工艺参数对短电弧铣削7075加工性能影响的研究  

Research on the effect of process parameters on the machining performance of short electric arc milling 7075

作　　者：汪兵兵 徐建峰 沙磊 WANG Bingbing;XU Jianfeng;SHA Lei(School of Aviation Academy Changji University,Changji 831100;Qingdao Yunchuang Environmental Technology Co.,Qingdao 266000)

机构地区：[1]昌吉学院航空学院,新疆昌吉831100 [2]青岛云创环境科技有限公司,山东青岛266000

出　　处：《五金科技》2024年第5期87-91,共5页Hardware

基　　金：昌吉学院校级科研课题“航空7075铝合金短电弧铣削加工工艺研究”(2022KY006);新疆维吾尔自治区自然科学基金青年科学基金项目(联合基金)“航空难切削材料的短电弧-机械复合加工关键技术研究”(2022D01C738);新疆维吾尔自治区高等学校科学研究计划资助(XJEDU2022P115);昌吉学院校级课题铸态GH3230镍基高温合金热变形行为与组织演化规律研究(KYLK012)。

摘　　要：航空铝合金7075强度高和材质轻等特点,使其在五金、航空、军事、汽车等领域得到了普遍应用。然而,在机械加工中存在变形和材料损耗大等问题,加工难度较大。短电弧铣削技术能实现其高效高质加工。为探究不同参数对其加工质量的影响,通过单因素短电弧实验,研究表明:主轴转速、脉冲频率与材料去除率、相对电极损耗率和表面粗糙度呈负相关,主轴转速500r/min存在最大去除率、电极损耗率和表面粗糙度。电压、占空比与材料去除率、电极损耗率和表面粗糙度整体呈正相关。电极损耗率与材料去除率和表面粗糙度正相关。The characteristics of aerospace aluminum alloy 7075,such as high strength and light material,make it commonly used in metal hardware,aviation,military,automotive and other fields.However,there are problems such as deformation and material loss in machining,which makes it difficult to process.Short electric arc milling technology can realize its efficient and high quality processing.In order to explore the influence of different parameters on its machining quality,through the single-factor short arc experiment,the study shows that:spindle speed,pulse frequency and material removal rate(MRR),relative electrode wear rate(REWR)and surface roughness are negatively correlated with the spindle speed of 500r/min there is a maximum removal rate,REWR and surface roughness.Voltage,duty cycle and MRR,REWR and surface roughness are positively correlated.REWR is positively correlated with MRR and surface roughness.

关 键 词：铝合金7075 短电弧铣削 加工效率 实验研究 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]