JP2017201857A - Method of correcting balance of rotor of rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for correcting balance of a rotor of a rotary electric machine capable of reducing a thickness of an end face plate without generating a chip, requiring no cutting work, and capable of easily correcting the balance of the rotor.SOLUTION: A method for correcting a balance of a rotor 10 of a rotary electric machine includes: a balance measuring step S2 for measuring a balance state of a rotor core 14 journaled on a rotor shaft 12; an end face plate selection step S4 for selecting an end face plate 20 suitable for eliminating a detected unbalanced state from a plurality of types of end face plates 20 having different imbalance states in accordance with the unbalanced state detected by the balance measuring step S2; and an end face plate setting step S5 of inserting the selected end face plate 20 into the rotor shaft 12 and arranging it on an axial end face of the rotor core 14.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rotor balance correction method for a rotating electrical machine that corrects the unbalanced state of the rotor of the rotating electrical machine within an allowable range.

  In a rotating electrical machine used for a hybrid vehicle or the like, an unbalance (unbalanced state of a rotating object) may occur due to the influence of deviation such as material non-uniformity or processing tolerance. This imbalance becomes a load, and when rotating, it becomes a centrifugal force in the circumferential direction of the rotor and affects the rotation. Therefore, the load increases in accordance with the rotational speed of the rotor, causing a radial displacement. For this reason, after assembling the rotor, balance confirmation is performed in order to check whether the rotor is normal.

  As one of such balance correction methods for a rotor of a rotating electrical machine, Patent Document 1 proposes a method of cutting an end face plate.

JP 2012-161226 A

  However, in the method of correcting the balance of the rotor of the rotating electrical machine in Patent Document 1, since cutting is necessary and a chip is generated by cutting, a deburring process, a chip removing process, periodic chip cleaning of equipment, etc. Was necessary. Moreover, the subject that the cutting cross-sectional thickness of an end surface board is required occurred.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to reduce the thickness of the end face plate and to easily correct the balance of the rotor while cutting is not required and a facet is not generated. An object of the present invention is to provide a method for correcting the balance of a rotor of a rotating electrical machine.

In order to achieve the above object, the invention according to claim 1
A rotating shaft (for example, a rotor shaft 12 in an embodiment described later), a rotor core supported by the rotating shaft (for example, a rotor core 14 in an embodiment described later), and at least one axial end surface of the rotor core. An end plate (for example, an end plate 20 in an embodiment described later), and a balance correction method for a rotor of a rotating electrical machine (e.g., a rotor 10 in an embodiment described later),
A balance measurement step (for example, a balance measurement step (S2) in an embodiment described later) for measuring a balance state of the rotor core supported by the rotation shaft;
In accordance with the unbalance state detected by the balance measurement step, an end face plate selection step (selecting an end face plate suitable for canceling the detected unbalance state from a plurality of types of end face plates having different unbalance states) For example, an end face plate selection step (S4) in an embodiment described later,
An end face plate placement step (for example, an end face plate setting step (S5) in an embodiment described later) that inserts the selected end face plate through the rotating shaft and places the end face plate on the axial end face of the rotor core.

Moreover, in addition to the structure of Claim 1, the invention of Claim 2 is
In the balance measurement step, an unbalance amount of the rotor core supported by the rotating shaft is detected,
The plurality of types of end face plates are set so that the unbalance amount is different,
In the end face plate selection step, it is suitable for eliminating the detected unbalanced state from the plurality of types of the end face plates based on the unbalance amount of the rotor core and the unbalance amounts of the plurality of types of end face plates. Select the end plate.

Further, the invention of claim 3 is in addition to the structure of claim 1 or 2,
In the balance measuring step, an unbalanced position of the rotor core supported by the rotating shaft is detected,
The plurality of types of end face plates have an unbalance at a predetermined position,
In the end face plate arrangement step, an end face plate suitable for canceling the detected unbalanced state from a plurality of types of the end face plates based on the unbalance position of the rotor core and a predetermined position of the selected end face plate. Is arranged on the axial end face of the rotor core.

