JP5331083B2 - Rotation balance correction method and rotation balance correction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automate a correction work of rotation balance and to simultaneously improve efficiency of the correction work of the rotation balance in an impeller which has a processing prohibition area where correction processing is prohibited. <P>SOLUTION: When rotation balance of an impeller is corrected by a rotation balance correction machine, processing amount calculation means 67 calculates cut depth in correction processing to the impeller based on an imbalance amount, processing range calculation means 68 calculates a processing range based on the cut depth, area division means 66 divides the impeller into a processable area and a processing prohibition area in the circumferential direction, and area determination means 70 performs area determination of whether a correction object area in which the whole processing range at an imbalance correction position is settled is a correctable object area which is an area with only a processable area, or a correction prohibition area which is an area including the processing prohibition area, and processing position setting means 71 sets a processing position as the processable area based on a result of the area determination. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a rotation balance correction method and a rotation balance correction machine that correct a rotation balance state of a rotation component by removing a part of the rotation component. The rotating component is, for example, an impeller that compresses a fluid, and is used as, for example, an impeller of a supercharger.

  Rotating parts, such as impellers that rotate around the rotation center line, are measured after the unbalance position and unbalance amount are measured by a rotating balance measuring instrument in order to correct the unbalance amount generated in the manufacturing process. The amount corresponding to the unbalance amount at the unbalance position is removed by cutting or grinding by the balance corrector (see, for example, Patent Documents 1 and 2).

JP 2003-302304 A JP-A-5-273070

By the way, if the rotation balance correction work is performed manually by an operator, it takes time and the efficiency of the correction work is low. In addition, a large variation may occur in the rotational balance state of the impeller after correction. Therefore, by automating the rotation balance correction, the efficiency of correction work and the occurrence of large variations can be improved.
On the other hand, it is necessary to prohibit the correction processing, such as the blade of the impeller, from the portion where the correction processing greatly reduces the operation performance of the rotating part. However, in a rotating part having a process prohibition area that is a part where correction processing is prohibited, if there is an unbalanced position in the process prohibition area, it is difficult to cope with automation of the correction work, and the efficiency of the correction work is reduced. There is room for improvement.

  The present invention has been made in view of such circumstances, automating the rotation balance correction work, and improving the efficiency of the rotation balance correction work in a rotating part having a work prohibited area where the correction work is prohibited. It aims to plan.

  The invention described in claim 1 is a rotation balance correcting method in which the rotation balance of the rotating component (20) is corrected by a rotating balance correcting machine (1) that performs correction processing for removing a part of the rotating component (20). The amount of machining (Da) in the correction machining for the rotating component (20) having the reference position mark (26) and having the unbalanced position (Pa) and the unbalanced amount (Ma) measured is the unbalanced amount. A machining amount calculation step calculated based on the amount (Ma), a machining range calculation step where the machining range (Na) in the correction machining is calculated based on the machining amount (Da), and the rotating component ( 20) is a work support step in which the work balance member (30) of the rotational balance corrector (1) is positioned, and the unbalance position (Pa) is the machining of the work support member (30). The correction position setting step set as the unbalance correction position (P1, Q1) with respect to the point (Ps), and the processing target part (22a) of the correction processing in the rotating component (20) are at the processing origin (Ps). On the other hand, the region dividing step divided in the circumferential direction into the processable region (R1) in which the correction processing is allowed and the processing prohibited region (R2) in which the correction processing is prohibited, and the unbalance for each one. The correction target region (T) in which the entire processing range (Na) at the correction position (P1, Q1) falls is a region of only the specific processable region (Ra) that is one of the processable regions (R1). A region determination is made as to whether the region is a correction target region (T1) or a correction prohibition target region (T2) that includes a specific processing prohibition region (Rb) that is one of the processing prohibition regions (R2). Be called The region determination step, the processing position setting step in which the processing position of the correction processing is set in the workable region (R1) based on the result of the region determination, and the processing for the rotating component (20) A correction processing step in which the correction processing of the processing amount (Da) is performed at a position, and the processing position setting step includes a predetermined number of the processings in which the unbalance correction positions (P1, Q1) are plural. When there is an area allocating step for allocating to the predetermined number of allocating positions (Q11, Q12) set in the possible area (R1), and the correction target area (T) is the correctable target area (T1) In the machining position setting step, the unbalance correction position (P1, Q1) is set as the machining position in the specific processable area (Ra), and the correction target area (T) is set to the front. The region allocation step is performed when the region is a correction prohibition target region (T2), and the distribution position (Q11, Q12) is set as the processing position in the processing position setting step. This is a rotation balance correction method.

According to this, since the setting of the unbalance correction position in the rotating part and the classification and determination of the workable area and the work prohibition area are performed with respect to the processing origin of the workpiece support member, the correction processing by the rotary balance correction machine can be performed. It becomes easy.
Machining is prohibited by an area allocation process in which the unbalance amount and unbalance correction position are allocated to a predetermined number of processable areas according to the machining amount and machining range calculated based on the unbalance amount at the unbalance position in the rotating part. Since the correction processing in the region is reliably eliminated and the processing position where the correction processing is performed is determined, the efficiency of the correction work is improved.

According to a second aspect of the present invention, in the rotation balance correcting method according to the first aspect, the unit processing prohibited area (Ub) that is one of the processing prohibited areas (R2) and the first circumference that is one direction in the circumferential direction. Unit processing is possible in one processable region (R1) that is adjacent to the unit processing prohibited region (Ub) in the direction and is located farther from the reference position mark (26) than the unit processing prohibited region (Ub). The region (Ua) constitutes one unit region (U), and the rotating component (20) is a specific unit region (U) where the unbalance correction position (P1, Q1) is the unit region (U). U0) and one side adjacent unit area (U1) which is the unit area (U) adjacent to the specific unit area (U0) in the first circumferential direction, and the correction prohibition target area (T2) is , Of the specific unit area (U0) The predetermined number of the processings when the unit processing possible region (Ua) and the specific processing prohibited region (Rb) are over the unit processing prohibited region (Ub) of the one side adjacent unit region (U1). The possible area (R1) is the unit processable area (Ua) of the specific unit area (U0) and the unit processable area (Ua) of the one-side adjacent unit area (U1).
According to this, when the correction processing at the unbalance correction position extends to the one side adjacent unit area, the one side adjacent unit closest to the unbalance correction position other than the unit processable area of the specific unit area Since it is assigned to the unit processable area of the area, it is possible to reliably and easily prevent the correction process in the process-prohibited area while suppressing the decrease in the effect of correcting the rotational balance due to the allocation of the unbalance correction position.

According to a third aspect of the present invention, in the rotational balance correcting method according to the first aspect, the unit processing prohibited area (Ub) that is one of the processing prohibited areas (R2) and the first circumference that is one direction in the circumferential direction. A unit processable area that is one processable area (R1) that is adjacent to the unit process prohibition area (Ub) in the direction and is located farther from the reference position mark (26) than the unit process prohibition area (Ub). When (Ua) constitutes one unit area (U), the rotating component (20) is the specific unit area (U) where the unbalance correction position (P1, Q1) is located. (U0) and the other adjacent unit region (U2) which is the unit region (U) adjacent to the specific unit region (U0) in the second circumferential direction which is the other direction in the circumferential direction, The correction prohibited area (T2) is As the specific processing prohibited area (Rb), only the unit processing prohibited area (Ub) of the specific unit area (U0), or the unit processable area (Ua) and the specific processing prohibited area ( Rb) is a region straddling the unit processing prohibited region (Ub) of the specific unit region (U0), or the specific processing prohibited region (Rb) is the unit processing prohibited region (Ub) of the specific unit region (U0) and the other The predetermined number of the workable regions (R1) is the unit workable region (U0) of the specific unit region (U0) when the region extends over the unit workable region (Ua) of the side adjacent unit region (U2). Ua) and the unit processable region (Ua) of the other side adjacent unit region (U2).
According to this, since the processing position is distributed to the unit processable area of the other unit area closest to the unbalance correction position other than the unit processable area of the specific unit area, the rotation due to the allocation of the unbalance correction position It is possible to reliably and easily prevent the correction processing in the processing-prohibited region while suppressing the decrease in the balance correction effect.

