CN109117602A - Large scale covering digitizing detection method based on laser tracker - Google Patents
Large scale covering digitizing detection method based on laser tracker Download PDFInfo
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- CN109117602A CN109117602A CN201811205708.5A CN201811205708A CN109117602A CN 109117602 A CN109117602 A CN 109117602A CN 201811205708 A CN201811205708 A CN 201811205708A CN 109117602 A CN109117602 A CN 109117602A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
Large scale covering digitizing detection method based on laser tracker is handled skin part MBD digital model first with CATIA software, generates detection feature, and the pattern measurement point for indicating measurement parameter is arranged in detection feature after extraction；Skin part is positioned and is retained on fixing platform again；DATA REASONING is carried out to skin part using detection system, analyzes software by the way that measured data is compared with digital-to-analogue gross data, and then be fitted to the two, to establish the functional relation of measurement data Yu theoretical value intermode, building measurement coordinate system；Again by detection system, according to measure planning file, the measurement data acquisition work of detection project is completed one by one；The measurement data of middle acquisition and theoretical digital-to-analogue are fitted and obtain analysis result with comparison by data processing software, exhibit mass property and examining report is exported in the form of three-dimensional feature simultaneously, Measurement reliability and detection efficiency are effectively improved, provides data for process optimization.
Description
Technical field
The present invention relates to covering detection technique field more particularly to a kind of large scale covering numbers based on laser tracker
Change detection method.
Background technique
Aircraft skin class part is mainly that light sheet material is formed by lock pressure or pull-up technique realization theory external surface, then is led to
It crosses milling or mechanical processing technique realizes the molding that covering sink with aircraft configuration contour structure, aircraft skin class part has ruler
The features such as very little big, theoretical external surface complicated (double-curved profile), more sagging structure, and covering class part is aircraft surfaces structure,
The aerodynamic configuration of aircraft is directly affected, therefore extremely important to the quality control and detection of covering class part.
The detection of aircraft skin part is used at present and is detected in die face pad pasting, by judging covering and die face
Compactness to judge whether skin shape face qualified；The sagging structure and lead to the hole site of covering use gelatin figure or chemical milling template
Detection is compared, judges whether sagging structure closes with lead to the hole site by the deviation of observation covering and gelatin figure or chemical milling template
Lattice；This traditional detection method is only applicable to the simple single-curved surface covering of theoretical shape, because for hyperboloid theory shape
Chemical milling template can not be made with gelatin figure, and hyperboloid die shape processing it is extremely difficult；Such detection method is one simultaneously
Qualitative detection means are covered, not only detection accuracy is low, and human factor is more when measurement, and measurement error is larger, and measurement result is unstable
It is fixed.With the development of aeronautical technology, Aerodynamic Configuration of Aireraft face becomes increasingly complex, hyperboloid, even more curved surfaces covering increasingly
More, existing detection method can not meet the demand of aircraft manufacturing, and aircraft has the characteristics that be difficult to produce in enormous quantities,
For a model aircraft be equipped with a whole set of covering detection mold the cost is relatively high.
Along with the development of Digitized manufacturing, current most of skin parts use vacuum suction numerical control processing or covering mirror
As milling flexible clamping Digitized manufacturing, the product structure that the optimization of Digitized manufacturing process is necessarily dependent upon actual processing is real
Border data volume, and qualitatively detection means can not provide accurate measured data, can not provide for Digitized manufacturing process optimization
Data supporting, it is clear that can not meet the needs of Digitized Manufacturing Technology development.
Summary of the invention
Technical problem solved by the invention is to provide a kind of large scale covering digitlization inspection based on laser tracker
Survey method, to solve the disadvantage in above-mentioned background technique.
