CN103790648B - The aeroengine rotor assembly method optimized based on multi-part concentricity and device - Google Patents
The aeroengine rotor assembly method optimized based on multi-part concentricity and device Download PDFInfo
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- CN103790648B CN103790648B CN201410052188.4A CN201410052188A CN103790648B CN 103790648 B CN103790648 B CN 103790648B CN 201410052188 A CN201410052188 A CN 201410052188A CN 103790648 B CN103790648 B CN 103790648B
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Abstract
Mechanical assembly technique is belonged to based on the aeroengine rotor assembly method of multi-part concentricity optimization and device.Its method of measurement and device are based on air supporting rotary axis system determination rotative benchmark; According to the angular positioning of photoelectric encoder determination turntable; Based on four gauge head measuring devices, extract the radial error of rotor radial mating face and the tilt error of axial mating face, obtaining this rotor affects weights to rotor coaxial degree after assembling; Respectively measure assembling needed for whole rotors, obtain each rotor on assembling after rotor coaxial degree affect weights; The weights of each rotor are carried out vector optimization, obtains the angle of assembling of each rotor.The present invention effectively can solve the low problem of coaxality after aeroengine rotor assembling, after there is rotor assembling coaxality high, reduce vibration, be easy to install, flexibility ratio is high, the feature of improving engine performance.
Description
Technical field
The invention belongs to mechanical assembly technique, relate generally to a kind of aeroengine rotor assembly method based on the optimization of multi-part concentricity and device.
Background technique
Aeroengine assembling is the final tache in aeroengine manufacture process, is also one of of paramount importance manufacture link.Under existing Aeroengine Design scheme and processing technique level conditions, the quality of assembling and working efficiency have material impact for the quality of motor, performance and manufacturing efficiency.So the coaxality of installing rear rotor will be improved in assembly process as much as possible, and then reduce the vibration of aeroengine, improve the performance of aeroengine.But, in reality is produced, the assembling of aeroengine is complete hand assembled, height and operating experience and the technical merit of whether stablizing the assembler that places one's entire reliance upon of assembly precision, lack a kind of method that high speed effectively instructs aeroengine rotor to assemble, and then raising efficiency of assembling, reduce aeroplane engine machine vibration, improve the performance of aeroengine.
Along with aeroengine assembling measuring technology more and more comes into one's own, aeroengine assembling measuring technology more and more comes into one's own, and becomes the focus of research.Increasing researcher has carried out deep discussion for aeroengine rotor, and Rools-Royce proposes a kind of scheme (System and method forimproving the damage tolerance of a rotor assembly.European Patent Publication No: EP2525049A2), mainly through each sub-test system being obtained the stress signal of rotor each position, the signal that each subtense angle gathers is analyzed by main system, damage the impact of Parameter analysis on assembling from the appearance of each rotor, and then improve the assembling of aeroengine rotor.The method Problems existing is: the impact of geometric sense on assembling, on the impact of assembling, cannot be improved in the geometric sense aspect not analyzing rotor.
Xi'an Communications University proposes a kind of method for testing assembly performance of rotor of aircraft engine (a kind of method for testing assembly performance of rotor of aircraft engine.Publication number: CN101799354A).First the method adopts vibration exciter exciting aeroengine rotor, utilizes vibration transducer and signal acquiring system software to obtain the impulse response signal of the aeroengine rotor of a multicarrier coupling; Then adopt dual-tree complex wavelet transform method to analyze to the impulse response signal of the aeroengine rotor of obtained multicarrier coupling, obtain the impulse response subsignal of the aeroengine rotor of eight single carriers; Finally average assembly performance index is extracted to the impulse response subsignal of the aeroengine rotor of obtained eight single carriers, if the average assembly performance desired value of gained is more than or equal to 10, then judge that the assembling of this aeroengine rotor is qualified, if the mean value of gained is less than 10, then judge defective, need to do over again rebuilding.The method Problems existing is: do not instruct aeroengine rotor assembling.
Luoxin Precision Parts (shanghai) Co., Ltd. proposes a kind of coaxality of measuring and equips (a kind of axiality measuring apparatus.Publication number: CN202024752U).This device comprises the transmission main shaft that a pair of being arranged on apparatus subject is rotated by lazy-tongs synchronization control, and this transmission main shaft the inner respectively correspondence is provided with measuring head and positioning reference plane; Above position, there is transducer probe assembly between described measuring head.The coaxality that it mainly solves existing precision parts, the measurement of beating.The method Problems existing is: the coaxality only measuring measured piece, does not solve the problem of the rear coaxality difference of rotor assembling.
Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City proposes a kind of gap measuring method (non-contact measuring method for leaf apex radial clearance of engine rotor.Publication number: CN102175135A).The method adopts capacitance measurement technology, and measurement procedure is as follows, first assembles measuring system, calibration sensor, determines the relation between blade tip radial clearance and voltage, then is fixed on blade by sensor, finally measures engine rotor blade tip radial clearance.The method Problems existing is: do not consider that in rotor assembly process, axial attachment face is on the impact after rotor assembling.
The tested object of aeroengine assembling is stators and rotor, and under the condition that component processing precision meets the demands, final inspection is by installing the Determines after coordinating, and the index of evaluation mainly assembles the coaxality parameter of rear rotor.Engine revolution produces high pressure, and its rotor is made up of multiple single part combined, ideal during the dead in line of the turning axle of each parts and whole motor.High Rotation Speed speed during high-performance enginer work is greater than 10000rpm, single part axis or radial deflection will inevitably cause turbine disk misalignment engine rotation axis, very large centrifugal force can be produced in such a situa-tion, cause the imbalance of rotor turns, cause engine luggine, thus ensure that the coaxality after the assembling of each parts is the Focal point and difficult point installed.
A Model Mounting not using coaxality optimization method, the axis of all parts and radial due to machining accuracy restriction existence beat, eccentric, inclination equal error.If directly assembled randomly, just may form the bending situation being similar to " banana ", namely upper component have accumulated bias or the tilt error of all parts below, and beat overall after causing assembling is huge with inclination, cause the non-constant of engine rotor coaxality, be difficult to meet usage requirement.
At present, domestic engine assembly still adopts traditional assembly method, tests manually based on dial indicator.According to assembled in sequence motor from top to bottom, measure after assembling parts, guarantee that the entirety after at every turn increasing parts can meet the threshold condition of coaxality, and then another parts are upwards installed.Each all using previous parts as benchmark, the coaxality of final requirement entirety within the specific limits.The time of this method at substantial, and the possibility of doing over again is large, affects very much efficiency and the one-time success rate of installation, usually once successfully assembles needs 4 to 5 days.And because be not optimum assembling position, usually need dismounting 4 to 5 times, also need workman to assemble with rich experiences, each assembling all needs experience hot working and cold working.So current aerospace engine assembly method installation efficiency is low, not easily install, and after assembling, coaxality is poor, affects engine performance.
Summary of the invention
For the deficiency that above-mentioned prior art exists, a kind of aeroengine rotor assembly method based on the optimization of multi-part concentricity and device are proposed, the object assemble the low problem of rear coaxality to solve aeroengine rotor, after reaching rotor assembling, coaxality is high, reduction is vibrated, be easy to installation, flexibility ratio is high, improved engine performance.
The object of the present invention is achieved like this:
A kind of structure of the aeroengine rotor assembly apparatus based on the optimization of multi-part concentricity is that air floating shaft system is nested on base central position, described air floating shaft system is by air-floating main shaft, worktable, platen on air-bearing shafts, air-bearing shafts pressing disc, photoelectric encoder, photoelectric encoder code-disc, motor stator and rotor are formed, described worktable to be configured on air-bearing shafts on platen upper end portion, on air-bearing shafts, platen is configured on air-floating main shaft upper end portion, air-floating main shaft is configured on air-bearing shafts pressing disc upper end portion, photoelectric encoder code-disc is nested on air-bearing shafts pressing disc outer shroud, photoelectric encoder fits over base central position lower inside admittedly, and it is outside to be positioned at photoelectric encoder code-disc, motor stator fits over base central position lower inside admittedly, and be positioned at photoelectric encoder bottom and rotor outside, rotor is nested on air-bearing shafts pressing disc outer shroud, and be positioned at photoelectric encoder code-disc bottom, aligning adjusts the worktable that inclines to be configured on air floating shaft system central position, delta air chuck is configured in aligning tune and inclines on worktable central position, left movement guide rail and right motion guide rail are symmetrically distributed on the pedestal of air floating shaft system both sides, left column is arranged on left movement guide rail, and right column is arranged on right motion guide rail, removablely successively from top to bottom on left column be adjustably set with upper left mast link and lower-left mast link, the horizontal measuring staff horizontal nest in upper left is on the mast link of upper left, the horizontal measuring staff of upper sensor adaptor and upper left is connected, and upper axial current vortex sensor and upper sensor adaptor are connected, the horizontal measuring staff horizontal nest in lower-left is on the mast link of lower-left, and the horizontal measuring staff of lower sensor adaptor and lower-left is connected, and lower axial current vortex sensor and lower sensor adaptor are connected, removablely successively from top to bottom on right column be adjustably set with upper right mast link and bottom right mast link, the horizontal measuring staff horizontal nest of upper right is on upper right mast link, and upper radial current vortex sensor is connected with upper right transverse direction measuring staff, the horizontal measuring staff horizontal nest in bottom right is on the mast link of bottom right, and the horizontal measuring staff of lower radial current vortex sensor and bottom right is connected.
