CN103150447B - A kind of engineering goods Fast design method based on virtual instrument and reverse-engineering - Google Patents
A kind of engineering goods Fast design method based on virtual instrument and reverse-engineering Download PDFInfo
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- CN103150447B CN103150447B CN201310095069.2A CN201310095069A CN103150447B CN 103150447 B CN103150447 B CN 103150447B CN 201310095069 A CN201310095069 A CN 201310095069A CN 103150447 B CN103150447 B CN 103150447B
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Abstract
The present invention relates to a kind of engineering goods Fast design method based on virtual instrument and reverse-engineering.The present invention first obtains cloud data by the model of raw product, imageware software is utilized to make the cloud data of acquisition obtain the surface model of raw product, recycling CATIA software makes surface model form the solid model of raw product and utilize Parametric designing to obtain the solid model of new product, ANSYS software is utilized to carry out analytical calculation to new model, obtain the model of satisfactory new product, finally model is utilized rapidform machine rapid shaping stored in database.The collecting part of the present invention by raw product model data, the Data Management Analysis with calculating analysis software and management and rapid shaping dept. are grouped into.Part of data acquisition of the present invention is optical gauge, can be realized measurement and the acquisition of data, can obtain the cloud data of model by scanning.
Description
Technical field
The present invention relates to a kind of engineering goods Fast design method.Specifically based on an engineering goods Fast design method for virtual instrument and reverse-engineering.
Background technology
The innovative design of engineering goods is forever motive forces of development of machinery industry.But for traditional machinery industry, especially some medium and small sized enterprises are but faced with new-product development cycle length, investment cost is large, are difficult to the very fast development need adapting to model change, have impact on the lifting of enterprise independent innovation ability.Though there is many Machinery Products Development software in the market, but function dispersion, be not easy to developer and operate use.And for the new product data developed, lack very perfect management system, be unfavorable for the exploitation of new product, again innovative design and data base administration.
Although inverse planning techniques instead of artificial mapping and drawing course, three-dimensional measurement can be realized fast, form point cloud data and three-dimensional picture, but with regard to reversal technique itself, its function is mainly the three-dimensional measurement to existing procucts, and the not responsible Transform Type design to raw product.
So, be necessary to research and develop a set of engineering goods Fast design method, the reverse measuring of engineering goods, the innovative design on prototype foundation, multi-functional computational analysis, rapid shaping and multi-functional data library management can be integrated.The R&D cycle of new product can be shortened, improve dirigibility and the convenience of product design, Improving Independent.
Summary of the invention
The object of the present invention is to provide a kind of Fast design method of product, virtual instrument technique and reverse Engineering Technology have been done good combination, improve dirigibility and the convenience of product design.The present invention mainly for engineering goods and parts product, have developed a set of integrate engineering goods reverse measuring, the innovative design on prototype foundation, multi-functional computational analysis, rapid shaping and multi-functional data library management quick development system.A kind of engineering goods Fast design method based on virtual instrument and reverse-engineering, basis based on reverse-engineering (Inverse seeking design) is done the research work of a large amount of subsequent development, analytical calculation Integrated Simulation is operated in a virtual instrument, by opening required software to the operation of Interface of Virtual Instruments, the quick development method integrating the functions such as reverse measuring, three-dimensional modeling, Transform Type design, finite element analysis, optimal design, fatigue life prediction and rapid shaping finally can be realized.
The present invention has three typical functions:
(1) three-coordinates measuring machine can be directly utilized to realize measuring the Rapid Reverse Engineering of product in the present invention, then the correlation function of imageware, CATIA software is called, adopt parameterization design method, realize three-dimensional modeling and the innovative design on prototype foundation;
(2) in Interface of Virtual Instruments, can carry out FEM (finite element) calculation, intensive analysis, Rigidity Calculation, model analysis, optimal design and estimation of fatigue life to new deisgn product, the result of gained can categorizedly stored in database;
(3) rapid shaping can be realized by Direct driver forming machine by the present invention, the rapid shaping after similarity transformation can be realized for large product.
