CN103440382A - Method for 3D printing plastic product based on reverse technology - Google Patents
Method for 3D printing plastic product based on reverse technology Download PDFInfo
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Abstract
The invention provides a method for a 3D printing plastic product based on a reverse technology. The method includes the following steps that three-dimensional data of an original model are obtained, reverse software in an industrial computer is utilized to preprocess point cloud data, curved surface reconstruction is carried out on transition curved surface data by means of the reverse software, entity three-dimensional reconstruction is conducted on NURBS curved surface model data through CAD / CAM software, hierarchical software is utilized to carry out hierarchical processing on entity three-dimensional model data, and 3D printing equipment carries out reverse manufacturing according to layer data. The method for the 3D printing plastic product based on the reverse technology is applied to the high-tech computer technology, guarantees high quality of manufactured products through an efficient, accurate and high-quality CAD modeling method, truly improves manufacturing efficiency, shortens development cycles and reduces production cost, and is a reverse manufacturing method which has high precision, intelligentizion, high integration density and systematization.
Description
Technical field
The present invention relates to reverse manufacturing technology field, relate in particular to a kind of method that 3D based on the reverse technology prints the plastic product.
Background technology
After the reverse technology is born in the eighties, be a kind of master pattern based on certain product, and assimilate advanced technology, the reconstruction technique of shortening design cycle in prototype.The today be growing more intense in market competition, time is exactly benefit, in order to improve product competitiveness in the market, whole process from product development to batch process all an urgent demand reduces costs and raising speed, the appearance of reverse technology, for the solution of this problem provides effective way, pay attention to extremely both at home and abroad.
Reverse manufacturing relates to a plurality of subjects, complete a reverse manufacturing engineering, and reach and expect complete, accurate, consistent effect, the technician need to have rich experiences and skilled technical ability on these subjects, but because for large-scale plastic parts, their structure and surface are all very complicated, cause the characteristic curve of 3 D measuring instrument measuring object and the experience that the undue gauger of dependence is divided in zone; During data acquisition, the measurement point dense distribution, be difficult to automatically differentiate the geometric properties of model, can't accurately, comprehensively obtain the geometric data of model; And data point is too much, data volume is excessive, existing commercial CAD/CAM software all is difficult to process, net result is computer-aided design (CAD) (CAD) modeling, the core technology of this reverse manufacture does not reach requirement, so it is lower that the reverse of present stage is manufactured efficiency, also always there is defect in product quality.
Summary of the invention
The technical problem to be solved in the present invention is: for the reverse that solves present stage, to manufacture efficiency lower, product quality is not good enough, the invention provides a kind of method that 3D based on the reverse technology prints the plastic product by accurately, CAD modeling efficiently solves the problems referred to above.
The technical solution adopted for the present invention to solve the technical problems is: a kind of 3D based on the reverse technology prints the method for plastic product, comprises the following steps:
1), obtain the three-dimensional data of master pattern: use three-dimensional measuring apparatus to be measured master pattern, obtain the cloud data of master pattern, and described cloud data is transferred in industrial computer;
2), use the reverse software in industrial computer to carry out pre-service to cloud data, comprise that removing the mass of redundancy data, data sorting, data splicing, data recombination, feature extraction and the zone that exist in noise spot, removal cloud data divides, then the discrete point in described cloud data is carried out to triangulation, form the fillet surface model data;
3), use described reverse software to carry out surface reconstruction to the fillet surface data, comprise curve, surface fitting, surface joining and feature modelling, and with IGES formatted output nurbs surface model data;
4), by CAD/CAM software, described nurbs surface model data is carried out to the entity three-dimensionalreconstruction, comprise curve reparation, curved surface reparation and three-dimensional solid modeling, with STL formatted output entity three-dimensional modeling data;
5), by CAE software, described entity three-dimensional modeling data is simulated to melt filling, pressurize, cooling number according to one's analysis, stress distribution, molecule and fiber orientation distribution, the contraction of goods and the analysis data of buckling deformation in the acquisition goods;
6), the analysis data that obtain in step 5) and the actual parameter of master pattern are contrasted;
If the error range that error surpass to allow, by described CAD/CAM software, the nurbs surface model data is adjusted and with the STL formatted output new entity three-dimensional modeling data, and then carry out successively step 5) and step 6);
If error, in the error range allowed, is used delamination software to carry out the layering processing to the entity three-dimensional modeling data, and the synusia data of acquisition is input in the 3D printing device;
7), the 3D printing device carries out the reverse manufacture according to the synusia data, comprises that synusia is printed and the synusia accumulation, finally obtains entity products.
Described three-dimensional measuring apparatus is the three-dimensional laser measuring instrument, the three-dimensional laser measuring instrument can carry out Measurement accuracy to complex profile, measuring speed is fast, efficiency is high, obtain the three-dimensional data of outside surface in kind and inner chamber, described reverse software is Surfacer software, and described CAD/CAM software is Unigraphics software, and described CAE software is Moldflow software.