Compared with prior art, feature of the present invention is:
The present invention can obtain the coaxality weights of each rotor by the concentricity and perpendicularity measuring each rotor, again the coaxality weights of each rotor are carried out vector optimization, just can obtain instructing setting angle, save 40% installation time and expense, the once mounting success rate of 98%, measurable installation progress, improve engine stabilization, reduce engine luggine, save motor fuel consumption, reduce CO
2discharge, reduces engine noise and pollutes.
Accompanying drawing illustrates:
Fig. 1 is four gauge head measuring device structural representations
Fig. 2 is floating shaft structure schematic diagram
Piece number in figure: 1-pedestal, 2-air floating shaft system, 2a-air-floating main shaft, 2b-worktable, platen on 2c-air-bearing shafts, 2d-air-bearing shafts pressing disc, 2e-photoelectric encoder, 2f-photoelectric encoder code-disc, 2g-motor stator, 2h-rotor, 3-aligning adjusts the worktable that inclines, 4-delta air chuck, 5a-left column, 5b-right column, the horizontal measuring staff in 6a-lower-left, the horizontal measuring staff in 6b-bottom right, the horizontal measuring staff in 6c-upper left, the horizontal measuring staff of 6d-upper right, 7a-lower-left mast link, 7b-bottom right mast link, 7c-upper left mast link, 7d-upper right mast link, 8a-lower axial current vortex sensor, 8b-upper axial current vortex sensor, 9a-lower radial current vortex sensor, 9b-upper radial current vortex sensor, 10a-lower sensor adaptor, 10b-upper sensor adaptor, 11a-left movement guide rail, 11b-right motion guide rail.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
The aeroengine rotor assembly method optimized based on multi-part concentricity and a device, described method and apparatus is: delta air chuck 4 is configured in aligning tune and inclines on worktable 3 central position.Left movement guide rail 11a and right motion guide rail 11b is symmetrically distributed on the pedestal 1 of air floating shaft system 2 both sides; Left column 5a is arranged on left movement guide rail 11a, and right column 5b is arranged on right motion guide rail 11b.On left column 5a from top to bottom successively removable be adjustably set with upper left mast link 7c and lower-left mast link 7a, upper left horizontal measuring staff 6c horizontal nest is on the mast link 7c of upper left, upper sensor adaptor 10b and the horizontal measuring staff 6c in upper left is connected, and upper axial current vortex sensor 8b and upper sensor adaptor 10b is connected; Lower-left horizontal measuring staff 6a horizontal nest is on the mast link 7a of lower-left, and lower sensor adaptor 10a and the horizontal measuring staff 6a in lower-left is connected, and lower axial current vortex sensor 8a and lower sensor adaptor 10a is connected.On right column 5b from top to bottom successively removable be adjustably set with upper right mast link 7d and bottom right mast link 7b, upper right horizontal measuring staff 6d horizontal nest is on upper right mast link 7d, and upper radial current vortex sensor 9b and the horizontal measuring staff 6d of upper right is connected; Bottom right horizontal measuring staff 6b horizontal nest is on the mast link 7b of bottom right, and lower radial current vortex sensor 9a and the horizontal measuring staff 6b in bottom right is connected.Air floating shaft system 2 is nested on pedestal 1 central position, described air floating shaft system 2 is by air-floating main shaft 2a, worktable 2b, platen 2c on air-bearing shafts, air-bearing shafts pressing disc 2d, photoelectric encoder 2e, photoelectric encoder code-disc 2f, motor stator 2g and rotor 2h is formed, described worktable 2b to be configured on air-bearing shafts on platen 2c upper end portion, on air-bearing shafts, platen 2c is configured on air-floating main shaft 2a upper end portion, air-floating main shaft 2a is configured on air-bearing shafts pressing disc 2d upper end portion, photoelectric encoder code-disc 2f is nested on air-bearing shafts pressing disc 2d outer shroud, photoelectric encoder 2e fits over pedestal 1 central position