CN105841627A - Apparatus for measuring geometric deformation of large-size annular casing type part - Google Patents
Apparatus for measuring geometric deformation of large-size annular casing type part Download PDFInfo
- Publication number
- CN105841627A CN105841627A CN201610305954.2A CN201610305954A CN105841627A CN 105841627 A CN105841627 A CN 105841627A CN 201610305954 A CN201610305954 A CN 201610305954A CN 105841627 A CN105841627 A CN 105841627A
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- attitude
- casing
- adjusting system
- deformation
- optical ranging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses an apparatus for measuring geometric deformation of large-size annular parts such as a casing and the like. Accurate measurement of deformation is realized by use of non-contact distance measurement sensors, and eccentric displacement and contour shape parameters after an annular part to be measured deforms are obtained through operation. In an aeroengine, a casing is usually designed to be of a thin-wall annular structure, after the geometric deformation is generated, its contour is changed from a circle to an ellipse, the eccentric displacement is generated, as a result, output values of the distance measurement sensors are changed, and through acquiring output data of each sensor and performing later operation, a deformation condition of a casing to be measured can be obtained. Therefore, the measurement apparatus can be applied to online measurement of the geometric deformation of an engine casing type part in a ground trial fun process, and accordingly, a technical scheme and a means are provided for an engine performance test. The apparatus is simple in principle, high in measurement precision and convenient to use, can perform online measurement and can also be applied to online detection of the geometric deformation of multiple large-size thin-wall annular parts.
Description
Technical field
The present invention relates to the device of a kind of geometry deformation for measuring large-sized annular casing class part,
Belong to field of measuring technique.
Background technology
In aviation field, as the main load parts in electromotor, casing is usually designed to thin
The structure of wall annular, is mainly connected by outside casing, internal casing and several radial direction load support plates
Connect and form.Wherein, outside casing and internal casing are all combined by cylindrical and cone
Thin-wall cylindrical part, load support plate is the most symmetrical, its two ends respectively with outside machine
Casket and internal casing are affixed, thus constitute radial frame structure.In the running of electromotor,
Casing gas load to be born and mass inertial force, still suffer from the thermal force caused by the temperature difference,
And affected by bearing load and driven accessary installation moment of flexure.Therefore, worked at electromotor
Cheng Zhong, can there are problems in casing, the radial direction geometry deformation wherein produced with outside casing is the most
Prominent, its profile can be caused to be become elliptical shape from circle, lose stable, bring to flight huge
Potential safety hazard.
At present, for the geometry deformation amount of the large thin-wall ring-shaped work pieces such as engine crankcase, also do not have
Effective detection means, this is mainly due to the work under bad environment of electromotor, makes many sensors
Cannot apply.Therefore, obtained the deformation parameter of casing class part by certain measurement means, from
And be that the problem on deformation solving casing class part provides source data, it has also become Aeroengine Design
During extremely urgent task.
Summary of the invention
The present invention designs for above-mentioned existing technology status and provides a kind of for measuring just
The device of the geometry deformation of large-sized annular casing class part, its objective is by gathering each installation joint
The deflection at place obtains the geometric shape parameters after engine crankcase is deformed.
It is an object of the invention to be achieved through the following technical solutions:
This kind is for measuring the device of the geometry deformation of large-sized annular casing class part, it is characterised in that:
In this device, for four the installation joints being on same cross section on engine crankcase (10) outer wall
(5), arrange four contactless optical ranging sensors (6), monitor each installation respectively and save
(5) the stress deformation situation at place；Optical ranging sensor (6) based on non-touching measurement principles,
The displacement of the testee in the range of can measuring being in it carries out contactless accurate measurement；
Optical ranging sensor (6) is arranged on the periphery installing joint (5), to two optics to distribution
The measuring beam of distance measuring sensor (6) overlaps, and is positioned to be surveyed and saves (5) to two installations of distribution
Determined by the straight line at engine crankcase (10) center, finally obtained casing by computing
Geometric parameter after being deformed.
