JPH0752135B2 - Rotor imbalance correction device - Google Patents

Description

Description: A. Field of Industrial Application The present invention relates to a device for correcting unbalance of a rotating body, and more particularly to a rotating body in which a static unbalance allowable value and a dynamic unbalance allowable value are individually standardized. Regarding the technology of correcting each imbalance.

B. Conventional Technology Conventionally, static imbalance correction and dynamic imbalance correction are known as means for correcting imbalance of a rotating body.

In the case of a thin disk-shaped rotating body such as a flywheel or a propeller fan, even imbalance is ignored and only static imbalance is considered, and this static imbalance is corrected by one correction surface of the rotating body, so-called one surface. Modifications have been made.

On the other hand, in the case of a rotating body having a certain length in the rotation axis direction such as an armature of a motor, the imbalance is corrected in consideration of the dynamic imbalance which is the sum of static imbalance and even imbalance. As is well known, there are innumerable imbalances of this kind of rotating body in each part of the rotating body, but in suspending, the imbalance is represented by two appropriate surfaces of the rotating body.
The so-called two-sided correction, which corrects the imbalances on the respective surfaces, is performed.

Since the dynamic imbalance is the sum of the static imbalance and the even imbalance as described above, the static imbalance can be reduced to some extent by correcting the dynamic imbalance. That is, as shown in FIG. 11, it is assumed that the initial dynamic unbalance on the left correction surface L of the rotating body w before the unbalance correction is _DL and the initial dynamic unbalance on the right correction surface R is _DR . Vector shown in Fig. 12 (a)
_DL indicates the initial dynamic imbalance of the left correction surface L, and vector _DR shown in FIG. 12 (b) indicates the initial dynamic imbalance of the right correction surface R.

The initial dynamic imbalances _DL and _DR of the respective modified surfaces L and R are respectively modified so as to be within the dynamic imbalance allowable value _Da . At this time, since there are inherent limits to the sensitivity of the unbalance measuring machine and the accuracy of the unbalance correcting machine, each of the correction surfaces L and R has
As shown in (b), the residual motion imbalance Δ within the allowable value U _Da
DL, delta _DR remains. Then, as shown in FIG. 12 (c), the sum of the residual dynamic imbalances Δ _DL and Δ _DR is the residual static imbalance Δ.
It becomes _S.

The maximum value of residual motion imbalance Δ _DL , Δ _DR is the allowable value U _Da
Therefore, the maximum value of the residual static imbalance Δ _S is twice the allowable value U _Da of dynamic imbalance (2U _Da ). In this way, if the residual dynamic imbalance is corrected to within the allowable value, it can be suppressed to less than twice the allowable value of the residual static imbalance. Therefore, in the unbalance correction device for a rotor having a thickness in the rotation axis direction, The imbalance was corrected by focusing on the residual dynamic imbalance.

C. Problems to be Solved by the Invention By the way, the above-mentioned residual static imbalance Δ _S causes vibration when the rotating body is rotationally driven, and therefore vibration during rotation needs to be particularly suppressed. For armatures used in precision motors, the allowable value of residual unbalance Δ _S
As shown in FIG. 12 (c), U _Sa may be regulated to a value less than or equal to twice the allowable value U _{Da on} one side for dynamic imbalance.

However, according to the above-described conventional dynamic unbalance correction device, the maximum value of the residual static unbalance Δ _S after dynamic unbalance correction reaches up to twice the allowable value U _Da of the residual dynamic unbalance, so I can't be satisfied.

Therefore, the residual static imbalance is kept within the allowable value U _Sa by accurately adjusting the magnitudes of the residual dynamic imbalances Δ _DL and Δ _DR to values sufficiently smaller than the allowable value U _Da. However, such highly accurate correction work is very complicated and causes a decrease in work efficiency.