lower inside admittedly, and it is outside to be positioned at photoelectric encoder code-disc 2f, motor stator 2g fits over pedestal 1 central position lower inside admittedly, and be positioned at photoelectric encoder 2e bottom and rotor 2h outside, rotor 2h is nested on air-bearing shafts pressing disc 2d outer shroud, and be positioned at photoelectric encoder code-disc 2f bottom, air floating shaft system 2 drives measured rotor at the uniform velocity to rotate with the speed of 6 ~ 10r/min, lower axial current vortex sensor 8a carries out equal interval sampling on the axial datum clamp face of measured rotor, lower radial current vortex sensor 9a carries out equal interval sampling on the radial datum clamp face of measured rotor, sampling number should meet and often encloses 1000 ~ 2000 points, by the sampled data on the radial datum clamp face of measured rotor by Least Square Circle matching, assess offset, by the axial datum clamp face up-sampling data of measured rotor by least square plane matching, assess inclination amount, aligning adjusts the worktable 3 that inclines to be configured on air floating shaft system 2 central position, according to size and the angle of offset, regulates aligning to adjust to incline worktable 3 until the size meeting radial reference face offset is within the scope of 0 ~ 3 μm, according to size and the angle of inclination amount, regulate aligning to adjust to incline worktable 3 until the size meeting axial reference level inclination amount is 0 ~ 2 " in scope, upper right mast link 7d is vertically nested in the upside of right column 5b, upper right horizontal measuring staff 6d horizontal nest is on upper right mast link 7d, upper radial current vortex sensor 9b and the horizontal measuring staff 6d of upper right is connected, the radial direction that upper radial current vortex sensor 9b measures measured rotor is installed and measured face, upper left mast link 7c is vertically nested in the upside of left column 5a, upper left horizontal measuring staff 6c horizontal nest is on the mast link 7c of upper left, upper axial current vortex sensor 8b and upper sensor adaptor 10b is connected, the axis that upper axial current vortex sensor 8b measures measured rotor installs and measures face, air floating shaft system 2 at the uniform velocity rotates with the speed of 6 ~ 10r/min, and upper radial current vortex sensor 9b installs and measures equal interval sampling on face in the radial direction of measured rotor, and upper axial current vortex sensor 8b installs and measures equal interval sampling on face in the axis of measured rotor, sampling number should meet and often encloses 1000 ~ 2000 points, the data upper radial current vortex sensor 9b being installed and measured face up-sampling in the radial direction of measured rotor are by Least Square Circle matching and assess concentricity, the data upper axial current vortex sensor 8b being installed and measured face up-sampling in the axis of measured rotor are by least square plane matching and assess perpendicularity, combined axis is to the radius in the face of installing and measuring and this measured rotor and the height difference of finally assemble rotor, and obtaining this rotor affects weights to the rear rotor coaxial degree of assembling, respectively measure assembling needed for whole rotors, obtain each rotor on assembling after rotor coaxial degree affect weights, adopt genetic algorithm to carry out vector optimization the weights of each rotor, obtain the angle of assembling of each rotor, the calculation method affecting weights of rotor coaxial degree is:
in formula: C represents that measured rotor radial direction installs and measures the concentricity in face,
represent the radial eccentric angle installing and measuring the matching center of circle, face, H represents measured rotor and the height difference of finally assembling rotor, R represents the radius axially installing and measuring face, P represents that measured rotor axially installs and measures the perpendicularity in face, and θ represents the angle axially installing and measuring the fit Plane peak place in face.
