CN114781054B - Door-closing-based quality control method for digital twin geometric model of aviation product - Google Patents
Door-closing-based quality control method for digital twin geometric model of aviation product Download PDFInfo
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
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Abstract
The application discloses a quality control method of an aviation product digital twin geometric model based on door closure, which comprises the steps of presetting one or more of a standard door closure, a grid door closure, an input door closure, an output door closure, a processing door closure and a characteristic door closure into a product life cycle management system, inputting part attribute parameters of an established aviation product digital twin geometric model into the product life cycle management system, and calling evaluation service of one or more door closures; and calling a door-to-door compliance computing service, and issuing a frozen technical state after the technical state audit is completed. According to the application, the model quality inspection item is parameterized, the model quality inspection item is pre-arranged in a quality gate rule through a threshold parameter range, and the development problem caused by model quality is assisted or automatically judged through the quality gate in the design process of the digital twin geometric model of the aviation product, so that the design iteration time of the aviation product is greatly reduced, and the development efficiency is improved.
Description
Technical Field
The application relates to the field of digital twin design of aviation products, in particular to a quality control method of digital twin geometric models of aviation products based on door closure.
Background
The digital design is expressed from 2D to full 3D, the aviation product development comprehensively adopts a digital twin technology, a three-dimensional digital geometric model is used as a common language which runs through the whole product development, the current international general method is to adopt a full three-dimensional modeling technology, the problems of multi-section/sheet discontinuity, multi-section/sheet superposition, garbage line/surface, line selfing, surface normal jump and the like of the model can occur in the development process, and billions of dollars are directly or indirectly lost each year.
The automatic inspection and optimization of digital model quality is highly required by the conversion of CAD data format versions, the migration of historical model data and the like, but is greatly discounted in actual operation.
Up to 2 ten thousand large aeronautical product configuration units, each minimum configuration unit comprises about 200 models on average, and one model comprises about 1000 elements or features on average. The digital twin geometric model of the aviation product comprises a large number of elements and features, wherein the elements and the elements, the features and the link relation items between the elements and the features are counted in tens of millions. Due to the huge amount of data, models with quality defects cannot be found accurately and efficiently using the most advanced service calculations, even if a large number of engineers spend a large amount of time.
Geometric twin models have become the sole source of data for aerospace product design, simulation, and manufacture. The forward section fuselage element in B787 is docked by 0.762 millimeters, resulting in rework. The creep aging forming of the A380 wing wallboard requires that the hyperbolic aerodynamic shape tolerance is within 1 millimeter, and the model precision requirement is extremely high. The power assembly of a certain speed changer cannot generate engineering drawings by using a digital model, so that the defects of the model are extremely hidden, and the manual searching is difficult. The modeling process generates a large number of fine process elements and overlapped garbage elements, has extremely high professional requirements on personnel, and needs to take time to check and repair one by one, and complex piece reconstruction of the die is frequent. To realize the application of the digital twin technology in engineering, the quality assessment and control of the digital twin model are required to be realized.
In the actual production process, errors are found in simulation, test and even production due to insufficient methods and lack of means. Accumulated errors due to model quality problems have not been identified and repaired. Resulting in overweight parts, damaged machining tools and damaged materials.
In the actual model development process, the time for repairing the digital prototype model occupies a considerable proportion, and the model reconstruction caused by the failure of repairing prolongs the design time, so that the cost is increased.
Disclosure of Invention
The application aims to provide an aviation product digital twin geometric model quality control method which does not need extremely strong professional model defect discrimination, does not need a large amount of manual processing and places important quality defects in front of gate check.
