CN111027134A - Method for realizing MBD-based inspection of aviation complex structural component - Google Patents
Method for realizing MBD-based inspection of aviation complex structural component Download PDFInfo
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Abstract
The invention belongs to the field of airplane digital manufacturing, and relates to a method for realizing an MBD-based inspection of an aviation complex structural part, which comprises the following steps: step 1, obtaining three-dimensional inspection model information; step 2, checking path planning; step 3, three-coordinate measurement and inspection; the invention uses software secondary development technology, adopts computer identification technology to replace manual inspection in the inspection process, directly detects the three-dimensional marking information and the associated geometric information of the part by feature identification of the three-dimensional model through software, obtains the geometric feature to be detected and the detailed geometric information composition thereof, and then completes product inspection by generating a measuring program through detection planning.
Description
Technical Field
The invention belongs to the field of airplane digital manufacturing. The method is mainly used for inspecting the aviation complex structural part based on the MBD, is used for solving the problem that inspection information on a three-dimensional model can be directly identified and acquired in an MBD inspection link, does not take a two-dimensional engineering drawing as an inspection basis any more, and achieves the application effects of time saving, high efficiency and great effort.
Background
With the development of the aircraft manufacturing technology, China aviation manufacturers comprehensively implement full three-dimensional MBD (model-based definition), namely three-dimensional product design information and manufacturing information are jointly defined into a three-dimensional digital model of a product, a three-dimensional label model is directly used as a manufacturing and inspection basis, the original working modes of three-dimensional design, three-dimensional numerical control processing and inspection based on a two-dimensional engineering drawing are changed, high integration, cooperation and fusion of product design, process tool design, part processing and assembly and part detection and inspection are thoroughly realized, and a design, manufacturing and inspection integrated application system based on the full three-dimensional MBD is established.
At present, in the inspection process of the aviation complex structural part based on the MBD, a three-dimensional model is used as the inspection basis, so that the manual inspection period is long, time and labor are wasted, and the inspection precision cannot be guaranteed.
Disclosure of Invention
The invention aims to solve the problems and provides a method for realizing the inspection of an aviation complex structural part based on MBD (moving bed diagnostics). by means of a software secondary development technology, a computer identification technology is adopted to replace manual inspection in the inspection process, three-dimensional labeling information and associated geometric information of a part are detected by directly identifying the characteristics of a three-dimensional model through software, the geometric characteristics to be detected and the detailed geometric information composition of the geometric characteristics are obtained, and then a measuring program is generated through detection planning to complete product inspection.
The technical scheme of the invention is that the inspection method for realizing the aviation complex structural part based on the MBD comprises the following steps:
step 1, obtaining three-dimensional inspection model information;
step 2, checking path planning;
and 3, three-coordinate measurement and inspection.
Preferably, the method for inspecting an aviation complex structural component based on MBD specifically includes the following steps of 1:
step 1.1, calling an API (application program interface) function of the CATIA by CATIA three-dimensional design software to extract geometric attribute, geometric characteristic, dimensional tolerance and form and position tolerance of a structural part to be tested from a three-dimensional inspection model;
step 1.2, classifying the geometric features, the dimensional tolerance and the geometric tolerance extracted in the step 1.1 according to the attributes of the geometric shapes to form inspection record files corresponding to different geometric shapes;
preferably, the inspection method for implementing an MBD-based aviation complex structural component includes the following specific steps in step 2:
step 2.1, reading the inspection record file in the disk through the CPU, and reading the attribute information associated with the geometric features to the memory line by line to form data structure information associated with the geometric features;
and 2.2, retrieving and matching the data structure information formed in the step 2.1 in a knowledge base, and directly generating a typical inspection path of the structural part.
Preferably, the inspection method for implementing an MBD-based aviation complex structural component includes the following specific steps in step 3:
3.1, directly importing the three-dimensional inspection model into simulation software of a three-coordinate measuring machine to realize synchronization of a three-dimensional data coordinate system of the three-coordinate measuring machine and a three-dimensional inspection model workpiece measurement coordinate system;
step 3.2, calling a program interface in the three-coordinate measuring machine through the CPU, automatically generating an actual inspection path planning scheme of the three-coordinate measuring machine from the typical inspection path formed in the step 2 through the interface,
and 3.3, automatically driving the probe to find a measuring position by the three-coordinate measuring machine according to the inspection path planning scheme and by combining the three-dimensional inspection model, measuring the structural member, and comparing the actual measured value with the corresponding theoretical value in the inspection record file one by one to obtain an actual error.
