JP2004064820A - Winding method and winder for multipole armature - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding method and a winder for a multipole armature which equalize the resistance values of each layer. <P>SOLUTION: The winder 1 for a stator(multipole armature) forms a plurality of layers different in length of wire rods 5 by winding a plurality of wire rods 5, in a bundle on a core 8 where slots 6 are open between each tooth 9 and the next. The total values of the diameters of the wire rods 5 in each layer are varied so as to reduce the difference of resistance values corresponding to the length of the wire rods 5 in each layer. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a winding method and a winding apparatus for a multipole armature.
[0002]
[Prior art]
Conventionally, there has been a winding method in which a plurality of wires are wound around each tooth of a multipolar armature such as a stator. By winding a plurality of thin wires, it is possible to suppress an increase in resistance due to the skin effect that an alternating current tends to flow near the surface of the conductor as compared to winding a single thick wire. The performance of the motor can be improved by increasing the space factor (density).
[0003]
This winding method has already been filed by the present applicant as Japanese Patent Application No. 2001-325903.
[0004]
[Problems to be solved by the invention]
However, in a multi-pole armature comprising a plurality of layers in which a plurality of wires are wound around each tooth and having a plurality of layers having different lengths of the wires, layers wound inward in the radial direction; There is a problem in that the length of the winding is different from the layer wound outward in the radial direction, the resistance value is different, and the characteristics of the motor are affected.
[0005]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a winding method and a winding device for a multipole armature that make the resistance values of the respective layers uniform.
[0006]
[Means for Solving the Problems]
A first invention is a winding of a multi-pole armature in which a plurality of wires are wound around a core having a slot opened between teeth and a plurality of layers having different lengths of the wires are formed. Applies to line method.
[0007]
And the total value of the wire diameter of the wire of each layer was made to differ so that the difference of the resistance value according to the length of the wire of each layer might be reduced.
[0008]
A second invention is a winding of a multi-pole armature in which a plurality of wires are wound around a core having a slot opened between teeth, and a plurality of layers having different lengths of the wires are formed. Applies to line equipment.
[0009]
And it was set as the structure which made it the structure which made the total value of the wire diameter of the wire of each layer differ so that the difference of the resistance value according to the length of the wire of each layer might be reduced.
[0010]
According to a third invention, in the second invention, the nozzle comprises a nozzle for feeding out a plurality of wires, a nozzle moving mechanism for moving the nozzle, and a chuck mechanism for supporting the nozzle in a replaceable manner on the nozzle moving mechanism. It was set as the structure exchanged with the wire supplied to this.
[0011]
4th invention is the structure which changes the number of the wire materials which drive the roller separately and drive this roller separately in the 2nd invention which has a nozzle which pays out a plurality of wire rods, and a roller which sends each wire rod to a nozzle It was characterized by that.
[0012]
Operation and effect of the invention
According to the first and second inventions, since the bundle of wire rods of each layer is arranged in the radial direction in the slot, the lengths of the windings are different between the layers. By making the total value different, the resistance value of each layer can be made uniform, and for example, the performance of the motor can be improved.
[0013]
According to the third aspect of the present invention, the total value of the wire diameters of the wires of each layer can be made different by exchanging the nozzle together with the wire supplied to the nozzle.
[0014]
According to the fourth aspect of the invention, the total value of the wire diameters of the wires of each layer can be made different by driving the rollers individually and changing the number of wires sent to the nozzle.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0016]
In FIG. 1, reference numeral 1 denotes a winding device that automatically performs winding on a core 8 constituting a stator (multi-pole armature) of a three-phase AC motor.