In order to achieve the above purpose, the application adopts the following technical scheme:
one or more of a standard door, a grid door, an input door, an output door, a processing door and a characteristic door are set into a product life cycle management system in advance, wherein the standard door is configured to define modeling general attribute requirements of units, sizes, tolerances, constraints, states, solutions and combinations;
the grid gateway is configured to define the general requirements of analysis simulation oriented to intensity calculation on network division quality and efficiency;
the input gateway is configured to define requirements for an aerospace product-original equipment manufacturer to receive a vendor digital twin geometric model;
the output gateway is configured to define model quality requirements output by an aerospace product-original equipment manufacturer to a vendor;
the processing door is configured to define the quality requirements of the model on numerical control processing, automatic pipe bending, sheet metal forming and composite materials;
the feature gate is configured to define model requirements in terms of digital twin lightweight features, aviation product maintainability, and safety;
inputting the part attribute parameters of the established digital twin geometric model of the aviation product into the product life cycle management system, and calling one or more gate evaluation services.
Further, the door-based quality control method for the digital twin geometric model of the aviation product comprises the following steps of executing one or more of the following steps S101 to S106, and executing the step S2:
s101, establishing a model, and setting basic attribute parameters of parts; invoking an evaluation service of the standard door lock, marking a door stamp of the standard door lock if the standard door lock passes, otherwise, feeding an error report back to a model designer;
s102, importing a provider model through a provider model input system, calling an evaluation service of the input door, marking a door stamp of the input door if the input door passes, otherwise, feeding an error report back to a provider;
s103, loading a unit model to be configured through a provider data manager, calling an output gate evaluation service, marking a gate stamp of the output gate if the output gate passes, otherwise, feeding an error report back to a model output party of an original equipment manufacturer;
s104, loading a configuration unit model, calling a grid door lock assessment service, generating grids after passing, auditing the grid model, marking a door stamp of the grid door lock if the grid door lock passes, and otherwise, feeding back an error report to a model designer;
s105, loading a unit processing model, calling a processing door stop evaluation service, checking processing quality of the model to be processed, generating a processing path and a report if the processing door stop passes, enabling a manufacturer to conduct path checking, and feeding back an error report to a model designer if the checking is problematic, otherwise, marking a door stamp of the processing door stop;
s106, loading a model of the unchanged unit, calling a characteristic gate evaluation service, notifying a digital twin manager or a regional manager to audit digital twin if the characteristic gate passes, and marking a characteristic gate on a variable configuration unit contained in the unchanged configuration unit if the digital twin passes; if the characteristic gate does not pass, feeding back an error report to a model designer corresponding to the related problem in the invariable configuration unit;
s2, a technical state manager opens the configuration unit, calls the door-to-door compliance computing service, and issues frozen technical states after the technical state audit is completed.
Further, if the basic attribute parameters of the parts meet one of the conditions of non-compliance with engineering meaning, non-standard similar combination, non-compliance with geometric dimension or tolerance requirement of digital-analog, incapacity of solving constraint in sketch or assembly, overconstrained, undercuppercriting, undercompartment connection, false dimension and the like, the standard door lock does not pass.
Further, in step S102, if the digital twin geometric model meets one of the conditions of surface clipping or entity stitching failure, conversion materialization failure, topology information loss, materialization failure-caused fine sides, converted untrimmed surface, etc., the input gateway does not pass.
Further, in step S103, if the model output to the supplier does not meet the protection or encapsulation requirements of the design process, the output gate does not pass.
Further, in step S104, if the mesh model has one of a micro-selfing surface, a small curve, and a line segment, which cause failure of automatic meshing, or has a repeated surface that generates gaps, or has one of a twisted surface and a fine side, which easily generates a large number of small meshes or failure of meshes, the mesh door is not passed.
Further, in step S105, if burrs, over-cut selfing curved surfaces, and fine edges of tool path calculation failure occur in the machining quality; or a repeated curved surface which leads to the processing not in place or a distorted curved surface which leads to the processing scratching of a workpiece appear, and the processing door is not passed.
Further, in step S106, if the digital twin model is oversized or does not meet the quality requirements of the lightweight, safe area, motion envelope, maintainability and assurance models on the configuration unit structure tree, the characteristic gate is not passed.