The present invention has been made in view of such circumstances, and corrects the unbalance of the rotating body in which the allowable value U _Sa of the residual static imbalance is specified to be less than twice the allowable value U _Da of the residual dynamic imbalance. In such a case, it is an object of the present invention to provide an unbalance correction device that can satisfy both of the above-mentioned allowable values and can efficiently perform the correction work.

D. Means for Solving Problems The present invention has the following configuration in order to solve the above problems.

That is, the unbalance correction device for a rotating body according to the present invention is
An apparatus main body in which a measurement unit, a first correction mechanism, a second correction mechanism, and a second measurement unit are arranged in a loop, a correction method determination unit and a re-correction determination provided in association with the apparatus main body. And a section.

The first measuring unit respectively measures the dynamic imbalance on the two correction surfaces of the rotating body.

The correction method determination unit determines, based on the measurement result of the first measurement unit, whether to perform static unbalance correction or dynamic unbalance correction on the rotating body.

The first correction mechanism corrects the first component force of the static imbalance of the rotating body when the correction method determination unit selects the static imbalance correction, while the correction method determination unit selects the dynamic imbalance correction. Then, the polar coordinates of the dynamic imbalance are determined and corrected on one of the correction surfaces of the rotating body.

The second correction mechanism corrects the second component force of the static imbalance of the rotary body when the correction method determination unit selects the static imbalance correction for the rotary body that has passed through the first correction mechanism.
When the correction method determination unit selects the dynamic imbalance correction,
On the other correction surface of the rotating body, polar coordinates of dynamic imbalance are determined and corrected.

The second measuring unit measures the imbalance of the rotating body that has passed through the second correction mechanism.

The re-correction determination unit, based on the measurement result of the second measurement unit,
It is determined whether or not the rotary body needs to be re-corrected, and if the re-correction is necessary, the rotary body is re-corrected by the apparatus body.

E. Action According to the present invention, in order for the correction method determination unit to determine the unbalance correction method of the rotating body in order to satisfy both the dynamic unbalance and the static unbalance allowed values, whether the dynamic unbalance correction is appropriate or the static unbalance correction is performed. Whether the correction is appropriate is judged based on the measurement result of the dynamic imbalance of the rotating body, and the imbalance is corrected by selecting an appropriate correction method. Then, the dynamic imbalance of the rotating body after the first correction (primary correction) is re-measured, and the second correction (secondary correction) is performed only on the rotating body that needs the re-correction.

F. Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic block diagram of an unbalance correction device for a rotating body according to an embodiment of the present invention, and FIG. 2 is a rotating body whose unbalance is corrected by the device shown in FIG.

In FIG. 2, a rotating body w is an armature of a motor, and a surface passing through the center of gravity G of the rotating body w at right angles to the axial direction is a static unbalance correction surface S, and a plane located at a distance l from the static unbalance correction surface S is a dynamic unbalance. Is a left correction surface L and a right correction surface R for correcting. The shaded area shown in FIG.
The cutting part when the imbalance in S, L, and R is corrected is shown. Further, t is a cutting depth, and the correction amount is adjusted by appropriately changing the depth t.

The configuration of the apparatus according to this embodiment will be described below with reference to FIG.

This correction device includes a first measuring unit 11, a first correction mechanism 12,
The apparatus includes a device body in which the second correction mechanism 13 and the second measuring unit 14 are arranged in a loop, a microcomputer 15 provided in association with the device body, and the like.

The first measuring unit 11 measures the dynamic imbalances on the two correction surfaces L and R of the rotating body w carried in by the work carrying-in path 16.

The first correction mechanism 12 receives the rotating body w whose imbalance is measured by the first measuring unit 11 via the transport mechanism 17. The first correction mechanism 12 is based on a command from the microcomputer 15,
Correct the static unbalanced first component force of the rotor w, or
After determining the polar coordinates of the dynamic imbalance of the left correction surface L of the rotating body w, the dynamic imbalance of the left correction surface L is corrected.

The unbalance correction mechanism of the first correction mechanism 12 will be described with reference to FIG.

