自制硬质合金刀具加工钛合金时的铣削性能研究  

Study on the milling performance of self-fabricated cemented carbide tools in the machining process of titanium alloy

作　　者：吴春亚[1,2] 王广洲 李曦光 齐彪 陈妮 陈明君 WU Chunya;WANG Guangzhou;LI Xiguang;QI Biao;CHEN Ni;CHEN Mingjun(State Key Laboratory of Robotics and System,Harbin Institute of Technology,Harbin 150080,CHN;School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,CHN;College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,CHN)

机构地区：[1]哈尔滨工业大学机器人技术与系统国家重点实验室,黑龙江哈尔滨150080 [2]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001 [3]南京航空航天大学机电学院,江苏南京210016

出　　处：《制造技术与机床》2021年第2期70-75,80,共7页Manufacturing Technology & Machine Tool

基　　金：国家重点研发计划资助项目(2017YFB0305900)

摘　　要：利用有限元仿真手段,以切削力和切削温度作为评价标准,完成了钛合金加工用硬质合金四刃平头立铣刀几何参数的设计与优选,并基于优化后的参数自行制备得到了硬质合金刀具实体。通过开展自制立铣刀在Ti-6Al-4V材料表面的槽型铣削实验,系统研究了切削用量对加工表面质量,尤其是槽型边沿毛刺的影响趋势。根据自制与商用四刃平头立铣刀在相同切削条件下的加工效果及刀具磨损情况对比,证实了自制刀具在减小毛刺尺寸、降低加工表面粗糙度以及提高刀具使用寿命等方面的性能优于商用刀具。Taking cutting force and cutting temperature as the evaluation criteria,the design and optimization of geometric parameters of the carbide four-edge flat end mills for titanium alloy processing were completed by means of finite element simulations.On the basis of the optimized parameters,the sample carbide tools were fabricated and the experiments with grooves milled by the sample tools were carried out on the Ti-6Al-4V surfaces.The influence of milling parameters on the quality of machined surface,especially the burrs at the groove edges,was investigated systematically.By comparing the machining effect and the tool wearing between the self-fabricated and commercial four-edge flat end mills under the same cutting conditions,we confirmed that the performance of self-fabricated tools was better than that of the commercial tools in many aspects,including the reduction of burr size,improvement of surface roughness,and extending the service life of tools,etc.

关 键 词：平头立铣刀 几何参数优化设计 钛合金 铣削性能 表面毛刺 

分 类 号：TG714[金属学及工艺—刀具与模具] TH161[机械工程—机械制造及自动化]