Moreover, in addition to the structure of any one of Claims 1-3, invention of Claim 4 adds to the structure of any one of Claims 1-3,
Information (for example, marking 24 in an embodiment described later) serving as a reference for the unbalanced state is displayed on each of the plurality of types of end face plates.

Moreover, in addition to the structure of any one of Claims 1-4, the invention of Claim 5 is
The unbalanced state of the plurality of types of end face plates is composed of recesses (for example, circular grooves 22 and linear grooves 23 in the embodiments described later) formed on the surfaces of the end face plates.

Moreover, in addition to the structure of any one of Claims 1-5, the invention of Claim 6 is
In the plurality of types of end face plates, a plurality of recesses (for example, fine adjustment recesses 26 in the embodiments described later) are formed in the periphery of the rotation shaft on the surface opposite to the surface facing the rotor core.
The balance correction method includes, after the end face plate selection step, a balance remeasurement step (for example, a balance remeasurement step (S16) in an embodiment described later) for remeasurement of the balance state of the rotor core on which the end face plate is disposed,
A weight placement step (for example, weight placement in an embodiment described later) that selects a weight according to the unbalanced state detected by the balance remeasurement step and places the selected weight in any of the recesses of the end face plate Step (S17)),
A collar placement step (for example, a color press-fitting step (S18) in an embodiment described later) that inserts a collar through the rotation shaft and closes the concave portion of the end face plate on which the weight is placed.

The invention of claim 7
A rotating shaft (for example, a rotor shaft 12 in an embodiment described later), a rotor core supported by the rotating shaft (for example, a rotor core 14 in an embodiment described later), and at least one axial end surface of the rotor core. An end plate (for example, an end plate 20 in an embodiment described later), and a balance correction method for a rotor of a rotating electrical machine,
In the end face plate, a plurality of recesses (for example, fine adjustment recesses 26 in the embodiments described later) are formed in the periphery of the rotation shaft on the surface opposite to the surface facing the rotor core,
The balance correction method is:
A balance measurement step for measuring the balance state of the rotor core supported by the rotation shaft (for example, a balance re-measurement step (S16) in an embodiment described later);
A weight arrangement that selects a weight (for example, a balance weight 28 in an embodiment described later) according to the unbalanced state detected by the balance measurement step, and places the selected weight in any one of the recesses of the end plate. A process (for example, a weight arrangement process (S17) in an embodiment described later),
A collar placement step (for example, a color press-fitting step (S18) in an embodiment described later) that inserts a collar through the rotation shaft and closes the concave portion of the end face plate on which the weight is placed.

  According to the first aspect of the present invention, there is provided an end face plate suitable for eliminating the unbalanced state detected from a plurality of types of end face plates having different unbalanced states in accordance with the unbalanced state detected by the balance measuring step. Since it is selected and arranged on the end face in the axial direction of the rotor core, the conventional cutting process is unnecessary, and the facet is not generated. Moreover, since the cutting cross-sectional thickness of the end face plate is not required as in the prior art, the end face plate can be made thinner.

  According to the invention of claim 2, the plurality of types of end face plates are set so that the unbalance amounts are different, and a plurality of types of end face plates are selected based on the unbalance amount of the rotor core and the unbalance amounts of the plurality of types of end face plates. By selecting an end face plate suitable for canceling the unbalanced state detected from the end face plate, the balance of the rotor can be easily corrected.

  According to the invention of claim 3, in the balance measurement step, the unbalance position of the rotor core supported by the rotating shaft is detected, and the plurality of types of end face plates have unbalance at predetermined positions, and the end face plate arranging step Then, based on the unbalance position of the rotor core and the predetermined position of the selected end face plate, an end face plate suitable for canceling the unbalanced state detected from a plurality of types of end face plates is disposed on the axial end face of the rotor core. . Therefore, since the balance can be corrected in accordance with the unbalance position, the accuracy can be improved and the balance of the rotor can be easily corrected.

