JPH05273070A - Unbalance correcting device of rotary body - Google Patents

Abstract

PURPOSE:To obtain a device which can correct unbalance of a disc-shaped rotary body accurately and automatically in a short time without depending on an experienced worker. CONSTITUTION:This correcting device is provided with a support device 10 which supports a rotary body, an angle indexing device 11 far controlling and rotating the rotary body, a weight measuring device 12 for measuring weight of the rotary body on the support device 10, and means (16 and 17) for grinding and eliminating an unbalance part of the rotary body. Furthermore, it is provided with a means (13) for controlling the above angle indexing device 11 and a means for grinding and eliminating based on the unbalance angle and unbalance weight which are measured by a balancing machine and then a weight measurement value from a weight-measuring device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for correcting an imbalance of a disk-shaped rotary member such as a compressor impeller by removing the unbalanced part.

[0002]

2. Description of the Related Art A disk-shaped rotating body that rotates at a high speed, such as an impeller of a compressor, needs to correct an imbalance generated during the production process.

Conventionally, the imbalance correction of such a disk-shaped rotating body is performed as follows. That is, the impeller 1 as shown in FIG.
Considering the above, first, the balance of the impeller 1 is measured by a balancing machine (not shown), and the angle and unbalance amount (weight) of the unbalanced portion (grinding portion) 4 on the cover side 2 and the disk side 3 are measured. Then, the impeller 1 is lowered onto the base plate 5, the unbalanced portions 4 on the cover side 2 and the disk side 3 are manually ground and removed by a grinder, and the balancer is mounted again to measure the balance. .. In the balance measurement, if the impeller 1 is still unbalanced, the unbalanced portion is again ground and removed, and this operation is repeated until the unbalance is completely corrected.

When the impeller 1 is small and the amount of unbalance is small, the unbalanced portion on only one side of the cover side 2 or the disk side 3 may be ground and removed.

[0005]

By the way, in the conventional unbalance correction work, it is difficult to accurately measure the weight after removing the unbalance part. I rely on my intuition. Therefore, a skilled worker is required for the unbalance correction work, and the number of times of attachment / detachment to / from the balancing machine is increased, which results in a long work time and a cost increase.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an unbalance correction device for a rotating body, which can accurately perform unbalance correction in a short time without relying on a skilled worker. And

[0007]

To achieve the above object, according to the present invention, a support device for rotatably supporting a disk-shaped rotating body whose unbalance angle and unbalance weight are measured, and a support device supported by this support device are provided. Angle indexing device for controlling and rotating the disk-shaped rotating body, a weight measuring device for measuring the weight of the disk-shaped rotating body on the supporting device, and an unbalanced portion of the disk-shaped rotating body ground and removed. And a control means for operating the angle indexing device and the grinding means based on the input unbalanced angle and unbalanced weight, and the weight measurement value from the weight measuring device. An unbalance correction device for a rotating body is provided.

[0008]

According to the above means, the grinding range of the disk-shaped rotary body is calculated based on the measured unbalance angle and the unbalanced weight, and the angle indexing device controls the disk-shaped rotary body to rotate in the grinding range. While performing the grinding means, the disc-shaped rotating body is sent in the radial direction and the axial direction to grind and remove the unbalanced portion, and at the same time, the weight of the disc-shaped rotating body is measured and the transition of grinding and removal of the unbalanced portion is observed. When the unbalance weight is reduced, the work is stopped and the unbalance correction is completed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention illustrated in FIGS. 1 to 4 will be described in detail below. In addition, in FIG.
The same parts as those shown in are given the same reference numerals.

FIG. 1 is a schematic perspective view of an unbalance correction device for a compressor impeller 1 which is an example of a disk-shaped rotating body, FIG. 2 is a block diagram showing the configuration of its control device, and FIG. It is a flowchart.

In FIG. 1, 10 is a supporting device for rotatably supporting the impeller 1, 11 is an angle indexing device for controlling and rotating the impeller 1, and these are weight measuring devices 12.
Are erected on the upper surface of each and electrically connected to the control device 13. A dust collector 14 is erected on the floor across the weight measuring device 12 between the supporting devices 10 on the weight measuring device 12. 15 is impeller 1
Is a support shaft that is mounted on the axis center of. 16 is a robot, 1
Reference numeral 7 is a grindstone attached to the tip of the arm, and 18 is an automatic tool changing device provided near the robot 16, which constitute grinding means and are electrically connected to the control device 13. The control device 13 is a personal computer 19
And an input device 20 and a display device 21.

As shown in FIG. 2, the personal computer 19 comprises a central processing unit 22, a storage unit 23, a drive instructing unit 24, and respective interfaces 25. The drive instruction unit 24 is connected to the angle indexing device 11, and each interface 25 is connected to the weight measuring device 12, the robot 16, the input device 20, and the display device 21, respectively.

Next, the operation of the unbalance correction device will be described. Before that, the support shaft 15 is attached to the shaft center of the impeller 1 by a balancing machine (not shown) to measure the angle and unbalance weight of the unbalance portion 4. To do. Next, the impeller 1 and the support shaft 15 are rotatably supported by the support device 10 of the unbalance correction device, and one end of the support shaft 15 is attached to the angle indexing device 11.

