基于血蚶表面微结构的仿生刀具干切削GH4169的性能研究  

Performance Research on Bionic Tools Based on Surface Microstructures of Blood Clams in Dry Cutting of GH4169

作　　者：连云崧[1] 谢超平 周伟[1] 褚旭阳[1] 赵国龙 LIAN Yunsong;XIE Chaoping;ZHOU Wei;CHU Xuyang;ZHAO Guolong(Department of Mechanical and Electrical Engineering,Xiamen University,Xiamen 361102;Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016)

机构地区：[1]厦门大学机电工程系,厦门361102 [2]南京航空航天大学江苏省精密微制造技术重点实验室,南京210016

出　　处：《机械工程学报》2021年第13期242-251,共10页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51505399,51975496);福建省自然科学基金(2017J05088);江苏省精密微制造技术重点实验室和中央高校基本科研业务费专项资金(20720200068)资助项目。

摘　　要：GH4169具有优异的抗疲劳、抗氧化和耐腐蚀性能,因此广泛应用于航空航天、核能、石油工业等领域,但切削过程中切削力大、切削温度高、刀具粘结磨损严重等切削特性使其成为典型的难加工材料。为改善刀具切削GH4169的恶劣环境,利用血蚶表面微结构具有的减摩耐磨特性,将其应用于刀具前刀面的刀-屑接触区域,通过激光加工制备出仿生刀具。采用切削仿真优化仿生刀具表面微结构参数,选取三组仿生刀具和一组普通刀具进行干切削对比试验。研究结果表明,相比于普通刀具,经过优化后的仿生刀具T8和T20干切削GH4169时在切削力、切削温度、粘结磨损等方面能起到一定程度的改善作用,而未经优化的仿生刀具T25改善效果并不显著。GH4169 has excellent anti-fatigue,anti-oxidation and corrosion resistance properties,so it is widely used in aerospace,nuclear energy,petroleum industry and other fields.However,the cutting characteristics such as large cutting force,high cutting temperature and severe tool bonding wear during the cutting process make it becomes a typical difficult-to-process material.In order to improve the harsh environment of cutting GH4169,utilize the anti-friction and wear-resistant properties of the surface microstructure of blood clams,it was applied to the tool-chip contact area of the tool rake face.And the bionic cutting tool was prepared by laser processing.Using cutting simulation to optimize the surface microstructure parameters of the bionic tool,three groups of bionic cutting tools and a group of ordinary tools were selected for dry cutting comparison tests.The research results showed that,compared with ordinary tools,the optimized bionic tools T8 and T20 can improve the cutting force,cutting temperature,adhesive wear and other aspects to a certain extent when dry cutting GH4169,while the improvement effect of the non-optimized bionic tool T25 was not significant.

关 键 词：仿生刀具 干切削 微结构 切削性能 GH4169 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]