基于NURBS插补的汽轮机叶片背弧面数控加工模拟与误差分析  

The NC Machining Simulation and Error Analysis of Turbine Blade Back Cambered Surface Based on NURBS Interpolation

作　　者：董久虎[1] 谌永祥[1] 李双跃[1] 曾岳飞[1] 

机构地区：[1]西南科技大学制造科学与工程学院,四川绵阳621010

出　　处：《机床与液压》2013年第1期51-53,57,共4页Machine Tool & Hydraulics

基　　金：四川省科技厅支撑计划项目(2010GZ0135)

摘　　要：弓高误差是影响汽轮机叶片加工质量的关键因素之一。根据汽轮机叶片数控切削加工的质量要求,采用NURBS曲线插补算法,并用MATLAB软件模拟了NURBS插补过程。通过UG6.0数控仿真模块进行模拟加工,分析仿真数据可知:采用NURBS插补方法模拟加工汽轮机叶片背弧面,弓高误差为0.080～1.154μm。The chord-error is one of the key factors that influence the quality of steam turbine blade. According to the require- ments of the stream turbine blade＇s processing quality, using NURBS interpolation algorithm, the interpolation process was simulated by MATLAB. UG6. 0 stimulation module was used to stimulate the processing process. Through analyzing the code, it is concluded that using NURBS interpolation method to simulate the turbine blade＇s back arc, the chord-error is 0. 080 ～1. 154 μm.

关 键 词：叶片 NURBS插补 弓高误差 数控模拟分析 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]