According to a fourth aspect of the present invention, in the rotational balance correction method according to any one of the first to third aspects, the machining amount calculating step includes the distribution position (Q11) in which the unbalance amount (Ma) is the predetermined number. , Q12), a distribution processing amount calculation step in which a distribution processing amount is calculated based on each distribution unbalance amount (Ma1, Ma2) after being distributed to the predetermined number of distribution unbalance amounts (Ma1, Ma2). In the correction processing step, the correction processing is performed with the distribution processing amount.
According to this, when the processing position is distributed and a plurality of distribution processing amounts are calculated from the unbalance amount, the amount of distribution processing to be obtained is larger than when a processing amount based on the unbalance amount is used. This improves the accuracy of the rotation balance correction.

According to a fifth aspect of the present invention, in the rotational balance correction method according to any one of the first to fourth aspects, a processing amount determination as to whether or not the processing amount (Da) is equal to or less than a processing amount upper limit value (Dac). The machining amount calculation step includes a predetermined number of distribution unbalance amounts (Ma1,) at the predetermined number of distribution positions (Q11, Q12). A distribution processing amount calculation step in which a distribution processing amount is calculated based on each distribution unbalance amount (Ma1, Ma2) after being distributed to Ma2), and in the processing position setting step, the processing position is Based on the processing amount determination result, when the processing amount (R1) is set and the processing amount (Da) is equal to or less than the processing amount upper limit (Dac), the correction target region (T) is the correction. In the processing target setting region (T1), in the processing position setting step, the unbalance correction position (P1, Q1) is set as the specific processing possible region (Ra) as the processing position, and the correction target region ( When T) is the correction prohibition target region (T2), the region distribution step is performed, and in the processing position setting step, the distribution position (Q11, Q12) is set as the processing position, When the processing amount (Da) exceeds the processing amount upper limit (Dac), the distribution processing amount calculation step is performed after the region allocation step is performed without performing the region determination step, and the correction is performed. In the processing step, the correction processing is performed with the distribution processing amount.
According to this, even when the machining amount based on the unbalance amount exceeds the machining amount upper limit value, the unbalance correction position and the unbalance amount are distributed, resulting in a large machining amount at one unbalance correction position. The performance degradation of the rotating parts to be performed can be suppressed, and the correction processing efficiency can be improved by easily avoiding the correction processing in the processing prohibited area.

According to a sixth aspect of the present invention, in the rotation balance correcting method according to any one of the first to fifth aspects, the distribution position (Q11, Q12) is a circumference of the predetermined number of the workable regions (R1). It is the central position (R1m1, R1m2) in the direction.
According to this, it is possible to easily set the allocation position while suppressing a decrease in the effect of correcting the rotational balance due to the allocation, and easily and reliably even when the processing range is large and therefore the processing amount is large. The correction processing is prevented from reaching the processing prohibited area, and the efficiency of the correction work can be improved.

The invention according to claim 7 includes a workpiece support member (30) on which a rotating component (20) having a reference position mark (26) is positioned, and the rotating component (20) positioned on the workpiece support member (30). ) In the rotational balance corrector (1) for correcting the rotational balance of the rotating component (20) by performing a correction process for removing a part of the unbalanced amount (Ma) of the rotating component (20) measured in advance. ) Based on the machining amount (Da) and the machining amount calculation means (67) for calculating the machining amount (Da) for the rotating component (20) based on the machining amount (Da). Machining range calculation means (68) for performing, a reference position detection means (63) for detecting the position of the reference position mark (26) in the rotating component (20) as a machining reference position (Pc), Based on the processing reference position (Pc), the rotating component (20) is processed over the entire circumference in the processable region (R1) in which the correction processing is allowed and the processing prohibited region (R2) in which the correction processing is prohibited. ) And an unbalance correction position (P1, Q1) based on the machining reference position (Pc). The correction position setting means (65) set as) and the correction target area (T) in which the entire processing range (Na) at each of the unbalance correction positions (P1, Q1) falls within one A modification prohibition area (T1) that is an area of only the specific processable area (Ra) that is the processable area (R1), or a correction prohibition that is an area that includes one of the process inhibition areas (R2). Target area (T ) Or an area determination means (70) for determining the area, and a machining position setting means (71) for setting the machining position for the correction machining in the machining area (R1) based on the result of the area judgment; The processing device (3) for performing the correction processing on the rotating component (20), and the processing device (3) with respect to the rotating component (20), the processing amount (Da) at the processing position. And a control device (4) for performing correction processing, wherein the processing position setting means (71) sets the unbalance correction positions (P1, Q1) to a predetermined number of the plurality of processable regions (R1). Area distribution means (71a) that distributes to the predetermined number of distribution positions (Q11, Q12) that are set respectively, and when the correction target area (T) is the correctable target area (T1), Machining position setting means (71) sets the unbalance correction position (P1, Q1) as the processing position in the specific processable area (Ra), and the correction target area (T) is the correction prohibition target area (T2). Sometimes, the rotation balance correcting machine (1) sets the predetermined number of the sorting positions (Q11, Q12) as the machining position.
According to this, the rotation balance correction machine which has an effect of the invention of Claim 1 is obtained.

The invention according to claim 8 is the rotation balance correcting machine according to claim 7, further comprising a suction device (11) for fixing the rotating component (20) to the work support member (30) by vacuum pressure, The member (30) is rotatable, and the suction device (11) fixes the rotating component (20) when the work support member (30) rotates.
According to this, when the workpiece support member is rotated for the setting of the processing reference position Pc or the correction processing at the processing position, it is possible to reliably prevent the positional deviation of the rotating parts, so that the accuracy of the correction processing is improved. The effect of correcting the rotation balance is improved.

  ADVANTAGE OF THE INVENTION According to this invention, while improving the rotation balance correction work, it becomes possible to improve the efficiency of the rotation balance correction work in the rotating component having the processing prohibited area where the correction processing is prohibited.

It is a schematic side view of the rotation balance correction machine which concerns on embodiment of this invention. FIG. 2 is a schematic plan view of FIG. 1. It is a principal part front view of the rotation balance correction machine of FIG. 1, and one part is the III-III sectional view taken on the line of FIG. It is a principal part top view of FIG. It is a top view of the impeller by which rotation balance is corrected by the rotation balance correction machine of FIG. 1, and some blades are shown. It is a principal part side view of the impeller in the VI arrow view of FIG. It is a block diagram of the control apparatus of the rotation balance correction machine of FIG. It is a figure explaining the cutting depth of the correction process in the hub part of the impeller by the rotation balance correction machine of FIG. It is a figure equivalent to FIG. 8 explaining the cutting depth of the correction process in the boss | hub part of the impeller by the rotation balance correction machine of FIG. It is a figure explaining the process reference position setting process by the rotation balance correction machine of FIG. 1, and is a figure similar to FIG. It is a figure explaining the blade position setting process by the rotation balance correction machine of FIG. 1, and is a figure similar to FIG. It is a part of flowchart of the correction process of the hub part of the impeller by the rotation balance correction machine of FIG. It is the remaining part of the flowchart of FIG. It is a figure explaining the process position setting process by the rotation balance correction machine of FIG. It is a figure explaining the process position setting process by the rotation balance correction machine of FIG. It is a figure explaining the distribution process of the process position setting process by the rotation balance correction machine of FIG. It is a figure explaining the distribution process of the process position setting process by the rotation balance correction machine of FIG. It is a figure explaining the distribution process of the process position setting process by the rotation balance correction machine of FIG. It is a flowchart of the correction process of the boss | hub part of the impeller by the rotation balance correction machine of FIG.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
Referring to FIG. 1, a rotation balance correcting machine (hereinafter referred to as “correcting machine”) 1 according to an embodiment of the present invention is an impeller 20 (see FIG. 5) that is a rotating part having a reference line 26 as a reference position mark. ) Is a work holding device 2 having a mounting table 30 as a work supporting member that is supported in a state of being positioned as a work, and correction processing for removing a part of the impeller 20 fixed to the mounting table 30. The processing device 3 to be performed and the control device 4 that controls the operation of the processing device 3 are provided, and the processing device 3 controlled by the control device 4 is attached to the impeller 20 at each of the unbalance positions Pa and Pb (see FIG. 5). On the other hand, the rotational balance of the impeller 20 is corrected by performing correction processing by cutting as removal processing.