The first correction mechanism 12 includes three rotary blades 18 ₁ and 18 that rotate coaxially in order to remove an unbalance amount from the unbalance direction of the rotating body w.
And a _2, 18 _3. The rotary blades 18 ₂ and 18 _{3 at} both ends are arranged at the same distance m with respect to the central rotary blade 18 ₁ . This distance m is set at a position facing both phosphorus core teeth 19 ₂ and 19 ₃ of the iron core tooth 19 ₁ when the rotary blade 18 ₁ faces the iron core tooth 19 ₁ of the rotating pair w.

The rotary blades 18 ₁ , 18 ₂ , 18 ₃ are configured to be integrally movable between the static imbalance correction surface S and the left correction surface L of the rotating body w. In addition, the rotary blades 18 ₁ , 18 ₂ , 18 ₃ are fixed and the rotary body w
May be configured to move, in essence, the rotary blade 18
It is only necessary that ₁ , 18 ₂ and 18 ₃ and the rotating body w be relatively movable in the axial direction of the rotating body w.

Further, the first correction mechanism 12 is provided with a rotation mechanism and an angle detector for rotatably driving the rotating body w so that its unbalanced direction faces the rotary blade 18 ₁ .

The second correction mechanism 13 receives the unbalance-corrected rotating body w via the transport mechanism 20 and corrects the static unbalanced second component force of the rotating body w, or After determining the polar coordinates of the dynamic imbalance of the right correction surface R of the rotating body w, the dynamic imbalance of the right correction surface R is corrected.

The structure of the second correction mechanism 13 is the same as that of the first correction mechanism 12 described above, but the rotary blade provided in the second correction mechanism 13 is
18 ₁ , 18 ₂ and 18 ₃ are configured to be movable between the static imbalance correction surface S and the right correction surface R of the rotating body w.

The second measuring unit 14 is the rotating body w corrected by the second correction mechanism 13.
The residual imbalance of is measured. In connection with the second measuring section 14, a pass-out path 22 for passing the acceptable product and a pass-out path 23 for rejecting the rejected product are provided, and the rotating body w measured by the second measuring section 14 is further conveyed to the first measuring section 11. A transport mechanism 24 is provided.

The microcomputer 15 calculates the unbalance amount and the unbalance direction of the rotating body w based on the unbalance measurement data provided from the first measuring unit 11 and the second measuring unit 14, and then the first correcting mechanism 12 and the second correcting mechanism. A correction command is issued to each mechanism 13. The microcomputer 15 corresponds to the correction method determination unit and the re-correction determination unit in the present invention, and such a function will be described in detail in the operation description given later.

The operation of this embodiment will be described below with reference to the flow chart shown in FIG.

In step S1, the first measuring unit 11 detects the imbalance on the left and right correction surfaces L, R of the loaded rotating body w, and based on this, the microcomputer 15 determines the dynamic imbalance _DL , R on the left and right correction surfaces L, R. Calculate _DR .

Next, in step S2, the microcomputer 15
As shown in FIG. 5, the static unbalance _S is calculated by combining the dynamic unbalances _DL and _DR, and the static unbalance amount U _S is the maximum cutting amount U.
_It is determined whether it is smaller than _S0 . Where the maximum cutting amount
U _S0 is the maximum value of the unbalance amount that can be corrected by this device, and is preset as a numerical value.

When the static unbalance amount U _S is larger than the maximum cutting amount U _S0 , the process proceeds to step S3 and the uncorrectable display is performed. At this time, the rotating body w has the first correction mechanism 12, the second correction mechanism 13 and the second correction mechanism 13.
It passes through the measurement unit 14 and is unloaded from the rejected product unloading path 23.

On the other hand, in step S2, the static unbalance amount U _S is the maximum cutting amount.
If it is determined that it is smaller than U _S0 , the process proceeds to step S4. In this step S4, the initial static unbalance amount U _{S of} the rotating body w
Is smaller than the static unbalance allowable value U _Sa , and its initial dynamic unbalance amount U _D (dynamic unbalance amount U _DL and U _DR ) is smaller than the dynamic unbalance allowable value U _Da , respectively.