For realizing above-mentioned functions, the invention provides a kind of engineering goods Fast design method based on reverse-engineering.
Technical scheme of the present invention: a kind of engineering goods Fast design method based on virtual instrument and reverse-engineering, in Process of New Product Design, basic thinking first obtains cloud data by the model of raw product, imageware software is utilized to make the cloud data of acquisition obtain the surface model of raw product, recycling CATIA software makes surface model form the solid model of raw product and utilize Parametric designing to obtain the solid model of new product, ANSYS software is utilized to carry out analytical calculation to new model, obtain the model of satisfactory new product, finally model is utilized rapidform machine rapid shaping stored in database.The collecting part of the present invention by raw product model data, the Data Management Analysis with calculating analysis software and management and rapid shaping dept. are grouped into.Part of data acquisition of the present invention is optical gauge, can be realized measurement and the acquisition of data, can obtain the cloud data of model by scanning.
Above-mentioned Data Management Analysis and administrative section are made up of imageware software, CATIA software, ANSYS software and database, and different software energy logarithms is existing different function factually, its objective is product model is modified, analytical calculation and contrast.The menu of respective function is had in virtual instrument, call respective menu can realize modifying to gathered data and calculating, show in Interface of Virtual Instruments and compare with the data of raw product, being finally met the result that user requires, data are delivered in database.
Above-mentioned rapid shaping is, by rapidform machine, the model forming met the demands is become mould.
Based on an engineering goods Fast design method for virtual instrument and reverse-engineering, it is characterized in that, its concrete implementation step is:
(1) collection of data: utilize reverse equipment optical measuring instrument to carry out optical three-dimensional scanning and measurement to raw product material object, obtains cloud data;
(2) Data Management Analysis and management: utilize Interface of Virtual Instruments can form the solid model of the surface model of original product, solid model, new product, then to solid model analytical calculation, the contrast of new product, obtain the model that user needs, the model met the demands is stored in database.
(3) machine-shaping.Click " product rapid shaping " menu in Interface of Virtual Instruments, the new product of rapidform machine to complete design can be driven to carry out rapid processing shaping.
Treatment Analysis and the management of the data in above-mentioned said step (2) have four steps, are specially:
A, obtain the surface model of raw product.Call " reverse-engineering " function in Interface of Virtual Instruments, call software imageware reverse engineer, the cloud data obtained is input in software processes in step (1), obtain raw product surface model in kind;
B, generation prototype solid model also amendment obtain the solid model of new product.Call " new product designs " function in Interface of Virtual Instruments, call CATIA software carries out prototype solid model reconstruct to raw product surface model in kind, size is modified and obtains new product entity model;
C, mechanical analysis, model analysis, analysis of fatigue, fail-safe analysis and optimal design etc. are carried out to new product.Call " finite element analysis " function in Interface of Virtual Instruments, utilize ANSYS software to new product mechanical analysis, model analysis, analysis of fatigue, fail-safe analysis and optimal design etc.;
D, new product model are put in storage.By new product solid model stored in knowledge base, knowledge base to classify store various types typical products element by tree structure, contrast can be inquired about for user, select or quick Transform Type design, user in use can inquire about the various information of storehouse inner model as required, and shows in man-machine friendly interface.
Principle of work of the present invention is: the cloud data being obtained raw product by optical measuring instrument, by computer programming, reverse software imageware software, three-dimensional software CATIA software, computational analysis ANSYS software, NASTRAN software etc. are integrated in Interface of Virtual Instruments, call corresponding function and can realize foundation to model and calculating, and by obtained model stored in database, result can be shown on computers by man-machine friendly interface, is convenient to contrast and the query selection of user.
The present invention can meet enterprise customer and realize reverse measuring, the innovative design on prototype foundation, multi-functional computational analysis and shaping to engineering goods in the short period of time, virtual instrument is applied in design process, simple to operation, improve dirigibility, the person skilled being applicable to very much medium-sized and small enterprises uses, and improves the capability of independent innovation of enterprise.