  Here, the position with respect to the mounting table 30 and the impeller 20 is the center axis L1 (see FIG. 3) of the mounting table 30 or the rotation center line L2 of the impeller 20 positioned on the mounting table 30 unless otherwise specified. It is an angle as a position in the circumferential direction centering on FIGS. The radial direction is a radial direction centered on the central axis L1 or the rotation center line L2, and the axial direction is a direction parallel to the central axis L1 or the rotation center line L2. The Z-axis direction of the correction machine 1 is the axial direction, and in the embodiment is also the vertical direction.

With reference to FIGS. 1 to 4, the correction machine 1 is provided with respect to the base 5 on which the work holding device 2 is installed and the mounting table 30 in addition to the work holding device 2, the processing device 3 and the control device 4. A support device 6 having support portions 6a, 6b, and 6c for supporting the processing device 3 so as to be movable in the X-axis, Y-axis, and Z-axis directions, and a specific portion of the impeller 20 mounted on the mounting table 30 A sensor support unit 7 provided with position sensors 36 and 37 for detecting positions, and a clamp that immobilizes the impeller 20 to the mounting table 30 and the base 5 when the impeller 20 is corrected. A processing box 9 (shown by a two-dot chain line in FIGS. 1 and 2) that forms the processing space 9b by covering the periphery of the mounting table 30 and the processing device 3 while having an opening / closing door 9a. Osamu The chips are machining dust generated during machining and a dust collector 10 to collect by aspiration.
The support device 6, the sensor support unit 7, the clamp device 8, and the processing box 9 are all installed on the base 5. The dust collector 10 includes a hose 10a connected to the processing box 9, and a main body 10b that sucks and collects chips in the processing space 9b through the hose 10a.

As shown in FIGS. 3, 5, and 6, the impeller 20 before the rotation balance is corrected is provided with a through hole 20 a into which a rotating shaft (not shown) that rotates integrally with the impeller 20 is inserted. And a plurality of F blades 24, which are three or more in this case, project radially from the front surface of the main body 21.
In this embodiment, the impeller 20 is manufactured by integrally molding the main body 21 and the blade 24. However, the main body 21 and the blade 24, which are separate members, may be fixed by a fixing means and integrated.

The main body 21 includes a hub portion 22 as a central body provided with a blade 24 and a boss portion 23 which is one end portion of the main body 21 in the axial direction. The blades 24 are rotationally symmetric portions that are rotationally symmetric with respect to the rotation center line L2. In this embodiment, the blades 24 are all the same shape and are disposed at intervals in the circumferential direction, and are hub portions in the radial direction. 22 extends to the outer peripheral portion 22a. The hub portion 22 and the boss portion 23 are rotating body shape portions having substantially the same cross-sectional shape in an arbitrary plane including the rotation center line L2. The blade 24 is a process-prohibited part that is prohibited from being corrected by the impeller 20, while the hub part 22 and the boss part 23 are process-permitting parts that are allowed to be corrected by the impeller 20.
And in this embodiment, the process target site | part in which the correction process is performed in the impeller 20 is the outer peripheral part 22a as a 1st process target site | part in the hub part 22, and the outer peripheral part 23a as a 2nd process target site | part in the boss | hub part 23. is there.

  The impeller 20 is set on a known rotational balance measuring device after the reference line 26 is drawn with ink on the back surface 22b of the hub portion 22. Then, the rotational balance measuring device measures the unbalance positions Pa and Pb where the rotational unbalance exists and the unbalance amounts Ma and Mb at the unbalance positions Pa and Pb with the reference line 26 as the reference position. .

  Referring to FIGS. 3 and 4, the work holding device 2 includes a support table 31 that rotatably supports the mounting table 30 in addition to the mounting table 30 that is a rotating table that rotates about the central axis L <b> 1. And a driving member 32 (see FIG. 1) that is controlled by the control device 4 to rotationally drive the mounting table 30. The mounting table 30 includes a central shaft 33 as a radial positioning unit that positions the impeller 20 in the radial direction centered on the central axis L1 of the mounting table 30, and an axial direction positioning unit that positions the impeller 20 in the axial direction. And a mounting surface 34 which is a support surface. The impeller 20 is mounted on the mounting surface 34 with the central shaft 33 inserted into the through hole 20a.

Referring to FIG. 3, the correction machine 1 includes a suction device 11 as a fixing unit for fixing the impeller 20 positioned on the mounting table 30 to the mounting table 30. The vacuum suction device 11 includes a pressure source 12 including a vacuum pressure source 12 a and a pressurized air source 12 b, a suction unit 13 (see also FIG. 4) provided on the mounting surface 34, and a suction unit 13. The pressure passage 14 guides the pressure of the pressure source 12, and the switching valve 15 that connects the pressure passage 14 to the vacuum pressure source 12a and the pressurized air source 12b.
The suction portion 13 is configured by an annular groove formed in the placement surface 34. The pressure passage 14 includes a main passage 14 a connected to the switching valve 15 controlled by the control device 4, and a plurality of, here three, branch passages 14 b that branch from the main passage 14 a and communicate with the adsorbing portion 13. Is done. The three branch passages 14b open to the suction portion 13 at equal intervals in the circumferential direction.

When the pressure fixing of the impeller 20 by the clamp device 8 is released, the pressure passage 14 is connected to the vacuum pressure source 12a via the switching valve 15, so that the impeller 20 positioned on the mounting table 30 is By being sucked by the action of the vacuum pressure in the suction portion 13, the impeller 20 is pressed against the placement surface 34 and is prevented from moving in the circumferential direction, the radial direction, and the axial direction, and on the placement table 30. Misalignment of the impeller 20 is prevented.
Further, after the correction process is completed and the impeller 20 is removed from the mounting table 30, the pressure passage 14 is connected to the pressurized air source 12b via the switching valve 15, so that the pressurized air is absorbed by the adsorbing unit. 13 is supplied as blow air, and chips that are processing powder on the placement table 30 including the suction portion 13 and the placement surface 34 are blown off, and the suction portion 13 and the placement surface 34 are cleaned. . Therefore, the suction device 11 also serves as an air blow device for cleaning the mounting table 30.

The sensor support unit 7 includes a sensor support 38 to which a reference position sensor 36 and a blade position sensor 37 as a processing prohibition portion position sensor are attached, and a drive member 39a (see FIG. 2) for driving the sensor support 38. Part 39. The reference position sensor 36 detects the position of the reference line 26 of the impeller 20 mounted on the mounting table 30, and the blade position sensor 37 detects the position of the blade 24 of the impeller 20 mounted on the mounting table 30. To do.
Both position sensors 36 and 37 constituted by optical sensors are driven through a sensor support 38 by a driving member 39a having an air cylinder mechanism, and are close to the impeller 20 on the mounting table 30. Moves in parallel in the horizontal direction, here in the X-axis direction, between the detection position where the reference line 26 and the blade 24 can be detected and the retracted position retracted from the detection position (indicated by a two-dot chain line in FIG. 4) Is possible.

  Referring to FIGS. 1 and 2, the processing apparatus 3 includes first and second end mills 41 and 42 as different types of processing tools that perform correction processing on the hub portion 22 and the boss portion 23 (see also FIG. 3). And a turret 40 to which a brush 43 which is a deburring tool after correction processing is attached. The end mills 41 and 42 and the brush 43 are rotationally driven by a tool drive member 3 a controlled by the control device 4. The first end mill 41 cuts the hub portion 22, and the second end mill 42 having a larger diameter than the first end mill 41 cuts the boss portion 23.

  2 to 4, the clamping device 8 includes an arm-like pressing portion 46 that presses the impeller 20 against the mounting table 30 by an abutting portion 45 that abuts the tip surface 23 a of the boss portion 23 in the axial direction from above. And a main body 47 having a drive member 47a (see FIG. 1) for moving the pressing portion 46 in parallel to the axial direction and turning around the turning center line L3. The pressing portion 46 coupled to the driving rod 47b of the driving member 47a is driven by the driving member 47a to clamp the impeller 20 against the mounting table 30 and to move upward from the clamping position after completion of the correction process. To the retreat position (indicated by a two-dot chain line in FIG. 4) that revolves around the turning center line L3 parallel to the axial direction and retreats from the mounting table 30. Is possible.

