复合材料反向进给螺旋铣孔工艺研究  

Investigation on Reverse Helical Milling of Composites

作　　者：尉言振 董志刚[1] 杨国林[1] 鲍岩 张烘州 康仁科[1] WEI Yanzhen;DONG Zhigang;YANG Guolin;BAO Yan;ZHANG Hongzhou;KANG Renke(Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education,Dalian University of Technology,Dalian 116024,China;Shanghai Aircraft Manufacturing Co.Ltd.,Shanghai 201324,China)

机构地区：[1]大连理工大学精密与特种加工教育部重点实验室,大连116024 [2]上海飞机制造有限公司,上海201324

出　　处：《航空制造技术》2019年第22期76-81,87,共7页Aeronautical Manufacturing Technology

基　　金：国家重点研发计划项目课题（2017YFB1301701）;国家科技重大专项课题（2019ZX04019001）;上海飞机制造有限公司科研项目协作合同（COMAC-SFGS-2018-2782）

摘　　要：复合材料制孔在航空航天领域中的需求量很大,其中出口易产生分层、撕裂和毛刺等缺陷是目前面临的主要问题。针对出口缺陷的问题,提出了一种反向进给螺旋铣孔新工艺,设计了特殊形状的专用刀具,并分析了该工艺抑制分层的机制。针对金属/复合材料叠层结构件和单独复合材料构件的制孔需求,分别提出了相应的工艺方案,并通过试验验证了方案的可行性。在试验过程中,记录出口缺陷的产生和去除过程,并进行对比分析。结果表明,反向进给螺旋铣孔工艺可以有效抑制复合材料出口缺陷的形成,显著提高制孔质量。There is a great demand for hole making of composites in aerospace, in which the defects at exit of holes such as delamination, crack and burr are the main problems at present. In order to suppress the defects at hole exit, a new process of reverse helical milling was proposed. A special tool with special shape was designed and the mechanism of suppressing delamination was also analyzed for the new process. The corresponding schemes were proposed, the feasibility of which was verified by experiments for the hole-making demand of metal/composites laminated structures and composites components. During the experiment, the results were compared and analyzed by recording the process of producing and removing defects. The results show that the reverse helical milling can obviously improve the quality of the hole making by effectively suppressing the formation of the defects of the composites.

关 键 词：复合材料 叠层结构 制孔 分层 出口缺陷 螺旋铣孔 背部支撑 

分 类 号：TB3[一般工业技术—材料科学与工程]