摘要
针对航空发动机叶片前后缘抛光加工效率低、表面质量及轮廓精度难以保证等问题开展了整体叶盘叶片前后缘自动化抛光工艺研究。分析了工艺参数对前后缘抛光接触区域尺寸的影响规律,建立了法向抛光力预测模型,预测值与实际值均方根误差为1.24 N;基于Preston方程对抛光接触区域内压缩量、主轴转速、海绵砂圈半径、进给速度和磨具粒度对材料去除的影响规律进行了建模。基于所提出的前后缘抛光材料去除深度预测模型进行实验,结果表明,叶片前后缘表面粗糙度降低至0.18μm,验证了该预测模型可以有效地预测材料去除深度,海绵砂圈可以有效改善叶片前后缘粗糙度。
Aiming at the problems of low polishing efficiency,difficulty in ensuring surface quality and profile accuracy of the leading and trailing edges of aero-engine blades,a study on the automated polishing processes for the leading and trailing edges of blisk blades was conducted.The influence of processing parameters on the size of the polishing contact area at the leading and trailing edges was analyzed,and a predictive model for normal polishing force was established,with a root mean square error of 1.24 N between the predicted and actual values.Based on the Preston equation,the effects of compression amount,spindle speed,sponge abrasive wheel radius,feed rate,and abrasive grit size on material removal in the polishing contact area were modeled.Experiments were conducted using the proposed predictive model for material removal depth at the leading and trailing edges.The experimental results show that the value of surface roughness of the blade leading and trailing edges is reduced to 0.18μm,verifying that the predictive model may effectively forecast material removal depth.Additionally,the sponge abrasive wheel is proven to effectively improve the surface roughness of the blade leading and trailing edges.
作者
刘承硕
蔺小军
钟波
邓文辉
LIU Chengshuo;LIN Xiaojun;ZHONG Bo;DENG Wenhui(Laser Fusion Research Center,China Academy of Engineering Physics,Mianyang,Sichuan,621900;Key Laboratory of High Performance Manufacturing for Aero Engine,Ministry of Industry and Information Technology,Northwestern Polytechnical University,Xi'an,710072)
出处
《中国机械工程》
北大核心
2025年第12期3047-3056,共10页
China Mechanical Engineering
基金
中物院科学技术发展基金(TCGH0812)。
关键词
整体叶片前后缘
抛光接触区域
材料去除深度
粗糙度
leading and trailing edges of blisk blade
polishing contact zone
material removal
roughness