[0017]
The core 8 constitutes a stator of an inner rotor type motor in which a plurality of (for example, 24) teeth (magnetic poles) 9 project inside the annular yoke, and the same number of slots 6 open inwardly between the teeth 9. To do. Each tooth 9 is divided into a yoke, and winding is performed in a state where the teeth 9 are held by a winding jig 3 via a U-shaped fixture 4 as shown in FIG. At the time of winding, the teeth 9 are arranged at a predetermined interval in the circumferential direction, and the slots 6 between the teeth 9 are open toward the outside of the core 8. Then, after the winding of each tooth 9 is completed, an annular yoke is fitted to the outer periphery of each tooth 9.
[0018]
Hereinafter, the configuration of the winding device 1 will be described. Here, it is assumed that three axes X, Y, and Z that are orthogonal to each other are set, the X axis extends in a substantially horizontal front-rear direction, the Y axis extends in a substantially horizontal lateral direction, and the Z axis extends in a substantially vertical direction.
[0019]
The winding device 1 includes an index mechanism 11 that rotates the core 8 about its central axis with respect to the gantry 2, three nozzles 10 that respectively feed out the U-phase, V-phase, and W-phase wires 5, and each nozzle Three nozzle moving mechanisms 35 that move the three-dimensional direction 10 and a pushing device 16 that pushes the wire 5 wound around the teeth 9 into the slots 6. 9 is wound.
[0020]
The index mechanism 11 includes an index base 12 that is rotatably supported around the Z axis with respect to the gantry 2 and a servo motor (not shown) that rotationally drives the index base 12. The winding jig 3 is pressed and fixed on the index base 12 by the drive cylinder 29 via the pressing member 28, and rotates coaxially with the index base 12.
[0021]
The nozzle moving mechanism 35 includes a vertical moving table 37 that moves in the X axis direction by the servo motor 36 with respect to the gantry 2, and a horizontal moving table 34 that moves in the Y axis direction by the servo motor 33 with respect to the vertical moving table 37. A base 39 that moves in the Z-axis direction by a servo motor 38 with respect to the lateral movement table 34 is provided, and the nozzle 10 is attached to the base 39 via a chuck mechanism 40.
[0022]
As shown in FIG. 2, the nozzle 10 is formed in a plate shape through which the slot 6 between the teeth 9 is inserted, and a plurality of guide holes 14 through which each wire 5 is inserted are formed. Each guide hole 14 is opened in a line at a predetermined interval. Since the plurality of wires 5 are fed out from the nozzle 10 at a predetermined interval, the wires 5 are drawn out smoothly without contacting each other, and are prevented from being entangled by friction.
[0023]
In addition, the nozzle 10 may be divided into two members, and a groove constituting each guide hole 14 may be formed on the joint surface of each member.
[0024]
A plurality of wire rods 5 are supplied to each nozzle 10 from a wire rod feeder (not shown), and each nozzle 10 moves around the teeth 9 while feeding out the plurality of wire rods 5 so that the plurality of wire rods 5 are bundled together. It is wound around the teeth 9.
[0025]
In this way, by winding a plurality of thin wires 5, it is possible to suppress an increase in resistance due to a skin effect in which an alternating current tends to flow near the surface of the conductor, compared to winding a single thick wire. At the same time, the space factor (density) of the winding is increased to improve the performance of the motor.
[0026]
The nozzle moving mechanism 35 moves each nozzle 10 up and down through the slot 6 while feeding the wire 5, and the index mechanism 11 rotates the core 8 so that each nozzle 10 rotates around each tooth 9. Winding is performed on each tooth 9.
[0027]
In the present embodiment, the U-phase, V-phase, and W-phase wires 5 are wound around the core 8 in three layers, an inner layer, an intermediate layer, and an outer layer. The inner layer, the middle layer, and the outer layer of the wire 5 are wound around the core 8 one by one, and the inner layer, the middle layer, and the outer layer of the wire 5 are arranged in order from the radially inner side to the outer side in each slot 6.
