Automated Tool Path Generation for End-Milling Operation Using CAD Model in STL Format

Isamu Nishida, K. Shirase
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引用次数: 0

Abstract

A method to extract the machining region from 3D CAD model in STL (Standard Triangulated Language) format and automatically generate tool path is proposed. At first, this study proposes a method to extract the machining region and obtain the geometrical feature such as convex shape or concave shape from only the 3D CAD model in STL format. The STL format has only triangular mesh data and drops all the information which is necessary to extract the removal volume for machining and the geometrical characteristics. Furthermore, the triangular mesh size is non-uniform. Then, the contour line model, in which the product model is minutely divided on the plane along any one axial direction and represented by points at intervals below the indicated resolution obtained from the contour line of the cross section of the product, is proposed. Subsequently, this study proposes a method to determine the machining conditions for each extracted machining region and automatically generate tool path according to the obtained geometrical feature of the machining region.
基于STL格式CAD模型的立铣刀路自动生成
提出了一种从标准三角语言(STL)格式的三维CAD模型中提取加工区域并自动生成刀具轨迹的方法。本研究首先提出了一种仅从STL格式的三维CAD模型中提取加工区域并获得凸形或凹形等几何特征的方法。STL格式只有三角形网格数据,而忽略了提取加工去除量和几何特征所需的所有信息。此外,三角网格尺寸不均匀。然后,提出了等高线模型,在平面上沿任意一个轴向对产品模型进行细划分,并用低于产品截面等高线所指示分辨率的间隔点表示。随后,本研究提出了一种方法来确定每个提取的加工区域的加工条件,并根据得到的加工区域的几何特征自动生成刀具轨迹。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
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