切削刀具刃口钝化复合结构优化设计
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摘要
提出和建立了面向刀具刃口钝化结构研究的三维铣削加工有限元仿真模型,研究了材料本构关系模型有限元仿真关键技术;进一步进行了切削验证实验,结果表明所建立的有限元模型是正确的;最后,以钛合金加工为例,利用有限元模型,针对倒棱刃、消振棱刃、白刃三种刀具刃口型式,对不同刃带宽度和不同刃口型式下的切削效果进行了比较和分析。研究结果表明:倒棱刃口型式与圆弧钝化结构是最佳匹配的,倒棱与钝圆形成的复合结构是切削钛合金的最优刀具刃口微结构。
A three-dimensional milling finite element simulation model for studying cutting tool edge honing structure was put forward and established. The key finite element simulation technique of material constitutive model was studied. The cutting experiments were performed to validate the finite element model. An agreement was obtained between finite element simulations results and experiments results,showing that the finite element model developed in it was right. On the basis of above study,taking titanium alloy cutting as example,for three kind of tool edge types of chamfered edge,vibration free edges and naked edge,the cutting processes were simulated by using this finite element model,and the cutting effects at different edge width and different edge type were compared and analyzed. The study results show that the chamfer structure is optimum edge structure for matching the hone edge,and the composite structure of chamfered edge and honing roundness is optimum geometry for cutting of titanium alloy.
A three-dimensional milling finite element simulation model for studying cutting tool edge honing structure was put forward and established. The key finite element simulation technique of material constitutive model was studied. The cutting experiments were performed to validate the finite element model. An agreement was obtained between finite element simulations results and experiments results,showing that the finite element model developed in it was right. On the basis of above study,taking titanium alloy cutting as example,for three kind of tool edge types of chamfered edge,vibration free edges and naked edge,the cutting processes were simulated by using this finite element model,and the cutting effects at different edge width and different edge type were compared and analyzed. The study results show that the chamfer structure is optimum edge structure for matching the hone edge,and the composite structure of chamfered edge and honing roundness is optimum geometry for cutting of titanium alloy.
引文
[1]夏雪.刀具刃口钝化技术及方法的研究[J].装备制造技术,2014(10):204-205.(Xia Xue.Cutting tool edge passivation technology and method of research[J].Equipment Manufacturing Technology,2014(10):204-205.)
[2]王林静,张伟,干为民.硬质合金刀具刃口钝化方式对比试验研究[J].工具技术,2013,47(12):25-28.(Wang Lin-jing,Zhang Wei,Gan Wei-min.Cemented carbide tool edge passivation contrast experimental research[J].Tool Engineering,2013,47(12):25-28.)
[3]刘华林,陈守强.硬质合金刀片刃口钝化方法与实验研究[J].机床与液压,2014,42(19):73-75.(Liu Hua-lin,Chen Shou-qiang.Passivation method and experimental study of carbide blade edge[J].Hydromechatronics Engineering,2014,42(19):73-75.)
[4]蔡晓,王帅,辛开开.YT15硬质合金刀片刃口电化学钝化实验研究[J].工具技术,2015,49(5):29-31.(Cai Xiao,Wang Shuai,Xin Kai-kai.Experimental research on electrochemical passivation on YT15 carbide blade edge[J].Tool Engineering,2015,49(5):29-31.)
[5]朱晓辉,李淑娟,韩晓君.刃口钝化对丝锥切削性能影响的研究[J].制造技术与机床,2014(5):104-106.(Zhu Xiao-hui,Li Shu-juan,Han Xiao-jun.The study of effects on tapping process of passivated taps[J].Manufacturing Technology and Machine Tools,2014(5):104-106.)
[6]G.R.Johnson,W.H.Cook.A constitutive model and data for metals subjected to large strains,high strain rates and high temperature[J].In:Proceedings of the Seventh International Symposium on Ballistics,The Netherlands,1983:541-547.
[2]王林静,张伟,干为民.硬质合金刀具刃口钝化方式对比试验研究[J].工具技术,2013,47(12):25-28.(Wang Lin-jing,Zhang Wei,Gan Wei-min.Cemented carbide tool edge passivation contrast experimental research[J].Tool Engineering,2013,47(12):25-28.)
[3]刘华林,陈守强.硬质合金刀片刃口钝化方法与实验研究[J].机床与液压,2014,42(19):73-75.(Liu Hua-lin,Chen Shou-qiang.Passivation method and experimental study of carbide blade edge[J].Hydromechatronics Engineering,2014,42(19):73-75.)
[4]蔡晓,王帅,辛开开.YT15硬质合金刀片刃口电化学钝化实验研究[J].工具技术,2015,49(5):29-31.(Cai Xiao,Wang Shuai,Xin Kai-kai.Experimental research on electrochemical passivation on YT15 carbide blade edge[J].Tool Engineering,2015,49(5):29-31.)
[5]朱晓辉,李淑娟,韩晓君.刃口钝化对丝锥切削性能影响的研究[J].制造技术与机床,2014(5):104-106.(Zhu Xiao-hui,Li Shu-juan,Han Xiao-jun.The study of effects on tapping process of passivated taps[J].Manufacturing Technology and Machine Tools,2014(5):104-106.)
[6]G.R.Johnson,W.H.Cook.A constitutive model and data for metals subjected to large strains,high strain rates and high temperature[J].In:Proceedings of the Seventh International Symposium on Ballistics,The Netherlands,1983:541-547.