• Title/Summary/Keyword: Rapid Prototyping

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Research of Application of Rapid Prototyping in Architectural Industry and Its Educational Status - With Focus on the Mid-size Firm and Graduate CAAD Education in U.S- (건축 산업에서의 신속조형기술 응용과 교육 연구 -미국의 중소규모 사무소와 대학원 CAAD 교육을 중심으로-)

  • Jung, C. H.
    • Korean Journal of Computational Design and Engineering
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    • v.9 no.1
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    • pp.77-91
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    • 2004
  • Integrating computer-aided design with computer-aided fabrication and construction will fundamentally redefine the relationship between design and construction. Rapid prototyping(RP) is evaluated as one of the integration method available but it has been regarded as very expensive and complex design evaluation tool and is only suitable for large mechanical design shops in automobile and aerospace industry. However current status of rapid prototyping is changing since the new generation of RP equipment, less expensive and more user-friendlier, now can be installed and use in design firms. Simultaneously increasing use of 3D CAAD software is also helping to use rapid prototyping widely. It is crucial to acknowledge rapid prototyping technologies are not only for avant-garde architect such as Frank O. Gehry but ordinary 90% architects, who can have benefit from fast and cost-effective technology. With its fast development and adaptation in architectural industry, it is quite necessary to include rapid prototyping education in regular CAAD courses either undergraduate or graduate level.

Concurrent Engineering Approach to the Die Design of Metal Forming Process using Rapid Prototyping and Finite Element Analysis (쾌속 3차원 조형법과 유한요소해석을 연계한 소성가공 금형설계의 동시공학적 접근방법)

  • Part, K.;Yoon, J.W.;Cho, J.R.
    • Journal of the Korean Society for Precision Engineering
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    • v.13 no.8
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    • pp.146-154
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    • 1996
  • In this work, rapid prototyping and three-dimensional finite element analysis are simultaneously applied to the die design of metal forming processes. Rapid prototyping is a new prototyping technology which produces three-dimensional part models directly from CAD data and has been extensively applied to various manufacturing processes. There are many types of rapid prototyping systems due to their building principles and materials. In this work, Stereolithography Apparatus(SLA), which is the most widely used rapidprototyping system, is introduced to manufacture the die set. For general preparation of STL file, which is the standard input file of rapid prototyping system, mesh data which are used in describing the die surface in finite element analysis are translated so that rapid prototyping and finite element analysis are dffectively connected. A die set for spider forging and a clover punch for deep drawing section are manufactured effciently using SLA prototypes, and metal forming experiments are carried out using them. Comparing the result of experiments with that of analyses, the processes can be predicted and designed successfully.

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Imfluence of Surface roughness on Rapid prototyping by FDM (FDM 장치에서 쾌속조형물의 형상이 표면 거칠기에 미치는 영향)

  • 전재억;정진서;하만경
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.1037-1041
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    • 2001
  • Competitive power is rapidly manufacture product required consumers. Therefore, modern industry have changed from small item many production to many item small production, rapid production is necessary thing at the product development. Thus, rapid prototyping is appeared. If the graphic model was made by CAD, the production can be made in short term. That provide what the part was directly tested by the worker. It provide believable data. This study is Imfluence of Surface roughness on Rapid prototyping by FDM(Fused deposition modeling).

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A study on the development of rapid prototyping system using 5 axis machining (5축 가공을 이용한 쾌속조형 시스템의 개발)

  • 정태성;양민양
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.1011-1014
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    • 2002
  • In order to reduce the lead-time and cost, many useful methods have been applied to Rapid Prototyping (RP) in recent years. But cutting process is still considered as one of the effective RP methods that have been developed and currently available in the industry. It also owen practical advantages such as precision and versatility. However, traditional 3 axis NC machining has some inherent limitations such as the restriction of tool accessibility and the complex setup. In this work, a new rapid prototyping system with high speed 5 axis machining has been developed to overcome those limitations. The architecture of developed system is described in detail and the successful application examples are presented.

