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CLC number: TP391
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Received: 2006-03-20
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Parametric design of a part with free-form surfaces
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KIM Yeoung-il, KIM Li-ra, JUN Cha-soo. Parametric design of a part with free-form surfaces[J]. Journal of Zhejiang University Science A, 2006, 7(9): 1530-1534.
@article{title="Parametric design of a part with free-form surfaces",
author="KIM Yeoung-il, KIM Li-ra, JUN Cha-soo",
journal="Journal of Zhejiang University Science A",
volume="7",
number="9",
pages="1530-1534",
year="2006",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.A1530"
}
%0 Journal Article
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%A KIM Yeoung-il
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%A JUN Cha-soo
%J Journal of Zhejiang University SCIENCE A
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.A1530
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T1 - Parametric design of a part with free-form surfaces
A1 - KIM Yeoung-il
A1 - KIM Li-ra
A1 - JUN Cha-soo
J0 - Journal of Zhejiang University Science A
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IS - 9
SP - 1530
EP - 1534
%@ 1673-565X
Y1 - 2006
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2006.A1530
Abstract: 3D solid models for parts with regular-form surfaces (PRFSs) are effectively generated using traditional parametric design techniques. A new model is obtained by changing some parameters defining the model. The parts with free-form surfaces (PFFSs), however, cannot be defined by several parameters. Usually they are defined by some geometric elements like profile curves. The traditional parametric design approaches have not easily dealt with the PFFSs. A method for generating a solid model and an engineering drawing for PFFSs is proposed in this paper: First, the new profiles are generated from input point data. Second, the profile information is extracted from the existing model. Last, the old profiles are replaced with the new profiles. This method can preserve the associative information of the existing model and automatically generate the drawing including views, dimensions, and annotations. The proposed method has been implemented using a commercial CAD/CAM system, Unigraphics, and API functions written in C-language, and were applied to the blades of a turbine generator. Some illustrative examples are provided in order to show the effectiveness of the proposed method.
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