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Research on Curved Surface Fashioning Error and RP Technology Based on ATOS-FDM

Author: YangTianBo
Tutor: GongYaDong
School: Northeastern University
Course: Mechanical Manufacturing and Automation
Keywords: surface prototyping reverse engineering cloud points Imageware Geomagic
CLC: TH16
Type: Master's thesis
Year: 2006
Downloads: 155
Quote: 3
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Abstract


Reverse engineering is a new subject and technology that coming up with the development of computer science and data digitization. It helps to change the design mode from draft to models in conventional CAD systems. It’s a new approach for rapid prototype manufacture.In many cases, designers and manufacturers only can obtained an original or physical model, and it is needed to change physical models into CAD models. So the product information model is a key to complete the integration of design and manufacturing. In industrial application, the basic concept of producing a part based on an original or physical model without the use of engineering drawing is called "Reverse Engineering". Reverse engineering typically starts with measuring an existing object so that a surface or solid model can be deduced in order to exploit the advantages of CAD/CAM technologies. It is often necessary to produce a copy of a part, when no original drawings or documentation are available. In other cases we may want to re-engineer an existing part, when analysis and modifications are required to construct a new improved product. Especially in the aeronautical, automotive, shipbuilding, die and mould, and aerospace manufacturing industries that frequently encounter complex surfaces, since shorter lead time has become a competitive advantage. To satisfy the tremendous need for product shape design and functional modification, reverse engineering has played an important role in recent years.Reverse Engineering is a complicated processing procedure, the entirety flow includes the three-dimensional scanning of master piece, points cloud files’s curved surface fitting in software and rapid prototyping course of processing. In every part of rapid prototyping, from products’ prototype manufacturing, datas measuring, treatment to model reconstruction, because of facilities’ precision, different treatments and other factors, errors are made in hardwares and softwares, so there are many error influence

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CLC: > Industrial Technology > Machinery and Instrument Industry > Machinery Manufacturing Technology
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