可变径向切深下螺旋齿球头铣刀微细铣削(英文)  

Investigation of helical ball micro milling with variable radial immersion

作　　者：曹自洋[1] 薛晓红[1] 李华[1] 郭丽华[1] 

机构地区：[1]苏州科技学院机械工程学院,江苏苏州215009

出　　处：《机床与液压》2014年第6期86-90,共5页Machine Tool & Hydraulics

基　　金：Project supported by the Jiangsu Natural Science Foundation(BK2011314);Suzhou Science and Technology Projects(SYG201244);NSFC(51075288)

摘　　要：微细铣削加工是使用微型立铣刀在高主轴转速下制造微型元件的加工方式,分析切削力和加工稳定性对表征微细铣削加工过程起着重要的作用。提出一种数值分析的方法来研究螺旋齿球头立铣刀在可变径向切削深度下的微细铣削加工过程。首先建立了球头铣刀微细铣削的模型,并推导了切削力的计算公式;采用时域仿真的方法详细计算了螺旋齿球头立铣刀和平头立铣刀铣削加工的切削力,并对比了二者切削力仿真的结果;通过时域和频域研究相结合的方式详细分析了小径向切深下球头铣刀微细铣削的稳定性。最后,分析得到了Hopf-flip分岔,并深入对比和分析了不同加工条件下铣削加工的稳定性状况。Micro mil ing can fabricate miniaturized components using micro end mil at high rota-tional speeds.The analysis of cutting force and stability in micro mil ing plays an important role in characterizing the cutting process.A numerical analysis method is presented to investigate the helical bal micro mil ing process with variable radial immersion.The schematic model of bal mi-cro mil ing is constructed and the cutting force calculation formula is derived.And then,a detailed time domain simulation for micro mil ing forces between helical bal and square end mil s is carried out,and the results are compared.In addition,the stability lobe of bal micro mil ing with low ra-dial immersion is researched in detail through time domain and frequency domain methods.Final-ly,the Hopf and flip bifurcations are explored and the simulation results between variable stability cases are deeply compared and analyzed.

关 键 词：螺旋齿球头立铣刀 微细铣削 径向切削深度 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]