CN103791831A - Aircraft engine rotor assembly method and device based on measurement of four inductive sensors - Google Patents

Aircraft engine rotor assembly method and device based on measurement of four inductive sensors Download PDF

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Publication number
CN103791831A
CN103791831A CN201410052257.1A CN201410052257A CN103791831A CN 103791831 A CN103791831 A CN 103791831A CN 201410052257 A CN201410052257 A CN 201410052257A CN 103791831 A CN103791831 A CN 103791831A
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rotor
radially
measures
inductance sensor
measuring
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CN103791831B (en
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王雷
谭久彬
杨文国
金国良
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Harbin Institute of Technology
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Harbin Institute of Technology
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Abstract

The invention provides an aircraft engine rotor assembly method and device based on measurement of four inductive sensors, and belongs to mechanical assembly technologies. According to the assembly method and device, a rotation criterion is determined based on a magnetic levitation rotation axis system; according to a grating ruler, angle locating of a rotary table is determined; based on a four-measuring-head measuring device, a radial error of a radial assembly surface of a rotor and a tilt error of an axial assembly surface of the rotor are extracted, and the influence weight, on the assembled rotor coaxiality, of the rotor is obtained; all rotors required for assembly are respectively measured, and the influence weights, on the assembled rotor coaxiality, of all the rotors are obtained; vector optimization is conducted on the weight of each rotor so as to obtain the assembly angle of each rotor. The aircraft engine rotor assembly method and device have the advantages that the rotors are high in coaxiality after being assembled, vibration is reduced, installation easiness is achieved, flexibility is high, and engine performance is improved.

Description

Aeroengine rotor assembly method and the device measured based on No. four inductance sensors
Technical field
The invention belongs to mechanical assembly technique, relate generally to a kind of aeroengine rotor assembly method and device of measuring based on No. four inductance sensors.
Background technology
Aeromotor assembling is the final tache in aeromotor manufacture process, is also one of of paramount importance manufacture link.Under existing Aeroengine Design scheme and process technology level conditions, the quality of assembling and work efficiency have material impact for quality, performance and the production efficiency of engine.So will improve as much as possible the right alignment of rotor after installing in assembling process, and then reduce the vibration of aeromotor, improve the performance of aeromotor.But, in reality is produced, the assembling of aeromotor is complete manual setting, the height of assembly precision and whether stablize the assembler's that places one's entire reliance upon operating experience and technical merit, lack a kind of method that high speed effectively instructs aeroengine rotor assembling, and then raising efficiency of assembling, reduce aeromotor vibration, improve the performance of aeromotor.
Along with aeromotor assembling measuring technology more and more comes into one's own, aeromotor assembling measuring technology more and more comes into one's own, and becomes the focus of research.Increasing researchist has carried out deep discussion for aeroengine rotor, and Rools-Royce proposes a kind of scheme (System and method for improving the damage tolerance of a rotor assembly.European Patent Publication No: EP2525049A2), main by each sub-test macro being obtained to the stress signal of the each position of rotor, main system is analyzed the signal of each subsystem collection, damage the impact of parameter analysis on assembling from the appearance of each rotor, and then improved the assembling of aeroengine rotor.The problem that the method exists is: do not analyze the geometric sense aspect of rotor to the impact of assembling, cannot improve the impact of geometric sense on assembling.
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 vibrator 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 the impulse response signal of the aeroengine rotor to obtained a multicarrier coupling adopts dual-tree complex wavelet transform method to analyze, and obtains the impulse response subsignal of the aeroengine rotor of eight single carriers; Finally the impulse response subsignal of the aeroengine rotor to eight obtained single carriers extracts average assembly performance index, if the average assembly performance desired value of gained is more than or equal to 10, judge that this aeroengine rotor assembling is qualified, if the mean value of gained is less than 10, judge defective, the rebuilding of need to doing over again.The problem that the method exists is: to aeroengine rotor, assembling is not instructed.
