| 基于STL模型的抽壳方法研究 |
| |
| 引用本文： | 张征宇,洪军,丁玉成,许瑞杰,张敏华. 基于STL模型的抽壳方法研究[J]. 西安交通大学学报, 2004, 38(1): 35-38 |
| |
| 作者姓名： | 张征宇 洪军 丁玉成 许瑞杰 张敏华 |
| |
| 作者单位： | 西安交通大学机械工程学院,710049,西安 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划)，上海市科技攻关项目 |
| |
| 摘 要： | 针对快速原型制造(RPM)和熔模铸造中对壳体原型的需求,提出了一种对零件的STL(STereoLithography)模型进行抽壳的新方法,将零件的STL模型的抽壳过程分解为沿Z坐标轴的偏置和切层轮廓区域偏置,并通过对偏置后的切层轮廓所围成的多边形进行布尔运算,得到了切层后零件的壳体STL模型.由于克服了STL模型三维偏置所面临的困难,因此特别适合对具有复杂曲面零件的STL模型进行抽壳.工程实例表明,该方法缩短了原型制作时间,降低了制作成本,具有实用价值和良好的市场前景.
|
| 关 键 词： | 快速成型 STL模型 抽壳 |
| 文章编号： | 0253-987X(2004)01-0035-04 |
| 修稿时间： | 2003-04-28 |
Hollowing Process for StereoLithography Model |
| |
| Zhang Zhengyu,Hong Jun,Ding Yucheng,Xu Ruijie,Zhang Minghua. Hollowing Process for StereoLithography Model[J]. Journal of Xi'an Jiaotong University, 2004, 38(1): 35-38 |
| |
| Authors: | Zhang Zhengyu Hong Jun Ding Yucheng Xu Ruijie Zhang Minghua |
| |
| Abstract: | A new hollowing process of a STL model was presented to meet the demands for hollowed prototypes in casting and rapid prototype manufacturing. To eliminate the difficulty in directly three-dimensional (3D) offsetting of a STL model, the hollowing operation is divided into the offsetting along the Z-axis and cross-sectional contour offsetting, and it implements the Boolean operations on the polygons made by the offset contours of cross-sectional contours to produce a thin-shell sliced STL model. This hollowing operation is especially suitable to hollow the STL models generated from the parts with free-form surfaces. This method has been verified by practical cases, which have showed that it can obviously reduce prototype's building time and cost, and therefore could be useful in practice. |
| |
| Keywords: | rapid prototyping STL model hollowing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