[0028]
Each of the inner layer, the middle layer, and the outer layer of the wire 5 is wound in a wave shape so as to sew a plurality of teeth 9 and makes one round of the core 8. The inner layer, the middle layer, and the outer layer of the wire 5 may be wound around the core 8 over two or more rounds. Further, the inner layer, the middle layer, and the outer layer of the wire 5 may be wound around the core 8 while making a round around the plurality of teeth 9.
[0029]
The inner layer, the middle layer, and the outer layer of the wire 5 are bundled at both ends and drawn out to form lead terminals. The inner layer, middle layer, and outer layer wires 5 are connected in parallel through these lead terminals.
[0030]
By the way, each slot 6 has the inner layer, the middle layer, and the outer layer of the wire 5 arranged in the radial direction from the inner side to the outer side, so that the layer wound inward in the radial direction and the outer side in the radial direction are wound. The lengths of the windings differ from one layer to another, resulting in a difference in resistance value.
[0031]
The present invention copes with this, and the total value of the wire diameters of the inner layer, the middle layer, and the outer layer wire 5 is made different so as to reduce the difference in resistance value according to the length of the inner layer, middle layer, and outer layer wire 5. And
[0032]
In this embodiment, as shown in FIGS. 2A, 2B, and 2C, nozzles 10 for feeding out the inner layer, middle layer, and outer layer wire 5 are individually prepared. As shown in FIG. 2A, the nozzle 10 used for the inner layer winding is supplied with two wires 5 having a large wire diameter R1 and four wires 5 having a small wire diameter R2. As shown in FIG. 2B, three wires 5 having a large wire diameter R1 and three wires 5 having a small wire diameter R2 are supplied to the nozzle 10 used for the middle layer winding. As shown in FIG. 2C, four wires 5 having a large wire diameter R1 and two wires 5 having a small wire diameter R2 are supplied to the nozzle 10 used for the outer layer winding.
[0033]
The winding device 1 includes a stock table 21 on which a stand-by nozzle 10 is placed on a gantry 2, and a clamp 22 that locks the front end of the wire 5 extending from each nozzle 10 in front of the stock table 21.
[0034]
The nozzle moving mechanism 35 includes a chuck mechanism 40 that supports the nozzle 10 on the base 39 in a replaceable manner. The nozzle 10 attached to the base 39 during the winding of each layer is configured to be exchanged via the chuck mechanism 40.
[0035]
Next, an operation for winding the core 8 will be described.
[0036]
(1) Each nozzle 10 in the inner layer is attached to the nozzle moving mechanism 35 via each chuck mechanism 40 for each of the U phase, the V phase, and the W phase. The nozzle moving mechanism 15 moves each nozzle 10 while feeding a plurality of wires 5 from the respective guide holes 14, so that each wire 5 is bundled and wound around a predetermined binding rod (not shown). The core 8 is wound around in a wavy manner as if it is sewn, wound around another tie rod, and cut through a cutter (not shown). Thereafter, each nozzle 10 is removed from the nozzle moving mechanism 35 via each chuck mechanism 40 and placed on the stock table 21.
[0037]
(2) Similarly, after each nozzle 10 in the middle layer is attached to the nozzle moving mechanism 35 via each chuck mechanism 40, a plurality of wires 5 fed out from each nozzle 10 are bundled and wound around the core 8, Each nozzle 10 is removed from the nozzle moving mechanism 35 via each chuck mechanism 40 and placed on the stock table 21.
[0038]
(3) Similarly, after each nozzle 10 in the outer layer is attached to the nozzle moving mechanism 35 via each chuck mechanism 40, a plurality of wires 5 fed out from each nozzle 10 are bundled and wound around the core 8, Each nozzle 10 is removed from the nozzle moving mechanism 35 via each chuck mechanism 40 and placed on the stock table 21.
[0039]
Since it is configured as described above, the inner layer, the middle layer, and the outer layer of the wire 5 are wound side by side from the inner side to the outer side in the radial direction, and therefore the lengths of the windings are different between them. However, according to this, by making the total values of the wire diameters of the inner layer, middle layer, and outer layer wire 5 different from each other, the resistance values of the inner layer, middle layer, and outer layer are made uniform to improve the performance of the motor.
