JP2002186228A - Method of correcting balance of rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of correcting balance of a rotary electric machine which can adequately correct the balance of the rotary electric machine, resulting in a merit of low cost and that in the performance thereof without necessity of particular working processes and exclusive processing facilities. SOLUTION: In order to eliminate unbalance of an armature after the coiling is completed, the number of turns of coil is determined by calculation based on the data for unbalance of coil uniformly generated in a coiling method, and the measured data of unbalance of individual armature core and the balance is also corrected simultaneously in the ordinary coiling process. Accordingly, drop of efficiency of motor can be prevented through the structure that any particular working process and process facilities are no longer required, a part of the armature is not deleted and a correcting material is not attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for correcting the balance of a rotating armature in which a plurality of slots of an armature core are wound.

[0002]

2. Description of the Related Art As a method of correcting the balance (unbalance) of a rotating armature such as a motor rotor, a method of measuring a dynamic unbalance state of a rotating armature after winding (after completion) is performed. To correct the unbalance by attaching a correction material (so-called putty) (so-called plus balance correction method)
In addition, there is known a correction method (a so-called minus balance correction method) that corrects the unbalance by deleting a part of the iron core of the rotating armature after the winding is applied.

Here, in the balance correction method performed by attaching the correction material, the unbalance state of the rotating armature after the winding is applied is measured, and the unbalance position and the unbalance amount are determined based on the measurement result. The correction material is determined, and based on the result, a predetermined amount of the correction material is discharged to and adhered to the rotating armature. On the other hand, in the balance correcting method performed by removing a part of the iron core of the rotating armature, the unbalance state of the rotating armature after the winding is applied is similarly measured, and the unbalance position is determined based on the measurement result. And the unbalance amount is determined, and based on the result, the iron core at a predetermined location is deleted to correct the balance.

By the way, such a conventional correction method is as follows.
All of these have disadvantages such as requiring a special work process and dedicated processing equipment, causing an increase in cost, and disadvantageous in terms of motor efficiency.

[0005] That is, in the balance correction method performed by attaching the repair material, a processing step and equipment for attaching the repair material are required, and further, a repair that is not originally required as a rotating armature. Since the material is attached, an increase in weight due to the attached correction material impairs the performance (efficiency) of the motor.

On the other hand, the balance correction method performed by removing a part of the iron core of the rotating armature similarly requires a processing step and equipment for removing the part of the iron core. Since the configuration is such that a part of the iron core of the child is deleted, a gap (air gap) between the deleted part and the magnet is unnecessarily increased.
Similarly, the performance of the motor will be impaired. In addition, it is necessary to take measures to prevent scattering of chips and the like at the time of deletion and unnecessary adhesion to the rotating armature.

As described above, any of the conventional methods for correcting the balance of a rotating armature causes an increase in the number of working processes and dedicated processing equipment, resulting in an increase in cost and a disadvantage in the performance (efficiency) of the motor. Therefore, there are drawbacks such as the following, and a countermeasure for this has been eagerly desired.

[0008]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention makes it possible to optimally correct the balance of a rotating armature without requiring any special working process or special processing equipment.
An object of the present invention is to provide a method for correcting the balance of a rotating armature which is low in cost and advantageous in performance.

[0009]

According to a first aspect of the present invention, there is provided a method for correcting the balance of a rotating armature, wherein a plurality of slots of an armature core are wound with windings. The winding unbalance amount and the winding unbalance position uniformly generated by a predetermined application of the winding are set in advance as data, and the unbalance amounts and the individual armature cores before the winding is applied. The unbalance position is individually measured, the measured data of the unbalance amount and the unbalance position of the armature core is stored as ID information in the armature core transport pallet, and the ID information stored in the transport pallet is stored. The winding is performed based on the ID information read by the winding machine for applying the winding, the read ID information, and the data of the preset winding unbalance amount and the winding unbalance position. After The number of windings applied to the plurality of slots is individually calculated and determined so as to cancel the unbalance of the individual rotating armatures, and the windings are applied to each slot according to the determined number of windings. The imbalance of the rotating armature is individually corrected.

[0010] The method for correcting the balance of a rotating armature according to the first aspect is applied to a rotating armature in which winding is applied to a plurality of slots of an armature core.

In this case, in a rotating armature in which windings are applied to a plurality of slots of the armature core, dynamic imbalance of the windings occurs uniformly depending on a predetermined winding method. . A winding unbalance amount and a winding unbalance position uniformly generated by a predetermined application method of the winding are preset as data.

[0012] Here, the unbalance amount and the unbalance position of the armature core before the winding is applied are individually measured. Further, the measured data of the unbalance amount and the unbalance position of the armature core are stored as ID information of each armature core on a pallet for transporting the armature core.

Next, the ID information of each armature core stored in the transport pallet is read by a winding machine for winding the armature core. Further, based on the read ID information (measured data of the measured unbalance amount and unbalance position of each armature core) and data of the preset winding unbalance amount and winding unbalance position,
The number of windings applied to the plurality of slots is calculated and determined individually so that the imbalance of the rotating armature after the application of the windings is canceled. Further, winding is applied to each slot according to the determined number of windings.

