NC程序检验仿真系统中虚形体的几何建模  

Geometric Modelling for Swept Volume in NC and Simulation Systems

作　　者：胡宾[1] 李鹤九[1] 段正澄[1] 李培根[1] 

机构地区：[1]华中理工大学机械科学与工程学院

出　　处：《华中理工大学学报》1995年第2期91-95,共5页Journal of Huazhong University of Science and Technology

摘　　要：利用参数化模型的方法，对虚形体的参数化模型进行了研究和探讨，并介绍了在三轴数控加工中几种常见刀具在运动过程中形成虚形体的参数方程表达式，为解决ＮＣ检验中碰撞干涉的算法开辟了一条思路。Geometric modelling ofr the swept volume is important to simulating theinterferencebetween a moving solid and its environment.This paper presents a parametrized modelmethod for modelling the swept volume by computing a family of critical curves from a mov-ing solid.With this method, precise parametric representation for the surface generated bytypical NC milling tools during three-axis motion is presented in terms of the envelope theo-ry.The swept volume for each cutter motion is determined.Based on this approach,the in-tersection calculation can be carried out and NC programmed checking as well as collisionalinterference check and a toolpath simulating system can be developed.

关 键 词：参数化模型 虚形体 数控加工 检验 刀具 

分 类 号：TG659.01[金属学及工艺—金属切削加工及机床]