Accompanying drawing explanation
Fig. 1 achievement implementation process of the present invention;
Fig. 2 the inventive method process flow diagram;
Fig. 3 virtual instrument operation interface.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, the present invention to do the research work of a large amount of follow-up secondary development on the basis based on reverse-engineering (Inverse seeking design), virtual instrument is applied in design process, improve dirigibility, mainly for engineering goods and parts product, have developed the reverse measuring of a set of collection engineering goods, the innovative design on prototype foundation, multi-functional computational analysis and take shape in quick development system integrally.Virtual instrument can by all Integrated Simulation with computing function to together, calling of various software for calculation can be realized by the programming of computing machine, and the result calculated can be shown, finally can realize the rapid development system integrating the functions such as reverse measuring, three-dimensional modeling, Transform Type design, FEM (finite element) calculation, optimal design, fatigue life prediction and rapid shaping, by the display of data, storage, analysis and comparison, draw the product model of oneself, there is very strong dirigibility.Thus improve especially medium and small sized enterprises' capability of independent innovation.It is characterized in that by 3 D measuring instrument and rapidform machine and imageware, CATIA, the calculating analysis softwares such as ANSYS, Nastran, achieve the reconstruct of three-dimensional model and the innovative design of product customization type or the Transform Type design in raw product.On this basis, have employed object-oriented programming, use VB programming software designed system friendly interface, simple to operation, the person skilled being applicable to very much medium-sized and small enterprises uses; Solve the shortcoming of Machinery Products Development function dispersion on Vehicles Collected from Market, by calling relevant business software with Interface of Virtual Instruments, achieve the functions such as the reverse engineer to engineering goods, three-dimensional modeling, finite element analysis, analysis of fatigue, model analysis, optimal design and rapid shaping processing, this platform software can isolated operation a certain function wherein, also can realize processing from reverse to final rapid shaping engineering goods or the whole process of 3D printer shaped article.Therefore the present invention can solve complete engineering goods in the short period of time reverse measuring, the innovative design on prototype foundation, multi-functional computational analysis and shaping problem, enhance the capacity for independent innovation.Also can be used for the training that enterprise technology personnel carry out rapid Design.
A kind of engineering goods Fast design method based on virtual instrument and reverse-engineering, in Process of New Product Design, first obtain cloud data by utilizing optical scanner to scan raw product, imageware software is utilized to make the cloud data of acquisition obtain the surface model of raw product, recycling CATIA software makes surface model form the solid model of raw product and utilize Parametric designing to obtain the solid model of new product, ANSYS software is utilized to carry out analytical calculation optimization to new model, obtain the model of satisfactory new product, finally model is utilized rapidform machine Dimension rapid shaping stored in database.
Virtual instrument in the present invention is integrated with imageware, the softwares such as CATIA, ANSYS, the shell function in being programmed by VB realizes calling each software, the process of cloud data can be realized, the acquisition of surface model, the presenting and retrofit, the computational analysis of new product of solid model, can by the picture of result and detailed data stored in access database, can realize storing and inquiry with DAO operating database, be presented on interface and be convenient to observe, Fig. 3 is seen at concrete interface.
The collecting part of the present invention by raw product model data, the Data Management Analysis with calculating analysis software and management and rapid shaping dept. are grouped into.The present invention is developed as example with drive axle, and embodiment is as follows, but the invention is not restricted to following embodiment.
(1) collection of raw product data: utilize reverse device A TOS three-dimensional optical measuring instrument to carry out 3-D scanning and measurement to raw product material object, obtains cloud data.In DATA REASONING process, refinement measurement and data acquisition are carried out to some key positions, achieve efficient data prediction.This invention takes following technology:
A. cloud noise-removed technology is put
B. data point reduction techniques
C. point cloud data Hole filling algorithms and technology
E. curve and surface reconfiguration technique
By above five kinds of technology, realize the identification of global feature during multiple subsurface split and the fairing processing of curved surface entirety, ensure the precision of curve reestablishing.Effectively solve for complex-curved, in mesh generation non-convex border leak and disappearance compensation problem.The cloud data model of the drive axle obtained.
