切削刀具刃口钝化复合结构优化设计  

Optimizing Design of Cutting Tool Edge Honing Structure

作　　者：杨勇[1,2] 郭玉文[1] 

机构地区：[1]中国环境科学研究院清洁生产与循环经济研究中心,北京100012 [2]青岛理工大学机械工程学院,山东青岛266520

出　　处：《机械设计与制造》2018年第2期81-84,共4页Machinery Design & Manufacture

基　　金：中国博士后科学基金资助(2014M550783)

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.

关 键 词：切削刀具 刃口钝化 有限元仿真 结构 

分 类 号：TH16[机械工程—机械制造及自动化]