Claims (1)
1. the aeroengine rotor assembly apparatus optimized based on multi-part concentricity, it is characterized in that air floating shaft system (2) is nested on pedestal (1) central position, described air floating shaft system (2) is by air-floating main shaft (2a), worktable (2b), platen (2c) on air-bearing shafts, air-bearing shafts pressing disc (2d), photoelectric encoder (2e), photoelectric encoder code-disc (2f), motor stator (2g) and rotor (2h) are formed, described worktable (2b) is configured on platen on air-bearing shafts (2c) upper end portion, on air-bearing shafts, platen (2c) is configured on air-floating main shaft (2a) upper end portion, air-floating main shaft (2a) is configured on air-bearing shafts pressing disc (2d) upper end portion, photoelectric encoder code-disc (2f) is nested on air-bearing shafts pressing disc (2d) outer shroud, photoelectric encoder (2e) fits over pedestal (1) central position lower inside admittedly, and it is outside to be positioned at photoelectric encoder code-disc (2f), motor stator (2g) fits over pedestal (1) central position lower inside admittedly, and be positioned at photoelectric encoder (2e) bottom and rotor (2h) outside, rotor (2h) is nested on air-bearing shafts pressing disc (2d) outer shroud, and be positioned at photoelectric encoder code-disc (2f) bottom, aligning adjusts the worktable (3) that inclines to be configured on air floating shaft system (2) central position, delta air chuck (4) is configured in aligning tune and inclines on worktable (3) central position, left movement guide rail (11a) and right motion guide rail (11b) are symmetrically distributed on the pedestal (1) of air floating shaft system (2) both sides, left column (5a) is arranged on left movement guide rail (11a), and right column (5b) is arranged on right motion guide rail (11b), removablely successively from top to bottom on left column (5a) be adjustably set with upper left mast link (7c) and lower-left mast link (7a), horizontal measuring staff (6c) horizontal nest in upper left is on upper left mast link (7c), upper sensor adaptor (10b) is connected with the horizontal measuring staff (6c) in upper left, and upper axial current vortex sensor (8b) and upper sensor adaptor (10b) are connected, horizontal measuring staff (6a) horizontal nest in lower-left is on lower-left mast link (7a), lower sensor adaptor (10a) is connected with the horizontal measuring staff (6a) in lower-left, and lower axial current vortex sensor (8a) and lower sensor adaptor (10a) are connected, removablely successively from top to bottom on right column (5b) be adjustably set with upper right mast link (7d) and bottom right mast link (7b), horizontal measuring staff (6d) horizontal nest of upper right is on upper right mast link (7d), and upper radial current vortex sensor (9b) is connected with the horizontal measuring staff (6d) of upper right, horizontal measuring staff (6b) horizontal nest in bottom right is on bottom right mast link (7b), and lower radial current vortex sensor (9a) is connected with the horizontal measuring staff (6b) in bottom right.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105443169B (en) * | 2015-11-11 | 2017-04-19 | 上海交通大学 | Device and method for assembling multi-stage drum type rotor of aero-engine |
| CN109297446B (en) * | 2018-12-18 | 2021-05-25 | 中国航发沈阳发动机研究所 | Device and method for assembling and measuring multistage low-pressure turbine rotor of aircraft engine |
| CN115077920B (en) * | 2022-06-21 | 2023-07-14 | 大连理工大学 | Multistage turbine component assembly deformation test equipment |
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| US6898547B1 (en) * | 2000-09-11 | 2005-05-24 | Axiam, Incorporated | Rotor assembly system and method |
| CN1891396A (en) * | 2005-03-25 | 2007-01-10 | 三菱重工业株式会社 | System for assembly of a rotating machine |
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| CN101746671A (en) * | 2008-12-12 | 2010-06-23 | 诺沃皮尼奥内有限公司 | Method for moving and aligning heavy device |
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| CN103808252A (en) * | 2014-02-14 | 2014-05-21 | 哈尔滨工业大学 | Air floatation assembling method and device based on gantry structure for rotors of aero-engine |
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2014
- 2014-02-14 CN CN201410052188.4A patent/CN103790648B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4118847A (en) * | 1975-08-19 | 1978-10-10 | Stal-Laval Turbin Ab | Method of assembling a turbo-machine, apparatus for use in the method, and turbo machine constructed according to said method |
| US6898547B1 (en) * | 2000-09-11 | 2005-05-24 | Axiam, Incorporated | Rotor assembly system and method |
| CN1891396A (en) * | 2005-03-25 | 2007-01-10 | 三菱重工业株式会社 | System for assembly of a rotating machine |
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| CN202493302U (en) * | 2012-03-19 | 2012-10-17 | 山东齐鲁电机制造有限公司 | Assembling platform for vertically assembled rotor of turbine |
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