7075铝合金铣削残余应力及表面质量试验研究  

Experimental Study on Residual Stress and Surface Quality of 7075 Aluminum Alloy Milling

作　　者：刘启蒙 许金凯[1] 于化东[1] 于占江[1] 李一全[1] 弯艳玲[1] 廉中旭 

机构地区：[1]长春理工大学精密制造及检测技术国家地方联合工程实验室

出　　处：《工具技术》2018年第1期44-47,共4页Tool Engineering

基　　金：国家自然科学基金(51275056)

摘　　要：采用直径1的4刃硬质合金立铣刀(4HCE040110S04)对7075铝合金进行单因素铣槽试验,研究已加工表面粗糙度、铣削表层残余应力以及槽底表面质量随切削参数的变化规律。通过试验得出以下结论:随着切削速度v的增大,槽底面粗糙度逐渐增大,已加工窄槽表层残余应力逐渐减小,毛刺与卷边增多;随着进给速度的增大,铣削的窄槽底面粗糙度逐渐增大,已加工窄槽表层残余应力逐渐增大,毛刺与卷边明显增多;随着切削深度的增大,铣削的窄槽底面表面粗糙度逐渐增大,已加工窄槽表层残余应力逐渐增大,毛刺与卷边增多;铣削的窄槽底面两走刀路径之间存在明显的隆起。Through the 4 edges of cemented carbide cutter 1 diameter（ 4 HCE040110 S04） of 7075 Aluminum-alloy for single factor milling experiments,the machined surface roughness and milling surface residual stress and surface quality with the cutting parameters（ the cutting speed,the feed rate and the cutting depth） changes are determined. The experiments following conclusions are below： with increase of the cutting speed,the groove bottom surface roughness increases,the narrow groove machined surface residual stress decreases gradually,and the edge burr increased; with increase of the feed speed,milling slot bottom surface of bottom surface roughness increases,the machined surface residual stress of the narrow groove force increases gradually,and the burr edge increased significantly; with increase of the cutting depth,cutting the narrow groove bottom surface roughness increases,the narrow groove machined surface residual stress increases gradually,and the edge burr increased; the bottom surface of the two narrow groove milling tool path between the apparent uplift,the reason is 7075 aluminum alloy soft material and the cutting width of large plastic flow caused by large effect on milling tool under the extrusion.

关 键 词：铝合金 窄槽 表面粗糙度 残余应力 

分 类 号：TG54[金属学及工艺—金属切削加工及机床] TH164[机械工程—机械制造及自动化]