Luoxin Precision Parts (shanghai) Co., Ltd. proposes a kind of right alignment equipment (a kind of axiality measuring apparatus of measuring.Publication number: CN202024752U).This device comprises a pair of transmission main shaft being rotated by synchronizing linkage synchro control being arranged on apparatus subject, and this transmission main shaft the inner respectively correspondence is provided with measuring head and positioning reference plane; Between described measuring head, top, position has transducer probe assembly.It mainly solves the right alignment of existing precision component, the measurement of beating.The problem that the method exists is: only measure the right alignment of measured piece, do not solve the rear poor problem of right alignment 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 measuring process is as follows, first assembles measuring system, calibration sensor, determines the relation between blade tip radial play and voltage, then sensor is fixed on blade, finally measures engine rotor blade tip radial play.The problem that the method exists is: do not consider in rotor assembling process the impact after axially installed surface is on rotor assembling.
The tested object of aeromotor assembling is stators and rotor, and under the condition meeting the demands in component processing precision, final inspection is by the Determines after coordinating is installed, and the index of evaluation is mainly the right alignment parameter of rotor after assembling.Engine rotation produces high pressure, and its rotor is made up of multiple single parts of combining, ideal when the revolving shaft of each parts and the dead in line of whole engine.High Rotation Speed speed when high-performance enginer work is greater than 10000rpm, single part axially or radial beat will inevitably cause turbine disk misalignment engine rotation axis, under such condition, can produce very large centrifugal force, the imbalance that causes rotor to rotate, cause engine luggine, thereby guarantee that the right alignment after each parts assembling is the Focal point and difficult point of installing.
One does not use the Model Mounting of right alignment optimization method, axially and radially the beating because machining precision restriction exists of all parts, eccentric, inclination equal error.If directly assembled randomly, just may form the bending situation that is similar to " banana ", upper component has been accumulated bias or the droop error of all parts below, causes the beat of the rear entirety of assembling and tilts huge, cause the non-constant of engine rotor right alignment, be difficult to meet request for utilization.
At present, domestic engine assembly still adopts traditional assembly method, tests manually as main take clock gauge.According to assembled in sequence engine from top to bottom, to assemble parts and measure afterwards, the entirety of guaranteeing at every turn to increase after parts can meet the threshold condition of right alignment, and then another parts are upwards installed.All using previous parts as benchmark, finally require overall right alignment within the specific limits at every turn.This method expends a large amount of time, and the possibility of doing over again is large, efficiency and one-time success rate that very impact is installed, and once successfully assembling needs 4 to 5 days conventionally.And, because be not optimum assembling position, conventionally need dismounting 4 to 5 times, also need workman to assemble with rich experiences, each assembling all needs to experience hot-working and cold working.So current aeromotor assembly method installation effectiveness is low, be difficult for installing, and after assembling, right alignment is poor, affects engine performance.
Summary of the invention
The deficiency existing for above-mentioned prior art, a kind of aeroengine rotor assembly method and device of measuring based on No. four inductance sensors proposed, to solve the low problem of right alignment after aeroengine rotor assembling, reach right alignment after rotor assembling high, reduce vibration, be easy to install, flexibility ratio is high, the object of improving engine performance.