For the interface problem of negative test the data obtained and other analysis software, the file layout of the model scanning data exported due to optical camera reverse equipment can not identify by CAD system, adopt IGES initial graphics exchange standard in the present invention, the point cloud data that reverse equipment exports is fitted to line, then line is formed face, again face is formed entity, thus complete to the reconstruct of 3D solid and and other analysis software carry out the object of exchanges data;
(2) surface model of raw product is generated.Click " reverse-engineering " menu in Interface of Virtual Instruments, call imageware reverse engineer, data IGES file is input in module.First simplify process to cloud data, reduce the pressure brought subsequent treatment, for a lot of product, a lot of minutias there is no need, such as, so do compression process to minutia, fillet, nut, circular hole etc.Roughly step is as follows: first determine that some Curvature varying are comparatively large or have the some cloud of obvious characteristic, construct some section lines, for reducing error as much as possible, the entirety trend of the cross section that we construct as far as possible with some cloud is vertical; Then extract characteristic curve and boundary line by Section Point Cloud fitting a straight line and circular arc algorithm, generally the mode based on tolerance is all taked in the matching of these curves, and we determine public extent according to the accuracy requirement of part and the requirement of processing.Finally can determine the surface model of prototype drive axle;
(3) above-mentioned formed just surface model, and the shape of raw product will be shown really, drive axle solid model must be set up.Click " new product designs " menu in Interface of Virtual Instruments, call CATIA software carries out prototype solid model reconstruct to raw product surface model in kind, user can modify to the parameter of model as required, form the new product solid model of oneself, realize the parametrization new design to existing product, reach new designing requirement;
(4) for the product newly designed, owing to being the improvement in raw product, so for whether meeting request for utilization or unknown number, we will do necessary computation and analysis to new product, will use the analytical approach of finite element, these can operate in Interface of Virtual Instruments.Click " finite element analysis " menu in Interface of Virtual Instruments, the new drive axle solid model designed is imported in software ANSYS, carries out stress and strain model, the loading of boundary condition and load, carry out finite element analysis, draw the cloud atlas of stress and strain;
(5) we also can analyze the Rigidity and strength of new product.Click " model analysis " menu in Interface of Virtual Instruments, ANSYS software can be called model analysis is carried out to the new product designed;
(6) for the life-span of product, can according to the stress and strain size in scheme (4), according to the Theories and methods of fatigue, the tired module in application ANSYS software is analyzed.Click " analysis of fatigue " menu in Interface of Virtual Instruments, call ANSYS software, import the result of analysis of model and stress, strain, as required analysis of fatigue is carried out to new product;
(7) analysis of reliability also can be carried out to new product.Click " fail-safe analysis " menu in Interface of Virtual Instruments, ANSYS software can be called fail-safe analysis is carried out to the new product designed;
(8) for the analysis result of our new product, under the prerequisite not affecting use, structural improvement, optimization can be done, reach the object of saving material.Click " optimal design " menu in Interface of Virtual Instruments, ANSYS software can be called Optimal Structure Designing is carried out to the new product designed.For the result optimized, according to the situation of reality, see whether he meets design requirement, if meet design requirement, step (9) rapid shaping can be continued and by model stored in database; For meet design, can perform step (4) redesign;
(9) by new product solid model stored in knowledge base, knowledge base to classify store various types typical products element by tree structure, can select for user or quick Transform Type design, user in use can the various information of interrogation model, and show in man-machine friendly interface;
(10) for the model of the new product of satisfied design, will import in product rapid shaping module and utilize rapidform machine Dimension rapid shaping.Click " product rapid shaping " menu in Interface of Virtual Instruments, the new product of rapidform machine to complete design can be driven to carry out rapid processing shaping.
The concrete implementation step that the present invention is based on the engineering goods Fast design method of reverse-engineering can with reference to as mentioned above.