Further, the rule set of aerospace product digital twin geometry model qualities is defined based on defect rules that check parameter thresholds of the items.
Further, if the error report is fed back to the provider or the model designer, the provider or the model designer modifies the model, and for the model created by the enterprise itself, one or more of the steps S104 to S106 are executed again, and step S2 is executed again; for the vendor designed model, executing again the step S102, and one or more of S104 to S106, executing again the step S2;
and if the door closure conformity calculation result is qualified, issuing a freezing technical state, wherein the frozen model parameters cannot be changed and are sent to the downstream for processing.
The technical scheme provided by the application has the following beneficial effects: according to the application, model quality inspection items are classified and combined, the item classification combination parameter threshold value is preset in the quality gate rule, and the development problem caused by model defects is assisted or automatically judged through gate calculation corresponding to the gate rule set in the design process of the digital twin geometric model of the aviation product, so that the design iteration time of the aviation product is greatly reduced, and the development efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
Fig. 1 is a schematic flow chart of a quality control method of a digital twin geometric model of an aviation product based on a door lock according to an exemplary embodiment of the application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or device.
Currently, quality inspection technology of the aviation product manufacturing industry has certain application, and a conventional model quality inspection method comprises the following steps:
1) In the CAD modeling process, fine defects in elements are identified through functions carried by a tool, and the quality problem of a model is avoided as far as possible by means of design knowledge of experienced specifications;
2) Invoking quality inspection tools in CAD (computer aided design), such as Q-tracker, CAD (computer aided design) document and the like, performing piece-by-piece inspection and analysis, and singly adjusting different model quality thresholds;
3) Integrated with the PDM is a quality check monitor, such as: Q-Monitor, background looks over quality report and judges model problem.
The disadvantage of this method is evident: 1) The manual participation is more, the efficiency is low, the error rate is high, the model quality is easy to ignore for the degree of speedup and the cost reduction, 2) the quality inspection report of a complex model (such as a speed reducer) has more than one thousand items, and the processing time reaches about 10% of the total design time; 3) Background identification, while efficient, makes it difficult to quickly find problems from a large number of reports to forego repairs.
Existing quality check products, such as Q-checker, only support the itemization check, and lack the componentization check of quality check items.
The application aims to provide a quality control method of a digital twin geometric model of an aviation product configuration unit based on a door closure, which is widely applicable to the field of digital twin design of aircrafts, helicopters, engines and airborne systems, and the corresponding defects are automatically checked through the door closure, so that the processing time of engineers is greatly reduced.
In one embodiment of the application, the digital twin geometric model quality entries are divided into five groups: a specification group, a grid group, an input group, an output group, a processing group and a characteristic group, and correspondingly sets a Quality Gate (QG) of the digital twin geometric model: standard gate QG1, grid gate QG2, input gate QG3a, output gate QG3b, process gate QG4, and characteristic gate QG5.
The following describes each door in detail:
canonical gate off QG1: modeling, drawing specification and standard oriented gate, and defining the modeling general attribute requirements of units, sizes, tolerances, constraints, states, solutions and combinations; the quality problem of the controlled model mainly comprises data organization and non-standard similar combination which are not consistent with engineering significance; digital-to-analog geometry and tolerance requirements; the constraints in sketch and assembly cannot be resolved, overconstrained, underconstrained, underconsite, false-sized, etc.