For precision and the efficiency that improves the CAD modeling, step 2) also comprise double sampling is carried out in master pattern test leakage zone, described feature extraction comprises local detachment, approaches, fairing and amalgamation, described triangulation comprises described cloud data carried out to the continuous interpolation of triangular surface, and fairing, distortion triangular surface.
Concrete, described surface fitting comprises extraction separated secondary curved surface, described surface joining comprises the adjacent surface patch of smooth splicing, coordinates fairing overall situation surface patch.
The file layout of described synusia data is CLI, and the CLI file layout can adapt to the demand of most 3D printing device to the delamination software form.
The invention has the beneficial effects as follows, the method that this 3D based on the reverse technology prints the plastic product is applied high-new computer technology, by efficient, accurate and high-quality CAD modeling method, what guaranteed to manufacture a product is high-quality, conscientiously improved manufacture efficiency, having shortened the R&D cycle and reduced production cost, is a set of high precision, intellectuality, high integration and systematized reverse manufacture method.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the process flow diagram that the 3D that the present invention is based on the reverse technology prints the method for plastic product.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1, the invention provides a kind of method that 3D based on the reverse technology prints the plastic product, comprise the following steps:
1), obtain the three-dimensional data of master pattern: use the three-dimensional laser measuring instrument to be measured master pattern, obtain the cloud data of master pattern, and cloud data is transferred in industrial computer;
2), use the Surfacer software in industrial computer to carry out pre-service to cloud data, comprise double sampling is carried out in master pattern test leakage zone, remove noise spot, remove the mass of redundancy data existed in cloud data, data sorting, the data splicing, data recombination, feature extraction and zone are divided, then the discrete point in cloud data is carried out to triangulation, form the fillet surface model data, feature extraction comprises local detachment, approach, fairing and amalgamation, triangulation comprises cloud data is carried out to the continuous interpolation of triangular surface, and fairing, the distortion triangular surface,
3), use Surfacer software to carry out surface reconstruction to the fillet surface data, comprise curve, surface fitting, surface joining and feature modelling, and with IGES formatted output nurbs surface model data, surface fitting comprises extraction separated secondary curved surface, and surface joining comprises the adjacent surface patch of smooth splicing, coordinates fairing overall situation surface patch;
4), by Unigraphics software, the nurbs surface model data is carried out to the entity three-dimensionalreconstruction, comprise curve reparation, curved surface reparation and three-dimensional solid modeling, with STL formatted output entity three-dimensional modeling data;
5), by Moldflow software, the entity three-dimensional modeling data is simulated to melt filling, pressurize, cooling number according to one's analysis, stress distribution, molecule and fiber orientation distribution, the contraction of goods and the analysis data of buckling deformation in the acquisition goods;
6), the analysis data that obtain in step 5) and the actual parameter of master pattern are contrasted;
If the error range that error surpass to allow, by Unigraphics software, the nurbs surface model data is adjusted and with the STL formatted output new entity three-dimensional modeling data, and then carry out successively step 5) and step 6));
If error, in the error range allowed, is used delamination software to carry out the layering processing to the entity three-dimensional modeling data, and the synusia data of acquisition are input in the 3D printing device, the file layout of synusia data is CLI;
7), the 3D printing device carries out the reverse manufacture according to the synusia data, comprises that synusia is printed and the synusia accumulation, finally obtains entity products.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, the relevant staff can, in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to the claim scope.
Claims (5)
1. a 3D based on the reverse technology prints the method for plastic product, it is characterized in that: comprise the following steps:
1), obtain the three-dimensional data of master pattern: use three-dimensional measuring apparatus to be measured master pattern, obtain the cloud data of master pattern, and described cloud data is transferred in industrial computer;
2), use the reverse software in industrial computer to carry out pre-service to cloud data, comprise that removing the mass of redundancy data, data sorting, data splicing, data recombination, feature extraction and the zone that exist in noise spot, removal cloud data divides, then the discrete point in described cloud data is carried out to triangulation, form the fillet surface model data;
3), use described reverse software to carry out surface reconstruction to the fillet surface data, comprise curve, surface fitting, surface joining and feature modelling, and with IGES formatted output nurbs surface model data;
4), by CAD/CAM software, described nurbs surface model data is carried out to the entity three-dimensionalreconstruction, comprise curve reparation, curved surface reparation and three-dimensional solid modeling, with STL formatted output entity three-dimensional modeling data;
5), by CAE software, described entity three-dimensional modeling data is simulated to melt filling, pressurize, cooling number according to one's analysis, stress distribution, molecule and fiber orientation distribution, the contraction of goods and the analysis data of buckling deformation in the acquisition goods;
6), the analysis data that obtain in step 5) and the actual parameter of master pattern are contrasted;
If the error range that error surpass to allow, by described CAD/CAM software, the nurbs surface model data is adjusted and with the STL formatted output new entity three-dimensional modeling data, and then carry out successively step 5) and step 6);
If error, in the error range allowed, is used delamination software to carry out the layering processing to the entity three-dimensional modeling data, and the synusia data of acquisition is input in the 3D printing device;
7), the 3D printing device carries out the reverse manufacture according to the synusia data, comprises that synusia is printed and the synusia accumulation, finally obtains entity products.
