Study on Applying Orthographic Projection Learning Module to Computer-Aided Drafting

• Main Authors: Ting-yu Tseng, 曾婷瑜
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/37913095146252547982

碩士 === 國立臺灣科技大學 === 機械工程系 === 101 === Traditional drafting has gradually been replaced by computer-aided drafting due to its convenience. Many drafts can even be obtained from 3D CAD models directly. Students tend to focus on using the computer software for design and drafting, resulting in lacks of training on the draft reading. Therefore, in this study, an orthographic projection learning module was developed to help students to rapidly improve their capability on draft reading and Computer-aided drafting. The orthographic projection learning module was developed in AutoCAD 2012. A plug-in pull-down menu of Orthographic Projection was added with twelve exercises for selection. The exercises contain three projected views and a perspective view of the model. Different colors are used to distinguish the different surfaces. The training process is suggested to be four stages, starting with reading views only to gradually adding views for drafting. Tests were conducted on students without drafting experiences. After preliminary teaching about the basic graphic theory and software tools, the students used the learning module to learn Computer-aided drafting. After the four-stage training, a new problem was tested to evaluate the improvement, together with a questionnaire survey. The results showed that the accuracy and efficiency of drafting can be improved effectively after using this orthographic projection learning module.