Preferably, in the step 3.3, the three-coordinate measuring machine selects a point to be detected on the structural member to perform measurement according to the inspection record file in the step 1.
Preferably, the inspection method for implementing the MBD-based aviation complex structural part further comprises the following steps: and generating a three-dimensional inspection model.
Preferably, the method for inspecting an aviation complex structural component based on MBD specifically includes: and marking MBD inspection specifications and specific inspection requirements on the step information of the three-dimensional process model to form a three-dimensional inspection model.
The method has the following advantages:
the invention is a full three-dimensional inspection based on MBD completely, does not need to take a two-dimensional engineering drawing as an inspection basis, and completes the identification and acquisition of three-dimensional model inspection information through CAA software secondary development technology. Through a system integration technology, the correlation between model tolerance and measurement items and the automatic conversion from an MBD (multi-dimensional display) model to a three-coordinate programming model are realized, and finally, three-coordinate equipment completes the digital inspection of the complex aviation structural part according to the measurement operation requirement. The inspection process is completely realized by a computer without manual intervention, the inspection efficiency is greatly improved, the conditions of missed inspection and false inspection are avoided, and the accuracy of the inspection result is ensured.
Drawings
FIG. 1 is a flow chart of an MBD-based aviation complex product inspection.
Detailed Description
The specific implementation process comprises the following steps:
firstly, according to the labeling specification and the inspection requirement based on MBD, the relevant detection information including the three-dimensional model is automatically obtained through a software identification technology.
And secondly, associating the geometric characteristics of the three-dimensional model by acquiring and integrating the inspection information to complete the definition of the three-dimensional inspection model based on the MBD.
And thirdly, selecting a proper detection mode and a detection tool according to different detection requirements to complete the formulation of a detection procedure.
And repeating the processes, planning the detection sequence according to the sequence of the detection procedures, and realizing the definition of the measurement process. According to the defined measuring process, a measuring plan is generated, corresponding three-coordinate measuring equipment is selected to measure the selected measuring items according to the measuring plan, a measuring point set is automatically generated on the curved surface according to the geometric tolerance in the three-dimensional label through software secondary development, the measuring point set is converted into a DMIS format which can be directly read by the three-coordinate measuring equipment, a measuring program is generated, the three-coordinate measuring equipment is used for measuring the automatically generated measuring points, automatic measurement is completely realized, the measuring result is output, the output measuring result value is analyzed and processed, a product detection report is obtained, and the detection of the product quality is completed.
The method comprises the following steps: three-dimensional inspection model generation
The three-dimensional inspection model is a three-dimensional digital model which is made aiming at an inspection process, the information of the inspection digital model mainly comprises geometric attributes, geometric characteristic information, dimensional tolerance information and form and position tolerance information, all the information can be obtained from each step of a structural part to be inspected in a machining process, the requirement of inspection specifications based on MBD and related auxiliary instructions are marked, and the three-dimensional process model is converted into the three-dimensional inspection model through the steps.
Step two: inspection information extraction
The method comprises the first step of extracting geometric attributes, geometric features, dimensional tolerances and form and position tolerances from a three-dimensional inspection model by calling related API functions through CATIA three-dimensional design software, wherein the geometric attributes and the geometric features, the dimensional tolerances and the form and position tolerances have one-to-many corresponding relations. The geometry-specific property refers in particular to the geometry description. The extraction of the geometric features includes only the extraction of the identification information and the verification information. The dimensional tolerance extracts only the dimensional information containing the tolerance requirement, including the dimensional name, the dimensional value, the dimensional type, the dimensional deviation, and the dimensional tolerance dependency characteristic element of the tolerance requirement. Form and position tolerance only extracts the characteristic elements including tolerance type, tolerance size and attachment.
