摘要
为了探究2.5D C/SiC复合材料铣削加工的材料去除特性,分别选用端铣刀和鱼鳞铣刀对2.5D C/SiC复合材料开展普通铣削和超声振动辅助铣削实验。分析了四种铣削工况下切削力、切削温度的变化规律,研究了0°、90°和z向针刺纤维的去除特性。结果表明,相比于传统端铣刀和普通铣削,鱼鳞铣刀和超声振动辅助铣削分别可以显著地降低切削力和切削温度。超声振动辅助铣削可以使纤维的整体去除变为破碎去除,减小表面缺陷。鱼鳞铣刀和超声振动辅助铣削的组合工艺方式可以较大程度地降低表面缺陷、切削力和切削温度,提高工件表面质量,为2.5D C/SiC复合材料低损伤铣削提供了可行性。
To explore the material removal characteristics of 2.5D C/SiC composite miling,end mills and fish-scale mills were used to perform conventional milling(CM)and ultrasonic vibration-assisted milling(UAM)on 2.5D C/SiC composites.The changing laws of cutting force and cutting temperature under four milling conditions were analyzed,and the removal characteristics of 0°,90°and z-direction needle punched fibers were studied.The results show that,compared with traditional end mill and CM,fish-scale mills and UAM can significantly reduce cutting force and cutting temperature,respectively.UAM can change the overall removal of fibers into broken removal and reduce surface defects.The combined process of fish-scale mills and UAM can greatly reduce surface defects,cutting force and cutting temperature,improve the surface quality of the workpiece,and provide feasibility for low-damage milling of 2.5D C/SiC composites.
作者
侯兆鑫
刘畅
高磊
HOU Zhaoxin;LIU Chang;GAO Lei(Tianjin Major Laboratory of Advanced Mechatronics Equipment Technology,School of Mechanical Engineering,Tiangong University,Tianjin 300387,China)
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2024年第4期110-116,共7页
Aerospace Materials & Technology
基金
国家自然科学基金项目(51705362)
天津市研究生科研创新项目(2021YJSB233)。
