CFRP复合材料/钛合金叠层螺旋铣孔工艺  

Processing research on orbital drilling of CFRP/Ti-6Al-4V stacks

作　　者：董辉跃[1] 陈光林[1] 周兰[1] 何凤涛[2] 刘顺涛[2] DONGHuiyue CHEN Guanglin ZHOU Lan HE Fengtao LIU Shuntao(Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, College of Mechanical Engineering of Zhejiang University, Hangzhou 310027, China Chengdu Aircraft Industry Group Co. , Ltd, Chengdu 610091, China)

机构地区：[1]浙江大学机械工程学院浙江省先进制造技术重点研究实验室,杭州310027 [2]成都飞机工业集团(有限)责任公司,成都610091

出　　处：《复合材料学报》2017年第3期540-549,共10页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51575479);工信部民用飞机专项(MJ-2015-G-081)

摘　　要：利用螺旋铣变偏心距加工的特点,提出了在刀具回程过程中进行二次精加工的工艺策略。通过正交试验研究了回程各工艺参数对CFRP/Ti-6Al-4V叠层孔加工质量和加工精度的影响规律,并依此优化工艺参数。试验结果显示:采用优化参数的回程精加工工艺提高了叠层孔的制孔精度,避免了复合材料孔壁加工损伤,复合材料孔粗糙度均值从Ra3.52降低到Ra1.31,入口撕裂明显改善,钛合金孔出口无毛刺。A strategy was proposed to proceed the secondary fine processing when the cutting tool returned by fully taking advantage of eccentricity machining feature of orbital drilling.The effect laws of return processing parameters to machining quality and precision of the stacked materials were researched by conducting orthogonal experiments,and the resultant optimized machining parameters were determined.The experiment results show that optimized return machining process can improve hole accuracy of CFRP/Ti-6Al-4V stacks and avoid the scratch defects of the hole wall of CFRP.An average value of CFRP hole roughness decreases fromRa3.52 to Ra1.31.Less tear formation occur at the CFRP hole entry and no burrs forms at the Ti-6Al-4V hole exit.

关 键 词：CFRP复合材料/钛合金叠层 螺旋铣孔 回程精加工 正交试验 加工质量 

分 类 号：TB332[一般工业技术—材料科学与工程]