  5, 7, 8, and 9, the control device 4 includes detection means 52 (for controlling the operation of the operation switch 51 including the operation / stop switch, the drive members 32, 39 a, 47 a, and the like. For example, an encoder as a position detecting means of a member driven by the driving members 32, 39a, 47a such as a rotation position of the mounting table 30) and a detection unit 50 including the position sensors 36, 37, an operation switch 51, The detection unit 52 and the control unit 60 to which detection signals from the position sensors 36 and 37 are input. The control unit 60 is a computer including an input / output interface, a central processing unit, various control programs, and a storage device 61 that stores various maps.

  The control unit 60 includes a drive control means 62 that controls the drive members 32, 39a, and 47a of the workpiece holding device 2, the sensor support unit 7, and the clamp device 8, and a processing origin Ps that is the origin position of the mounting table 30 (see FIG. 10, reference position detection means 63 for detecting the processing reference position Pc (see FIG. 5) at the impeller 20 and blade as a processing prohibition portion position detection means for detecting the position of the blade 24 with respect to the processing origin Ps. Position detection means 64, correction position setting means 65 for setting the respective unbalance positions Pa, Pb with respect to the processing origin Ps as the respective unbalance correction positions P1, P2, and the workable region R1 over the entire circumference of the hub portion 22. Area dividing means 66 that divides the area into the process-prohibited area R2 and the hub of the impeller 20 based on the unbalance amounts Ma and Mb of the impeller 20 Machining amount calculation means 67 for calculating cutting depths Da and Db as processing amounts for 22 and boss part 23, and processing range calculation for calculating processing ranges Na and Nb in correction processing based on cutting depths Da and Db Means 68, machining amount determination means 69 for determining whether or not the cutting depths Da and Db are equal to or smaller than preset machining amount upper limit values Dac and Dbc, and each unbalance correction position P1. A region determining means 70 for determining whether or not the entire processing range Na is within one processable region R1, and the processing position of the correction processing is processed based on the result of the region determination and the result of the processing amount determination. The processing position setting means 71 that is set in the possible region R1 and the correction processing control means 72 that causes the processing device 3 to correct the processing amount at the processing position with respect to the impeller 20 are used as functions. Provided.

The unbalance positions Pa and Pb and the unbalance amounts Ma and Mb are previously measured by the rotational balance measuring instrument as described above before the impeller 20 is set in the correction machine 1.
The processable region R1 is a portion where correction processing is allowed in the hub portion 22, and in this embodiment, corresponds to a range that does not overlap the blade 24 when viewed from the axial direction, and the processing prohibition region R2 is corrected in the hub portion 22. This is a portion where machining is prohibited, and corresponds to the range in which the blade 24 is located when viewed from the axial direction.

  The correction processing control means 72 controls the processing device 3 so that each of the end mills 41 and 42 and the brush 43 (see FIG. 1) is selected, and the unbalance correction positions P1 and P2 and the cutting depths Da and Db. Based on the above, support is performed so that the correction processing at the calculated cutting depths Da and Db is performed in a state where the rotation centers of the end mills 41 and 42 are located at positions on the extended line in the radial direction at the processing position. Each drive member of the apparatus 6 and the processing apparatus 3 are controlled.

Hereinafter, with reference to FIG. 3 and FIG. 5 to FIG. 13, each process of the correction machine 1 and the rotation balance correction method for correcting the rotation balance of the impeller 20 by the correction machine 1 will be described.
<Balance correction preparation process>
After the reference line 26 is provided with respect to the impeller 20 manufactured in the manufacturing process, the unbalanced positions Pa and Pb and the unbalance amount Ma of the impeller 20 with respect to the hub portion 22 and the boss portion 23 are measured by the rotational balance measuring instrument. , Mb (see FIG. 5) are measured.
Next, the shape position data K (see FIG. 12) of the impeller 20 obtained at the stage of the manufacturing process of the impeller 20, one or more unbalance positions Pa, Pb and unbalance amounts Ma, respectively in the hub part 22 and the boss part 23, Mb is read into the control device 4 (step S1) and stored in the storage device 61. The shape position data K also includes position data in the circumferential direction regarding each blade 24.

<Processing amount calculation process>
Based on the unbalance amounts Ma and Mb at the hub portion 22 and the boss portion 23, the machining amount calculation unit 67 calculates the cutting depths Da and Db in the radial direction according to a machining amount conversion formula as a machining amount conversion unit. (See FIGS. 8 and 9) is calculated (step S2). This machining amount conversion formula is obtained by examining the correlation between the unbalance amounts Ma and Mb and the cutting depths Da and Db by experiments or simulations.
Further, the machining amount calculation unit 67 converts the machining amount based on the distribution unbalance amounts Ma1, Ma2, Mb1, and Mb2 in which the unbalance amount Ma is distributed by the machining amount distribution unit 67a in the machining amount distribution step described later. The distribution cut depths Da1, Da2, Db1, and Db2 as the distribution processing amount are calculated from the equation. Therefore, the machining amount calculation step includes a distribution machining amount calculation step for calculating the distribution cutting depths Da1, Da2, Db1, and Db2. The symbols “Mb1”, “Mb2”, “Db1”, and “Db2” are for convenience of explanation in terms of words and are not shown.

With respect to the cutting depths Da and Db, in order to reliably and easily prevent the correction processing in the processing prohibited area R2 by automation of the correction work, the processing amount upper limit value that is the upper limit value of the cutting depths Da and Db. Dac and Dbc are set. The machining amount upper limit value Dac in the hub portion 22 having the machining inhibition region R2 is set to a value different from the machining amount upper limit value Dbc for the boss portion 23, and is set to a value smaller than the machining amount upper limit value Dbc. The machining amount upper limit value Dac is appropriately set in consideration of the types of the end mills 41 and 42 (for example, the size of the diameter of the machining portion), the shape of the impeller 20 and the influence of the correction machining on the performance, and the like. As another example, both process amount upper limit values Dac and Dbc may be set to the same value.
Note that when the machining amount conversion formula is created, the machining length in the axial direction of the hub portion 22 is considered as a value determined according to the shape of the hub portion 22, and the axial line in the boss portion 23 is taken into account. The processing length in the direction is preset as a predetermined value.

<Processing range calculation process>
Based on the cutting depths Da and Db, the machining range calculation means 68 calculates the machining ranges Na and Nb (which are angles) in the circumferential direction by a machining range conversion formula as a machining range conversion means (an angle). Step S3). This conversion formula for machining range can be obtained by examining the correlation between the cutting depths Da and Db and the machining ranges Na and Nb in the end mills 41 and 42 that perform correction machining by experiment or simulation. As shown in FIGS. 8 and 9, the machining ranges Na and Nb have machining range upper limit values Nac and Nbc when the cutting depths Da and Db become machining amount upper limit values Dac and Dbc, respectively, as upper limit values. Is set.
As another example, a map may be used instead of the machining amount conversion formula and the machining range conversion formula.

<Work support process>
The impeller 20 having the reference line 26 (see FIG. 5) is placed on the placement table 30 (see FIG. 3) of the correction machine 1 while being positioned in the radial direction and the axial direction by the central shaft 33 and the placement surface 34. Is done. Next, the suction device 11 guides the vacuum pressure to the suction unit 13 through the pressure passage 14, and the impeller 20 is positioned on the mounting table 30 in the circumferential direction.

<Processing reference position setting process>
Thereafter, the sensor support unit 7 is activated, the position sensors 36 and 37 are moved from the retracted position to the detection position, and the mounting table 30 controlled and driven by the control device 4 is moved in one direction in the circumferential direction. It rotates in a predetermined circumferential direction (see FIGS. 10 and 11) and stops when the reference line 26 is detected by the reference position sensor 36.
Then, the reference position detection unit 63 calculates the position of the reference line 26 with respect to the processing origin Ps of the mounting table 30 as the processing reference position Pc based on the detection signal from the reference position sensor 36, so that the processing reference position Pc is determined. It is set (step S4).

<Blade position setting process>
Next, when the mounting table 30 is further rotated in the predetermined circumferential direction and the blade 24 first detected by the blade position sensor 37 after the reference line 26 is detected, the mounting table is detected. The rotation of 30 stops.
Then, the blade position detection unit 64 determines the blade position Pd with respect to the processing origin Ps based on the detection signal from the blade position sensor 37, so that the blade position Pd serving as a reference position for dividing the processing prohibited area R2 is obtained. It is set (step S4).