The object of the present invention is achieved like this:
An aeroengine rotor assembly method of measuring based on No. four inductance sensors, this measuring method step is as follows:
Measured rotor is positioned over to aligning to be adjusted on the worktable that inclines fixing; Contact measuring the telescopic inductance sensor of axial datum clamp face and the axial datum clamp face of measured rotor, incline for adjusting; Measure the lever inductance sensor of datum clamp face radially and contact with datum clamp face radially, for aligning; Magnetic floating turntable adjusts the worktable that inclines to drive measured rotor at the uniform velocity to rotate with the speed of 6~10r/min through aligning, the telescopic inductance sensor of measuring axial datum clamp face carries out equal interval sampling on the axial datum clamp face of measured rotor, measures the radially lever inductance sensor of datum clamp face and carry out equal interval sampling on the radially datum clamp face of measured rotor; Sampling number should meet 1000~2000 points of every circle; Sampled data on the radially datum clamp face of measured rotor, by Least Square Circle matching, is assessed to offset, the axial datum clamp face up-sampling data of measured rotor, by least square plane matching, are assessed to tilt quantity; According to the size of offset and angle, regulate aligning to adjust the aligning knob of the worktable that inclines; According to the size of tilt quantity and angle, regulate aligning to adjust the tune of worktable of the inclining knob that inclines, until aligning adjusts size that the worktable that inclines meets radial reference face offset within the scope of 0~3 μ m, axially the size of reference field tilt quantity is 0~2 " in scope; Axially install and measure the telescopic inductance sensor of face and the axially face of installing and measuring of measured rotor contacts by measuring, measurement radially installs and measures the lever inductance sensor of face and the radially face of installing and measuring of measured rotor contacts; Magnetic floating turntable at the uniform velocity rotates with the speed of 6~10r/min, measure the telescopic inductance sensor that axially installs and measures face measured rotor axially install and measure equal interval sampling on face, the lever inductance sensor of measuring the face that radially installs and measures is is radially installing and measuring equal interval sampling on face respectively; Sampling number should meet 1000~2000 points of every circle; By measure the lever inductance sensor that radially installs and measures face in the data of the face that radially the installs and measures up-sampling of measured rotor by Least Square Circle matching and assess concentricity; By measure the telescopic inductance sensor that axially installs and measures face in the data of the face that axially the installs and measures up-sampling of measured rotor by least square plane matching and assess verticality; Combined axis, to radius and this measured rotor and final difference in height of assembling rotor of the face of installing and measuring, obtains this rotor to assembling the weights that affect of rear rotor coaxial degree; Measure respectively the required whole rotors of assembling, obtain each rotor to assembling the weights that affect of rear rotor coaxial degree; Adopt genetic algorithm to carry out vector optimization the weights of each rotor, obtain the angle of assembling of each rotor, the account form that affects weights of rotor coaxial degree is: in formula: C represents that measured rotor radially installs and measures the concentricity of face, represent radially to install and measure the eccentric angle in the face matching center of circle, H represents measured rotor and final difference in height of assembling rotor, R represents the radius of the face that axially installs and measures, P represents that measured rotor axially installs and measures the verticality of face, and θ represents the angle at the fit Plane peak place of the face that axially installs and measures.
A kind of structure of the aeroengine rotor assembling device of measuring based on No. four inductance sensors is that magnetic floating axle system is nested on pedestal center, described magnetic floating axle is by Magnetic suspension spindle, worktable, platen on magnetic floating axle, magnetic floating axle pressing disc, grating ruler reading head, grating scale, upper permanent magnet, lower permanent magnet, upper coil, lower coil, motor stator and rotor form, described worktable is configured on magnetic floating axle on platen upper end, on magnetic floating axle, platen is configured on Magnetic suspension spindle upper end, Magnetic suspension spindle is configured on magnetic floating axle pressing disc upper end, grating scale is nested on magnetic floating axle pressing disc outer shroud, grating ruler reading head fits over pedestal center lower inside admittedly, and be positioned at grating scale outside, upper permanent magnet is enclosed within on Magnetic suspension spindle outer shroud, and be fixed on platen bottom on magnetic floating axle, reach the standard grade snare on Magnetic suspension spindle outer shroud, and be fixed on base interior, 5-10cm place, permanent magnet below in distance, lower permanent magnet is enclosed within on Magnetic suspension spindle outer shroud, and be fixed on magnetic floating axle pressing disc upper end, lower coil is enclosed within on Magnetic suspension spindle outer shroud, and be fixed on base interior, apart from 5-10cm place, lower permanent magnet top, rotor is nested on magnetic floating axle pressing disc outer shroud, and is positioned at grating scale bottom, motor stator fits over pedestal center lower inside admittedly, and is positioned at grating ruler reading head bottom and rotor outside, it is on center that aligning adjusts the worktable that inclines to be configured in magnetic floating axle, and three-jaw fluid-pressure chuck is configured in aligning tune and inclines on worktable center, left movement guide rail and right motion guide rail are symmetrically distributed on the pedestal that magnetic floating axle is both sides, and left column is arranged on left movement guide rail, and right column is arranged on right motion guide rail, on left column, be set with to removable adjusting successively from top to bottom upper left mast web member and lower-left mast web member, the horizontal measuring staff level in upper left is nested on the mast web member of upper left, and the horizontal measuring staff in upper lever formula inductance sensor and upper left is connected, the horizontal measuring staff level in lower-left is nested on the mast web member of lower-left, and the horizontal measuring staff of lower lever inductance sensor and lower-left is connected, on right column, be set with to removable adjusting successively from top to bottom upper right mast web member and bottom right mast web member, the horizontal measuring staff level in upper right is nested on the mast web member of upper right, and the horizontal measuring staff of upper telescopic inductance sensor and upper right is connected, the horizontal measuring staff level in bottom right is nested on the mast web member of bottom right, and the horizontal measuring staff of lower telescopic inductance sensor and bottom right is connected.