Two optical ranging sensors (6) are arranged on left side column by attitude-adjusting system (2)
(3), on, another two optical ranging sensors (6) are arranged on the right side by attitude-adjusting system (2)
On heel post (4)；Attitude-adjusting system (2) is made up of D translation platform and one-dimensional turntable, and three
Dimension translation stage is arranged on one-dimensional turntable, the rotating shaft of one-dimensional turntable and engine crankcase (10)
On outer wall, four cross sections installing joint (5) place are vertical, left side column (3) and right side uprights (4)
It is fixed on base (7) by bent plate (9) respectively, left side column (3) and right side uprights (4)
Between distance can be adjusted according to the radial dimension of engine crankcase to be measured (10), measure
During the geometry deformation of engine crankcase (10), engine crankcase (10) is positioned at left side column (3)
And between right side uprights (4), and it is in the region surrounded by four optical ranging sensors (6)
In；The bottom of base (7) is provided with the adjustment cushion block (8) for adjusting base (7) level.
Optical ranging sensor (6) is fixed on the peace on the D translation platform of attitude-adjusting system (2)
On dress table top (12), the one-dimensional turntable of attitude-adjusting system (2) passes through a triangular support plate
(1) it is arranged on left side column (3) and right side uprights (4), on triangular support plate (1)
Being drilled with arc groove (13), one-dimensional turntable is connected with arc groove (13) by bolt, to adjust one
The orientation of dimension turntable.
Three regulations handle (11) it are furnished with on the D translation platform of attitude-adjusting system (2), permissible
The displacement carried out on three directions manually regulates；Join on the one-dimensional turntable of attitude-adjusting system (2)
There is regulation handle (11), angle can be carried out and manually regulate.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 is the attitude-adjusting system structural representation of the present invention；
Fig. 3 is the triangular support plate structure schematic diagram of the present invention；
Fig. 4 is the Computing Principle schematic diagram before casing is deformed；
Fig. 5 is the Computing Principle schematic diagram after casing is deformed；
Fig. 6 is the software flow pattern in industrial computer.
Detailed description of the invention
Below with reference to drawings and Examples, technical scheme is described in further detail:
Seeing shown in accompanying drawing 1～3, this kind is for measuring the device of aero-engine casing geometry deformation
In, at four the installation joints 5 being positioned on same cross section on engine crankcase 10 outer wall, cloth respectively
Put a stylobate in the laser displacement sensor 6 of optical triangulation principle of reflection, to monitor each installation joint 5
The stress deformation situation at place, and measured deflection is input to industrial computer by data collecting card
In, software carry out data process, to obtain the geometric parameter after engine crankcase 10 is deformed,
Thus realize the real-time monitoring to the casing deformation during engine test；Laser displacement passes
Sensor 6 is placed in the periphery installing joint 5, the survey to two laser displacement sensors 6 to distribution
Amount light beam overlaps, and is positioned at measured saving determined by 5 through sending out to two installations of distribution
On the straight line at motivation casing 10 center；Two laser displacement sensors 6 are passed through four-degree-of-freedom respectively
Attitude-adjusting system 2 be arranged on the column 3 of left side, another two laser displacement sensors 6 are respectively
It is arranged on right side uprights 4 by the attitude-adjusting system 2 of four-degree-of-freedom；Attitude-adjusting system 2
It is made up of D translation platform and one-dimensional turntable, D translation platform is furnished with three regulation handles 11,
The displacement that can carry out on three directions manually regulates, and one-dimensional turntable is furnished with a regulation handle
11, angle can be carried out and manually regulate；D translation platform is arranged on one-dimensional turntable, one-dimensional rotation
The cross section that joint 5 places are installed in the rotating shaft of turntable with on engine crankcase 10 outer wall four is vertical；Left side
Column 3 and right side uprights 4 can use section bar to make, and are fixed on granite by bent plate 9 respectively
On base 7, the distance between left side column 3 and right side uprights 4 can be according to engine crankcase to be measured
The radial dimension of 10 is adjusted, and passes so that tested engine crankcase 10 is in by four laser displacements
In sensor 6 area defined；The bottom of granite base 7 is provided with four and adjusts cushion block 8, adjusts
Save four height adjusting cushion block 8, make the upper surface level of granite base 7.
Laser displacement sensor 6 is fixed on the installation table top of the D translation platform of attitude-adjusting system 2
On 12, the one-dimensional turntable of attitude-adjusting system 2 is arranged on a left side by a triangular support plate 1
On heel post 3 and right side uprights 4, triangular support plate 1 is drilled with arc groove 13, one-dimensional rotation
Turntable is connected with arc groove 13 by bolt, to adjust the orientation of one-dimensional turntable.
