激光辅助高速微车削C_(f)/SiC陶瓷基复合材料切削力影响因素试验研究  

Experimental Research on Influencing Factors of Cutting Force in Laser-Assisted High-Speed Micro-turning C_(f)/SiC Ceramic Matrix Composite

作　　者：田纪文 许金凯[1] 翟昌太 聂小雨 孙贵斌 于化东[1] TIAN Jiwen;XU Jinkai;ZHAI Changtai;NIE Xiaoyu;SUN Guibin;YU Huadong(Ministry of Education Key Laboratory for Cross Scale Micro-nano Manufacturing Laboratory,Changchun University of Science and Technology,Changchun Jilin 130022,China)

机构地区：[1]长春理工大学跨尺度微纳制造教育部重点实验室,吉林长春130022

出　　处：《机床与液压》2022年第8期14-19,共6页Machine Tool & Hydraulics

基　　金：国家重点研发计划项目(2018YFB1107403);国家自然科学基金项目(U19A20103)。

摘　　要：C_(f)/SiC陶瓷基复合材料作为一种新型耐高温材料,在航空航天领域具有广泛的应用前景,但难加工特性带来了新的挑战。采用激光辅助高速微车削机床在C_(f)/SiC陶瓷基复合材料上进行外圆切削加工,以主切削力F_(z)为目标,优化C_(f)/SiC陶瓷基复合材料的切削参数。分别采用单因素试验与多因素正交试验研究工件转速n、切削深度a_(p)、进给速度v_(f)与功率密度q对x、y和z 3个方向切削力的影响规律,通过方差分析法指出各加工参数对F_(z)影响的主次顺序及最优参数组合。试验结果表明:与常规高速微车削相比,激光辅助高速车削技术能够改善各个方向切削力大小,切削力最大降低81.436%;各试验因素对F_(z)的影响从大到小依次为q>n>a_(p)>v_(f);最优加工参数组合为:q=400 W/mm^(2),n=4 000 r/min,a_(p)=20μm,v_(f)=20 mm/min时,F_(z)最佳为1.831 N。As a new high-temperature material, C_(f)/SiC ceramic matrix composites has a wide applications range in aerospace field, but its difficult processing characteristics brings new challenges. A laser-assisted high-speed micro-turning machine was used to perform external cutting on the C_(f)/SiC ceramic matrix composite material, with the main cutting force F_(z)as the target, the cutting parameters of C_(f)/SiC ceramic matrix composites were optimized.Single factor test and multi-factor orthogonal test were used to study the influence of workpiece speed n, cutting depth a_(p), feed speed v_(f) and power density q on the cutting force in the three directions of x, y and z.Through variance analysis method, the primary and secondary order of the influence of each processing parameter on F_(z)and the optimal parameter combination were pointed out. The results show that: compared with conventional high-speed micro-turning, using laser-assisted high-speed micro-turning technology can improve the cutting force in all directions, and the maximum cutting force is reduced by 81.436%;the influence of each test factor on F_(z)from large to small is q>n>a_(p)>v_(f);the optimal combination of processing parameters is: q=400 W/mm^(2),n=4 000 r/min, a_(p)=20 μm, and v_(f)=20 mm/min, the best F_(z)is 1.831 N.

关 键 词：C_(f)/SiC陶瓷基复合材料 激光辅助高速微车削 切削力 方差分析 

分 类 号：TH162[机械工程—机械制造及自动化] TB33[一般工业技术—材料科学与工程]