摘要
基于AdvantEdge软件建立了7075-T6铝合金高速切削二维模型,通过实验和仿真方法分析了切削参数对切削力、切削温度以及残余应力的影响规律,得到不同切削参数下工件表面二维和三维形貌。研究结果表明:切削温度随切削速度的增大而增大,在切削速度达到3768mm/min后,切削温度逐渐减小;切削深度与切削温度呈正相关;当进给量较低时,切削温度随进给量的增大而增大,在进给量达到0.12mm/z后,切削温度呈现平稳的变化趋势;当切削速度较低时,工件表面粗糙度较大,表面有明显的切屑附着并伴随划伤现象;切削深度对已加工表面光洁度没有显著影响;随着进给量的增大,表面粗糙度也随之增大;切削加工后,表面残余应力主要表现为残余压应力,随切削参数的变化残余应力呈现先减小后增大再减小的变化趋势,并在40~70μm之间达到峰值。
A two-dimensional model of 7075-T6 aluminum alloy high-speed cutting is established based on AdvantEdge.Through experiments and simulation methods, the influence of cutting parameters on cutting force, cutting temperature and residual stress is proved, and the two-dimensional and corresponding three-dimensional topography of the workpiece surface under different cutting parameters are obtained.The results show that the cutting temperature increases with the increase of cutting speed, and gradually decreases when cutting speed is higher than 3768 mm/min.The depth of cut is positively related to the cutting temperature.When the feed rate is low, the cutting temperature increases with the increase in the feed rate, when the feed rate changed to 0.12 mm/z, the cutting temperature show a steady trend of change.When the cutting speed is low, the surface roughness of the workpiece is larger, the chips are clearly attached to the workpiece and accompanied by scratches on the surface.The depth of cut has no significant effect on the finished surface finish.Surface roughness increases with the increase of feed rate.Surface residual stress is mainly manifested as residual compressive stress after cutting.As the cutting parameters change, the residual stress presents a trend of first decreasing, then increasing and then decreasing, and peak between 40~70μm.
作者
宋爱利
岳修杰
刘俊伶
翟彦春
王鹏昊
张平
于晓
Song Aili;Yue Xiujie;Liu Junling;Zhai Yanchun;Wang Penghao;Zhang Ping;Yu Xiao(College of Mechanical and Electrical Engineering,Qingdao Huanghai University,Qingdao,Shandong 266427,China;不详)
出处
《工具技术》
北大核心
2022年第11期37-43,共7页
Tool Engineering
基金
国家自然科学基金(51705270)
山东省青创计划项目(2019KJB022)。
作者简介
第一作者:宋爱利,本科,青岛黄海学院智能制造学院,266427山东省青岛市;通信作者:张平,博士,副教授,青岛黄海学院智能制造学院,266427山东省青岛市。
