CN106091879A - A kind of thin-wall curved-surface parts measurement method - Google Patents
A kind of thin-wall curved-surface parts measurement method Download PDFInfo
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- CN106091879A CN106091879A CN201610389786.XA CN201610389786A CN106091879A CN 106091879 A CN106091879 A CN 106091879A CN 201610389786 A CN201610389786 A CN 201610389786A CN 106091879 A CN106091879 A CN 106091879A
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- thin
- wall curved
- surface part
- film
- measurement
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
- G01B5/008—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points using coordinate measuring machines
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of thin-wall curved-surface parts measurement method, first by thin-wall curved-surface part modeling；Redesign inspection frock；Thin-wall curved-surface part is placed on inspection man load onto, spreads film above, the negative pressure of certain condition will be pumped in film；Make reference by the point on Contacting three coordinates measurement machine measurement film with model, calculate strain according to air pressure P；Actual deviation by strain and film thickness compensation calculation tested thin-wall curved-surface part, it is achieved the measurement of thin-wall curved-surface part.The measuring method uniform force of described thin-wall curved-surface part is controlled, it is not easy to measured thin-wall curved-surface part is damaged by pressure, and without measurement dead angle, data are accurate, and can realize that thin-wall curved-surface part is measured comprehensively.
Description
Technical field
The present invention relates to the measuring method of part, particularly relate to a kind of thin-wall curved-surface parts measurement method.
Background technology
At industrial department, for saving material, mitigating weight and widely apply thin-wall part to do housing, thin-walled parts has easily one-tenth
Type processing, low cost and be easy to the advantages such as batch production, but it is easily deformed in forming process, causes machining accuracy to be difficult to protect
Card, makes troubles to measurement.It is typically employed in frock and presses mode and measure, i.e. be pressed in part outer surface with briquetting and use
Three coordinate measuring engine measurement, but the thin-walled parts secondary deformation that the method is measured because unbalance stress is easily caused, thus cause
Measure error, and the little fragile material of some elastic modelling quantity is pressed in the surface of thin-walled parts and easily damages thin-walled parts by pressure and cause report
Useless.
Content of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of thin-wall curved-surface parts measurement method, by thin-wall curved-surface
Part is placed on inspection man and loads onto, and at the film in uniform thickness of layer overlay above, will be pumped into the negative pressure of certain condition in film, thin
Wall curved surface part tightly fits in inspection man under homogeneous atmosphere pressure and loads onto.
To this end, the invention provides the measuring method of thin-wall curved-surface part, comprise the steps:
S1, by thin-wall curved-surface part modeling；
S2, design inspection frock；
S3, thin-wall curved-surface part is placed on inspection man loads onto, spread film above, be pumped into certain condition by film
Negative pressure；
S4, with model make reference by Contacting three coordinates measurement machine measurement film on point, according to air pressure P calculate should
Become；
S5, the actual deviation by strain and film thickness compensation calculation tested thin-wall curved-surface part, it is achieved thin-wall curved-surface
Parts measurement.
Further, in described step S1, the measured theoretical curved surface of design thin-walled curved surface part is as measurement reference
Model.
Further, in described step S2, inspection man loads onto and leaves benchmark and be convenient for measuring for setting up coordinate system.
Described benchmark can have a variety of, such as three perpendicular planes, 2 or a plane.
Further, described coordinate system is the one in cartesian coordinate system or spherical coordinate system selectively.
Further, in described step S2, after checking frock well according to modelling, with Contacting three coordinates measurement machine root
Whether reach design according to reference measurement inspection frock to require.
Further, in described step S3, thin-wall curved-surface part is placed on inspection man and loads onto, spread film above, make
Thin-wall curved-surface part and thin-walled fit tightly, film used palpus equal thickness, and film must be taped against the edge of thin-wall curved-surface part
Outward, outside the edge of thin-wall curved-surface part, film and inspection frock glue are fixed.