  According to the fourth aspect of the present invention, since a plurality of types of end face plates display information that serves as a reference for the unbalanced state, the insertion direction of the end face plates can be easily understood and the accuracy can be improved. At the same time, the balance of the rotor can be easily corrected.

  According to the invention of claim 5, since the unbalanced state of the plurality of types of end face plates is constituted by the recesses formed on the surfaces of the respective end face plates, the end face plates can be easily manufactured.

  According to the invention of claim 6, the weight is selected according to the unbalance state detected by the balance re-measurement step, the selected weight is arranged in any one of the recesses of the end face plate, and the collar is inserted through the rotating shaft. Since the concave portion of the end face plate on which the weight is disposed is closed, the unbalance of the rotor core can be eliminated with high accuracy.

  According to the seventh aspect of the present invention, the weight is selected according to the unbalanced state detected by the balance measurement step, the selected weight is disposed in any one of the recesses of the end face plate, and the collar is inserted through the rotation shaft. Since the concave portion of the end face plate on which the weight is disposed is closed, the conventional cutting process is unnecessary and no face is generated. In addition, since the cut cross-sectional thickness of the end face plate is not required, the end face plate can be thinned.

It is process drawing which shows the balance correction method of the rotor of the rotary electric machine of 1st Embodiment of this invention. It is a perspective view which shows multiple types of end surface board of 1st Embodiment. It is a top view which shows the other example of multiple types of end surface board of 1st Embodiment. It is a flowchart which shows the specific implementation procedure of the balance correction method of the rotor of the rotary electric machine of 1st Embodiment. It is process drawing which shows the balance correction method of the rotor of the rotary electric machine of 2nd Embodiment of this invention. It is a perspective view which shows multiple types of end surface board of 2nd Embodiment.

  Embodiments of a rotor balance correction method for a rotating electrical machine according to the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

[First Embodiment]
FIG. 1 is a process diagram illustrating a rotor balance correction method for a rotating electrical machine according to a first embodiment of the present invention. As shown in FIG. 1, the balance correction method of the first embodiment includes a preset step (S1), a balance measurement step (S2), an unbalance detection step (S3), an end face plate selection step (S4), An end face plate setting step (S5), a balance remeasurement step (S6), and a color press-fitting step (S7) are provided.

  In the preset step (S1), the lower end face plate 2, the collar (not shown) and the rotor core 14 are assembled to the rotor shaft 12. After that, the magnet 16 is inserted into the magnet insertion hole 14a of the rotor core 14, and a fixing material (for example, resin) (not shown) is injected and fixed, and the rotor assembled except for the upper end plate 20 and the collar 30 is assembled. Once completed. Hereinafter, the rotor in which the upper end face plate 20 and the collar 30 are not assembled is referred to as a temporary assembly rotor 100. The lower end face plate 2 and the collar (not shown) are not necessarily required and can be omitted as appropriate.

  Subsequently, in the balance measurement step (S2), the balance state of the temporary assembly rotor 100 is measured by a balance measurement device (not shown). In the balance measurement step (S2), it is confirmed whether the unbalanced state is within an allowable range.

  After measuring the balance state of the temporary assembly rotor 100 in the balance measurement step (S2), in the unbalance detection step (S3), the unbalance amount and the unbalance position of the temporary assembly rotor 100 are detected and set to the unbalance position of the rotor core 14. The marking 14b is attached by any method such as punching.