When the initial unbalance amounts U _S , U _D satisfy the allowable values U _Sa , U _Da , respectively, it is not necessary to correct the rotating body w.
The rotating body w passes through the first correction mechanism 12 and the second correction mechanism 13 and is sent to the second measurement unit 14. In the second measuring unit 14, the unbalance amount of the rotating body w is re-measured, and each allowable value U _Sa ,
When U _Da is satisfied, the rotating body w is carried out to the acceptable product carrying-out path 22.

On the other hand, when it is determined in step S4 that the initial unbalance amounts U _S and U _D do not satisfy the allowable values U _Sa and U _Da , respectively, the process proceeds to step S5.

Step S5 is a step corresponding to the correction method determination unit in the present invention, and based on the result measured by the first measurement unit 11, performs static unbalance correction or dynamic unbalance correction on the rotating body w. To judge.

In this embodiment, this judgment is made as follows. That is, the sum of the magnitudes of the initial dynamic imbalances _DL and _DR of the rotating body w, | _DL | + | _DR |, is calculated, and that value is compared with the maximum initial imbalance amount U _0, and the static imbalance correction is made according to the result. Alternatively, one of dynamic imbalance correction is selected. Here, the maximum initial unbalance amount U ₀ is the maximum value of the initial unbalance amount that allows the residual static unbalance amount to be included in the allowable value U _Sa when the rotating body w is corrected on two sides. Hereinafter, the maximum initial imbalance amount U ₀ will be described.

That is, as shown in FIG.
_When the distribution of _DL | + | _DR | is taken, these rotating bodies include a considerable number of rotating bodies that originally have a small value of | _DL | + | _DR |. In such a rotating body having a small initial dynamic imbalance, the residual static imbalance can be made sufficiently small by performing the two-face correction once.

Therefore, when the rotating body w is corrected on two sides, the maximum initial unbalance amount U ₀ that allows the residual static unbalance to _fall within the allowable value U _Sa is set in advance and is larger than this maximum initial unbalance amount U _0. For a rotor with | _DL | + | _DR | (a rotor distributed in the shaded area in Fig. 6), the static imbalance is corrected while the value of | _DL | + | _DR | is the maximum initial imbalance U _0. For smaller rotating bodies, dynamic imbalance is corrected by two-sided correction.

The maximum initial unbalance amount U ₀ described above can be set as follows.

The measurement sensitivity of the imbalance measuring machine and the correction accuracy of the imbalance correcting machine are peculiar to each device and can be known in advance. For example, it is assumed that an apparatus having an accuracy such that the ratio of the residual dynamic imbalance Δ _D and the initial copper imbalance _D is S% at the maximum is used. Then, when the initial dynamic unbalance is corrected by this device, the maximum value of the residual dynamic unbalance Δ _DL , Δ _DL is {Δ _DL } = | _DL | · S / 100 ... {Δ _DR } = | _DR | · S / 100 ...

The standard of residual static imbalance is expressed by {Δ _DL } + {Δ _DR } <U _Sa …, so by substituting the above equation into the above equation, | _DL | ・ S / 100 + | _DR | ・ S / 100 <U _Sa. When this equation is transformed, it becomes | _DL | + | _DR | <U _Sa · 100 / S…. That is, the size of the initial dynamic imbalance | _DL | + | _DR |
Is a rotating body with a value smaller than U _Sa · 100 / S, 2
Even if the surface is corrected, the standard of residual static imbalance can be satisfied.

Therefore, the maximum initial unbalance amount U ₀ is U _Sa · 100 /
Set S or a value a little smaller than this with a margin.

When the imbalance measurement by the first measuring unit 11 is completed, the rotating body w
Is transported to the first correction mechanism 12 via the transport mechanism 17. In step S5 described above, | _DL | + | _DR | is the maximum initial imbalance.
When it is determined that it is larger than U ₀ , the first correction mechanism 12 receives the following static imbalance correction information from the microcomputer 15.