Further, in described step S3, film side is fixedly installed a gland, gland is passed through film, Gu
Determining head and passing through tracheae and Pressure gauge connection vavuum pump, film surrounding adhesive glue is fixing prevents gas leakage, is extracted into design by film
Pressure P, atmospheric pressure makes tested thin-wall curved-surface part generation elastic deformation be close to inspection man to load onto.
Further, described step S4 is with S5, measures film, measuring basis and measurement with Contacting three coordinates measurement machine
The benchmark of inspection frock is consistent, obtains spatial point coordinate data, because air pressure stress is very uniform, when tested thin-wall curved-surface part is close to
When inspection man loads onto, calculating the strain δ 1 of tested thin-wall curved-surface part according to pressure P, the strain δ 2 of film, by the quilt of model
Measure theory curved surface offsets, and deviant is that film thickness deducts δ 1 and δ 2, then by by measurement space point coordinate data and mould
In type, the point coordinate data of correspondence position is subtracted each other and is measured deviation value.
Additionally, the convex surface of tested thin-wall curved-surface part and the deviation value of concave surface can be measured according to the method, tested thin
The convex surface data of wall curved surface part and concave surface data can inversely draw the thickness in the middle of thin-wall curved-surface part, realize that part is comprehensive
Measurement.
The measuring method uniform force of the described thin-wall curved-surface part that the present invention provides is controlled, it is not easy to measured thin-walled
Curved surface part damages by pressure, and without measurement dead angle, data are accurate, and can realize that thin-wall curved-surface part is measured comprehensively.
Brief description
The structural representation of measurement apparatus in a kind of thin-wall curved-surface parts measurement method that Fig. 1 provides for the present invention, wherein:
1-thin-wall curved-surface part, 2-checks frock, 3-film, 4-Contacting three coordinates measurement machine, 5-gland, 6-gas
Pipe.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the invention are described in detail.
Referring to Fig. 1, the present invention provides a kind of thin-wall curved-surface parts measurement method, comprises the steps:
S1, thin-wall curved-surface part 1 is modeled；
S2, design inspection frock 2；
S3, thin-wall curved-surface part 1 is placed on inspection frock 2, spread film 3 above, in film 3, be pumped into certain condition
Negative pressure；
S4, making reference, with model, the point measuring on film by Contacting three coordinates measurement machine 4, calculating according to air pressure P should
Become；
S5, the actual deviation by strain and film thickness compensation calculation tested thin-wall curved-surface part 1, it is achieved thin-wall curved-surface
The measurement of part 1.
In described step S1, the measured theoretical curved surface of design thin-walled curved surface part 1 is as the model of measurement reference.
In described step S2, inspection frock 2 leaves benchmark and is convenient for measuring for setting up coordinate system.
Described benchmark can have a variety of, such as three perpendicular planes, 2 or a plane.
Described coordinate system is the one in cartesian coordinate system or spherical coordinate system selectively.
In described step S2, after checking frock 2 well according to modelling, with Contacting three coordinates measurement machine 4 according to benchmark
Whether measurement inspection frock 2 reaches design requires.
In described step S3, thin-wall curved-surface part 1 is placed in inspection frock 2, spreads film 3 above, make Thin Walled Curved
Surface parts 1 fits tightly with thin-walled 3, film 3 used palpus equal thickness, and film 3 must be taped against the edge of thin-wall curved-surface part 1
Outward, outside the edge of thin-wall curved-surface part 1, film 3 and inspection frock 2 are fixed by glue.
In described step S3, film 3 limit is fixedly installed a gland 5, gland 5 is passed through film 3, gland 5
Connecting vavuum pump by tracheae 6 and Pressure gauge, film 3 surrounding adhesive glue is fixing prevents gas leakage, is extracted into design in film 3
Pressure P, atmospheric pressure makes tested thin-wall curved-surface part 1 occur elastic deformation to be close in inspection frock 2.
