基于驻留时间控制的压气机叶片前缘砂带磨削研究  

Research on Compressor Blade Leading Edge Abrasive Belt Grinding Based on Dwell Time Control

作　　者：黄云[1,2] 桂林 秦涛 王文玺 邹莱 李恒 HUANG Yun;GUI Lin;QIN Tao;WANG Wenxi;ZOU Lai;LI Heng(School of Mechanical and Vehicle Engineering,Chongqing University,Chongqing 400044,China;State Key Laboratory of Mechanical Transmission for Advanced Equipment,Chongqing 400044,China;Nanjing Light Aviation Power Co.,Ltd,Aero Engine Corporation of China,Nanjing 211100,China)

机构地区：[1]重庆大学机械与运载工程学院,重庆400044 [2]高端装备机械传动全国重点实验室,重庆400044 [3]中国航发南京轻型航空动力有限公司,江苏南京211100

出　　处：《湖南大学学报（自然科学版）》2024年第4期1-9,共9页Journal of Hunan University:Natural Sciences

基　　金：重庆市自然科学基金创新群体项目(CSTC2019JCYJ-CXTTX0003);中央高校基本科研业务费专项资金资助项目(2023CDJXY-022);重庆市研究生科研创新项目(CYB23021)。

摘　　要：提出了一种面向叶片前缘廓形精准控制的机器人砂带磨削加工方法.以轴流压气机叶片为研究对象,结合半赫兹接触理论和有限元仿真获取了柔性磨具和叶片前缘的接触区域内的应力分布,基于Preston方程求解材料去除函数.遍历刀位点对控制点的磨削深度,建立全局材料去除矩阵,搭建驻留时间求解非线性方程组.采用带有阻尼因子的Tikhonov正则化消除大型稀疏病态矩阵对求解精度波动的影响,将所求驻留时间转换为对应刀位点的进给速度,生成机器人加工代码.磨削试验结果表明,基于驻留时间控制的机器人砂带磨削方法能够实现给定允差范围内叶片前缘廓形的精准加工,型面误差可以控制在0.02mm以内.A robotic belt grinding method for accurate control of the blade leading edge profile was proposed in this paper.The stress distribution in the contact area between the flexible abrasive tool and the leading edge of the blade was obtained by combining the semi-Hertzian contact theory and finite element simulation,and the material removal function was solved based on the Preston equation.The global material removal matrix was established by traversing the grinding depth of the control point.The resident time was set up to solve the nonlinear equations.Tikhonov regularization with a damping factor was used to eliminate the influence of a large sparse-ill-conditioned matrix on the fluctuation of solving accuracy,and then the desired dwell time was converted to the feed speed of the corresponding cutter point so as to generate the robot machining code.The grinding experiment results show that the robotic belt grinding method based on resident time control can achieve accurate machining of the leading edge profile of the blade within a given tolerance range,and the profile error can be controlled within 0.02 mm.

关 键 词：压气机 砂带 柔性磨削 前缘廓形 驻留时间 

分 类 号：TH161[机械工程—机械制造及自动化]