CFRP/铝合金叠层构件旋转超声钻削温度研究
2019-02-18
作者：赵星，马文瑞
单位：南京理工大学
摘要：碳纤维复合材料(CFRP)/铝合金叠层的钻孔机理不同于单层材料钻孔，铝合金切屑在排出孔外过程中因切削温度过高会烧伤CFRP孔壁。为了改善CFRP叠层构件加工质量，将旋转超声钻削技术(RUM)引入到该材料的加工中。针对叠层构件钻削温度过高的问题，开展了旋转超声钻削试验研究，阐明了主轴转速、进给速度及超声振幅对钻削温度的影响规律。采用多元回归分析，分别建立了CFRP和铝合金的钻削温度指数预测模型。通过对比预测值和试验值，验证了钻削温度模型构建的合理性和有效性。
关键词：旋转超声钻削；CFRP/铝合金叠层构件；钻削温度；指数预测模型
中图分类号：TG52；TH161.1文献标志码：ADOI：10.3969/j.issn.1000-7008.2019.02.008
Study on Drilling Temperature of CFRP/Aluminum Stack in
Rotary Ultrasonic Machining
Zhao Xing，Ma Wenrui
Abstract:The mechanism in drilling carbon fiber reinforced plastic(CFRP) and aluminum stacks differs from that in drilling single material.Aluminum chips evacuation through the hole deteriorates the CFRP hole quality because of the high drilling temperature.In order to improve the machining quality of CFRP/aluminum stacks，rotary ultrasonic drilling(RUD) is introduced into processing the material.Aiming at the high drilling temperature，the RUD experiment of CFRP/aluminum stacks is conducted.The influence trend of spindle speed，feed rate and ultrasonic amplitude to drilling temperature is analyzed respectively.The multiple regression analysis is applied to construct the index prediction model for drilling temperature.Meantime，by comparing between predictive value and experimental value，the rationality and effectiveness of the prediction model are verified.
Keywords:RUD；CFRP/aluminum stack；drilling temperature；index prediction model