Described step S4, with S5, measures film 3, measuring basis and measurement inspection man with Contacting three coordinates measurement machine 4
The benchmark of dress is consistent, obtains spatial point coordinate data, because air pressure stress is very uniform, when inspection is close to by tested thin-wall curved-surface part 1
When testing in frock 2, calculate the strain δ 1 of tested thin-wall curved-surface part 1 according to pressure P, the strain δ 2 of film 3, tested by model
Amount theoretical curved surface skew, deviant is that film thickness deducts δ 1 and δ 2, then by by measurement space point coordinate data and model
The point coordinate data of upper correspondence position is subtracted each other and is measured deviation value.
Additionally, the convex surface of tested thin-wall curved-surface part and the deviation value of concave surface can be measured according to the method, tested thin
The convex surface data of wall curved surface part and concave surface data can inversely draw the thickness in the middle of thin-wall curved-surface part, realize that part is comprehensive
Measurement.
To sum up, the measuring method uniform force of described thin-wall curved-surface part that the present invention provides is controlled, it is not easy to tested
Amount thin-wall curved-surface part damages by pressure, and without measurement dead angle, data are accurate, and can realize that thin-wall curved-surface part is measured comprehensively.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should cover within protection scope of the present invention.
Claims (8)
1. a thin-wall curved-surface parts measurement method, it is characterised in that comprise the steps:
S1, by thin-wall curved-surface part modeling；
S2, design inspection frock；
S3, thin-wall curved-surface part is placed on inspection man loads onto, spread film above, the negative of certain condition in film, will be pumped into
Pressure；
S4, with model make reference by Contacting three coordinates measurement machine measurement film on point, according to air pressure P calculate strain；
S5, the actual deviation by strain and film thickness compensation calculation tested thin-wall curved-surface part, it is achieved thin-wall curved-surface part
Measurement.
2. a kind of thin-wall curved-surface parts measurement method according to claim 1, it is characterised in that in described step S1, if
The measured theoretical curved surface of meter thin-wall curved-surface part is as the model of measurement reference.
3. a kind of thin-wall curved-surface parts measurement method according to claim 1, it is characterised in that in described step S2, inspection
Test and leave benchmark in frock and be convenient for measuring for setting up coordinate system.
4. a kind of thin-wall curved-surface parts measurement method according to claim 3, it is characterised in that described coordinate system has selection
Ground is the one in cartesian coordinate system or spherical coordinate system.
5. a kind of thin-wall curved-surface parts measurement method according to claim 3, it is characterised in that in described step S2, root
After checking frock well according to modelling, check frock whether to reach design with Contacting three coordinates measurement machine according to reference measurement and want
Ask.
6. a kind of thin-wall curved-surface parts measurement method according to claim 1, it is characterised in that in described step S3, will
Thin-wall curved-surface part is placed on inspection man and loads onto, and spreads film above, makes thin-wall curved-surface part and thin-walled fit tightly, used thin
Film must equal thickness, and film must be taped against outside the edge of thin-wall curved-surface part, the edge of thin-wall curved-surface part outside by film with
Inspection frock glue is fixed.
7. a kind of thin-wall curved-surface parts measurement method according to claim 1, it is characterised in that in described step S3,
Being fixedly installed a gland in film side, gland being passed through film, gland passes through tracheae and Pressure gauge connects vavuum pump, thin
Film surrounding adhesive glue is fixing prevents gas leakage, will be extracted into the pressure P of design in film, and atmospheric pressure makes tested thin-wall curved-surface part send out
Raw elastic deformation is close to inspection man and is loaded onto.