Compared with prior art, feature of the present invention is:
The present invention can obtain the right alignment weights of each rotor by measuring the concentricity of each rotor and verticality, again the right alignment weights of each rotor are carried out to vector optimization, just can obtain instructing setting angle, save 40% set-up time and expense, 98% one-step installation success ratio, measurable installation progress, improve engine stabilization, reduce engine luggine, save motor fuel consumption, reduce C02 discharge, reduce engine noise and pollute.
Accompanying drawing explanation:
Fig. 1 is four gauge head measurement mechanism structural representations
Fig. 2 is magnetic floating axle architecture schematic diagram
Piece number in figure: 1-pedestal, 2-magnetic floating axle system, 2a-Magnetic suspension spindle, 2b-worktable, platen on 2c-magnetic floating axle, 2d-magnetic floating axle pressing disc, 2e-grating ruler reading head, 2f-grating scale, the upper permanent magnet of 2g1-, permanent magnet under 2g2-, the upper coil of 2h1-, 2h2-lower coil, 2i-motor stator, 2j-rotor, 3-aligning is adjusted the worktable that inclines, 4-three-jaw fluid-pressure 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 in 6d-upper right, 7a-lower-left mast web member, 7b-bottom right mast web member, 7c-upper left mast web member, 7d-upper right mast web member, lever inductance sensor under 8a-, 8b-upper lever formula inductance sensor, telescopic inductance sensor under 9a-, the upper telescopic inductance sensor of 9b-, 10a-left movement guide rail, the right motion guide rail of 10b-.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Aeroengine rotor assembly method and the device measured based on No. four inductance sensors, described method and apparatus is: three-jaw fluid-pressure chuck 4 is configured in aligning tune and inclines on worktable 3 centers.Left movement guide rail 10a and right motion guide rail 10b are symmetrically distributed on the pedestal 1 that magnetic floating axle is 2 both sides, and left column 5a is arranged on left movement guide rail, and right column 5b is arranged on right motion guide rail.On left column 5a, be set with to removable adjusting successively from top to bottom upper left mast web member 7c and lower-left mast web member 7a, it is upper that upper left horizontal measuring staff 6c level is nested in upper left mast web member 7c, and the horizontal measuring staff 6c in upper lever formula inductance sensor 8b and upper left is connected; It is upper that lower-left horizontal measuring staff 6a level is nested in lower-left mast web member 7a, and the horizontal measuring staff 6a in lower lever inductance sensor 8a and lower-left is connected.On right column 5b, be set with to removable adjusting successively from top to bottom upper right mast web member 7d and bottom right mast web member 7b, it is upper that upper right horizontal measuring staff 6d level is nested in upper right mast web member 7d, and upper telescopic inductance sensor 9b and the horizontal measuring staff 6d in upper right are connected; It is upper that bottom right horizontal measuring staff 6b level is nested in bottom right mast web member 7b, and lower telescopic inductance sensor 9a and the horizontal measuring staff 6b in bottom right are connected.Magnetic floating axle is 2 to be nested on pedestal 1 center, described magnetic floating axle is 2 by Magnetic suspension spindle 2a, worktable 2b, platen 2c on magnetic floating axle, magnetic floating axle pressing disc 2d, grating ruler reading head 2e, grating scale 2f, upper permanent magnet 2g1, lower permanent magnet 2g2, upper coil 2h1, lower coil 2h2, motor stator 2i and rotor 2j form, described worktable 2b is configured on magnetic floating axle on platen 2c upper end, on magnetic floating axle, platen 2c is configured on Magnetic suspension spindle 2a upper end, Magnetic suspension spindle 2a is configured on magnetic floating axle pressing disc 2d upper end, grating scale 2f is nested on magnetic floating axle pressing disc 2d outer shroud, grating ruler reading head 2e fits over pedestal 1 center lower inside admittedly, and be positioned at grating scale 2f outside, upper permanent magnet 2g1 is enclosed within on Magnetic suspension spindle 2a outer shroud, and be fixed on platen 2c bottom on magnetic floating