Next, referring to the flow chart shown in FIG. 3, in step S1, the unbalanced angle of the impeller 1, the unbalanced weight of the cover side 2 and the disk side 3 or any one of them (grinding weight). ), And the grinding depth limit amount are input to the storage unit 23 by the input device 20 of the control device 13 via the interface 25 of the personal computer 19. Next, in S2, the central processing unit 22 calculates the grinding range (area) of both sides or one side from the input value, and the storage unit 23 stores the result.

In step S3, the angle indexing device 11 and the robot 16 are returned to their origins. In S4, the angle indexing device 11 is set to the personal computer 1
The unbalance angle input to 9 is set to the grinding start position of the unbalance part 4, and the grindstone 17 of the robot 16 is moved to this grinding start position in S5.

Next, in step S6, the grindstone 17 is rotated in the direction in which the grinding powder falls to the dust collector 14 and pressed against the unbalanced portion 4, and in step S7, the impeller 1 is stored by the angle indexing device 11. It is rotated at the rotation angle of the grinding range stored in the unit 23.

As shown in step S8, when the grindstone 17 grinds and removes the grinding range of the unbalanced portion 4 once, the angle indexing device 11 is stopped, and in step S9, the robot 1
The grindstone 17 is pulled up from the unbalanced part 4 by 6 and S
At 10, the angle indexing device 11 returns the unbalanced portion 4 to its grinding start position.

During this period, the weight is measured by the weight measuring device 12 in step 11, and in S12,
The central processing unit 22 performs a comparison calculation between the measurement value transmitted from the weight measuring device 12 and the unbalanced weight input to the storage unit 23. If the weight reduction value is equal to the unbalanced weight, the process proceeds to S13 to determine whether another surface is ground. If the weight reduction value is smaller than the unbalanced weight, the process proceeds to step S14 to start grinding the grindstone 17. After returning to the position, the pressing of the grindstone 17 is restarted, and the subsequent work is repeated.

In step S15, the central processing unit 22 determines whether the weight measurement value transmitted from the weight measuring device 12 has reached a predetermined value. Considered exhausted, step S
At 16, the robot 16 is instructed to replace the grindstone 17 with the automatic tool changer 18.

When removing the unbalanced portion 4 by grinding,
It is important to drop the ground powder that has been ground and removed into the dust collector 14 and store it to prevent it from adhering to the support device 10 and the weight measuring device 12 so that the weight of the ground powder is not added to the measured value. Is.

To show a concrete example of the unbalance correction, for example, the unbalance weight of the impeller 1 is 50 g,
When the grinding of only the cover side 2 is designated and input to the personal computer 19, as a result of the repetition of step S14, the weight measurement value (weight reduction value) becomes 50 g,
The grinding of the cover side 2 is completed (step S12), and the imbalance correction of the impeller 1 is completed.

Further, for example, when the unbalanced weight is 100 g on the cover side 2 and 80 g on the disc side 3 and the grinding is performed on both sides from the cover side 2, the weight reduction value is input. Is 10
When it reaches 0 g, the grinding of the cover side 2 is completed (step S
12) Next, returning from step S13 to step S5, the grindstone 17 is moved to the grinding start position on the disk side 3, and grinding removal of the unbalanced portion 4 is started. And
When the weight reduction value reaches 180 g, the grinding of the cover side 2 and the disk side 3 is completed (step S13), and the imbalance correction for this impeller 1 is completed.

The present invention is not only applied to the compressor impeller of the above-described embodiment, but can be used to correct the imbalance of any disk-shaped rotating body.

[0024]

According to the present invention, a control device that rotatably supports a disk-shaped rotating body whose unbalance angle and unbalance weight are measured by a supporting device and inputs the measured unbalance angle and unbalance weight. By rotating it to that angle via the angle indexing device, comparing it with the weight measurement value from the weight measuring device, and operating the robot and the angle indexing device to remove the unbalanced part. It becomes possible to perform such balance correction accurately, automatically in a short time. Therefore,
The cost can be reduced by shortening the working time without requiring a skilled worker.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an unbalance correction device for a rotating body according to the present invention.

FIG. 2 is a block diagram showing a configuration example of a control device.

FIG. 3 is a flowchart showing an example of an unbalance correction work.

FIG. 4 is a perspective view of an impeller used for explaining an unbalance correction operation of a conventional rotating body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Impeller 4 Unbalance part 10 Supporting device 11 Angle indexing device 12 Weight measuring device 13 Control device 14 Dust collector 16 Robot 17 Whetstone

Claims (1)

[Claims] 1. A support device for rotatably supporting a disk-shaped rotating body whose unbalanced angle and unbalanced weight are measured, and an angle index for controlling and rotating the disk-shaped rotating body supported by this supporting device. Device, a weight measuring device for measuring the weight of the disk-shaped rotating body on the supporting device, a grinding means for grinding and removing an unbalanced portion of the disk-shaped rotating body, and the input unbalance angle and unbalance. An unbalance correction device for a rotary body, comprising: a weight and a control means for operating the angle indexing device and the grinding means based on a weight measurement value from the weight measurement device.