工件表面微结构诱导断屑的可行性及机理研究  

Study on Feasibility and Mechanism of Micro-groove Induced Chip Breaking

作　　者：康正阳 赵曼 杨宇娇 尚正阳 刘城澄 Kang Zhengyang;Zhao Man;Yang Yujiao;Shang Zhengyang;Liu Chengcheng(School of Mechanical and Power Engineering,Nanjing Technology University,Nanjing 211800,China;不详)

机构地区：[1]南京工业大学机械与动力工程学院 [2]安徽工程大学机械与汽车工程学院

出　　处：《工具技术》2023年第4期11-17,共7页Tool Engineering

基　　金：江苏省高等学校自然科学研究面上项目(19KJB460005);江苏省博士后创新基金面上项目(2020Z410);江苏省产学研合作项目(BY2019006)。

摘　　要：针对高强高韧材料车削加工的切屑控制问题,提出利用工件表面槽型微结构,诱导切屑发生周期性断裂的切屑控制新方法,采用激光烧蚀技术在316L不锈钢工件表面制备微结构,从切屑形态、切屑质量和切削力多角度验证新方法的切屑控制效果,揭示其改善已加工表面粗糙度的效果,运用有限元方法揭示微结构诱导断屑的宏观和微观耦合机制。本研究为解决难加工材料的切屑控制问题提供了新路径,也为关键轴类零件提质增效提供了新突破口。In order to solve the chip control problem in turning of difficult-to-cut materials,a novel chip control method called groove induced chip-breaking(GICB)is developed.The laser ablation technology is employed to fabricate microstructure on 316L stainless steel workpiece surface.The feasibility of new method is verified from the aspects of chip morphology,cutting quality and cutting force,and its effect on surface roughness of machined surface is investigated as well.The simulative FEM model is established to reveal the macro-micro coupling mechanism of GICB method.The present study not only provides a new approach of chip control,but also provides a potential way for improving the quality and efficiency in manufacturing of key shaft parts.

关 键 词：切屑控制 难加工材料 316L不锈钢 激光刻蚀 

分 类 号：TG501.1[金属学及工艺—金属切削加工及机床] TH161[机械工程—机械制造及自动化]