axle, upper coil 2h1 is enclosed within on Magnetic suspension spindle 2a outer shroud, and be fixed on pedestal 1 inside, 5-10cm place, permanent magnet 2g1 below in distance, lower permanent magnet 2g2 is enclosed within on Magnetic suspension spindle 2a outer shroud, and is fixed on magnetic floating axle pressing disc 2d upper end, and lower coil 2h2 is enclosed within on Magnetic suspension spindle 2a outer shroud, and is fixed on pedestal 1 inside, apart from 5-10cm place, lower permanent magnet 2g2 top, rotor 2j is nested on magnetic floating axle pressing disc 2d outer shroud, and is positioned at grating scale 2f bottom, and motor stator 2i fits over pedestal 1 center lower inside admittedly, and is positioned at grating ruler reading head 2e bottom and rotor 2j outside.Magnetic floating axle is that 2 drive measured rotor are at the uniform velocity rotated with the speed of 6~10r/min, lower telescopic inductance sensor 9a carries out equal interval sampling on the axial datum clamp face of measured rotor, lower lever inductance sensor 8a carries out equal interval sampling on the radially datum clamp face of measured rotor, sampling number should meet 1000~2000 points of every circle, sampled data on the radially datum clamp face of measured rotor is passed through to Least Square Circle matching, assess offset, the axial datum clamp face up-sampling data of measured rotor are passed through to least square plane matching, assess tilt quantity, aligning is adjusted the worktable 3 that inclines, and to be configured in magnetic floating axle be on 2 centers, according to the size of offset and angle, regulate aligning to adjust to incline worktable 3 until the size that meets radial reference face offset within the scope of 0~3 μ m, according to the size of tilt quantity and angle, regulate aligning to adjust to incline worktable 3 until the size that meets axial reference field tilt quantity 0~2 " in scope, upper right mast web member 7d is vertically nested in the upside of right column 5b, upper right horizontal measuring staff 6d level is nested on the mast web member 7d of upper right, upper telescopic inductance sensor 9b and the horizontal measuring staff 6d in upper right are connected, upper telescopic inductance sensor 9b is contacted with the axially face of installing and measuring of measured rotor, upper left mast web member 7c is vertically nested in the upside of left column 5a, upper left horizontal measuring staff 6c level is nested on the mast web member 7c of upper left, the horizontal measuring staff 6c in upper lever formula inductance sensor 8b and upper left is connected, upper lever formula inductance sensor 8b contacts with the radially face of installing and measuring of measured rotor, magnetic floating axle is 2 at the uniform velocity to rotate with the speed of 6~10r/min, and upper telescopic inductance sensor 9b axially installs and measures equal interval sampling on face measured rotor, and upper lever formula inductance sensor 8b radially installs and measures equal interval sampling on face measured rotor, sampling number should meet 1000~2000 points of every circle, by upper lever formula inductance sensor 8b in the data of the face that radially the installs and measures up-sampling of measured rotor by Least Square Circle matching and assess concentricity, by upper telescopic inductance sensor 9b in the data of the face that axially the installs and measures up-sampling of measured rotor by least square plane matching and assess verticality, combined axis, to radius and this measured rotor and final difference in height of assembling rotor of the face of installing and measuring, obtains this rotor to assembling the weights that affect of rear rotor coaxial degree, measure respectively the required whole rotors of assembling, obtain each rotor to assembling the weights that affect of rear rotor coaxial degree, adopt genetic algorithm to carry out vector optimization the weights of each rotor, obtain the angle of assembling of each rotor, the account form that affects weights of rotor coaxial degree is: in formula: C represents that measured rotor radially installs and measures the concentricity of face, represent radially to install and measure the eccentric angle in the face matching center of circle, H represents measured rotor and final difference in height of assembling rotor, R represents the radius of the face that axially installs and measures, P represents that measured rotor axially installs and measures the verticality of face, and θ represents the angle at the fit Plane peak place of the face that axially installs and measures.