8. a kind of thin-wall curved-surface parts measurement method according to claim 1, it is characterised in that described step S4 and S5
In, measure film with Contacting three coordinates measurement machine, measuring basis is consistent with the benchmark of measurement inspection frock, obtains spatial point and sits
Mark data, because air pressure stress is very uniform, when tested thin-wall curved-surface part be close to inspection man load onto when, according to pressure P calculate by
Surveying the strain δ 1 of thin-wall curved-surface part and the strain δ 2 of film, by the measured theoretical curved surface skew of model, deviant is film
Thickness deducts δ 1 and δ 2, then by the point coordinate data of measurement space point coordinate data and correspondence position on model is subtracted each other survey
Measure deviation value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610389786.XA CN106091879A (en) | 2016-06-03 | 2016-06-03 | A kind of thin-wall curved-surface parts measurement method |
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| CN201610389786.XA CN106091879A (en) | 2016-06-03 | 2016-06-03 | A kind of thin-wall curved-surface parts measurement method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705930A (en) * | 2017-03-21 | 2017-05-24 | 北方工业大学 | Reconfigurable tool for deformation test of thin-wall curved surface part |
| CN109387138A (en) * | 2017-08-02 | 2019-02-26 | 刘新 | A kind of novel thin wall pieces measurement method |
| CN110118533A (en) * | 2018-02-05 | 2019-08-13 | 上海微电子装备（集团）股份有限公司 | A kind of 3 D detection method and detection device |
| CN110978470A (en) * | 2019-12-12 | 2020-04-10 | 航天特种材料及工艺技术研究所 | System and method for measuring profile of weak-rigidity thin-wall composite material component |
| CN114310202A (en) * | 2022-03-14 | 2022-04-12 | 成都飞机工业（集团）有限责任公司 | Method for processing honeycomb core part without adhesive tape bonding |
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| CN102159919A (en) * | 2008-09-30 | 2011-08-17 | 空中客车营运有限公司 | Method for measuring and/or testing waviness of planar textile |
| CN104476109A (en) * | 2014-09-25 | 2015-04-01 | 北京航星机器制造有限公司 | Skin structure accurate positioning machining method |
| CN105444721A (en) * | 2015-12-01 | 2016-03-30 | 北京星航机电装备有限公司 | Molded surface detection method for non-rigid irregular composite material component |
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2016
- 2016-06-03 CN CN201610389786.XA patent/CN106091879A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159919A (en) * | 2008-09-30 | 2011-08-17 | 空中客车营运有限公司 | Method for measuring and/or testing waviness of planar textile |
| CN104476109A (en) * | 2014-09-25 | 2015-04-01 | 北京航星机器制造有限公司 | Skin structure accurate positioning machining method |
| CN105444721A (en) * | 2015-12-01 | 2016-03-30 | 北京星航机电装备有限公司 | Molded surface detection method for non-rigid irregular composite material component |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705930A (en) * | 2017-03-21 | 2017-05-24 | 北方工业大学 | Reconfigurable tool for deformation test of thin-wall curved surface part |
| CN106705930B (en) * | 2017-03-21 | 2019-02-19 | 北方工业大学 | Reconfigurable tool for deformation test of thin-wall curved surface part |
| CN109387138A (en) * | 2017-08-02 | 2019-02-26 | 刘新 | A kind of novel thin wall pieces measurement method |
| CN110118533A (en) * | 2018-02-05 | 2019-08-13 | 上海微电子装备（集团）股份有限公司 | A kind of 3 D detection method and detection device |
| CN110978470A (en) * | 2019-12-12 | 2020-04-10 | 航天特种材料及工艺技术研究所 | System and method for measuring profile of weak-rigidity thin-wall composite material component |
| CN110978470B (en) * | 2019-12-12 | 2021-10-19 | 航天特种材料及工艺技术研究所 | System and method for measuring profile of weak-rigidity thin-wall composite material component |
| CN114310202A (en) * | 2022-03-14 | 2022-04-12 | 成都飞机工业（集团）有限责任公司 | Method for processing honeycomb core part without adhesive tape bonding |
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Application publication date: 20161109 |