Technical problem solved by the invention is realized using following technical scheme:
Large scale covering digitizing detection method based on laser tracker, the specific steps are as follows:
1) covering digital-to-analogue pre-processes
Skin part MBD digital model is handled using CATIA software, generates detection feature, and inspection after extraction
The pattern measurement point being arranged in feature for indicating measurement parameter is surveyed, provides gross data for subsequent measurement:
A, detection feature is extracted
Substance feature can not be detected the analysis soft SA identification of examining system in covering digital-to-analogue, therefore need to turn covering digital-to-analogue in CATIA
Be changed to the analysis identifiable point, line, surface feature of soft SA, the detection feature of extraction by as the gross data in detection process,
For data analysis and process；Detection feature includes shape, profile, the sagging and hole location of covering；
B, planning survey path
Since the line and region feature of extraction are not the identifiable measurement parameters of laser tracker, need in detection feature after extraction
Geological information for indicating measurement parameter, i.e. pattern measurement point are set；
2) part positioning and fixing
Skin part is positioned and is retained on fixing platform, skin part is fixed and supported, for preventing covering from producing because of self weight
Raw deformation error brings measurement result into, while applying certain pressure to covering by sandbag, the band etc. that fraps, to guarantee that covering is surveyed
Theoretical extended state is approached during amount as far as possible；The detection of single-curved surface covering is using examining mold to be held, by covering theory
The type face paste of external surface and mold is closed, and the profile of covering is aligned with the groove on mold, is finally consolidated with sandbag, the band etc. that fraps
It is fixed；Hyperboloid covering detects covering under lathe clamp position using the covering of mirror image Milling Machining；
3) digitized measurement and implementation
Digitized measurement and implementation are divided into following four part:
I, installation detecting system
Detection system includes laser tracker and T-SCAN, and software includes pretreatment software, Survey Software, analysis soft SA and number
According to processing software, first by pretreatment software independent process theory digital-to-analogue under CATIA platform, measure planning file is formed,
Then by measure planning file import Survey Software and analysis soft SA in, by Survey Software, analysis soft SA and laser with
Track instrument, T-SCAN interact measurement, analysis and the visualization display for realizing data；
II, measure planning file import
Measure planning file is imported into Survey Software, project is will test and intuitively expresses, the progress of guidance detection work；
III, the building of measurement field
It is measured by the datum hole to tooling or mirror image milling machine tool, forms datum hole measured data；Analysis soft SA passes through
The measured data of datum hole is compared with digital-to-analogue gross data, and then the two is fitted, with establish measurement data with
The functional relation of theoretical value intermode will utilize this functional relation in subsequent measurement, measurement data is projected to theoretical digital-to-analogue, from
And establish measurement coordinate system；
IV, measurement
Using measuring system, according to measure planning file, the measurement data acquisition work of detection project is completed one by one, measurement is implemented
Process is broadly divided into light lead and two steps of surface sweeping:
Light lead: measure planning file is imported, and Survey Software reads each theoretical measurement point coordinate value, and by theoretical measurement point coordinate
Value is converted to corresponding actual measurement coordinate, passes through direction after choosing pattern measurement point to drive laser tracker to implement light lead
It chooses a little, light beam is mapped to the position of theoretical measurement point by laser tracker, to realize the determination of measurement position；
Scanning: it in light lead position, is scanned using T-Scan in the guide point near zone, to obtain the measurement of scanning area
Point cloud, measuring beam is vertical with measured zone in measurement process, carries out slow as far as possible when through-hole scanning, and it is vertical to scan track cross
Directly, scanning element cloud point is fallen in as far as possible on the sideline of through-hole；
4) data analysis and processing
After measurement is implemented, by the way that spatial data points cloud and theoretical digital-to-analogue to be fitted and compare, correspondingly-sized deviation is obtained
And shape position error and be compared with tolerance value, objective and accurate analysis is obtained as a result, simultaneously in the form of three-dimensional feature
Intuitively reflect product quality characteristics；
Theoretical digital-to-analogue and measurement data are imported in data processing software, are established matching relationship in the case where measuring coordinate system, are counted
According to analysis and processing, dimensional discrepancy and Form and position error is obtained, and final result visualization is shown, obtain check conclusion；
Detection data processing method:
1. data compaction: being handled using Survey Software measurement pointcloud, extract and be located at external surface, contour edge, standard round
Kong Kongxin, non-standard through-hole hole sideline, the point cloud point between sagging detection line, fitting operation obtain best fit point up and down；
2. data are analyzed: Survey Software obtains match point to the bias vector between theoretical model according to matching relationship automatically；Hand
Dynamic input shape allowable tolerance value, automatically compares and analyzes each bias vector by Survey Software, obtains overproof area three-dimensional
Effect diagram；Survey Software counts overproof point and indicates, to be further processed；
3. overproof repetition measurement: carrying out repetition measurement to overproof point, and carry out Data Analysis Services according to the above method；
5) survey report exports
Examining report content includes detection characteristic, tolerance, test point position data, overproof statistics, range error, three-dimensional error
The position etc. of figure and error band on part, and ultimately form complete examining report.