<Correction position setting process>
The correction position setting means 65 calculates unbalance correction positions P1 and P2 which are unbalance positions Pa and Pb with respect to the processing origin Ps based on the processing reference position Pc, the shape position data K, and the unbalance positions Pa and Pb. Unbalance correction positions P1, P2 (step S5) are set.

<Region division process>
Based on the shape position data K of the impeller 20, the machining reference position Pc, and the blade position Pd, the region sorting means 66 sets the position of each blade 24 with respect to the machining origin Ps, including at least the outer circumferential portion 22a and the entire circumference of the hub portion 22. To find out. As a result, the hub 22 calculates the position of the workable region R1 in the circumferential range A and the position of the work prohibited region R2 in the circumferential range B with respect to the machining origin Ps over the entire circumference ( In step S6), the hub portion 22 is alternately divided into a workable region R1 and a work prohibited region R2. As another example, only the outer peripheral portion 22a that is a processing target portion of the correction processing in the hub portion 22 may be divided into a processable region R1 and a processing prohibited region R2.
In the impeller 20, the following formula is established, where F is the number of blades 24.
F (A + B) = 360
Here, the unit of each of the circumferential ranges A and B, which is an angle, is “°”.

First, the correction processing for the hub portion 22 will be described in the case where the cutting depth Da is equal to or less than the processing amount upper limit Dac by the processing amount determination means 69 (step S7).
<Processing amount judgment process>
The machining amount determination means 69 determines whether or not the cutting depth Da is equal to or less than the machining amount upper limit value Dac (step S7). And the correction machine 1 performs correction processing with respect to the hub part 22 by a different correction method based on the result of the processing amount determination.

<Area determination process> and <Processing position setting process>
The area determination means 70 is a specific processable area R1 in which the correction target area T in which the entire processing range Na at the unbalance correction position P1 falls within each unbalance correction position P1 is one processable area R1. Modification that is a region that can be modified only by Ra, a region that includes only the specific processing prohibited region Rb that is one processing prohibited region R2, or a region that extends over the specific processing allowable region Ra and the specific processing prohibited region Rb. A determination is made as to whether the area is to be prohibited T2 (step S8).
As is apparent from the description, the modification prohibition target region T2 is a region including at least a part of the specific processing prohibition region Rb.

Further, the unit region U will be described with reference to FIG.
The unit region U is adjacent to the unit processing prohibited region Ub in the first circumferential direction, which is one direction in the circumferential direction, and the processing reference position Pc (or reference line). 26 (see FIGS. 10 and 11)) and a unit processable area Ua which is one processable area R1 located farther than the unit process prohibition area Ub.
And the outer peripheral part 22a of the impeller 20 is one side adjacent unit area adjacent to the specific unit area U0 in the first circumferential direction when the unit area U having the unbalance correction position P1 is defined as the specific unit area U0. U1 and the other side adjacent unit area | region U2 adjacent in the 2nd circumferential direction (direction opposite to the 1st circumferential direction) which is the other direction in the circumferential direction.
The circumferential range C of the unit region U is the sum of the circumferential range A and the circumferential range B. In the area determination step, the unit processable area Ua is the specific processable area Ra, and the unit process prohibited area Ub is the specific process prohibited area Rb.

Here, the relative position calculation process which an area | region determination process has is demonstrated. In the relative position calculating step, the relative position calculating means included in the region determining means 70 calculates an unbalance correction position P1 with respect to the relative reference position Qc and distribution positions Q11 and Q12 (see FIGS. 16 to 18) described later. Here, the relative reference position Qc is a circumferential end position in the second circumferential direction in the unit processing prohibited area Ub of the specific unit area U0. For example, in FIG. 14, the unbalance correction position P1 with respect to the processing reference position Pc becomes the unbalance correction position Q1 with respect to the relative reference position Qc.
Note that the symbol “P” is used for the position relative to the machining reference position Pc, and the symbol “Q” is used for the position relative to the relative reference position Qc.

And the area determination by the area determination means 70 is performed as follows, for example.
14 and 15, whether the correction target area T is the correctable target area T1 or the correction prohibition target area T2 is determined based on whether the unbalance correction position Q1 is in the unit area U. This is performed depending on whether or not the condition of the following equation is satisfied (step S8).
B + (N1 / 2) <Q1 <C- (N1 / 2) (1)
N1 is the machining range upper limit value when the cutting depth Da is the machining amount upper limit value Dac. The numerical value is an angle from the relative reference position Qc.

  The fact that the correction target area T is the correctable target area T1 means that the unbalance correction position Q1 is at a position that satisfies the expression (1). On the other hand, the fact that the correction target area T is the correction prohibition target area T2 means that the unbalance correction position Q1 is at a position that does not satisfy Expression (1).

  When the correction target region T is the correctable target region T1, the processing position setting means 71 sets the unbalance correction position Q1 as the processing position, and the correction processing by the end mill 41 (step S9) is performed.

  In addition, referring to FIGS. 16 to 18 as well, the machining position setting means 71 avoids the modification process being performed on the machining prohibited area R2 when the modification target area T is the modification prohibited area T2. In order to do this, the unbalance correction position Q1 is a plurality of (predetermined number) including the specific processable area Ra of the specific unit area U0, here, the predetermined number of distribution positions respectively set in the two processable areas R1, Here, there is a region distribution means 71a that distributes to two distribution positions Q11 and Q12.

That is, the area distribution unit 71a prohibits the modification prohibition target area T2 from only the specific process prohibited area Rb of the specific unit area U0, or the specific processable area Ra of the specific unit area U0 and the specific process prohibition of the specific unit area U0. The region straddling the region Rb, or the region straddling the specific processable region Ra of the specific unit region U0 and the specific processing prohibition region Rb of the one side adjacent unit region U1, or the specific processing prohibition region of the specific unit region U0 The unbalance correction position Q1 is an allocation position in two processable areas R1 including the processable area R1 of the specific unit area U0 when the area spans the specific processable area Ra of Rb and the other side adjacent unit area U2. Assign to Q11 and Q12.
Then, the processing position setting means 71 sets the distribution positions Q11 and Q12 as processing positions, and correction processing by the end mill 41 is performed.

This will be described in detail below.
Referring to FIGS. 7, 12, 13, and 16, the modification prohibition target region T2 is only the specific processing prohibited region Rb of the specific unit region U0, or the specific processing prohibited region Rb of the specific unit region U0 and the other As a case where the side adjacent unit region U2 extends over the specific processable region Ra, the unbalance correction position Q1 does not satisfy Expression (1), and
Q1 <(B / 2) (2)
(Steps S10 and S11) may be satisfied.
That is, this is a case where the unbalance correction position Q1 is in a region on the relative reference position Qc side (or the second circumferential direction side) in the circumferential direction with respect to the central position R2m of the specific processing prohibited region Rb in the circumferential direction. In this case, the region distribution means 71a determines the unbalance correction position Q1 as a unit in the unit processable region Ua in the specific unit region U0 and the other side adjacent unit region U2 adjacent to the specific unit region U0 in the second circumferential direction. As the first and second distribution positions Q11 and Q12 (or distribution positions P11 and P12) in the processable area Ua (which may be the specific processable area Ra), the processable area R1 is second order in the circumferential direction. They are distributed to the central positions R1m1 and R1m2, which are positions to be divided (step S11).

The distribution amount calculation step included in the machining amount calculation step will be described. In the distribution amount calculation step, the processing amount distribution unit 67a included in the processing amount calculation unit 67 is expressed by the following equation.
Ma1 = (A / 2 + Q1) / C (3)
Ma2 = (B + A / 2−Q1) / C (4)
Thus, the unbalance amount Ma (see FIG. 5) is weighted according to the ratio of the angle between the unbalance correction position Q1 and the distribution positions Q11 and Q12, and the distribution unbalance amount Ma1 at the distribution position Q11, The distribution unbalance amounts Ma1 and Ma2 are calculated for each processable region R1 so as to be distributed to the distribution unbalance amount Ma2 at the distribution position Q12 (step S11).
Next, the machining amount calculating means 67 calculates the sorting machining amount based on the machining amount conversion formula based on the sorting imbalance amounts Ma1 and Ma2. Then, the machining position setting means 71 sets both distribution positions Q11 and Q12 as machining positions in the machining area R1, and correction machining (step S9) is performed.