  For example, as shown in FIGS. 2A to 2C, a circular groove 22 is formed at a predetermined position as the upper end plate 20. Depending on the size, depth, or number of the circular grooves 22, the unbalance is formed. Plural types of end face plates 20A to 20C set so as to have different states are prepared. The end face plate 20A in FIG. 2A has one circular groove 22, and the end face plate 20B in FIG. 2B has two circular grooves 22 arranged in the radial direction. The end plate 20C shows an example in which two circular grooves 22 are arranged side by side in the circumferential direction. The end face plate 20 (20A to 20C) is preliminarily provided with a marking 24 at an unbalanced position by an arbitrary method such as punching.

  FIG. 3 shows another example of the upper end plate 20. As the upper end plate 20, for example, as shown in FIGS. 3A to 3C, linear grooves 23 extending in the radial direction are formed at predetermined positions, and the width, depth, or number of the linear grooves 23 are formed. Depending on the situation, a plurality of types of end face plates 20A to 20C set so as to have different unbalanced states may be prepared. The end face plate 20A in FIG. 3 (a) has one thin linear groove 23, and the end face plate 20B in FIG. 3 (b) has two thin straight grooves 23 arranged in the circumferential direction. ) Of the end face plate 20 </ b> C shows an example in which one thick straight groove 23 is provided. Also in this modification, the end face plates 20 (20A to 20C) are preliminarily provided with markings 24 at an unbalanced position by an arbitrary method such as punching.

  Returning to FIG. 1, in the end face plate selection step (S4), an end face plate 20 suitable for canceling the unbalanced state detected in the unbalance detection step (S3) is selected. An end face plate 20 suitable for eliminating the unbalanced state detected in the unbalance detection step (S3) is selected from a plurality of types of end face plates 20 described with reference to FIGS.

  Subsequently, in the end face plate setting step (S5), the unbalanced position of the marking 14b of the rotor core 14 and the unbalanced position of the marking 24 of the selected end face plate 20 are matched, and the end face plate 20 is inserted into the rotor shaft 12 to insert the rotor. It arrange | positions at the axial direction end surface of the upper side of the shaft 12. FIG. In the balance remeasurement step (S6), the balance of the temporary assembly rotor 100 on which the end face plate 20 is arranged is remeasured.

  As a result of the re-measurement, when it is confirmed that the unbalanced state is within the allowable range and the balance is corrected, the collar 30 is press-fitted into the rotor shaft 12 from the upper side of the end face plate 20 in the color press-fitting step (S7). Then, the end face plate 20 is fixed. Thereby, the rotor 10 is completed.

Next, a specific execution procedure of the rotor balance correction method for the rotating electrical machine according to the first embodiment will be described with reference to the flowchart of FIG.
In step (S1-1), the lower end face plate 20 and the collar are press-fitted into the rotor shaft 12, and in step (S1-2), the rotor core 14 is press-fitted into the rotor shaft 12.
Subsequently, in step (S1-3), the magnet 16 is inserted into the rotor core 14, and in step (S1-4), the magnet 16 is inserted into the magnet insertion hole 14a of the rotor core 14, and a fixing material (not shown) is injected. To fix the temporary assembly rotor 100. The above steps (S1-1) to (S1-4) constitute a preset step (S1).

Next, in the balance measurement step (S2), the balance state of the temporary assembly rotor 100 is measured by a balance measurement device (not shown), and in step (S3-1), it is determined whether or not the unbalance state is within a correctable range. Is done.
If the unbalanced state is within the correctable range in step (S3-1), the unbalance amount and the unbalanced position are determined in step (S3-2) and punch punching is performed at the unbalanced position of the rotor core 14. The marking 14b is given by an arbitrary method. The above steps (S3-1) to (S3-2) constitute an unbalance detection step (S3).

  Subsequently, in the end face plate selection step (S4), an unbalanced upper end face plate 20 is selected that matches the unbalance amount, and in the end face plate setting step (S5), the unbalance position of the marking 14b of the rotor core 14 is selected. Then, in a state where the unbalanced positions of the markings 24 of the selected end face plate 20 are matched, the end face plate 20 is inserted into the rotor shaft 12 and disposed on the axial end face of the rotor shaft 12.

