文档介绍：数控系统高性能微段插补技术研究与应用
陶佳安1,游清宁2,施群3
(1 上海大学通信与信息工程学院上海 200072;2 上海三棱电梯有限公司上海 200051;
3 上海大学机械工程与自动化学院上海 200072)
摘要:针对在复杂曲线曲面加工时,由CAM产生的连续微段在加工中由于频繁加减速所带来的加工精度和速度的矛盾问题。在CNC中采用微段插补技术对连续微段进行实时样条重构及递推插补以实现对曲面的高速高精度加工。给出的微段插补技术包括新设计的代数指数样条函数,结合速度规划给出的样条重构及样条曲线的递推插补算法。应用微段插补技术进行的样件数控加工实验中,在保证原曲线加工轮廓误差的同时,加工轨迹以μm级精度逼近原曲线,并且加工速度提高了5~。实验结果表明,算法在加工轨迹的整体上实现了进给速度的平滑衔接,在加工过程中避免了频繁的加减速,机床运行平稳,加工精度高,表面质量好的同时提高了加工效率。
关键词:数控系统;微段;样条插补;代数指数样条;快速递推
中图分类号:TG659 文献标识码:A 国家标准学科分类代码:
Research and application of high performance micro line block
interpolation algorithm C
Tao Jia’an1, You Qingning2, Shi Qun3
(1 School munication and Information Engineering, Shanghai University, Shanghai 200072, China;
2 Shanghai Mitsubishi Elevator Co. Ltd, Shanghai 200051, China;
3 School of Mechatronics and Automation, Shanghai University, Shanghai 200072, China)
Abstract:Aiming at conflict between machining accuracy and speed in process of machining essive micro-line, which is generated from CAM in manufacturing work-pieces plex outline, caused by frequent acceleration and deceleration, a micro-line interpolation algorithm is presented. The new algorithm adopts micro-line interpolation technique to realize real time spline reconstruction and recursion interpolation of the micro-line to meet the speed and accuracy requirements of plex outline. The proposed micro-line interpolation technique inc