The utility model has the advantages that the reliability of measurement not only can be improved using covering digitizing detection method by the present invention and detection is imitated
Rate, measurement measured data can be used for the industrial analysis to processing, provide data for process optimization；It simultaneously can also be by the reason of covering
By dimensional discrepancy visual representation under aircraft global coordinate system of external surface, appearance profile, lead to the hole site and sagging locations of structures,
Be conducive to carry out assembly coordination according to actual deviation situation in covering assembling process.
Detailed description of the invention
Fig. 1 is the flow diagram of presently preferred embodiments of the present invention.
Fig. 2 is the covering digital-to-analogue pretreatment process schematic diagram in presently preferred embodiments of the present invention.
Fig. 3 is the Data Analysis Services flow diagram in presently preferred embodiments of the present invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to the large scale covering digitizing detection method based on laser tracker of Fig. 1, the specific steps are as follows:
1) covering digital-to-analogue pre-processes
The pretreated process of covering digital-to-analogue is as shown in Fig. 2, its major function is to extract detection feature and planning survey path:
A, detection feature is extracted
Substance feature can not be detected the analysis soft SA identification of examining system in covering digital-to-analogue, therefore need to turn covering digital-to-analogue in CATIA
Be changed to the analysis identifiable point, line, surface feature of soft SA, the detection feature of extraction by as the gross data in detection process,
For data analysis and process；Detection feature includes shape, profile, the sagging and hole location of covering；
B, planning survey path
Since the line and region feature of extraction are not the identifiable measurement parameters of laser tracker, need in detection feature after extraction
Geological information for indicating measurement parameter, i.e. pattern measurement point are set；
2) part positioning and fixing
Skin part positioning and fixing are to fix and support skin part by fixing platform, for preventing covering from producing because of self weight
Raw deformation error brings measurement result into, while applying certain pressure to covering by sandbag, the band etc. that fraps, to guarantee that covering is surveyed
Theoretical extended state is approached during amount as far as possible；The detection of single-curved surface covering is using examining mold to be held, by covering theory
The type face paste of external surface and mold is closed, and the profile of covering is aligned with the groove on mold, is finally consolidated with sandbag, the band etc. that fraps
It is fixed；Hyperboloid covering detects covering under lathe clamp position using the covering of mirror image Milling Machining；
3) digitized measurement and implementation
Digitized measurement and implementation are divided into following four part:
I, installation detecting system
Detection system includes laser tracker and T-SCAN, and software includes pretreatment software, Survey Software, analysis soft SA and number
According to processing software, first by pretreatment software independent process theory digital-to-analogue under CATIA platform, measure planning file is formed,
Then by measure planning file import Survey Software and analysis soft SA in, by Survey Software, analysis soft SA and laser with
Track instrument, T-SCAN interact measurement, analysis and the visualization display for realizing data；
II, measure planning file import
Measure planning file is imported into Survey Software, project is will test and intuitively expresses, the progress of guidance detection work；
III, the building of measurement field
It is measured by the datum hole to tooling or mirror image milling machine tool, forms datum hole measured data；Analysis soft SA passes through
The measured data of datum hole is compared with digital-to-analogue gross data, and then is fitted to the two, to establish measurement data and reason
By the functional relation between digital-to-analogue, this functional relation will be utilized in subsequent measurement, measurement data is projected to theoretical digital-to-analogue, thus
Establish measurement coordinate system；
IV, measurement
Using measuring system, according to measure planning file, the measurement data acquisition work of detection project is completed one by one, measurement is implemented