  In the balance re-measurement step (S6), the balance of the temporary assembly rotor 100 on which the end face plate 20 is arranged is re-measured, and the balance is corrected so that the unbalanced state is within the allowable range as a result of the re-measurement. If it is confirmed, in the collar press-fitting step (S7), the collar 30 that presses the upper end plate 20 into the rotor shaft 12 is press-fitted, and the upper end plate 20 is fixed to complete the rotor 10.

  Further, when the unbalanced state is out of the correctable range at step (S3-1) and as a result of the remeasurement of the balance of the temporary assembly rotor 100 at the balance remeasurement step (S6), the unbalanced state is within the allowable range. If the balance has not been corrected, the process proceeds to step (S8), the temporary assembly rotor 100 is removed from the production line, and the balance is corrected manually.

  As described above, according to the balance correction method for the rotor 10 of the rotating electrical machine according to the first embodiment, a plurality of types of unbalance states differ according to the unbalance state detected in the balance measurement step (S2). Since the end face plate 20 suitable for eliminating the unbalanced state detected from the end face plate 20 is selected and disposed on the end face in the axial direction of the rotor core 14, a conventional cutting process is unnecessary and a face is generated. There is nothing. Therefore, facilities such as sucking and blowing off the generated facet are not required, and maintenance of these facilities is also unnecessary. Moreover, the deburring process at the time of drilling the end surface board 20 becomes unnecessary.

  Moreover, since the cutting cross-sectional thickness of the end surface plate 20 like the conventional one is not required, the end surface plate 20 can be thinned.

  Further, the plurality of types of end face plates 20 are set so as to have different unbalance amounts, and based on the unbalance amount of the rotor core and the unbalance amounts of the plurality of types of end face plates 20, the plurality of types of end face plates 20 By selecting the end face plate 20 suitable for eliminating the detected unbalanced state, the balance of the rotor 10 can be easily corrected.

  Further, in the unbalance detection step (S3), the unbalance position of the rotor core 14 pivotally supported by the rotor shaft 12 is detected, and the plurality of types of end face plates 20 have unbalance at predetermined positions, and the end face plate setting step. In (S5), based on the unbalanced position of the marking 14b of the rotor core 14 and the unbalanced position of the marking 24 of the end face plate 20 selected in the end face plate selection step (S4), it was detected from a plurality of types of end face plates 20. An end face plate 20 suitable for eliminating the unbalanced state is disposed on the end face in the axial direction of the rotor core 14. Therefore, since the balance can be corrected in accordance with the unbalance position, the accuracy can be improved and the balance of the rotor 10 can be easily corrected.

  In addition, since the position information serving as a reference for the unbalanced state is displayed as the marking 24 on each of the plurality of types of end face plates 20, the insertion direction of the end face plate 20 can be easily understood, and the accuracy can be improved. Thus, the balance of the rotor 10 can be easily corrected.

  In addition, the unbalanced state of the plurality of types of end face plates 20 is composed of a circular groove 22 or a straight groove 23 that is a recess formed on the surface of each end face plate 20, so that the end face plate 20 can be easily manufactured. can do.

[Second Embodiment]
Next, a second embodiment of a rotor balance correction method for a rotating electrical machine according to the present invention will be described with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

  FIG. 5 is a process diagram illustrating a rotor balance correction method for a rotating electrical machine according to a second embodiment of the present invention. As shown in FIG. 5, the balance correction method of the first embodiment includes a preset step (S11), a balance measurement step (S12), an unbalance detection step (S13), an end face plate selection step (S14), An end face plate setting step (S15), a balance remeasurement step (S16), a weight arrangement step (S17), and a color press-fitting step (S18) are provided.

  The preset step (S11), balance measurement step (S12), and unbalance detection step (S13) are the same as the preset step (S1), balance measurement step (S2), and unbalance detection step (S3) of the first embodiment. Since there is, explanation is omitted.