Above-described embodiment is only for technological thought of the present invention and feature are described, its object understands content of the present invention implementing according to this enabling person skilled in the art, when can not with restriction the scope of the claims of the present invention, namely the equalization generally done according to disclosed spirit changes or modifies, and must be encompassed within the scope of the claims of the present invention.
Claims (1)
1., based on an engineering goods Fast design method for virtual instrument and reverse-engineering, it is characterized in that the method comprises the following steps:
(1) collection of data: utilize reverse equipment optical measuring instrument to carry out optical three-dimensional scanning and measurement to raw product material object, obtains cloud data; In DATA REASONING process, some cloud noise-removed technology, data point reduction techniques, point cloud data holes filling technology and curve and surface reconfiguration technique is adopted to carry out refinement measurement and data acquisition to product key position;
(2) Data Management Analysis and management: the solid model utilizing the surface model of Interface of Virtual Instruments formation raw product, solid model, new product, then to the solid model analysis of new product, calculating, contrast, obtain the model that user needs, and stored in database;
(3) machine-shaping: click " product rapid shaping " menu in Interface of Virtual Instruments, can drive the new product of rapidform machine to complete design to carry out rapid processing shaping;
The Treatment Analysis of the data in above-mentioned steps (2) and management have four steps, are specially:
A, obtain the surface model of raw product: call " reverse-engineering " function in Interface of Virtual Instruments, call software imageware and carry out reverse engineer, the cloud data obtained in step (1) is input in software and processes, adopt IGES initial graphics exchange standard, Points cloud Fitting is become line, then line is formed face, then face is formed entity, thus the reconstruct completed 3D solid, obtain raw product surface model in kind;
B, generation raw product solid model also amendment obtain the solid model of new product: call " new product designs " function in Interface of Virtual Instruments, call CATIA software carries out raw product solid model reconstruct to raw product surface model in kind, size is modified and obtains new product entity model;
C, mechanical analysis, model analysis, analysis of fatigue, fail-safe analysis and optimal design are carried out to new product solid model: call " finite element analysis " function in Interface of Virtual Instruments, utilize ANSYS software to carry out mechanical analysis, model analysis, analysis of fatigue, fail-safe analysis and optimal design to new product solid model;
D, new product model are put in storage: by new product solid model stored in knowledge base, knowledge base to classify store various types typical products element by tree structure, can for user's inquiry, contrast, selection or quick Transform Type design, user in use inquires about the various information of storehouse inner model as required, and shows in man-machine friendly interface.
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| FR3043226A1 (en) * | 2015-10-28 | 2017-05-05 | Airbus Operations Sas | CONTROLLING AN EQUIPMENT IN RELATION TO ITS DIGITAL MODEL |
| CN105599307A (en) * | 2016-03-16 | 2016-05-25 | 谭圆圆 | 3D printing method and device |
| CN105861762A (en) * | 2016-04-16 | 2016-08-17 | 嘉兴市雅士迪真皮座套有限公司 | Machining method for sample piece for production of leather cover of automobile seat |
| CN105751517B (en) * | 2016-05-05 | 2018-09-25 | 广东三维精准科技股份有限公司 | Clothes three-dimensional cutting model's manufacturing method |
| CN106408657A (en) * | 2016-09-29 | 2017-02-15 | 广西大学 | Reverse design analyzing for industrial products and the method for doing so |
| CN107273639A (en) * | 2017-07-10 | 2017-10-20 | 海南中新塑料有限公司 | A kind of method for the air inlet pipe that utilization reverse-engineering is built |
| CN109940342A (en) * | 2017-12-20 | 2019-06-28 | 天津三星通信技术研究有限公司 | A kind of forming method of equipment metal shell |
| CN110101488B (en) * | 2019-06-13 | 2021-11-09 | 山东大学 | Macro-micro integrated incremental forming preparation method for implant and implant obtained by macro-micro integrated incremental forming preparation method |
| CN112347590B (en) * | 2020-11-30 | 2023-06-02 | 北海职业学院 | Failure part optimization design method based on reverse technology |
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