Seeing shown in accompanying drawing 4, before starting to measure, casing 10 is installed joint 5 by four and is installed to
On electromotor, this device is installed on the periphery of casing 10 to be measured, is made by attitude-adjusting system 2
Four laser displacement sensors 6 are in correct orientation, start four laser displacement sensors 6, make work
Software system in control machine can collect the output signal of four laser displacement sensors 6, starts
Machine casing 10 before being deformed for circle, with the center of circle O of engine crankcase 10 as zero,
With to straight line through engine crankcase 10 center of circle determined by two installation joints 5 of distribution as X,
Y-axis, sets up rectangular coordinate system XOY, it is possible to obtain following parameter:
R: casing be deformed before radius of a circle；
(XA, 0): casing is deformed the coordinate of front A point, wherein XA=r；
(0,YB): casing is deformed the coordinate of front B point, wherein YB=r；
(XC, 0): casing is deformed the coordinate of front C point, wherein XC=-r；
(0,YD): casing is deformed the coordinate of front D point, wherein YD=-r；
Seeing shown in accompanying drawing 5, during measuring, electromotor can be at trial condition, electromotor
The inertia force that rotor produces is installed joint 5 with aerodynamic loading by four and is delivered to engine crankcase 10
On, four laser displacement sensors 6 can deform to engine crankcase 10 is produced by Real-time Collection
Amount.Assume that the symmetrical geometry of engine crankcase 10, material are evenly distributed, thus it is by four
The change of geometry can occur after the individual active force installed at joint 5, circle become oval,
The output making four laser displacement sensors 6 changes, it is possible to obtain following parameter:
(XA', 0): casing is deformed the coordinate that rear A ' puts, wherein XA'=XA+ΔXA；
(0,YB'): casing is deformed the coordinate that rear B ' puts, wherein YB'=YB+ΔYB；
(XC', 0): casing is deformed the coordinate that rear C ' puts, wherein XC'=XC+ΔXC；
(0,YD'): casing is deformed the coordinate that rear D ' puts, wherein YD'=YD+ΔYD；
ΔXA: casing is deformed the exporting change amount of the optical ranging sensor at rear A；
ΔYB: casing is deformed the exporting change amount of the optical ranging sensor at rear B；
ΔXC: casing is deformed the exporting change amount of the optical ranging sensor at rear C；
ΔYD: casing is deformed the exporting change amount of the optical ranging sensor at rear D；
Wherein, A, B, C, D represent the measurement point of four optical ranging sensors respectively；
Pass through above-mentioned parameter, it is possible to obtain engine crankcase 10 be deformed after geometric shape parameters:
(X0,Y0): elliptical center O ' the coordinate in rectangular coordinate system XOY；
A: oval major semiaxis；
B: oval semi-minor axis；
Parameter (X0,Y0) and the solution process of a, b be:
When engine crankcase 10 does not produces geometry deformation, its profile is the most circular, and the center of circle is O,
Radius is r, and in rectangular coordinate system XOY, circumference equation is:
X2+Y2=r2
After engine crankcase 10 produces geometry deformation, its appearance profile becomes oval, and center is O ',
Major semiaxis is a, and semi-minor axis is b, and the coordinate of center O ' is (X0,Y0), then oval Zhou Fangcheng is:
The coordinate of A ', B ', C ' and D ' is substituted into oval Zhou Fangcheng, i.e. can get casing through resolving
Produce the center displacement (X after geometry deformation0,Y0) and contour shape parameter a, b, as follows:
Above-mentioned calculating process is to be completed by the software in industrial computer, and accompanying drawing 6 show software
Flow chart, this software is write on Microsoft Visual Studio 2010 platform and is formed.
Center displacement (the X of the engine crankcase 10 by obtaining0,Y0) and contour shape parameter a, b,
The change of engine crankcase 10 geometry in the course of the work can be obtained intuitively, thus for sending out
The structure of motivation casing 10 is improved provides one to measure measuring technology support with optimizing to design.