Process is broadly divided into light lead and two steps of surface sweeping:
Light lead: measure planning file is imported, and Survey Software reads each theoretical measurement point coordinate value, and by theoretical measurement point coordinate
Value is converted to corresponding actual measurement coordinate, passes through direction after choosing pattern measurement point to drive laser tracker to implement light lead
It chooses a little, light beam is mapped to the position of theoretical measurement point by laser tracker, to realize the determination of measurement position；
Scanning: it in light lead position, is scanned using T-Scan in the guide point near zone, to obtain the measurement of scanning area
Point cloud, measuring beam is vertical with measured zone in measurement process, carries out slow as far as possible when through-hole scanning, and it is vertical to scan track cross
Directly, scanning element cloud point is fallen in as far as possible on the sideline of through-hole；
4) data analysis and processing
After measurement is implemented, by the way that spatial data points cloud and theoretical digital-to-analogue to be fitted and compare, correspondingly-sized deviation is obtained
And shape position error and be compared with tolerance value, objective and accurate analysis is obtained as a result, simultaneously in the form of three-dimensional feature
Intuitively reflect product quality characteristics；
Theoretical digital-to-analogue and measurement data are imported in data processing software, are established matching relationship in the case where measuring coordinate system, are counted
According to analysis and processing, dimensional discrepancy and Form and position error is obtained, and final result visualization is shown, obtain check conclusion, such as
Shown in Fig. 3；
Detection data processing method:
1. data compaction: being handled using Survey Software measurement pointcloud, extract and be located at external surface, contour edge, standard round
Kong Kongxin, non-standard through-hole hole sideline, the point cloud point between sagging detection line, fitting operation obtain best fit point up and down；
2. data are analyzed: Survey Software obtains match point to the bias vector between theoretical model according to matching relationship automatically；Hand
Dynamic input shape allowable tolerance value, automatically compares and analyzes each bias vector by Survey Software, obtains overproof area three-dimensional
Effect diagram；Survey Software counts overproof point and indicates, to be further processed；
3. overproof repetition measurement: carrying out repetition measurement to overproof point, and carry out Data Analysis Services according to the above method；
5) survey report exports
Examining report content includes detection characteristic, tolerance, test point position data, overproof statistics, range error, three-dimensional error
The position etc. of figure and error band on part, and ultimately form complete examining report.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. the large scale covering digitizing detection method based on laser tracker, which is characterized in that specific step is as follows:
1) covering digital-to-analogue pre-processes
Skin part MBD digital model is handled using CATIA software, generates detection feature, and inspection after extraction
Survey the pattern measurement point being arranged in feature for indicating measurement parameter；
2) part positioning and fixing
Skin part is positioned and is retained on fixing platform；
3) digitized measurement and implementation
DATA REASONING is carried out to skin part using detection system, independent process is theoretical under CATIA platform by pretreatment software
Digital-to-analogue forms measure planning file, then imports measure planning file in Survey Software and analysis software, analysis software passes through
Measured data is compared with digital-to-analogue gross data, and then measured data and digital-to-analogue gross data are fitted, to establish
The functional relation of measurement data and theoretical value intermode, building measurement coordinate system；Again by detection system, according to measure planning text
Part completes the measurement data acquisition work of detection project one by one；
4) data analysis and processing
The measurement data acquired in step 3) and theoretical digital-to-analogue are fitted and are compared by data processing software, are obtained objective and accurate
Analysis as a result, reflecting product quality characteristics simultaneously with three-dimensional feature formal intuition, and export complete examining report.