  As the upper end face plate 20 of the second embodiment, for example, as shown in FIGS. 6A to 6C, a circular groove 22 is formed at a predetermined position, and the size and depth of the circular groove 22 or Plural kinds of end face plates 20D to 20F set so that the unbalanced state varies depending on the number are prepared. The end face plate 20D in FIG. 6 (a) has one circular groove 22, and the end face plate 20E in FIG. 6 (b) has two circular grooves 22 arranged in the radial direction. The end face plate 20F shows an example in which two circular grooves 22 are arranged side by side in the circumferential direction. The end face plate 20 (20D to 20F) is preliminarily provided with a marking 24 at an unbalanced position by an arbitrary method such as punching.

  Further, as shown in FIGS. 6A to 6C, the end face plate 20 is formed with four circular fine adjustment recesses 26 set at intervals of 90 degrees in the circumferential direction on the inner peripheral portion. Yes. A balance weight 28 can be inserted into the fine adjustment recess 26 according to the unbalanced state.

  In the end face plate selection step (S14), an end face plate 20 suitable for canceling the unbalanced state detected in the unbalance detection step (S13) is selected. An end face plate 20 suitable for canceling the unbalanced state detected in the unbalance detection step (S13) is selected from the plural kinds of end face plates 20 as described in FIG.

  Subsequently, in the end face plate setting step (S15), the unbalanced position of the marking 14b of the rotor core 14 and the unbalanced position of the marking 24 of the selected end face plate 20 are matched, and the end face plate 20 is inserted into the rotor shaft 12 to insert the rotor. It arrange | positions at the axial direction end surface of the upper side of the shaft 12. FIG. In the balance remeasurement step (S16), the balance of the temporary assembly rotor 100 on which the end face plate 20 is arranged is remeasured.

  If fine balance adjustment is necessary as a result of the remeasurement, the unbalanced state detected by the balance remeasurement step (S16) is applied to the predetermined fine adjustment recess 26 of the end face plate 20 in the weight placement step (S17). Accordingly, a balance weight 28 having a predetermined size and number is selected, and the selected balance weight 28 is inserted into a fine adjustment recess 26 suitable for canceling the unbalanced state, thereby finely adjusting the balance of the rotor core 14. .

  As a result of the re-measurement, when it is confirmed that the unbalanced state is within the allowable range and the balance is corrected, the collar 30 is press-fitted into the rotor shaft 12 from the upper side of the end face plate 20 in the color press-fitting step (S18). Then, the end face plate 20 is fixed. Thereby, the rotor 10 is completed.

  As described above, according to the balance correcting method for the rotor 10 of the rotating electrical machine according to the second embodiment, in addition to the balance correcting method for the rotor 10 of the rotating electrical machine according to the first embodiment, the balance is adjusted by the balance weight 28. It has been tweaked and corrected. Therefore, it becomes possible to correct the balance of the rotor 10 with higher accuracy while eliminating the need for cutting. Further, since the balance weight 28 is pressed by the collar 30, it does not come off even when the rotor 10 rotates at a high speed, and a special fixing member for fixing the balance weight 28 can be omitted.

  Note that, according to the rotor balance correction method for a rotating electrical machine according to the second embodiment, in addition to the balance correction method for the rotor of a rotating electrical machine according to the first embodiment, the balance is finely adjusted by the balance weight 28 for correction. However, the balance may be corrected by performing only the balance correction by the balance weight 28 without performing the balance correction method for the rotor of the rotating electrical machine according to the first embodiment.

  In addition, this invention is not limited to each embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. For example, in the above-described embodiment, an example of a rotating electrical machine having the magnet 16 is shown, but the present invention can also be applied to a rotating electrical machine having no magnet.