That is, the microcomputer 15, as shown in FIG.
The static imbalance _S is decomposed into two directions to calculate the first component force _S1 and the second component force _S2 . In this example, the direction of the component axis is 60
The intervals are 0 degrees, 60 degrees, 120 degrees, 240 degrees, and 300 degrees.

When the component forces _S1 and _S2 of the static imbalance _S are obtained, information for correcting the first component force _S1 from the microcomputer 15,
That is, the direction of the first component force _S1 (0 degree direction in this example) and its magnitude U _S1 are given to the first correction mechanism 12.

As a result, in step S6, the rotary blades 18 ₁ , 18 ₂ , and 18 ₃ of the first correction mechanism 12 are aligned with the precise imbalance correction surface S of the rotating body w. Further, as the rotating body w is driven to rotate, as shown in FIG. 8, the iron core teeth 19 of the rotating body w in the 0 degree direction are rotated.
Aligned to face 18 ₁ . Then, the rotary blade w is cut to a depth corresponding to the first force component U _S1 by the rotary blades 18 ₁ , 18 ₂ , and 18 ₃ , so that the rotary blade w has 0 degrees, 3 degrees.
The weights of U ₁ , U ₂ and U ₃ are excluded from the directions of 40 degrees and 20 degrees. The sum ( _−S1 ) of these correction vectors ₁ , ₂ , and ₃ is balanced with the first component force _S1, and the unbalance in the direction of the component force axis of 0 ° is corrected.

When the correction of the first component force is completed by the first correction mechanism 12, the rotating body w is conveyed to the second correction mechanism 13 via the conveyance mechanism 20. The second correction mechanism 13 is provided by the microcomputer 15.
Information for correcting the imbalance in the direction of the component force axis of 60 degrees, that is, the direction of the second component force _S2 (in this example, the direction of 60 degrees) and its magnitude U _S2 are given.

As a result, in step S7, the second correction mechanism 13 sets the rotary blades 18 ₁ , 18 ₂ and 18 ₃ on the static imbalance correction surface S similarly to the first correction mechanism 12, and as shown in FIG. The 60-degree iron core teeth 19 of the rotating body w are aligned so as to face the rotating teeth 18 ₁ . And, the iron core teeth 19 in the directions of 40 degrees, 60 degrees and 80 degrees
Is cut to a depth that balances the component force _{S2 in} the direction of 60 degrees.

On the other hand, if it is determined in step S5 that | _DL | + | _DL | is smaller than the maximum initial imbalance amount U ₀ , the first correction mechanism 12 receives the following dynamic imbalance correction information from the microcomputer 15.

Now, the dynamic imbalance _{DL on} the left and right correction surfaces L and R of the rotating body w,
It is assumed that the _DR has polar coordinates as shown in FIG.
The microcomputer 15 is the same as the iron core tooth 19 of the rotating body w.
From the polar coordinate axes in steps of 20 degrees, select the polar axis closest to the direction of dynamic unbalance _DL , _DR . In this example, a 320 degree axis close to the dynamic unbalance _DL and a 40 degree axis close to the dynamic unbalance _DR are selected. And motion imbalance
Dynamic unbalance with the vector _DL ′ rotated _DL about 320 degree axis
A vector _DR ′ obtained by rotating and moving _DR around the 40 ° axis is obtained. The first correction mechanism 12 receives the correction information related to the vector _DL '(that is, the 320 degree axis and the unbalance amount U _{DL in} that direction), and the second correction mechanism 13 receives the correction information related to the vector _DR ' (that is, , 40 degree axis and unbalance amount in that direction U _DR ).

As shown in step S8, the first correction mechanism 12 sets the rotary blades 18 ₁ , 18 ₂ , 18 ₃ to the left correction surface L based on the correction information of the left correction surface L given from the microcomputer 15, and By setting the rotating body w on the 320 degree axis and cutting the rotating body w to a depth balanced with the unbalance amount U _DL , the dynamic unbalance _DL of the left correction surface L of the rotating body w is corrected.