And (3) classifying and storing the extracted geometric features, the dimensional tolerance and the geometric tolerance in a disk according to geometric attributes, storing the same geometric attributes in the same file of the disk, marking serial numbers in the file, storing different geometric attributes in different files of the disk, finally forming a test record file, and repeating the steps until all the geometric attributes on the three-dimensional test model are extracted.
Step three: inspection path planning
In order to improve the inspection efficiency of the complex aviation structural part, the inspection path needs to be planned to obtain the optimal inspection path. And opening the check record file in the disk through the CPU, and reading the attribute information associated with the geometric features line by line into the memory to form an associated geometric feature data structure. Since the knowledge base of the CATIA stores the typical inspection path of the aviation complex structural part, the typical inspection path of the example is directly generated by searching and matching the data structure information in the knowledge base until all the geometric characteristics are matched.
Step four: three coordinate measurement inspection
The three-dimensional inspection model is directly led into simulation software of a three-dimensional measuring machine, synchronization of a three-dimensional data coordinate system and a workpiece measurement coordinate system is achieved, a program interface in the three-dimensional measuring machine is called through a CPU, the three-dimensional inspection scheme automatically generates an actual inspection path planning scheme of the three-dimensional measuring machine through the interface, the three-dimensional measuring machine automatically drives a probe to find a measurement position according to the inspection path planning scheme and in combination with the three-dimensional inspection model, a point to be detected on a structural member product is measured, the actual measurement value is compared with a corresponding theoretical value in an inspection record file one by one according to the actual measurement value, an actual error is obtained, if the actual error is within a tolerance range, the measurement is qualified, and if the actual error is. And repeating the processes until the checking path planning scheme is completed, and generating a final first piece detection report. .
Claims (7)
1. An inspection method for realizing an MBD-based aviation complex structural part is characterized by comprising the following steps:
step 1, obtaining three-dimensional inspection model information;
step 2, checking path planning;
and 3, three-coordinate measurement and inspection.
2. The inspection method for realizing the MBD-based aviation complex structural component according to claim 1, wherein the step 1 specifically comprises the following steps:
step 1.1, calling an API (application program interface) function of the CATIA by CATIA three-dimensional design software to extract geometric shape attribute, geometric characteristic, dimensional tolerance and form and position tolerance of a structural part to be tested from a three-dimensional inspection model;
and step 1.2, classifying the geometric features, the dimensional tolerance and the form and position tolerance extracted in the step 1.1 according to the attributes of the geometric shapes to form inspection record files corresponding to different attributes of the geometric shapes.
3. The inspection method for realizing the MBD-based aviation complex structural component according to claim 1, wherein the step 2 specifically comprises the following steps:
step 2.1, reading the inspection record file in the disk through the CPU, and reading the attribute information associated with the geometric features to the memory line by line to form data structure information associated with the geometric features;
and 2.2, retrieving and matching the data structure information formed in the step 2.1 in a knowledge base, and directly generating a typical inspection path of the structural part to be inspected.
4. The inspection method for realizing the MBD-based aviation complex structural component according to claim 1, wherein the step 3 specifically comprises the following steps:
3.1, directly importing the three-dimensional inspection model into simulation software of a three-coordinate measuring machine to realize synchronization of a three-dimensional data coordinate system of the three-coordinate measuring machine and a three-dimensional inspection model workpiece measurement coordinate system;
3.2 calling a program interface in the three-coordinate measuring machine through the CPU, and automatically generating an actual inspection path planning scheme of the three-coordinate measuring machine from the typical inspection path formed in the step 2 through the interface;
and 3.3, automatically driving the probe to find a measuring position by the three-coordinate measuring machine according to the inspection path planning scheme and by combining the three-dimensional inspection model, measuring the structural member, and comparing the actual measured value with the corresponding theoretical value in the inspection record file one by one to obtain an actual error.
5. An inspection method for realizing MBD-based aeronautical complex structural parts according to claim 4, characterized in that in step 3.3, the coordinate measuring machine is based on the inspection log file in step 1.
