective enamel wires 42.
j and 174k to 174o are arranged in three rows.

[0042]

According to the waveform winding forming apparatus of the present invention, the following effects and advantages can be obtained.

As the rotary table is rotated, the winding jig and the guide jig move relative to each other in the axial direction and the radial direction of the rotary table. It is wound alternately around the inner peripheral surface of the support and the outer peripheral surface of the second support. This makes it possible to easily and efficiently form a winding having a desired waveform. Moreover,
An excessive pressing force is not applied to the conductor, and damage to the conductor is prevented as much as possible, so that a high-quality corrugated winding can be reliably formed.

[Brief description of the drawings]

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

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

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

FIG. 4 is a vertical sectional side view of a nozzle member constituting the corrugated winding forming apparatus.

FIG. 5 is an explanatory diagram of a movement locus of the nozzle member.

FIG. 6 is a perspective view illustrating a configuration of a waveform winding forming apparatus according to a second embodiment.

FIG. 7 is a schematic configuration diagram of the waveform winding forming apparatus.

FIG. 8 is a vertical sectional side view of another nozzle member for simultaneously supplying four enamel wires.

FIG. 9 is a partial front view of the another nozzle member.

FIG. 10 is a partial front view of still another nozzle member for simultaneously supplying eight enamel wires.

FIG. 11 is a partial longitudinal side view of the further another nozzle member.

FIG. 12 is a partial front view of still another nozzle member for simultaneously supplying 15 enamel wires.

FIG. 13 is a partially longitudinal side view of the still another nozzle member.

FIG. 14 is a perspective view illustrating a conventional winding forming method.

[Explanation of symbols]

10 ... Motors 12a to 12c
... winding 14 ... stator core 20 ... slot 28a, 28b ... curved part 30 ... corrugated winding forming device 32 ... rotary table 34, 36 ... pillar 38 ... winding jig 40 ... lead wire supply part 42 ... enamel wire 44 ... guide jig Tool 46: Moving mechanism 50: Rotating motor 62: Tensioner 68: Horizontal arm 70: Nozzle member 82, 86, 9
0: motors 94, 102 ... controller 104: control panel 110: waveform winding forming device 112: guide jig 114: moving mechanism 122, 13
0, 138: motor 150, 160, 170: nozzle member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H02K 15/04 H02K 15/06 H02K 3/14 H02K 3/28

Claims (2)

(57) [Claims] 1. A corrugated winding forming apparatus for forming a coil inserted into a slot of an iron core in a corrugated shape in advance corresponding to the slot, comprising: A winding jig provided with a first strut corresponding to the portion and a second strut corresponding to the outer curved portion of the wavy shape; and guiding the conductive wire supplied from the conductive wire supply unit to the winding jig. A jig for moving the winding jig and the guide jig relative to each other in the axial direction and the radial direction of the rotary table, and moving the conductive wire guided by the guide jig to the first support. Inner peripheral surface and the second
A moving mechanism for alternately winding around the outer peripheral surface of the column to form a waveform winding, and a moving mechanism for forming the waveform winding. 2. A corrugated winding forming apparatus according to claim 1, wherein said guide jig is provided with a rotatable nozzle member while simultaneously guiding a plurality of conducting wires. .