Claims (2)

1. an aeroengine rotor assembly method of measuring based on No. four inductance sensors, is characterized in that this measuring method is: measured rotor is positioned over to aligning and adjusts on the worktable that inclines fixing; Contact measuring the telescopic inductance sensor of axial datum clamp face and the axial datum clamp face of measured rotor, incline for adjusting; Measure the lever inductance sensor of datum clamp face radially and contact with datum clamp face radially, for aligning; Magnetic floating turntable adjusts the worktable that inclines to drive measured rotor at the uniform velocity to rotate with the speed of 6~10r/min through aligning, the telescopic inductance sensor of measuring axial datum clamp face carries out equal interval sampling on the axial datum clamp face of measured rotor, measures the radially lever inductance sensor of datum clamp face and carry out equal interval sampling on the radially datum clamp face of measured rotor; Sampling number should meet 1000~2000 points of every circle; Sampled data on the radially datum clamp face of measured rotor, by Least Square Circle matching, is assessed to offset, the axial datum clamp face up-sampling data of measured rotor, by least square plane matching, are assessed to tilt quantity; According to the size of offset and angle, regulate aligning to adjust the aligning knob of the worktable that inclines; According to the size of tilt quantity and angle, regulate aligning to adjust the tune of worktable of the inclining knob that inclines, until aligning adjusts size that the worktable that inclines meets radial reference face offset within the scope of 0~3 μ m, axially the size of reference field tilt quantity is 0~2 " in scope; Axially install and measure the telescopic inductance sensor of face and the axially face of installing and measuring of measured rotor contacts by measuring, measurement radially installs and measures the lever inductance sensor of face and the radially face of installing and measuring of measured rotor contacts; Magnetic floating turntable at the uniform velocity rotates with the speed of 6~10r/min, measure the telescopic inductance sensor that axially installs and measures face measured rotor axially install and measure equal interval sampling on face, the lever inductance sensor of measuring the face that radially installs and measures is is radially installing and measuring equal interval sampling on face respectively; Sampling number should meet 1000~2000 points of every circle; By measure the lever inductance sensor that radially installs and measures face in the data of the face that radially the installs and measures up-sampling of measured rotor by Least Square Circle matching and assess concentricity; By measure the telescopic inductance sensor that axially installs and measures face in the data of the face that axially the installs and measures up-sampling of measured rotor by least square plane matching and assess verticality; Combined axis, to radius and this measured rotor and final difference in height of assembling rotor of the face of installing and measuring, obtains this rotor to assembling the weights that affect of rear rotor coaxial degree; Measure respectively the required whole rotors of assembling, obtain each rotor to assembling the weights that affect of rear rotor coaxial degree; Adopt genetic algorithm to carry out vector optimization the weights of each rotor, obtain the angle of assembling of each rotor, the account form that affects weights of rotor coaxial degree is:
in formula: C represents that measured rotor radially installs and measures the concentricity of face, represent radially to install and measure the eccentric angle in the face matching center of circle, H represents measured rotor and final difference in height of assembling rotor, R represents the radius of the face that axially installs and measures, P represents that measured rotor axially installs and measures the verticality of face, and θ represents the angle at the fit Plane peak place of the face that axially installs and measures.