2. a kind of 3D based on the reverse technology as claimed in claim 1 prints the method for plastic product, it is characterized in that: described three-dimensional measuring apparatus is the three-dimensional laser measuring instrument, described reverse software is Surfacer software, described CAD/CAM software is Unigraphics software, and described CAE software is Moldflow software.
3. a kind of 3D based on the reverse technology as claimed in claim 1 prints the method for plastic product, it is characterized in that: step 2) also comprise double sampling is carried out in master pattern test leakage zone, described feature extraction comprises local detachment, approaches, fairing and amalgamation, described triangulation comprises described cloud data carried out to the continuous interpolation of triangular surface, and fairing, distortion triangular surface.
4. a kind of 3D based on the reverse technology as claimed in claim 1 prints the method for plastic product, it is characterized in that: described surface fitting comprises extraction separated secondary curved surface, and described surface joining comprises the adjacent surface patch of smooth splicing, coordinates fairing overall situation surface patch.
5. a kind of 3D based on the reverse technology as claimed in claim 1 prints the method for plastic product, and it is characterized in that: the file layout of described synusia data is CLI.
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| CN104484139A (en) * | 2014-11-26 | 2015-04-01 | 江西洪都航空工业集团有限责任公司 | Manufacturing method for measurement clamp of steering column based on 3D printing technology |
| CN105225266A (en) * | 2014-06-06 | 2016-01-06 | 北京易景盈达科技有限公司 | A kind of method of carrying out reality and theoretical interactive modeling based on abnormal curved surface |
| CN105751517A (en) * | 2016-05-05 | 2016-07-13 | 广东三维精准科技股份有限公司 | Method for manufacturing three-dimensional garment cutting model |
| CN105944146A (en) * | 2016-04-25 | 2016-09-21 | 东莞理工学院 | Preparation method of biomedical porous magnesium bone tissue engineering scaffold |
| CN105975222A (en) * | 2016-07-18 | 2016-09-28 | 长沙理工大学 | Grouting lifting curve characteristic printing method and system |
| CN105965014A (en) * | 2015-02-25 | 2016-09-28 | 通用电器技术有限公司 | Method for manufacturing part by means of additive manufacturing technique |
| CN106409112A (en) * | 2016-10-11 | 2017-02-15 | 深圳信息职业技术学院 | 3D printing teaching system |
| CN107067472A (en) * | 2016-09-29 | 2017-08-18 | 北京理工大学 | A kind of geometric error characterizing method reconstructed based on nurbs surface |
| CN107564092A (en) * | 2017-07-26 | 2018-01-09 | 华南理工大学 | Method based on MATLAB according to picture quick Fabrication ceramic relief |
| CN107644121A (en) * | 2017-08-18 | 2018-01-30 | 昆明理工大学 | The reverse three-dimensionalreconstruction and body modeling method of a kind of ground surface material skeleton structure |
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| CN108037817A (en) * | 2018-01-04 | 2018-05-15 | 钦州学院 | Minitype radiator and its manufacture method based on grass carp scales microcosmic surface |
| CN108089681A (en) * | 2018-01-04 | 2018-05-29 | 钦州学院 | Cpu heat and its manufacturing method based on camphortree leaf microstructural surfaces |
| CN108214819A (en) * | 2018-01-12 | 2018-06-29 | 东华大学 | A kind of domestic ceramics Mould design and manufacturing method based on reverse-engineering |
| CN108437469A (en) * | 2018-03-12 | 2018-08-24 | 保定翰阳科技有限公司 | A kind of individual customized type method based on 3D technology |
| CN109156971A (en) * | 2018-09-19 | 2019-01-08 | 广州市三维空间电子商务有限公司 | A kind of three-dimensional bionic first manufacture craft |
| US10274934B2 (en) | 2014-02-25 | 2019-04-30 | Xyzprinting, Inc. | Data generating method for 3D printing, method for printing a 3D object, and system for processing 3D printing data |
| CN111084675A (en) * | 2019-10-12 | 2020-05-01 | 西安科智骨医疗器械有限公司 | Preparation method of personalized customized craniomaxillofacial bone surgical repair and reconstruction implant |
| CN111231055A (en) * | 2020-01-07 | 2020-06-05 | 国网四川省电力公司映秀湾水力发电总厂 | Reverse solving method for three-dimensional model of runner blade of mixed-flow water turbine |
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| CN114905732A (en) * | 2022-05-23 | 2022-08-16 | 胡新香 | 3D printing anti-grafting forming manufacturing method of injection mold |
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