Grid gate QG2: the gate for calculating the quality of the grid model is defined by the general requirements of analysis simulation for strength calculation on the quality and efficiency of network division; the quality problem of the controlled model mainly comprises a micro-selfing curved surface, a small curve and a line segment which cause automatic meshing failure; repeated curved surfaces which are easy to generate gaps; a large number of small grids or twisted curved surfaces and fine edges which fail the grids are easy to generate;
input gate QG3a: quality gating of vendor model inputs, defined as the requirement that an aerospace product OEM (original equipment manufacturer) receive a vendor digital twin geometry model; the quality problems of the controlled model mainly comprise: vendor model input requirements (with features, parameters, links, and release references, etc.); curved surface cutting or solid stitching fails; conversion materialization fails; leading to topology information loss, materializing the failed fine edges; the converted untrimmed curved surface;
output gate QG3b: model quality gate output to the supplier, defined as model quality requirement and intellectual property protection requirement output to the supplier by the aeronautical product OEM; the quality problem of the controlled model mainly comprises the output model requirement: protection and encapsulation of related design process;
processing door closure QG4: quality gate facing numerical control, pipe bending, mold processing and the like, and defining the quality requirements of model numerical control processing, automatic pipe bending, sheet metal forming, composite materials and the like; the quality problems of the controlled model mainly comprise burrs, over-cut selfing curved surfaces and fine edges with failure in calculation of the cutter path; a repeating curved surface that results in a lack of machining in place; the processing of a distorted curved surface which scratches a workpiece;
characteristic gate QG5: the quality gate oriented to the twin collaborative audit is defined as the related model requirements of digital twin lightweight characteristics, aviation product maintainability and safety; the quality problems of the controlled model mainly comprise oversized digital twin models, light weight on configuration unit structure trees, safe areas, motion envelope, and quality requirements of maintainability and guaranteeing models.
The embodiment of the application provides a door-based quality control method for an aviation product digital twin geometric model, which comprises the steps of presetting one or more of a standard door, a grid door, an input door, an output door, a processing door and a characteristic door into a product life cycle management (PLM) system, inputting part attribute parameters of the established aviation product digital twin geometric model into the product life cycle management system, and calling an evaluation service of one or more doors, wherein the door-based quality control method for the aviation product digital twin geometric model comprises the following steps S101 to S106, and executing the following step S2:
s101, establishing a model, and setting basic attribute parameters of parts; invoking the evaluation service of the standard door lock, marking a door stamp of the standard door lock if the standard door lock passes, otherwise, feeding back an error report to a model designer, modifying a model by the model designer, and executing one or more of the steps S101 to S106; in step S101, if the basic attribute parameter of the part meets one of the conditions of "inconsistent with engineering meaning, similar combination of non-standard, inconsistent geometric dimension of digital and analog or tolerance requirement, unable to solve constraint in sketch or assembly, over constraint, under motion connection, false dimension, etc., the standard door is not passed.
S102, importing a provider model through a provider model input system, calling an evaluation service of the input door, marking a door stamp of the input door if the input door passes, otherwise, feeding an error report back to a provider; in step S102, if the digital twin geometric model satisfies one of the conditions of "cut with curved surface or stitch failure, convert materialization failure, result in topology information loss, fine edge of materialization failure, converted untrimmed curved surface, etc.", the input gate does not pass.
S103, loading a unit model to be configured through a provider data manager, calling an output gate evaluation service, marking a gate stamp of the output gate if the output gate passes, and otherwise, feeding back an error report to a model output party of an original equipment manufacturer; in step S103, if the model output to the vendor does not meet the protection or encapsulation requirements of the design process, the output gate does not pass.
S104, loading a configuration unit model, calling a grid door-closure assessment service, generating a grid after passing the grid door-closure assessment service, auditing the grid model, marking a door stamp of the grid door-closure if the grid door-closure passes the grid door-closure, otherwise, feeding back an error report to a model designer, modifying the model by the model designer, and executing one or more of the steps S101 to S106; in step S104, if the mesh model has one of a micro-selfing surface, a small curve, and a line segment, which cause failure of automatic meshing, or has a repeated surface that generates gaps, or has one of a twisted surface and a fine side, which easily generates a large number of small meshes or fails to mesh, the mesh gate does not pass.