2. an aeroengine rotor assembling device of measuring based on No. four inductance sensors, it is characterized in that magnetic floating axle system (2) is nested on pedestal (1) center, described magnetic floating axle system (2) is by Magnetic suspension spindle (2a), worktable (2b), platen on magnetic floating axle (2c), magnetic floating axle pressing disc (2d), grating ruler reading head (2e), grating scale (2f), upper permanent magnet (2g1), lower permanent magnet (2g2), upper coil (2h1), lower coil (2h2), motor stator (2i) and rotor (2j) form, described worktable (2b) is configured on platen on magnetic floating axle (2c) upper end, platen on magnetic floating axle (2c) is configured on Magnetic suspension spindle (2a) upper end, Magnetic suspension spindle (2a) is configured on magnetic floating axle pressing disc (2d) upper end, grating scale (2f) is nested on magnetic floating axle pressing disc (2d) outer shroud, grating ruler reading head (2e) fits over pedestal (1) center lower inside admittedly, and be positioned at grating scale (2f) outside, upper permanent magnet (2g1) is enclosed within on Magnetic suspension spindle (2a) outer shroud, and be fixed on platen on magnetic floating axle (2c) bottom, upper coil (2h1) is enclosed within on Magnetic suspension spindle (2a) outer shroud, and be fixed on pedestal (1) inside, 5-10cm place, permanent magnet in distance (2g1) below, lower permanent magnet (2g2) is enclosed within on Magnetic suspension spindle (2a) outer shroud, and be fixed on magnetic floating axle pressing disc (2d) upper end, lower coil (2h2) is enclosed within on Magnetic suspension spindle (2a) outer shroud, and be fixed on pedestal (1) inside, apart from 5-10cm place, lower permanent magnet (2g2) top, rotor (2j) is nested on magnetic floating axle pressing disc (2d) outer shroud, and be positioned at grating scale (2f) bottom, motor stator (2i) fits over pedestal (1) center lower inside admittedly, and be positioned at grating ruler reading head (2e) bottom and rotor (2j) outside, aligning adjusts the worktable (3) that inclines to be configured on magnetic floating axle system (2) center, and three-jaw fluid-pressure chuck (4) is configured in aligning tune and inclines on worktable (3) center, left movement guide rail (10a) and right motion guide rail (10b) are symmetrically distributed on the pedestal (1) of magnetic floating axle system (2) both sides, left column (5a) is arranged on left movement guide rail, and right column (5b) is arranged on right motion guide rail, on left column (5a), removable adjusting ground is set with upper left mast web member (7c) and lower-left mast web member (7a) successively from top to bottom, it is upper that the horizontal measuring staff in upper left (6c) level is nested in upper left mast web member (7c), and upper lever formula inductance sensor (8b) is connected with upper left horizontal measuring staff (6c), it is upper that the horizontal measuring staff in lower-left (6a) level is nested in lower-left mast web member (7a), and lower lever inductance sensor (8a) is connected with lower-left horizontal measuring staff (6a), on right column (5b), removable adjusting ground is set with upper right mast web member (7d) and bottom right mast web member (7b) successively from top to bottom, it is upper that the horizontal measuring staff in upper right (6d) level is nested in upper right mast web member (7d), and upper telescopic inductance sensor (9b) is connected with upper right horizontal measuring staff (6d), it is upper that the horizontal measuring staff in bottom right (6b) level is nested in bottom right mast web member (7b), and lower telescopic inductance sensor (9a) is connected with bottom right horizontal measuring staff (6b).
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