复杂曲面高效加工的环切刀具路径生成方法  

A Method of Contour-Parallel Tool Path Planning for Cutting Sculptured Surface Efficiently

作　　者：孟书云[1] 刘兰英[1] 华茂发[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》2009年第11期26-29,共4页Machine Tool & Hydraulics

基　　金：江苏省2008年省属高校自然科学基础研究项目资助(08KJD460010);江苏省南京工程学院引进人才科研启动基金项目资助(KXJ08025)

摘　　要：提出一种适用于复杂曲面高效加工的环切刀具路径生成方法,该方法以平面封闭三次B样条曲线族作为导引线,运用复杂曲面笔式加工插补算法实现曲面局部区域的加工。导引曲线由封闭控制多边形顶点,通过逐层内等距,得到内偏置控制多边形的顶点,进而生成B样条导引曲线环。该方法提高了复杂曲面局部加工的效率,而且用B样条曲线描述刀具路径,为实现复杂曲面高效、高精度加工奠定了理论基础,并通过实例验证了算法的有效性。A new method for generating contour-parallel tool path was proposed for cutting sculptured surface efficiently. Cubic planar B spline curves as driving curves were projected on the boundary and interior of local area of sculptured surface. All the driving curves were generated by offsetting the control polygon of these B-spline curves layer by layer. The method can improve the efficiency for local machining of sculptured surface. Tool path format expressed by B spline curves establishes the bases of high speed and high precision machining. An example demonstrates that the algorithm is feasible and effective.

关 键 词：复杂曲面 笔式加工 刀具路径 环切 

分 类 号：N391.7[自然科学总论]