When the dynamic imbalance _DL of the left correction surface L is corrected by the first correction mechanism 12, the rotating body w is conveyed to the second correction mechanism 13 via the conveyance mechanism 20.

As shown in step S9, the second correction mechanism 13 sets the rotary blades 18 ₁ , 18 ₂ , 18 ₃ to the right correction surface R based on the correction information of the right correction surface R provided from the microcomputer 15. , The rotary body w is set on the axis of 40 degrees, and the dynamic unbalance _DR of the right correction surface R of the rotary body w is corrected by cutting the rotary body w to a depth balanced with the unbalance amount U _DR .

In steps S8 and S9 described above, the dynamic imbalance is calculated using _DL 'and _DR ' which are obtained approximately.
_{Since DL} and _DR are corrected on two sides, some errors are included. However, in step S5 described above, | _DL | +
Since ｜ _DR | is smaller than the maximum initial unbalance amount U ₀ by two-sided correction, | _DL | and ｜ _DR |
Is originally small, and the error due to the above-mentioned approximation is small, which is not a problem.

When the correction of the static imbalance or the correction of the dynamic imbalance is completed, the rotating body w is moved from the second correction mechanism 13 to the second measuring unit.
Transported to 14. The second measuring unit 14 re-measures the dynamic imbalance of the rotating body w.

By giving this measurement result to the microcomputer 15, as shown in step S10, the microcomputer 15 determines that the static unbalance amount U _S and the dynamic unbalance amount U _D of the rotating body w are the respective allowable values U _Sa , By determining whether or not U _Da is satisfied, it is determined whether or not re-correction is necessary for the rotating body w. Therefore, step S1
0 corresponds to the recorrection determination unit in the present invention.

The static unbalance amount U _S and the dynamic unbalance amount U _D of the rotating body w are allowable values.
When U _Sa and U _Da are satisfied, the rotor w is unloaded from the acceptable product unloading path 22, while the static unbalance amount U _S and the dynamic unbalance amount U _D of the rotor w are
When the allowable amounts U _Sa and U _Da are not satisfied, it is determined that the secondary correction is necessary, and the rotating body w is transported to the first measuring unit 11 via the transport mechanism 24. Then, the first measuring unit 11, the first
The same correction (secondary correction) as described above is performed by the correction mechanism 12 and the second correction mechanism 13.

The rotator w that has been secondarily corrected is again measured by the second measuring unit 14.
The unbalance is checked, and if the allowable values U _Sa and U _Da are satisfied, the product is conveyed from the acceptable product unloading path 22, and if the allowable values U _Sa and U _Da are not satisfied, it is determined as a rejected product and the unacceptable product unloading path 23 is determined. Carry out.

In addition, the above-mentioned step S2 is, in essence, its rotating body w.
Since it is a step of determining whether or not the unbalance amount of can be corrected, it is not always necessary to compare the static unbalance amount U _S with the maximum cutting amount. For example, the residual dynamic unbalance amounts U _D and U _{S that} are finally calculated by simulating the case where the rotor w is subjected to the primary correction and the secondary correction are within the respective allowable values U _Da and U _Sa. Whether or not it can be modified may be determined by determining whether or not it is included.

Further, the correction method determination unit corresponding to step S5 described above,
By comparing | _DL | + | _DR | of the rotating body w with the maximum initial unbalance amount U ₀ , it is determined whether to correct the static imbalance or the dynamic imbalance. It is not limited to such a judgment means. For example, when the static unbalance amount U _S of the rotating body w is larger than the static unbalance allowable value U _Sa , the first correction mechanism 12 and the second correction mechanism.
The static imbalance is corrected by 13, and the dynamic imbalance of the rotor w is corrected.
When U _D (U _DL and U _DR ) is larger than the allowable value U _{Da of} dynamic imbalance, the dynamic imbalance may be corrected by the first correction mechanism 12 and the second correction mechanism 13.