[0040]
As another embodiment, as shown in FIG. 3, the nozzle moving mechanism 35 includes a roller 50 that feeds each wire 5 to the nozzle 10. The rollers 50 are individually driven by a motor 51. By selectively operating the roller 50 and controlling the number of the wire 5 sent to the nozzle 10, the number of the wires 5 constituting the inner layer, the middle layer, and the outer layer is made different to equalize the respective resistance values.
[0041]
As shown in FIG. 4A, when the inner layer is wound, the two rollers 50 are stopped, the four rollers 50 are operated, and the four wires 5 are connected to the nozzles 10 via the rollers 50, respectively. To be supplied. As shown in FIG. 4B, when the intermediate layer is wound, one roller 50 is stopped, five rollers 50 are operated, and five wires 5 are connected to the nozzles 10 via the rollers 50. To be supplied. As shown in FIG. 4C, when the outer layer is wound, all the rollers 50 are operated, and the six wires 5 are supplied to the nozzles 10 through the respective rollers 50.
[0042]
Also in this case, the resistance values of the inner layer, the middle layer, and the outer layer are made different by changing the number of wires 5 constituting the inner layer, the middle layer, and the outer layer in accordance with the difference in winding length among the inner layer, the middle layer, and the outer layer. To improve the performance of the motor.
[0043]
By sending the wire 5 to the roller 50, even the thick wire 5 is smoothly supplied to the nozzle 10.
[0044]
The wire diameters of the respective wire rods 5 supplied to the nozzle 10 are all equal, but the wire rods 5 having different wire diameters are used, and the number of the wire rods 5 supplied to the nozzle 10 is changed to change the inner layer, the middle layer, and the outer layer These resistance values may be made uniform.
[0045]
Further, the present invention is not limited to the stator constituting the inner rotor type motor, but can be applied to the winding of the stator constituting the outer rotor type motor.
[0046]
The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.
[Brief description of the drawings]
FIG. 1 is a perspective view of a winding device showing an embodiment of the present invention.
FIG. 2 is a perspective view of a wire rod or the like supplied to the nozzle.
FIG. 3 is a perspective view of a winding device showing another embodiment.
FIG. 4 is a perspective view of wire rods, rollers and the like supplied to the nozzle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Winding apparatus 5 Wire 6 Slot 8 Core 9 Teeth 10 Nozzle 11 Index mechanism 21 Stock stand 35 Nozzle moving mechanism 40 Chuck mechanism 50 Roller 51 Motor

Claims (4)

In a winding method of a multi-pole armature in which a plurality of wires are wound around a core having a slot between each tooth and a plurality of layers having different lengths of the wires are formed.
A winding method for a multi-pole armature, characterized in that the total value of the wire diameters of the wire rods of each layer is made different so as to reduce the difference in resistance value according to the length of the wire rod of each layer. In a winding apparatus for a multi-pole armature, in which a plurality of wires are wound in a bundle around a core having a slot open between each tooth, and a plurality of layers having different lengths of the wires are formed.
A winding device for a multi-pole armature, characterized in that the total value of the wire diameters of the wires of each layer is made different so as to reduce the difference in resistance value according to the length of the wire of each layer. A nozzle that feeds a plurality of wires, a nozzle moving mechanism that moves the nozzle, and a chuck mechanism that supports the nozzle in a replaceable manner in the nozzle moving mechanism, and a configuration that replaces the nozzle together with the wire supplied to the nozzle The winding apparatus for a multipole armature according to claim 2, wherein The nozzle according to claim 2, further comprising: a nozzle that feeds a plurality of wire rods and a roller that feeds each wire rod to the nozzle, and the rollers are individually driven to change the number of wire rods fed to the nozzle. Multipole armature winding device.

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