Referring to FIGS. 7, 12, 13, and 17, the modification prohibition target region T2 is only the specific processing prohibited region Rb of the specific unit region U0, or the specific processing prohibited region Rb and the specific processing of the specific unit region U0. As a case where the region extends over the processable region Ra, the unbalance correction position Q1 does not satisfy the equation (1), and the following equation:
(B / 2) ≦ Q1 ≦ B + (A / 2) (5)
(Steps S12 and S13) may be satisfied.
That is, this is a case where the unbalance correction position Q1 is in a region from the central position R2m that bisects the specific processing prohibited region Rb in the circumferential direction to the central position R1m of the specific processing possible region Ra. In this case, the area distribution means 71a determines the unbalance correction position Q1 as a unit in the unit processable area Ua in the specific unit area U0 (may be the specific processable area Ra) and the unit in the other adjacent unit area U2. It distributes to the center positions R1m1, R1m2 as the first and second distribution positions Q11, Q12 in the processable area Ua (step S13).

Then, the processing amount distribution unit 67a weights the unbalance amount Ma according to the ratio of the angle between the unbalance correction position Q1 and the two distribution positions Q11 and Q12 according to the expressions (3) and (4). Then, a distribution unbalance amount Ma1 at the distribution position Q11 and a distribution unbalance amount Ma2 at the distribution position Q12 are calculated (step S13).
Next, the machining amount calculation unit 67 calculates the distribution machining amount by a machining amount conversion formula based on the distribution unbalance amount. Then, the machining position setting means 71 sets both distribution positions Q11 and Q12 as machining positions in the machining area R1, and correction machining (step S9) is performed.

Referring to FIGS. 7, 12, 13, and 18, the modification prohibition target area T <b> 2 is an area that extends over the specific processable area Ra of the specific unit area U <b> 0 and the specific process prohibition area Rb of the one side adjacent unit area U <b> 1. In some cases, the unbalance correction position Q1 does not satisfy Equation (1), and
B + (A / 2) <Q1 (6)
(Steps S12 and S14) may be satisfied.
That is, this is a case where the unbalance correction position Q1 is in a region farther from the relative reference position Qc in the first circumferential direction than the central position R1m of the specific processable region Ra. In this case, the area allocating means 71a sets the unbalance correction position Q1 to the central position R1m1 as the first allocating position Q11 in the unit processable area Ua (processable area R1) of the one-side adjacent unit area U1 and the specific unit area. The unit processable area Ua (specific processable area Ra) at U0 is distributed to the center position R1m2 as the second distribution position Q12 (step S14).

And the processing amount distribution means 67a is the following formula:
Ma1 = (Q1- (B + A / 2)) / C (7)
Ma2 = (C + B + A / 2−Q1) / C (8)
Thus, the unbalance amount Ma is weighted according to the ratio of the angle between the unbalance correction position Q1 and the distribution positions Q11, Q12, and the distribution unbalance amount Ma1 at the distribution position Q11 and the distribution position Q12 The distribution unbalance amounts Ma1 and Ma2 are calculated so as to be distributed to the distribution unbalance amount Ma2 (step S14).
Next, the machining amount calculation unit 67 calculates the distribution machining amount by a machining amount conversion formula based on the distribution unbalance amount. Then, the machining position setting means 71 sets both distribution positions Q11 and Q12 as machining positions in the machining area R1, and correction machining (step S9) is performed.

<Correcting process>
3 and 8, the end mill 41 of the processing device 3 is controlled by the control device 4 to correct the processing amount at the processing position in the processable region R1 of the hub portion 22 (step S9).
After the correction process, in the deburring process of the part where the correction process is performed at the processing position, the brush 43 (see FIG. 1) is selected, and the brush 43 removes the burr.

Referring to FIGS. 7, 8, 12, 13, and 16 to 18, when cutting depth Da exceeds a preset machining amount upper limit value Dac in step S 7 by machining amount determination means 69. The case where it is determined will be described.
When the cutting depth Da exceeds a preset machining amount upper limit value Dac (step S7), the unbalance amount Ma exceeds a correctable value (for example, a value that is at least twice the machining amount upper limit value Dac). In the case of (Step S15), the correction process is terminated because the correction is impossible.
If the unbalance amount Ma is less than or equal to the correctable value (step S15), the region determination unit 70a does not perform the region determination, and the region distribution unit 71a performs the unbalance correction position in the specific unit region U0 in step S16. In accordance with Q1, the central position R1m1 as the first and second distribution positions Q11, Q12 is divided into a plurality of, in this case, two processable areas R1, in the same manner as in the processing in steps S11, S13, S14. , R1m2 is set.
Next, the processing amount distribution unit 67a calculates the distribution unbalance amounts Ma1 and Ma2 at the respective distribution positions Q11 and Q12 from the unbalance amount Ma, and the processing amount calculation unit 67 performs each distribution unbalance in the distribution processing amount calculation step. The distribution cut depths Da1 and Da2 are calculated based on the balance amounts Ma1 and Ma2.
The machining amount determination means 69 determines whether or not the distribution cut depths Da1 and Da2 are equal to or less than the machining amount upper limit value Dac (step S17). The distribution positions Q11 and Q12 are set as processing positions.

In step S17, when the machining amount determination unit 69 determines that the distribution cut depths Da1 and Da2 exceed the machining amount upper limit value Dac, the excess machining amount distribution unit 67b included in the machining amount calculation unit 67 performs processing. Among the distribution unbalance amounts Ma1 and Ma2 corresponding to the distribution processing amount exceeding the amount upper limit value Dac, the excess unbalance amount exceeding the unbalance amount upper limit value corresponding to the processing amount upper limit value Dac is set on both sides in the circumferential direction. Are divided into two equal parts in the closest processable region R1 (step S18). Then, after the distribution, when the distribution cutting depth at the distribution positions Q11 and Q12 is equal to or less than the machining amount upper limit value Dac, the distribution positions Q11 and Q12 are set as the machining positions.
Further, when the distribution cut depth after the excess unbalance amount is distributed exceeds the machining amount upper limit value Dac (step S19), the correction operation is terminated as being uncorrectable.

After the correction work at all the unbalance correction positions P <b> 1 in the hub portion 22 is completed, the correction processing for the boss portion 23 is performed.
7, 9, and 19, when it is determined by the machining amount determination means 69 that the cutting depth Db is equal to or less than the boss machining amount upper limit value Dbc (step S <b> 31), the machining position setting means 71 is unloaded. The balance correction position P2 is set as a processing position, and the end mill 42 of the processing device 3 is controlled by the control device 4 to perform correction processing on the outer peripheral portion 23a of the boss portion 23 (step S32).

  When it is determined by the machining amount determination means 69 that the cutting depth Db exceeds the machining amount upper limit value Dbc (step S31), the machining amount calculation means 67 uses the unbalance amount Mb as the first and second distribution unbalance amounts. After being divided into Mb1 and Mb2 and divided into two equal parts, here, each distribution unbalance amount Mb1 and Mb2 is assigned to each distribution unbalance amount Mb1 and Mb2 according to the machining amount conversion formula for the boss portion 23. The distribution process for the boss portion 23 for calculating the cutting depths Db1 and Db2 is performed by the distribution means (step S33). Next, the processing range calculation means 68 calculates each distribution processing range based on each distribution cut depth Db1, Db2 by the conversion formula for processing range for the boss portion 23, and the processing position setting means 71 performs each distribution processing. Based on the range, the machining position is set at a position where the two divided machining ranges do not overlap in the circumferential direction and at a position sandwiching the unbalance correction position Pb in the circumferential direction (step S33).

And the correction process by the end mill 42 (refer FIG. 3, FIG. 9) is performed (step S32), and the deburring process by the brush 43 (refer FIG. 1) is performed after that.
Thereafter, the pressing portion 46 of the clamp device 8 (see FIG. 3) moves to the retracted position (indicated by a two-dot chain line in FIG. 4).