2. the large scale covering digitizing detection method according to claim 1 based on laser tracker, which is characterized in that
In step 1), detection feature includes shape, profile, the sagging and hole location of covering.
3. the large scale covering digitizing detection method according to claim 1 based on laser tracker, which is characterized in that
In step 2, the detection of single-curved surface covering is closed the type face paste of covering theory external surface and mold using examining mold to be held,
The profile of covering is aligned fixation with the groove on mold.
4. the large scale covering digitizing detection method according to claim 1 based on laser tracker, which is characterized in that
In step 2, hyperboloid covering detects covering under lathe clamp position using the covering of mirror image Milling Machining.
5. the large scale covering digitizing detection method according to claim 1 based on laser tracker, which is characterized in that
In step 3), detection system includes laser tracker and T-SCAN.
6. the large scale covering digitizing detection method according to claim 5 based on laser tracker, which is characterized in that
In step 3), measured data is measured to obtain by detection system by the datum hole to tooling or mirror image milling machine tool.
7. the large scale covering digitizing detection method according to claim 6 based on laser tracker, which is characterized in that
Measurement implementation process separates light and two steps of surface sweeping:
Light lead: measure planning file is imported, and Survey Software reads each theoretical measurement point coordinate value, and by theoretical measurement point coordinate
Value is converted to corresponding actual measurement coordinate, passes through direction after choosing pattern measurement point to drive laser tracker to implement light lead
It chooses a little, light beam is mapped to the position of theoretical measurement point by laser tracker, to realize the determination of measurement position；
Scanning: it in light lead position, is scanned using T-Scan in the guide point near zone, to obtain the measurement of scanning area
Point cloud.
8. the large scale covering digitizing detection method according to claim 7 based on laser tracker, which is characterized in that
Measuring beam is vertical with measured zone in measurement process, carry out through-hole scanning when it is slow as far as possible, and scan track cross it is vertical, with
Scanning element cloud point is fallen in as far as possible on the sideline of through-hole.
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| CN110220476A (en) * | 2019-06-03 | 2019-09-10 | 西安飞机工业（集团）有限责任公司 | A kind of automatic method for fast measuring of aviation part based on 3 D laser scanning |
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| CN112525100A (en) * | 2020-11-20 | 2021-03-19 | 昌河飞机工业（集团）有限责任公司 | Detect frock of covering appearance |
| CN112710228A (en) * | 2020-11-30 | 2021-04-27 | 中国航空工业集团公司北京长城航空测控技术研究所 | Robot edge milling path planning system and method based on global measurement |
| CN112525108A (en) * | 2020-12-12 | 2021-03-19 | 江西洪都航空工业集团有限责任公司 | Method for detecting contour error of sheet part on line by adopting laser tracker |
| CN112949003A (en) * | 2021-03-31 | 2021-06-11 | 科世达(上海)机电有限公司 | Part measuring method, device, equipment and storage medium |
| CN113405485A (en) * | 2021-04-20 | 2021-09-17 | 北京机科国创轻量化科学研究院有限公司 | New surface quality diagnosis technology based on plastic deformation-aerodynamic cross theory |
| CN113865508A (en) * | 2021-09-28 | 2021-12-31 | 南京航空航天大学 | Automatic detection device and method for through hole rate of acoustic lining of honeycomb sandwich composite material |
| CN114777719A (en) * | 2022-03-21 | 2022-07-22 | 陕西飞机工业有限责任公司 | Tool detection method based on reverse scanning |
| CN114777719B (en) * | 2022-03-21 | 2023-12-22 | 陕西飞机工业有限责任公司 | Tooling detection method based on reverse scanning |
| CN114777651A (en) * | 2022-05-05 | 2022-07-22 | 东北大学 | Airplane surface assembly quality detection method based on digital twinning |
| CN114777651B (en) * | 2022-05-05 | 2024-01-26 | 东北大学 | Digital twinning-based aircraft surface assembly quality detection method |
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