自由曲面五坐标端铣加工干涉避免的研究  

Study on Interference Avoidance of Five-axis End Milling of Free-form Surfaces

作　　者：华茂发[1] 王建红[1] 

机构地区：[1]南京工程学院自动化学院,江苏南京211167

出　　处：《机床与液压》2010年第21期40-42,共3页Machine Tool & Hydraulics

基　　金：江苏省高校自然科学基金研究项目资助(08KJD460010);南京工程学院校级科研基金项目(KXJ08064)

摘　　要：基于平底端铣刀有效切削轮廓曲率与刀触点曲面法曲率匹配,初定刀具姿态,再通过刀具圆柱面与曲面求交,推导了交线上各点坐标的计算公式。利用交线上干涉点数据,计算并调整刀具姿态,避免切削刃后缘和侧缘过切被加工表面,消除瓶颈干涉。与用刀触点曲率半径计算并消除瓶颈干涉的方法相比,该方法更合理、更实用。The cutter orientation was determined based on the matching of the effective cutting-profile curvature of the flat-end cutter and the normal curvature of the curved surface of the cutter contact point, and the calculation formula of the coordinates of all the points on the intersection lines was deduced via the intersection of the cylindrical surface and curved surface of the cutter. The data of the interference points on the intersection lines were used to calculate and adjust the cutter orientation, avoid the trailing edge and the lateral edge of the cutting edge over cutting the machined surface and eliminate the bottle-neck interference. This method is more reasonable and practical than the method that uses the curvature radius of the cutter contact point to calculate and eliminate the bottle-neck interference.

关 键 词：自由曲面 端铣加工 干涉避免 

分 类 号：TP391.73[自动化与计算机技术—计算机应用技术]