薄壁CFRP管端面磨削及铣削加工质量对比  

Comparative study on the machining quality of thin-walled CFRP circular cell in end face grinding and milling

作　　者：田俊超 鲍岩[1] 康仁科[1] 张泽旭 郭东明[1] 董志刚[1] TIAN Junchao;BAO Yan;KANG Renke;ZHANG Zexu;GUO Dongming;DONG Zhigang(ey Laboratory of High-Performance Precision Manufacturing,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学高性能精密制造全国重点实验室,大连116024

出　　处：《复合材料学报》2024年第5期2503-2519,共17页Acta Materiae Compositae Sinica

基　　金：国家重点研发计划(2019YFA0708902);大连市高层次人才创新支持计划项目(2020RD02);中央高校基本科研业务费(DUT22LAB501);“兴辽英才计划”项目(XLYC2001004)。

摘　　要：阵列复材管是由薄壁碳纤维增强树脂基复合材料(CFRP)管在水平面内二维密排形成的蜂窝结构材料,可应用于航空航天等领域。为探索端面磨削和铣削阵列复材管的可行性,以CFRP管元胞为研究对象,考虑其薄壁特征引入切出角度为实验参数,并开展端面加工实验研究切出角度、刀具实际进给率、轴向切削深度和切削速度对已加工表面形貌和力的影响。结果表明:切出角度通过影响加工区域的材料支撑状态和纤维切削角影响损伤的类型及形成过程,过大或过小的切出角度均可能产生加工损伤;通过降低刀具实际进给率、轴向切削深度或提升切削速度均可一定程度上降低切削力并抑制端面磨削时小切出角度条件下的损伤,但上述措施无法抑制端面铣削损伤。端面磨削相比于端面铣削具有更大的高效低损伤加工工艺操作区间,建议优先选用。Carbon fiber reinforced resin composite(CFRP)circular cell honeycomb is with honeycomb structure formed by 2D dense arrangement of thin-walled circular cells in a horizontal plane,which can be applied in the aerospace.In order to explore the feasibility of end face grinding and milling on CFRP circular cell honeycomb,CFRP circular cell was identified as the experimental subject and exit angle was introduced considering the thin-walled characteristic of the cell in this research.End face machining experiments were conducted to study the effects of exit angle,material removal rate,axial cutting depth,and cutting speed on the machined surface morphology and force.The results indicate that the exit angle affects the material support state of the processing area and the fiber cutting angle to influence the formation of damage and excessive or insufficient exit angles may cause damage.By reducing the real feed rate,axial cutting depth or increasing the cutting speed may reduce cutting force and restrain the damage under the condition of small exit angle in end face grinding to some extent,but the above measures cannot have an impact on milling damage.End face grinding is preferred because of its larger efficiency and low-damage machining process operation range.

关 键 词：CFRP 蜂窝 铣削 磨削 加工损伤 切削力 

分 类 号：TB332[一般工业技术—材料科学与工程]