Therefore, the imbalance of the rotating armature (armature core) before the winding is applied is absorbed by the application of the winding, and furthermore, the predetermined application of the winding ( The unbalance that occurs uniformly due to the winding itself will be absorbed by applying the winding, and the unbalance will be removed after the winding is applied (the balance will be corrected) The rotating armature is completed.

Further, the measured individual unbalance amount and the unbalance position of the armature core before the winding is applied are recorded on a pallet for conveying the armature core as ID information of the individual armature core. Since the configuration is such that the ID information of the individual armature cores stored and stored in the transport pallet is read by the winding machine and the arithmetic processing is performed, it is possible to reliably recognize the unbalance state of the individual armature cores. This makes it possible to set up a production line for continuously winding a large number of armature cores, thereby enabling mass production at low cost.

As described above, according to the balance correcting method according to the present invention, it is possible to perform winding (normal winding processing) without requiring a repairing material or a special work process or a dedicated processing facility. In the process, the balance can be corrected, and the processing steps for the balance correction can be largely omitted, resulting in low cost. Furthermore, since it is not a configuration to attach a correction material to the rotating armature or delete a part of it,
The original efficiency of the rotating armature is not hindered, which is advantageous in terms of performance.

[0017]

5A and 5B show an armature core 12 to which the balance correcting method according to the present invention is applied, and FIGS. 6A and 6B. An armature 10 produced by applying this balance correction method is shown.

In the armature core 12, an iron core 16 is fixed to a shaft 14. The iron core 16 is provided with a plurality of (five in this embodiment) slots 18 at predetermined intervals. A commutator 20 is attached to one end of the shaft 14 in the axial direction. The armature 10 is formed by applying a winding 22 to the slot 18 and the commutator 20 of the armature core 12 in a predetermined winding manner (for example, lap winding).

FIG. 1 is a block diagram showing the overall configuration of the balance correcting method according to the present invention.
A procedure for correcting the balance (dynamic imbalance) of the armature 10 configured as described above will be described with reference to FIG.

First, in the armature 10 in which the windings 22 are applied to the plurality of slots 18 of the armature core 12 as described above, the number of slots 18 (for example, an odd number) and the number of windings 2
2 according to a predetermined application method (for example, lap winding) in FIG.
As shown by a broken line X in (B), a dynamic imbalance of the winding 22 occurs uniformly. In step 100, this winding 2
The winding unbalance amount (W ₁ ) and the winding unbalance position (n-th slot) uniformly generated by the predetermined application method 2 are set as data in advance. Further, the weight per turn of the winding 22 is also set as data.

In step 102, the balance (dynamic unbalance state) of the armature core 12 before the winding 22 is applied is individually measured. Further, in step 104, the solid line Y shown in FIG. The unbalance amount (W ₂ ) and the unbalance position (for example, a position rotated by θ degrees from a predetermined photo mark position attached to the armature core 12) are specified as shown by. The measurement of the balance of the armature core 12 in the steps 102 and 104 can be performed by a commonly used rotating body balance measuring device 50 (shown in FIG. 4).

Here, the above-mentioned dynamic imbalance of the armature core 12 is often caused by the fact that the iron core 16 is displaced from the shaft 14 (in a state where it does not become the same axis core) and is fixed. . In this case, as shown in FIG.
In _No. 6, the unbalanced weight is large (acting on the plus side) and the air gap G1 is small. On the other hand, in the iron core 16 side (the side away from the magnet 24) to approach the shaft 14, (acts on the minus side) unbalanced weight is small and the air gap G ₂ increases.

Further, the armature core 12 whose individual unbalance amount (W ₂ ) and the unbalance position are specified in step 104.
3A and FIG.
As shown in (B), the armature core 12 is placed and held on a pallet 52 for transporting the armature core 12, and the data of the specified unbalance amount (W ₂ ) and the unbalance position of the specified armature core 12 are displayed. Are recorded in the storage portion 54 of the pallet 52 as ID information of each armature core 12. As means for recording (storing) this ID information on the pallet 52, for example, a so-called "barcode" or the like can be used.

Next, in step 108, the individual armature cores 12 are transported by the pallets 52 as shown in FIG. 4, and in step 110, the armature cores 12 transported by the pallets 52 It is chucked by a winding machine 56 for application and is held at a predetermined position. As shown in FIG. 4, by arranging and using a plurality of winding machines 56 on the same line, a large number of armature cores 12 can be continuously circulated to increase the production efficiency (operating rate). .

Further, in step 112, the winding machine 56
ID information of the armature core 12 chucked to the armature core 12 (measured and stored in the transport pallet 52).
(Data on the unbalance amount (W ₂ ) and the unbalance position) is read from the storage unit 54 of the transport pallet 52 in the winding machine 56.

