腰轮转子建模与高速高精度加工研究与分析  

Roots Rotor Modeling and High-speed High-precision Machining Research and Analysis

作　　者：余道洋[1] 韩江[1] 赵韩[1] 

机构地区：[1]合肥工业大学,合肥230009

出　　处：《中国机械工程》2013年第8期1062-1065,1096,共5页China Mechanical Engineering

基　　金：国家科技重大专项(2009ZX04004-021);合肥工业大学校基金资助项目(2010HGXJ0139)

摘　　要：建立了腰轮转子数字化实体模型;提出了在腰轮转子加工制造过程中,采用三次NURBS样条曲线插补替代通常的微直线拟合插补;研究了腰轮转子摆线段三次NURBS曲线插补算法;为了解决NURBS曲线自适应速度控制存在的速度冲击问题,采用S曲线加减速控制策略重新规划进给速度;应用MATLAB软件模拟摆线段三次NURBS样条曲线插补算法并与微直线拟合插补算法进行了比较;最后在数控机床上对三次NURBS样条曲线插补算法进行了数控加工验证并与微直线拟合插补算法进行了比较,结果证明NURBS样条曲线插补算法具有更快的速度和更高的精度。The paper established roots rotor digital model. In the roots rotor manufacturing process,cubic NURBS spline interpolation was used instead of the usual micro--straight line fitting interpolation,and roots rotor cycloidal cubic NURBS curve interpolation algorithm was studied. For solving NURBS adaptive speed control＇s speed fluctuation, S--curve acceleration and deceleration con- trol was used for the feed rate re--planning. By MATLAB software cycloidal segment cubic NURBS interpolation algorithm was simulated and compared with micro--straight line fitting interpolation al- gorithm. Finally CNC machining tests verified cubic NURBS interpolation algorithm and compared with micro--straight line fitting interpolation algorithm hy CNC machine tools. The results prove that cubic NURBS interpolation algorithm has faster speed and higher accuracy.

关 键 词：腰轮转子 三次NURBS样条曲线 微直线段 S曲线加减速 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]