Next, operations and effects of the embodiment configured as described above will be described.
In the rotation balance correction method for correcting the rotation balance of the impeller 20 by the correction machine 1, in the machining amount calculation step, the machining amount calculation unit 67 calculates the cutting depth Da in the correction machining for the impeller 20 based on the unbalance amount Ma. In the machining range calculation step, the machining range calculation unit 68 calculates the machining range Na in the correction machining based on the cutting depth Da, and in the region division step, the region division unit 66 processes the outer peripheral portion 22a of the impeller 20. The region to be corrected is divided into a possible region R1 and a processing prohibited region R2 in the circumferential direction. In the region determination step, the region determination means 70 determines a correction target region T in which the entire processing range Na at the unbalance correction position Q1 (P1) is contained. The modification target area T1 that is only the processable area R1 or the area that includes the process prohibition area R2 is prohibited. In the machining position setting process, the machining position setting means 71 sets the machining position to the machining area R1 based on the result of the area judgment, and in the correction machining process, the machining apparatus 3 determines the target area T2. The machining amount is corrected at the machining position with respect to the impeller 20, and the machining position setting step distributes the unbalance correction position Q1 to the sorting positions Q11 and Q12 respectively set in the workable area R1 by the area sorting means 71a. When the correction target area T is the correctable target area T1, the processing position setting means 71 sets the unbalance correction position Q1 as the processing position in the specific processable area Ra when the correction target area T is the correctable target area T1. Is the correction prohibition target area T2, the machining position setting means 71 sets the sorting positions Q11 and Q12 as machining positions. To.

  Thereby, since the setting of the unbalance correction position Q1 in the impeller 20 and the division and determination of the workable area R1 and the work prohibited area R2 are performed with respect to the processing origin Ps of the mounting table 30, the rotation balance correction machine 1 This makes it easy to make corrections. Further, the unbalance amount Ma and the unbalance correction position Q1 are set to a plurality of workable regions R1 according to the cutting depth Da and the processing range Na calculated based on the unbalance amount Ma at the unbalance position Pa in the impeller 20. The distribution area distribution means 71a reliably eliminates the correction process in the process prohibition area R2 and determines the processable area R1 in which the correction process is performed, so that the efficiency of the correction process is improved.

When the modification prohibition target region T2 is a region straddling the unit processable region Ua of the specific unit region U0 and the unit processing prohibition region Ub of the one-side adjacent unit region U1, the processable region R1 in which the processing position is set is The unit processable area Ua of the specific unit area U0 and the unit processable area Ua of the one-side unit area U1.
Thus, when the correction processing at the unbalance correction position Q1 extends to the one-side adjacent unit region U1, the processing position is closest to the unbalance correction position Q1 except for the unit processable region Ua of the specific unit region U0. Since it is assigned to the unit processable area Ua of the side adjacent unit area U1, it is possible to reliably perform the correction process in the process prohibition area R2 while suppressing a decrease in the rotational balance correction effect due to the allocation of the unbalance correction position Q1. And it can be easily prevented.

The region where the modification prohibition target region T2 is only the unit processing prohibition region Ub of the specific unit region U0, or the region straddling the unit processing prohibition region Ua of the specific unit region U0 and the unit processing prohibition region Ub of the specific unit region U0, or the specific unit The processable area R1 in which the process position is set when the area extends over the unit process prohibition area Ub of the area U0 and the unit processable area Ua of the other adjacent unit area U2 is the unit processable area of the specific unit area U0 Ua and the unit processable area Ua of the other side adjacent unit area U2.
As a result, the machining position is assigned to the unit machining possible area Ua of the other adjacent unit area U2 other than the unit machining possible area Ua of the specific unit area U0 and closest to the unbalance correction position Q1, so that the unbalance correction position Q1 is Correcting processing in the processing prohibition region R2 can be reliably and easily prevented while suppressing a decrease in the effect of correcting the rotation balance due to the distribution.

In the machining amount calculation step, after the unbalance amount Ma is distributed to the distribution unbalance amounts Ma1 and Ma2 at the distribution positions Q11 and Q12 by the processing amount distribution unit, each distribution unbalance amount Ma1 and Ma2 is performed by the processing amount calculation unit 67. Based on the above, the distribution cut depths Da1 and Da2 are calculated, and correction processing is performed at the distribution cut depths Da1 and Da2.
As a result, when the processing position is distributed and the distribution cut depths Da1 and Da2 are calculated from the unbalance amount Ma, the cutting depth Da based on the unbalance amount Ma is obtained compared to the case where the cut depth Da is used. The accuracy of the distribution cut depths Da1 and Da2 is improved, and the correction accuracy of the rotation balance correction is improved.

In the machining amount calculation step, after the unbalance amount Ma is distributed to the distribution unbalance amounts Ma1 and Ma2 at the distribution positions Q11 and Q12, the distribution cut depths Da1 and Da2 are set based on the distribution unbalance amounts Ma1 and Ma2. The processing position setting unit 71 sets the processing position in the processing region R1 based on the processing amount determination result by the processing amount determination unit 69 in the processing position setting step. When the cutting depths Da1 and Da2 are equal to or less than the machining amount upper limit value Dac, and the correction target area T is the correctable target area T1, the unbalance correction position Q1 is set as the machining position in the machining position setting step. When the correction target region T is set to R1 and the correction target region T is the correction prohibition target region T2, the region distribution step is performed and the processing position In the setting process, when the distribution positions Q11 and Q12 are set as machining positions, and the distribution cutting depths Da1 and Da2 exceed the machining amount upper limit value Dac, the area determination process is performed without performing the area determination process. Later, a distribution processing amount calculation step is performed, and in the correction processing step, the processing device 3 performs correction processing at the distribution cut depths Da1 and Da2.
Even when the distribution cut depths Da1 and Da2 based on the unbalance amount Ma exceed the machining amount upper limit value Dac, the unbalance correction position Q1 and the unbalance amount Ma are distributed, so that one unbalance correction position Q1 is obtained. The performance degradation of the impeller 20 caused by the large cutting depth Da can be suppressed, and the correction work efficiency can be improved by easily avoiding the correction work in the work prohibited area R2.

  Since the distribution positions Q11 and Q12 are the center positions R1m1 and R1m2 in the circumferential direction of the workable region R1, it is easy to set the distribution positions Q11 and Q12 while suppressing a decrease in the effect of correcting the rotational balance due to the distribution. In addition, even when the machining range Na is large, that is, when the distribution cut depths Da1 and Da2 are large, it is possible to easily and reliably prevent the correction processing from reaching the processing prohibited area R2, thereby improving the efficiency of the correction work. Improvement is possible.

The correction machine 1 includes a suction device 11 that fixes the impeller 20 to the mounting table 30 by vacuum pressure. The mounting table 30 is rotatable, and the suction device 11 fixes the impeller 20 when the mounting table 30 rotates. To do.
Thereby, when the mounting table 30 is rotated for setting the processing reference position Pc or for correction processing at the processing position, it is possible to reliably prevent the displacement of the impeller 20, thereby improving the accuracy of correction processing and rotating The balance correction effect is improved.

Hereinafter, an embodiment in which a part of the configuration of the above-described embodiment is changed will be described with respect to the changed configuration.
The relative reference position Qc may not be the boundary position between the processable area R1 and the process prohibition area R2.
In a specific case, such as when the unbalance positions Pa and Pb are measured by a measuring instrument with respect to the impeller 20 positioned on the mounting table 30 at the same position as that at the time of correction processing, the unsetting position is used in the position setting step. The balance positions Pa and Pb may be set as the unbalance correction positions P1 and P2 as they are.

At least one of the mounting table 30 and the processing device 3 may be movable in the circumferential direction with respect to the impeller 20 positioned on the mounting table 30.
The blade 24 may be configured by a plurality of types of blades 24 having different shapes, and the plurality of types of blades 24 may be rotationally symmetrical with respect to the rotation center line L2. In this case, by setting the positional relationship between the reference line 26 and the specific blade detected by the blade position sensor 37, the region segmentation process is facilitated.
When the shape of the processing prohibition portion is different or when the interval between the processing prohibition portions adjacent in the circumferential direction is different in the circumferential direction, one processing prohibition portion can be set as the specific processing prohibition portion with respect to the reference line 26. it can. In this case, the processing prohibition portion position of the specific processing prohibition portion is determined by the processing prohibition portion position detection means, and the region sorting means 66 is loaded based on the processing prohibition portion position, the processing reference position Pc, and the shape position data K. The position of each process prohibition portion with respect to the process origin Ps of the table 30 is determined, and the processable area R1 and the process prohibition area R2 are determined.
The order of the correction processing is the hub portion 22 and then the boss portion 23 in the embodiment, but may be the boss portion 23 and then the hub portion 22.
The machining range calculation means 68 calculates the machining range Na from the cutting depths Da and Db based on the distribution unbalance amounts Ma1 and Ma2 at the distribution positions Q11 and Q12, and calculates the machining range Na based on the machining range Na. Thus, the first and second distribution positions Q11 and Q12 may be set to positions other than the center positions R1m1 and R1m2 on condition that the entire processing range Na is within the processable region R1.
The rotating component may be a compression rotor including the impeller 20, a turbine rotor, an electric motor rotor, a wheel of a wheel, or the like.