6. An inspection method for the realization of MBD based aeronautical complex structural components according to claim 1, characterized in that it comprises the preliminary steps of: and generating a three-dimensional inspection model.
7. The inspection method for realizing the MBD-based aviation complex structural component according to claim 6, wherein the generating of the three-dimensional inspection model specifically comprises: and marking MBD inspection specifications and specific inspection requirements on the step information of the three-dimensional process model to form a three-dimensional inspection model.
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| CN111678477A (en) * | 2020-06-20 | 2020-09-18 | 贵阳航发精密铸造有限公司 | Automatic detection and measurement method for final inspection of turbine working blade |
| CN111861147A (en) * | 2020-06-29 | 2020-10-30 | 北京航空航天大学 | Digital detection method and system for whole process of manufacturing complex parts |
| CN111859629A (en) * | 2020-06-29 | 2020-10-30 | 昌河飞机工业（集团）有限责任公司 | Detection planning method and system for helicopter movable component |
| CN111861149A (en) * | 2020-06-29 | 2020-10-30 | 北京航空航天大学 | Detection process driving method and system based on three-dimensional model |
| CN111859026A (en) * | 2020-06-29 | 2020-10-30 | 北京航空航天大学 | XML-based three-coordinate measurement and evaluation information transfer method and system |
| CN112506474A (en) * | 2020-08-28 | 2021-03-16 | 武汉征原电气有限公司 | MBD model-based automatic programming method for on-machine measurement of 3D measuring head |
| CN112906082A (en) * | 2021-02-07 | 2021-06-04 | 南京航空航天大学 | MBD model of cable assembly and automatic generation method thereof |
| 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 |
| CN113094774A (en) * | 2021-03-30 | 2021-07-09 | 沈阳富创精密设备股份有限公司 | Dimension inspection method for automatically matching target value |
| WO2022029787A1 (en) * | 2020-08-05 | 2022-02-10 | Kitov Systems Ltd | Design encoding of intercomponent inspection requirements |
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Cited By (14)
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| CN111678477A (en) * | 2020-06-20 | 2020-09-18 | 贵阳航发精密铸造有限公司 | Automatic detection and measurement method for final inspection of turbine working blade |
| CN111861147A (en) * | 2020-06-29 | 2020-10-30 | 北京航空航天大学 | Digital detection method and system for whole process of manufacturing complex parts |
| CN111859629A (en) * | 2020-06-29 | 2020-10-30 | 昌河飞机工业（集团）有限责任公司 | Detection planning method and system for helicopter movable component |
| CN111861149A (en) * | 2020-06-29 | 2020-10-30 | 北京航空航天大学 | Detection process driving method and system based on three-dimensional model |
| CN111859026A (en) * | 2020-06-29 | 2020-10-30 | 北京航空航天大学 | XML-based three-coordinate measurement and evaluation information transfer method and system |
| CN111859629B (en) * | 2020-06-29 | 2024-01-30 | 昌河飞机工业（集团）有限责任公司 | Method and system for detecting and planning moving parts of helicopter |
| CN111861149B (en) * | 2020-06-29 | 2023-04-07 | 北京航空航天大学 | Detection process driving method and system based on three-dimensional model |
| CN111859026B (en) * | 2020-06-29 | 2022-08-09 | 北京航空航天大学 | XML-based three-coordinate measurement and evaluation information transfer method and system |
| WO2022029787A1 (en) * | 2020-08-05 | 2022-02-10 | Kitov Systems Ltd | Design encoding of intercomponent inspection requirements |
| CN112506474A (en) * | 2020-08-28 | 2021-03-16 | 武汉征原电气有限公司 | MBD model-based automatic programming method for on-machine measurement of 3D measuring head |
| CN112906082A (en) * | 2021-02-07 | 2021-06-04 | 南京航空航天大学 | MBD model of cable assembly and automatic generation method thereof |
| CN112906082B (en) * | 2021-02-07 | 2024-02-27 | 南京航空航天大学 | Automatic generation method of MBD model of cable assembly |
| CN113094774A (en) * | 2021-03-30 | 2021-07-09 | 沈阳富创精密设备股份有限公司 | Dimension inspection method for automatically matching target value |
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