摘要
汽轮机叶片是高精度的复杂零件,其大多数插补采用线性和圆弧插补,但许多成熟的非均匀有理B样条插补算法仍未应用于汽轮机叶片。针对汽轮机叶片高速精密加工的要求,探讨了恒进给速度插补、限定弓高误差的自动调节进给速度插补、等弓高误差插补和基于冗余误差控制插补4种非均匀有理B样条插补算法,从加工精度、进给速度以及加工效率3个方面对上述4种算法进行比较。仿真结果表明,基于冗余误差控制插补算法是最适合汽轮机叶片加工的插补算法。
Stream turbine blade is a high-precision and complex parts, but most are still using linear and circular interpolation, and many mature non-uniform rational B-spline interpolation algorithms have not been used in stream turbine blade yet. For the requirements of high-speed and high accuracy machining, four kinds of non-uniform rational B-spline interpolation algorithms, the constant feedrate interpolation algorithm, the adaptive feedrate interpolation algorithm with confined chord-error, the equal chord-error interpelation algorithm and the interpolation algorithm based on redundancy error were studied, the four kinds of algorithms were compared from three aspects of machining accuracy, feed rate and processing efficiency. The optimal interpolation algorithm for the process of the stream turbine blade was got by simulation.
出处
《机床与液压》
北大核心
2010年第9期26-28,33,共4页
Machine Tool & Hydraulics
关键词
汽轮机叶片
插补算法
非均匀有理B样条
误差
Stream turbine blades
Interpolation algorithm
Non-uniform rational B-spline
Error
