CVD金刚石刀具微铣削AA356铝合金的磨损分析  

Wear analysis of CVD diamond tool in micro-milling AA356 aluminum alloy

作　　者：张亚博 白清顺[1] 何欣[1] 庆凌博 岳松洁 刘新 ZHANG Yabo;BAI Qingshun;HE Xin;QING Lingbo;YUE Songjie;LIU Xin(School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China)

机构地区：[1]哈尔滨工业大学机电工程学院,哈尔滨150001

出　　处：《金刚石与磨料磨具工程》2021年第1期44-50,共7页Diamond & Abrasives Engineering

基　　金：国家自然科学基金项目(52075129,51575138,51535003)。

摘　　要：AA356铝合金已广泛应用于航空航天等领域,但其在微细加工过程中刀具磨损严重且相关机理尚不明晰。为揭示工艺参数对CVD金刚石刀具微铣削AA356铝合金的刀具磨损影响机制,基于正交试验和响应曲面法开展了微细加工试验,采用最小二乘法和粒子群优化算法建立刀具磨损的预测方程,分析刀具的磨损形貌和切削用量对刀具磨损的影响规律。结果表明:刀具磨损主要源于复杂切削载荷引起的涂层脱落和粘接磨损;刀具磨损的主要影响因素是轴向切削深度,其次是进给速度,最后是主轴转速;主轴转速和进给速度对刀具磨损的影响存在较强的交互耦合作用。AA356 aluminum alloy has been widely used in aerospace and other fields.However,it is faced with severe tool wear in the process of micro machining and the relevant mechanism is not clear.To reveal the influence mechanism of cutting parameters on the tool wear of CVD diamond tool micro milling AA356 aluminum alloy,micro machining experiments were carried out with orthogonal test design and response surface method.The prediction equation of tool wear was established by using least square method and the particle swarm optimization algorithm.Besides,the mechanism of tool wear and the effect of cutting parameters for tool wear were analyzed.The results show that the main wear mechanisms of micro-tool are coating delamination and adhesive wear induced by complex cutting loads.The main factor of influencing tool wear is the axial cutting depth,followed by the feed speed and the effect of spindle speed on tool wear is minimal.A strong coupling effect can be found between the spindle speed and the feed speed.

关 键 词：CVD金刚石刀具 AA356铝合金 切削参数 正交试验 磨损 

分 类 号：TG71[金属学及工艺—刀具与模具] TG58[金属学及工艺—金属切削加工及机床]