DESCRIPTION OF SYMBOLS 10 Rotor 12 Rotating shaft 14 Rotor core 20 End face plate 22 Recessed part 23 Linear groove 24 Marking 26 Recessed part (fine adjustment recessed part 26)
28 Weight 30 Color S2 Balance measurement step S4 End plate selection step S5 End plate setting step (End plate arrangement step)
S16 Balance re-measurement step S17 Weight placement step S18 Color press-fitting step (color placement step)

Claims (7)

A balance correction method for a rotor of a rotating electrical machine comprising: a rotating shaft; a rotor core supported by the rotating shaft; and an end face plate disposed on at least one axial end face of the rotor core,
A balance measuring step of measuring a balance state of the rotor core supported by the rotating shaft;
An end face plate selecting step for selecting an end face plate suitable for canceling the detected unbalance state from a plurality of types of end face plates having different unbalance states according to the unbalance state detected by the balance measurement step; ,
A rotor balance correction method for a rotating electrical machine, comprising: an end face plate arrangement step of inserting the selected end face plate through the rotation shaft and disposing the end face plate on the axial end face of the rotor core. A method for correcting a balance of a rotor of a rotating electrical machine according to claim 1,
In the balance measurement step, an unbalance amount of the rotor core supported by the rotating shaft is detected,
The plurality of types of end face plates are set so that the unbalance amount is different,
In the end face plate selection step, it is suitable for eliminating the detected unbalanced state from the plurality of types of the end face plates based on the unbalance amount of the rotor core and the unbalance amounts of the plurality of types of end face plates. A method for correcting the balance of a rotor of a rotating electrical machine, wherein an end face plate is selected. A method of correcting a balance of a rotor of a rotating electrical machine according to claim 1 or 2,
In the balance measuring step, an unbalanced position of the rotor core supported by the rotating shaft is detected,
The plurality of types of end face plates have an unbalance at a predetermined position,
In the end face plate arrangement step, an end face plate suitable for canceling the detected unbalanced state from a plurality of types of the end face plates based on the unbalance position of the rotor core and a predetermined position of the selected end face plate. Is disposed on the end face in the axial direction of the rotor core. It is the balance correction method of the rotor of the rotary electric machine of any one of Claims 1-3,
A method of correcting a balance of a rotor of a rotating electrical machine, wherein information serving as a reference for an unbalanced state is displayed on each of the plurality of types of end face plates. It is the balance correction method of the rotor of the rotary electric machine of any one of Claims 1-4,
A method of correcting a balance of a rotor of a rotating electrical machine, wherein the unbalanced state of the plurality of types of end face plates is constituted by a recess formed on the surface of each of the end face plates. It is the rotor balance correction method of the rotary electric machine of any one of Claims 1-5,
In the plurality of types of end face plates, a plurality of recesses are formed in the periphery of the rotation shaft on the surface opposite to the surface facing the rotor core,
In the balance correction method, after the end face plate selection step, a balance remeasurement step of re-measuring the balance state of the rotor core on which the end face plate is disposed, and
Selecting a weight according to the unbalanced state detected by the balance re-measurement step, and placing the selected weight in any of the recesses of the end face plate; and
And a collar arrangement step of inserting a collar through the rotation shaft and closing the concave portion of the end face plate on which the weight is arranged. A balance correction method for a rotor of a rotating electrical machine comprising: a rotating shaft; a rotor core supported by the rotating shaft; and an end face plate disposed on at least one axial end face of the rotor core,
In the end face plate, a plurality of recesses are formed in the periphery of the rotary shaft on the surface opposite to the surface facing the rotor core,
The balance correction method is:
A balance measuring step of measuring a balance state of the rotor core supported by the rotating shaft;
Selecting a weight according to the unbalanced state detected by the balance measurement step, and placing the selected weight in any of the recesses of the end face plate; and
And a collar arrangement step of inserting a collar through the rotation shaft and closing the concave portion of the end face plate on which the weight is arranged.

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