条形槽微织构对PCBN刀具切削性能的影响  

Influence of micro-texture of strip groove on cutting performance of PCBN tool

作　　者：朱楠[1] ZHU Nan(College of Mechanical Engineering, Jilin Technology College of Electronic Information, Jilin 132021, Jilin, China)

机构地区：[1]吉林电子信息职业技术学院机械工程学院,吉林吉林132021

出　　处：《金刚石与磨料磨具工程》2020年第3期80-85,共6页Diamond & Abrasives Engineering

摘　　要：微织构作为刀具结构设计的新方法,对刀具的性能产生一定的影响。在刀具前刀面设计制备条槽型微织构,结合有限元仿真技术,从理论上分析条形槽微织构对切削力和已加工表面质量的影响,再设计切削试验,对有限元仿真结果进行实际验证。结果表明:有限元仿真和切削试验结果基本一致;与无织构刀具相比,条形槽微织构能够减小切削力且对主切削力的影响最显著,对进给力的影响较弱;条形槽微织构使工件表面应力、塑性应变和粗糙度均小于无织构刀具的,提高了工件已加工表面质量,其表面粗糙度仅为1.54μm。As a new method of tool structure design,micro-texture has a certain impact on the performance of cutting tool.The strip-groove micro-texture is designed and prepared on the rake face of cutting tool.Combining with the finite element simulation technology,the influence of the strip-groove micro-texture on the cutting force and the machined surface quality is theoretically analyzed.Then,the cutting experiment is designed to verify the finite element simulation results.The results show that finite element simulation and cutting test have similar conclusion.Compared with the non-textured tool,the strip-groove micro-texture can reduce the cutting force,which has the most awesome influence on the main cutting force,and weak influence on feed force.The strip-groove micro-texture makes the surface stress,plastic strain and roughness of the workpiece smaller than those of the non-texture tool.The machined surface quality of workpiece is improved.

关 键 词：条形槽微织构 有限元仿真 切削力 PCBN工具 

分 类 号：TH71[机械工程—测试计量技术及仪器] TG58[机械工程—仪器科学与技术]