G. Effects of the Invention As is clear from the above description, according to the unbalance correction device for a rotating body according to the present invention, the correction method determination unit determines the dynamic unbalance correction when determining the correction method for the unbalance of the rotating body. Is appropriate or it is appropriate to perform static imbalance correction based on the measurement result of the dynamic imbalance of the rotating body, and an appropriate correction method is selected to firstly correct the imbalance and The imbalance of the finished rotating body is measured, and the secondary correction is performed only for the rotating body that needs to be re-corrected.
It is possible to efficiently perform the correction work that satisfies both the dynamic imbalance and the static imbalance allowable values.

Furthermore, for example, in the case of a rotating body in which the center of gravity is biased to one of the dynamic unbalance correction surfaces, if the static unbalance is corrected on the static unbalance correction surface, the dynamic unbalance amount may increase,
According to the present invention, the imbalance is checked after the primary correction of the rotating body, and the secondary imbalance is corrected when the dynamic imbalance exceeds the allowable value. It is very convenient to be able to make corrections.

[Brief description of drawings]

1 to 9 are explanatory views of one embodiment of the present invention.
FIG. 1 is a schematic block diagram of an unbalance correction device, FIG. 2 is an external view of a rotating body to be unbalance corrected, FIG. 3 is an explanatory view of a correction mechanism, and FIG. 4 is a flowchart showing a procedure of unbalance measurement and unbalance correction. Figure 5 shows static imbalance _S and dynamic imbalance.
6 is a vector diagram showing the relationship with _DL and _DR , Fig. 6 is a distribution diagram of the sum of the initial dynamic imbalance of the rotating body, and Fig. 7 is the static imbalance _S and the first and second component forces _S1 and _S2 . FIG. 8 is an explanatory view of the first component force correcting process by the first correcting mechanism, FIG. 9 is an explanatory diagram of the second component force correcting process by the second correcting mechanism, and FIG. It is explanatory drawing of the 2 surface correction process by a 1st correction mechanism and a 2nd correction mechanism. FIG. 11 is an explanatory view of a dynamic imbalance represented by the left and right correction surfaces of the rotating body, and FIG. 12 is a vector diagram of the imbalance generated on the left and right correction surfaces when the correction is performed by the conventional device. 11 …… First measuring unit 12 …… First correcting mechanism 13 …… Second correcting mechanism 14 …… Second measuring unit 15 …… Microcomputer

Claims (1)

[Claims] 1. A device main body in which a first measuring unit, a first correcting mechanism, a second correcting mechanism, and a second measuring unit are arranged in a loop, and a correction provided in association with the device main body. An unbalance correction device for a rotating body, comprising a system determination section and a re-correction determination section, wherein the first measuring section measures the dynamic unbalance in each of the two correction surfaces of the rotating body, and the correction method determination section, Based on the measurement result of the first measuring unit, it is determined whether to make a static imbalance correction or a dynamic imbalance correction for the rotating body, and in the first correction mechanism, the correction method determination unit selects static imbalance correction. In this case, while correcting the static unbalanced first component force of the rotor, when the correction method determination unit selects the dynamic unbalance correction, the polar coordinates of the dynamic unbalance are determined for one of the correction surfaces of the rotor. And the second correction mechanism includes the first correction mechanism. When the correction method determination unit selects the static imbalance correction for the rotating body that has passed through the normal mechanism, the correction method determination unit selects the dynamic imbalance correction while correcting the second component force of the static imbalance of the rotating body. In this case, the other correction surface of the rotor is corrected by determining the polar coordinates of the dynamic unbalance, the second measuring unit measures the unbalance of the rotor through the second correcting mechanism, and the recorrection determining unit is A determination is made based on the measurement result of the second measuring unit as to whether or not the rotary body needs to be re-corrected, and when the re-correction is necessary, the rotary body is re-corrected by the apparatus main body. An unbalance correction device for a rotating body.