S105, loading a unit processing model, calling a processing door check evaluation service, performing processing quality inspection on the processing model, if the processing door check passes, generating a processing path and a report, enabling a manufacturer to conduct path checking, if the checking is problematic, feeding back an error report to a model designer or a provider (the provider or the model designer modifies the model, and then one or more of the steps S101 to S106) and otherwise marking a door stamp of the processing door check; in step S105, if the processing quality has burrs, over-cut selfing curved surfaces, and fine edges of failure in tool path calculation; or a repeated curved surface which leads to the processing not in place or a distorted curved surface which leads to the processing scratching of a workpiece appear, and the processing door is not passed.
S106, loading a constant unit model, calling a characteristic gate evaluation service, informing a digital twin manager or a regional manager to audit digital twin if the characteristic gate passes, and marking a gate stamp of the characteristic gate if the digital twin passes; if the characteristic gate does not pass, an error report is fed back to a model designer, the model designer modifies a model, and one or more of the steps S101 to S106 are executed; in step S106, if the digital twin model is oversized, or the quality requirements of the lightweight, safe area, motion envelope, maintainability and assurance model on the configuration unit structure tree are not satisfied, the characteristic gate is not passed.
Based on the steps, the rule set of the quality of the digital twin geometric model of the aviation product is defined based on defect rules of parameter thresholds of inspection items, and the size of the parameter thresholds can be defined and set according to different model types and core degrees of components.
S2, a technical state manager opens a configuration unit, invokes a door-closure compliance calculation service, completes technical state auditing if a door-closure compliance calculation result is qualified, and sends a frozen technical state, and the frozen model parameters cannot be changed and are sent to a downstream for processing.
For different product models, the execution degrees of the steps S101 to S106 are different, for example, if the model is created autonomously, the step S101 is executed but the step S102 is not executed, and if the model is developed outside the commission, the step S102 is executed but the step S101 is not executed; the step S104 is executed for the core component model, and the parameter threshold is set more strictly (i.e., the set threshold range is narrower) as the core component model, the step S104 is not executed for the auxiliary component model, and the step S105 is not executed for the commissioned processing.
According to the application, model quality inspection items are classified and combined, the item classification combination parameter threshold value is preset in the quality gate rule, and the development problem caused by model defects is assisted or automatically judged through gate calculation corresponding to the gate rule set in the design process of the digital twin geometric model of the aviation product, so that the design iteration time of the aviation product is greatly reduced, and the development efficiency is improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely illustrative of the embodiments of this application and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the application, and it is intended to cover all modifications and variations as fall within the scope of the application.
Claims (9)
1. A door-based quality control method for an aviation product digital twin geometric model, which is characterized in that one or more of a standard door, a grid door, an input door, an output door, a processing door and a characteristic door are set into a product life cycle management system in advance, wherein the standard door is configured to define modeling general attribute requirements of units, sizes, tolerances, constraints, states, solutions and combinations;
the grid gateway is configured to define the general requirements of analysis simulation oriented to intensity calculation on network division quality and efficiency; the input gateway is configured to define requirements for an aerospace product-original equipment manufacturer to receive a vendor digital twin geometric model; the output gateway is configured to define model quality requirements output by an aerospace product-original equipment manufacturer to a vendor; the processing door is configured to define the quality requirements of the model on numerical control processing, automatic pipe bending, sheet metal forming and composite materials; the feature gate is configured to define model requirements in terms of digital twin lightweight features, aviation product maintainability, and safety; inputting the part attribute parameters of the established digital twin geometric model of the aviation product into the product life cycle management system, and calling one or more evaluation services of the door closure;
the quality control method includes performing one or more of the following steps S101 to S106, and then performing step S2:
s101, establishing a model, and setting basic attribute parameters of parts; invoking an evaluation service of the standard door lock, marking a door stamp of the standard door lock if the standard door lock passes, otherwise, feeding an error report back to a model designer;
s102, importing a provider model through a provider model input system, calling an evaluation service of the input door, marking a door stamp of the input door if the input door passes, otherwise, feeding an error report back to a provider;
s103, loading a unit model to be configured through a provider data manager, calling an output gate evaluation service, marking a gate stamp of the output gate if the output gate passes, and otherwise, feeding back an error report to a model output party of an original equipment manufacturer;
s104, loading a configuration unit model, calling a grid door lock assessment service, generating grids after passing, auditing the grid model, marking a door stamp of the grid door lock if the grid door lock passes, and otherwise, feeding back an error report to a model designer;
s105, loading a unit processing model, calling a processing door stop evaluation service, checking processing quality of the model to be processed, generating a processing path and a report if the processing door stop passes, enabling a manufacturer to conduct path checking, and feeding back an error report to a model designer if the checking is problematic, otherwise, marking a door stamp of the processing door stop;
s106, loading a model of the unchanged unit, calling a characteristic gate evaluation service, notifying a digital twin manager or a regional manager to audit digital twin if the characteristic gate passes, and marking a characteristic gate on a variable configuration unit contained in the unchanged configuration unit if the digital twin passes; if the characteristic gate does not pass, feeding back an error report to a model designer corresponding to the related problem in the invariable configuration unit;
s2, a technical state manager opens the configuration unit, calls the door-to-door compliance computing service, and issues frozen technical states after the technical state audit is completed.
2. The quality control method of a door-based digital twin geometric model of an aerospace product according to claim 1, wherein in step S101, if the basic attribute parameters of the part meet one of conditions of inconsistent engineering meaning, non-canonical class combination, inconsistent digital-to-analog geometric size or tolerance requirement, constraint incapacity of solving in sketch or assembly, overconstrained, underconstrained, underconshed, and pseudo-size, the canonical door is not passed.
3. The quality control method of a gate-based aerospace product digital twin geometric model according to claim 1, wherein in step S102, if the digital twin geometric model meets one of the conditions of clipping with a curved surface or physical stitching failure, conversion materialization failure, leading to loss of topology information, fine edges of materialization failure, converted untrimmed curved surface, the input gate does not pass.
4. The method according to claim 1, wherein in step S103, if the model output to the supplier does not meet the protection or packaging requirements of the design process, the output gate does not pass.
5. The quality control method of a gate-based digital twin geometric model of an aerospace product according to claim 1, wherein in step S104, if the grid model has one of a micro-selfing surface, a small curve, and a line segment, which cause automatic grid failure, or has a repeating surface that generates gaps, or has one of a twisting surface and a fine side, which easily generates a large number of small grids or grid failure, the grid gate does not pass.
6. The door-based quality control method of digital twin geometric model of aviation product according to claim 1, wherein in step S105, if burrs, over-cut selfing surfaces and fine edges of tool path calculation failure occur in the processing quality; or a repeated curved surface which leads to the processing not in place or a distorted curved surface which leads to the processing scratching of a workpiece appear, and the processing door is not passed.
7. The method according to claim 1, wherein in step S106, if the digital twin model is oversized or the quality requirements of the lightweight, safe area, motion envelope, maintainability and guaranteed model on the configuration unit structure tree are not satisfied, the characteristic door is not passed.
8. The gate-based aerospace product digital twin geometric model quality control method of claim 1, wherein the rule set of aerospace product digital twin geometric model quality is defined based on defect rules checking parameter thresholds of the entries.
9. The door-based quality control method of digital twin geometric models of aviation products according to claim 1, wherein if an error report is fed back to a provider or a model designer, one or more of steps S104 to S106 is/are performed again for the model created by the enterprise itself, and step S2 is performed again; for the vendor designed model, step S102 is performed again, and one or more of S104 to S106 is/are performed again, step S2 is performed again;
and if the door closure conformity calculation result is qualified, issuing a freezing technical state, wherein the frozen model parameters cannot be changed and are sent to the downstream for processing.
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