Computer-Aided Design in Subtractive and Additive Prototyping
This paper concerns the use of a commercially available computer-aided design software in designing and manipulating the complex-shaped models for subtractive and additive prototyping processes. In the subtractive prototyping approach, the computer-aided design software was used to create surface...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Universiti Putra Malaysia Press
2004
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3631/ http://psasir.upm.edu.my/id/eprint/3631/1/Computer-Aided_Design_in_Subtractive.pdf |
| Summary: | This paper concerns the use of a commercially available computer-aided design software
in designing and manipulating the complex-shaped models for subtractive and additive
prototyping processes. In the subtractive prototyping approach, the computer-aided
design software was used to create surface models. The models were section-cut into
multiple cross sectional layers. Then, the section-cut models were converted from graphic
files into non-graphic files (neutral format files). In the additive prototyping approach,
the computer-aided design software was used to create solid models with internal cavities
(parent model). Multiple smaller diameter solid models were then derived from the
parent mode!. The various diameter solid models were converted into surface models.
The surface models were then section-cut and later changed into neutral format files.
The computer-aided design software used in the project was AutoSurf, a commercially
available product of Autodesk, Inc. The hardware which was used ;n the above processes
were a four degrees of freedom precision robotic manipulator (for manipulating raw
material), a ball-nosed end milling device (in subtractive prototyping) and a semi-liquid
deposition tool (for additive prototyping). This study revealed the possibility of using
cheap and general computer-aided design software to accomplish the complex-shaped
model design and manipulation work in the prototyping processes instead of using
expensive rapid prototyping software. |
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