A simple method for invalid loops removal of planar offset curves

被引：3

作者：

Yuan-Lung Lai

James Shih-Shyn Wu

Jui-Pin Hung

Jian-Horng Chen

机构：

[1] National Chung-Hsing University,Institute of Mechanical Engineering

[2] Nanya Institute of Technology,Department of Mechanical Engineering

[3] Chung Shan Medical University,Department of Physical Therapy

来源：

The International Journal of Advanced Manufacturing Technology | 2006年 / 27卷

关键词：

Forward locus tracing method (FLTM) ; Invalid loops removal; Offset curves; Self-intersection ;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The function of curve offset is of importance in the process of generating a machining tool-path. The robustness of curve offset is compact with reliable invalid loops removal algorithms. The traditional method based on interference detections in searching for all contact positions is a time consuming process and prone to misunderstanding. In order to improve such removal function, a new algorithm called the forward locus tracing method (FLTM) was introduced here. The FLTM searches for all intervals split by intersections of complicated planar curves directly and transforms 2D transversal intersection problems into 1D interval identifications. This proposed mapping process in FLTM may simplify the structure of tasks and be implemented by a computer program easily for CAD systems. Some examples with multiple loops were demonstrated and the results present considerable efficiency and reliability in the offset operation.

引用

页码：1153 / 1162

页数：9