DESCRIPTION OF SYMBOLS 1 Rotation balance correction machine 3 Processing apparatus 4 Control apparatus 11 Suction apparatus 20 Impeller (rotary part)
26 Reference line (reference position mark)
30 Placement table (work support member)
63 Reference position detection means 65 Correction position setting means 66 Region sorting means 67 Processing amount calculation means 68 Processing range calculation means 69 Processing amount determination means 70 Region determination means 71 Processing position setting means 71a Area distribution means 72 Correction processing control means Pa, Pb Unbalance position Ma, Mb Unbalance amount Ps Processing origin Pc Processing reference position P1, Q1 Unbalance correction position Q11, Q12 Distribution position R1m, R1m1, R1m2, R2m Center position Da, Db Cutting depth (processing amount)
Dac Machining amount upper limit Na Machining range R1 Machinable area R2 Machining prohibited area Ra Specific machinable area Rb Specific machining prohibited area T Correction target area T1 Correction target area T2 Modification prohibition target area U Unit area Ua Unit Machinable area Ub Unit Processing prohibited area

Claims (8)

A rotation balance correction method for correcting the rotation balance of the rotating component by a rotation balance correcting machine that performs correction processing to remove a part of the rotating component,
A machining amount calculation step in which a machining amount in the correction machining for the rotating part having a reference position mark and an unbalance position and an unbalance amount measured is calculated based on the unbalance amount;
A machining range calculation step in which a machining range in the correction machining is calculated based on the machining amount;
A workpiece support step in which the rotating component is positioned on a workpiece support member of the rotation balance corrector;
A correction position setting step in which the unbalance position is set as an unbalance correction position with respect to the processing origin of the workpiece support member;
A region in which the portion to be corrected in the rotating part is divided in a circumferential direction into a processable region in which the correction processing is allowed and a processing prohibited region in which the correction processing is prohibited with respect to the processing origin. A division process;
The correction target area in which the entire processing range at each unbalance correction position is within one correction target area that is only the specific processable area that is one of the processable areas, or one An area determination step in which an area determination of whether or not a modification prohibition target area is an area including a specific process prohibition area that is the processing prohibition area; and
A machining position setting step in which the machining position of the correction machining is set in the workable area based on the result of the area determination;
A correction processing step in which the correction processing of the processing amount is performed at the processing position for the rotating component;
Including
The processing position setting step includes an area distribution step in which the unbalance correction position is distributed to the predetermined number of distribution positions that are respectively set to a predetermined number of the processable areas.
When the correction target area is the correctable target area, in the processing position setting step, the unbalance correction position is set as the processing position in the specific processing possible area,
When the correction target region is the correction prohibition target region, the region distribution step is performed, and the distribution position is set as the processing position in the processing position setting step. How to fix. One unit processing prohibited area that is one of the processing prohibited areas and a unit processing prohibited area that is adjacent to the unit processing prohibited area in a first circumferential direction that is one direction in the circumferential direction and that is farther from the reference position mark than the unit processing prohibited area. The unit processable area that is one of the processable areas that are positioned constitutes one unit area,
The rotating component has a specific unit region that is the unit region where the unbalance correction position is located, and a one-side adjacent unit region that is the unit region adjacent to the specific unit region in the first circumferential direction,
When the modification prohibition target area is an area that spans the unit processing prohibition area of the one side adjacent unit area as the unit processable area of the specific unit area and the specific processing prohibition area, the predetermined number of the processing The rotation balance correction method according to claim 1, wherein the possible areas are the unit processable area of the specific unit area and the unit processable area of the one-side adjacent unit area. One unit processing prohibited area that is one of the processing prohibited areas and a unit processing prohibited area that is adjacent to the unit processing prohibited area in a first circumferential direction that is one direction in the circumferential direction and that is farther from the reference position mark than the unit processing prohibited area. When the unit processable area which is one of the processable areas located constitutes one unit area,
The rotating component is adjacent to the specific unit region that is the unit region where the unbalance correction position is located and the unit region adjacent to the specific unit region in the second circumferential direction that is the other direction in the circumferential direction. Unit area,
The modification prohibition target area is an area including only the unit processing prohibited area of the specific unit area as the specific processing prohibited area, or a unit processing prohibition of the specific unit area as a unit processable area and a specific processing prohibited area of the specific unit area. The predetermined number of the processable areas when the area spans an area, or the area that spans the unit process prohibition area of the specific unit area and the unit processable area of the other adjacent unit area as the specific process prohibition area, The rotation balance correction method according to claim 1, wherein the unit processable area of the specific unit area and the unit processable area of the other adjacent unit area. In the processing amount calculation step, after the unbalance amount is distributed to the predetermined number of distribution unbalance amounts at the predetermined number of distribution positions, a distribution processing amount is calculated based on each distribution unbalance amount. Distribution process amount calculation step
The rotation balance correction method according to any one of claims 1 to 3, wherein the correction processing is performed with the distribution processing amount in the correction processing step. A processing amount determination step in which a processing amount determination is performed as to whether or not the processing amount is equal to or less than a processing amount upper limit value,
In the processing amount calculation step, after the unbalance amount is distributed to the predetermined number of distribution unbalance amounts at the predetermined number of distribution positions, a distribution processing amount is calculated based on each distribution unbalance amount. Distribution process amount calculation step
In the machining position setting step, the machining position is set in the workable area based on a result of the machining amount determination,
When the machining amount is equal to or less than the machining amount upper limit value and the correction target area is the correctable target area, in the machining position setting step, the unbalance correction position can be the specific machining as the machining position. When the correction target area is the correction prohibition target area, the area distribution step is performed, and in the processing position setting step, the distribution position is set as the processing position,
When the processing amount exceeds the processing amount upper limit value, the distribution processing amount calculation step is performed after the region distribution step is performed without performing the region determination step,
5. The rotation balance correction method according to claim 1, wherein the correction processing is performed with the distribution processing amount in the correction processing step. 6.   The rotation balance correction method according to claim 1, wherein the distribution position is a center position in a circumferential direction of the predetermined number of the workable regions. A rotation that includes a workpiece support member on which a rotating component having a reference position mark is positioned, and corrects the rotation balance of the rotating component by performing a correction process that removes a part of the rotating component positioned on the workpiece support member. In the balance corrector,
A machining amount calculating means for calculating a machining amount for the rotating component based on an unbalance amount of the rotating component measured in advance;
A machining range calculating means for calculating a machining range in the correction machining based on the machining amount;
Reference position detection means for detecting the position of the reference position mark in the rotating component as a processing reference position;
An area dividing means for dividing the rotating part into a processable area where the correction process is allowed and a process prohibited area where the correction process is prohibited, based on the processing reference position, over the entire circumference;
Correction position setting means for setting an unbalance position of the rotating part measured in advance as an unbalance correction position based on the processing reference position;
The correction target area in which the entire processing range at each unbalance correction position is within one correction target area that is only the specific processable area that is one of the processable areas, or 1 A region determination means for performing region determination of whether or not a correction prohibition target region is a region including the two processing prohibited regions;
Processing position setting means for setting the processing position of the correction processing in the processable region based on the result of the region determination;
A processing device for performing the correction processing on the rotating component;
A control device for causing the processing device to perform the correction processing of the processing amount at the processing position on the rotating component;
With
The processing position setting means has area distribution means for distributing the unbalance correction position to the predetermined number of distribution positions respectively set to a plurality of the predetermined number of workable areas,
When the correction target region is the correctable target region, the processing position setting means sets the unbalance correction position as the processing position in the specific processing possible region,
When the correction target area is the correction prohibition target area, the predetermined number of the distribution positions are set as the processing positions. A suction device for fixing the rotating component to the work support member by vacuum pressure;
The workpiece support member is rotatable;
The rotation balance correcting machine according to claim 7, wherein the suction device fixes the rotating component when the workpiece support member rotates.

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