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Development of Rapid Prototyping Technique using Projection Welding (Projection Welding을 이용한 쾌속 3차원 조형법의 개발)

  • 강상무;이상찬;양동렬
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.101-104
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    • 1997
  • The purpose of this study is the development of the extensive Rapid Prototyping Technique, which can resolve the long-term manufacturing process, shrinkage and deformation occurring rapid prototyping technique. To begin with, the various specimens for tensile and bending test were manufactured on the basis of this modeling technology. Then, many kinds of the laminate pieces for the test were made by using the sheet steels 1 mm and 2 mm thickness which is composed of the same ingredient. Not only the mechanical strength of the both of the laminate specimens by the developed Rapid Prototyping using projection welding and non-laminate specimens of 5 mm thickness were evaluated, but the mechanical strength of the specimens of the tensile and bending test composed of heterogeneous components were also estimated.

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Automatic Generation of the Input Data for Rapid Prototyping from Unorganized Point Cloud Data (임의의 점 군 데이터로부터 쾌속조형을 위한 입력데이터의 자동생성)

  • Yoo, Dong-Jin
    • Journal of the Korean Society for Precision Engineering
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    • v.24 no.11
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    • pp.144-153
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    • 2007
  • In order to generate the input data for rapid prototyping, a new approach which is based on the implicit surface interpolation method is presented. In the method a surface is reconstructed by creating smooth implicit surface from unorganized cloud of points through which the surface should pass. In the method an implicit surface is defined by the adaptive local shape functions including quadratic polynomial function, cubic polynomial function and RBF(Radial Basis Function). By the reconstruction of a surface, various types of error in raw STL file including degenerated triangles, undesirable holes with complex shapes and overlaps between triangles can be eliminated automatically. In order to get the slicing data for rapid prototyping an efficient intersection algorithm between implicit surface and plane is developed. For the direct usage for rapid prototyping, a robust transformation algorithm for the generation of complete STL data of solid type is also suggested.

Development of Sheet Deposition Type Rapid Prototyping System Minimizing Post Processing (후처리를 최소화하는 판재적층방식 쾌속조형기의 개발)

  • Cho, In-Haeng;Lee, Kun-Woo;Song, Yong-Ak
    • Journal of the Korean Society for Precision Engineering
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    • v.16 no.7
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    • pp.210-218
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    • 1999
  • Sheet deposition type rapid prototyping system have many advantages : high build speed, low operating cost, large part size, no phase change, no need for support generation, and forth. However, those sheet deposition type rapid prototyping system require an additional post processing to remove excessive material attached to the part. This post processing is time consuming and labor intensive. Moreover, it is difficult for those system to fabricate parts with hollow cores and internal cavities. A new sheet deposition type rapid prototyping system that minimizes the post processing is proposed. The proposed system automatically removes excessive material in a peeling-off process between two cutting processes. In this way, the proposed system can reduce the post-processing time and cost as well as the limitation of the feasible geometric shapes in the conventional sheet deposition system.

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쾌속 3차원 조형법과 유한요수해석을 연계한 소성가공 금형설계의 동시공학적 접근방법

  • Park, Geun;Yoon, Jung-Hwan;Yang, Dong-Ryul;Cho, Jong-Rae
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.884-889
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    • 1994
  • In this work, rapid prototyping and three dimensional finite element analysis are simltaneously applied to design metal forming processes. Rapid prototyping is a new prototyping technology which producess three dimensional part models directly from CAD data and has been extensively applied to various manufacturing processes. There are many types of rapid prototyping systems due to their building principles and materials. In this work, Stereolithography Apparatus (SLA) which is the most widely-used rapid prototyping system is introduced to manufacture the die set. To prepare STL file generally, mesh data which are in describing the die surface in finite element analysis are translated so that rapid prototyping and finite element analysis are effectively connected. The die sets are manufactured using SLA prototypes, and matal forming experiments are carried out using them. Comparing experiments results with analyses, the processes can be predicted and designed successfully.

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