Next, in step 114, the read ID information (the data of the measured unbalance amount (W ₂ ) and the unbalance position) is read and a preset winding unbalance amount (W
₁ ) Based on the data of the winding unbalance position (the n-th slot) and the weight data per turn of the winding 22, the unbalance of the armature 10 after the winding 22 is applied is canceled. In other words, as shown in FIG. 2C, the number of windings applied to each slot 18 is increased so that the winding 22 is wound more so that the weight of W ₁ -W ₂ is given to the n-th slot. It is calculated and determined.

For example, the shaft 14 as shown in FIG.
On the other hand, in the armature core 12 in which the iron core 16 is displaced and fixed to be in an unbalanced state, the slot 18 of the iron core 16 on the side approaching the shaft 14 has a large amount of (weight corresponding to W ₁ -W ₂ ). ) The number of windings is determined so that the windings 22 are applied.

Thereafter, in step 116, windings 22 are applied to each slot 18 according to the determined number of windings. The armature core 1 in the step 116
The winding operation of No. 2 can be performed by a commonly used armature winding device (winding machine 56).

Therefore, at this point, the winding 2
The dynamic imbalance of the armature core 12 before the application of the windings 2 is absorbed by the application of the windings 22, and furthermore, by the predetermined application of the windings 22 (the windings 22 themselves). The unbalance that occurs temporarily is also absorbed by the application of the winding 22, and the unbalance is removed after the application of the winding 22 (the state where the balance is corrected). The armature 10 is completed.

After the windings 22 have been applied to the armature 10,
In step 118, a measurement for confirming the balance is finally performed as necessary, but the confirmation measurement is not necessarily required.

As described above, according to the balance correcting method according to the present embodiment, the winding 22 is provided without the need for a repairing material, a special work process, a dedicated processing facility, and the like (an ordinary method). The balance can be corrected (in the winding processing step), and the processing step for the balance correction can be largely omitted, resulting in low cost.

In addition, since the correction material is not attached to the armature 10 or a part thereof is not removed, the original efficiency of the armature 10 is not hindered, and the performance is advantageous. For example, in the armature core 12 in which the iron core 16 is displaced and fixed to the shaft 14 and becomes unbalanced, the slot 1 of the iron core 16 on the side approaching the shaft 14 is used.
8 is provided with a large number of windings 22 (having a weight corresponding to W ₁ -W ₂ ), so that a decrease in electromagnetic force due to an increase in the air gap G ₂ at this portion can be compensated for by increasing the number of windings. In addition, it is possible to prevent a decrease in motor efficiency.

Further, the measured individual unbalance amount (W ₂ ) and the unbalance position of the armature core 12 before the winding 22 is applied are determined as ID information of the individual armature core 12 as the ID information. 12 is stored in the pallet 52 for transporting the armature 12, and the ID information of the individual armature cores 12 stored in the pallet 52 for transport is read and calculated by the winding machine 56. Core 12
Can be reliably recognized, a production line for continuously applying the windings 22 to a large number of armature cores 12 can be set, and mass production can be performed at low cost.

As described above, according to the balance correcting method according to the present embodiment, the winding 22 is applied without using a repairing material, a special work process, a special processing facility, and the like. The balance can be corrected (in the winding processing step), and the processing step for the balance correction can be largely omitted, resulting in low cost. Furthermore, since the modification material is not attached to the armature core 12 (armature 10) or a part thereof is not removed, the original efficiency of the armature 10 is not hindered, and the performance is advantageous. .

[Brief description of the drawings]

FIG. 1 is a flowchart showing an overall configuration of a balance correction method according to the present invention.

FIG. 2 is a diagram showing a relationship between an unbalance position and an unbalance amount in the balance correcting method according to the present invention.

FIG. 3 shows a schematic configuration of an armature core and a transfer pallet to which a balance correction method according to the present invention is applied,
(A) is a plan view and (B) is a front view.

FIG. 4 is a schematic process diagram of a production line configured by applying the balance correcting method according to the present invention.

5A and 5B show an armature core to which the balance correcting method according to the present invention is applied, wherein FIG. 5A is a front view and FIG. 5B is a side view.

6A and 6B show an armature manufactured by applying the balance correcting method according to the present invention, wherein FIG. 6A is a front view and FIG.
Is a side view.

FIG. 7 is a side view of an armature core to which the balance correcting method according to the present invention is applied.

[Description of Signs] 10 armature 12 armature core 14 shaft 16 iron core 18 slot 22 winding

Claims (1)

[Claims] 1. A method for correcting the balance of a rotating armature in which windings are applied to a plurality of slots of an armature core, wherein a winding unbalance amount uniformly generated by a predetermined application of the windings. And the winding unbalance position is set in advance as data, the unbalance amount and the unbalance position of each armature core before the winding is applied are individually measured, and the measured armature core unbalance amount and unbalance are measured. The position data is stored as ID information on the armature core transport pallet, and the ID information stored on the transport pallet is read by a winding machine for applying the winding, and the read ID information and Based on the preset winding unbalance amount and winding unbalance position data, based on the plurality of slots so that the unbalance of the individual rotating armatures after the winding is applied is canceled. The number of windings to be calculated is determined individually, and winding is applied to each slot in accordance with the determined number of windings to individually correct the imbalance of the rotating armature. How to correct the child's balance.