Claims (3)
1., for measuring a device for the geometry deformation of large-sized annular casing class part, its feature exists
In: in this device, for four peaces being on same cross section on engine crankcase (10) outer wall
Dress joint (5), arranges four contactless optical ranging sensors (6), monitors each peace respectively
The stress deformation situation at dress joint (5) place；Optical ranging sensor (6) is placed in installation joint (5)
Periphery, the measuring beam of two optical ranging sensors (6) to distribution is overlapped, and position
Saved determined by (5) through engine crankcase (10) center to two installations of distribution in surveying
Straight line on；Two optical ranging sensors (6) are arranged on by attitude-adjusting system (2)
On left side column (3), by another two optical ranging sensors (6) by attitude-adjusting system (2)
It is arranged on right side uprights (4)；Attitude-adjusting system (2) is by D translation platform and one-dimensional rotation
Platform forms, and D translation platform is arranged on one-dimensional turntable, the rotating shaft of one-dimensional turntable and electromotor
The cross section at four installation joint (5) places on casing (10) outer wall is vertical；Left side column (3)
It is fixed on base (7) by bent plate (9) respectively with right side uprights (4), and left side column
(3) distance and between right side uprights (4) can be according to the radial direction of engine crankcase to be measured (10)
Size is adjusted, and the bottom of base (7) is provided with the adjustment for adjusting base (7) level
Cushion block (8).
Geometry deformation for measuring large-sized annular casing class part the most according to claim 1
Device, it is characterised in that: optical ranging sensor (6) is fixed on attitude-adjusting system (2)
D translation platform on installation table top (12) on；The one-dimensional turntable of attitude-adjusting system (2)
It is arranged on left side column (3) and right side uprights (4) by a triangular support plate (1)；
Being drilled with arc groove (13) on triangular support plate (1), one-dimensional turntable passes through bolt and circular arc
Groove (13) connects, to adjust the orientation of one-dimensional turntable.
Geometry deformation for measuring large-sized annular casing class part the most according to claim 1
Device, it is characterised in that: be furnished with three regulations on the D translation platform of attitude-adjusting system (2)
Handle (11), the displacement that can carry out on three directions manually regulates；Attitude-adjusting system (2)
One-dimensional turntable on be furnished with regulation handle (11), the manual regulation of angle can be carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305954.2A CN105841627A (en) | 2016-05-10 | 2016-05-10 | Apparatus for measuring geometric deformation of large-size annular casing type part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305954.2A CN105841627A (en) | 2016-05-10 | 2016-05-10 | Apparatus for measuring geometric deformation of large-size annular casing type part |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404412A (en) * | 2016-09-28 | 2017-02-15 | 中国航空工业集团公司北京航空精密机械研究所 | Device for measuring the eccentric position of the aero-engine bearing holder |
| CN106595446A (en) * | 2016-11-23 | 2017-04-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Eccentricity correction device for aeroengine rotating body |
| CN106769005A (en) * | 2016-12-06 | 2017-05-31 | 重庆理工大学 | Wet clutch hub fast state deflection test measurement method |
| CN109738283A (en) * | 2018-12-10 | 2019-05-10 | 内蒙古第一机械集团股份有限公司 | A kind of measuring system and measurement method of the loaded deflection of gear |
| CN112815850A (en) * | 2021-02-26 | 2021-05-18 | 中国工程物理研究院机械制造工艺研究所 | Cylinder pose measuring method and device |
| CN113547385A (en) * | 2021-08-06 | 2021-10-26 | 中国航发沈阳黎明航空发动机有限责任公司 | Online measurement compensation method for thin-wall annular part |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404412A (en) * | 2016-09-28 | 2017-02-15 | 中国航空工业集团公司北京航空精密机械研究所 | Device for measuring the eccentric position of the aero-engine bearing holder |
| CN106595446A (en) * | 2016-11-23 | 2017-04-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Eccentricity correction device for aeroengine rotating body |
| CN106595446B (en) * | 2016-11-23 | 2019-05-17 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of eccentric alignment device of aero-engine rotary body |
| CN106769005A (en) * | 2016-12-06 | 2017-05-31 | 重庆理工大学 | Wet clutch hub fast state deflection test measurement method |
| CN109738283A (en) * | 2018-12-10 | 2019-05-10 | 内蒙古第一机械集团股份有限公司 | A kind of measuring system and measurement method of the loaded deflection of gear |
| CN112815850A (en) * | 2021-02-26 | 2021-05-18 | 中国工程物理研究院机械制造工艺研究所 | Cylinder pose measuring method and device |
| CN113547385A (en) * | 2021-08-06 | 2021-10-26 | 中国航发沈阳黎明航空发动机有限责任公司 | Online measurement compensation method for thin-wall annular part |
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Application publication date: 20160810 |
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