三角网格模型等高线刀具轨迹生成研究  

Research on the Generation of Contour Tool Path from the Triangular Mesh Model

作　　者：黄常标[1] 江开勇[1] 

机构地区：[1]华侨大学模具技术研究中心,福建泉州362021

出　　处：《机床与液压》2009年第12期1-4,111,共5页Machine Tool & Hydraulics

基　　金：国家科技支撑计划项目(2006BAF01A23);教育部科学技术研究重点项目(208170);福建省青年人才项目(2008F3069);华侨大学科研启动费项目(08BS203)

摘　　要：提出了一种采用通用环形刀具对离散三角网格模型进行三坐标加工的等高线轨迹生成算法,算法包括三角网格模型的等距离偏置和水平面内的二维轨迹等距偏置。设计了基于面片的模型等距偏置方法,分析了凸边和凸点的特点并提出了保护轨迹的直线拟合生成算法。实例程序的运行证明,该算法稳定可靠、能快速有效地生成环形刀具的等高线轨迹。An algorithm on the generation of contour tool path was presented for the manufacturing of the triangular mesh model by means of triple coordination machining with bull tool. It includes the equidistant offsets of the triangular mesh model and of the temporary 2D contour. The subalgorithm on the equidistant offsets of the model was designed based on the facet. The subalgorithm on the generation of the transitional contour was presented for protecting the convex edges and vertices based on the analysis of characteristics of them. The running of the program indicates that the algorithm can generate contour tool path of bull tool for the mesh model in a stable and reliable, efficient and effective way.

关 键 词：三角网格模型 环形刀具 等高线轨迹 两次偏置法 

分 类 号：TG659[金属学及工艺—金属切削加工及机床] TP391[自动化与计算机技术—计算机应用技术]