硬旋铣PCBN刀具刃口钝化试验研究  

Experimental Study on Cutting Edge Preparation of Hard Whirling PCBN Tool

作　　者：陆斌 陈润泽 宋树权[2] LU Bin;CHEN Run-ze;SONG Shu-quan(School of Mechanical Engineering,Jiangsu University,Jiangsu Zhenjiang 212023,China;School of Mechanical Excellence,Yancheng Institute of Technology,Jiangsu Yancheng 224051,China)

机构地区：[1]江苏大学机械工程学院,江苏镇江212023 [2]盐城工学院机械优集学院,江苏盐城224051

出　　处：《机械设计与制造》2020年第12期100-102,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金(51605414);江苏省研究生实践创新计划(SJCX18_0883)。

摘　　要：刀具刃口非均匀钝化是解决硬旋铣PCBN刀具早期局部破损的有效方法,但由于目前对刀具刃口钝化时的材料非均匀去除规律缺乏深入了解,使得刀具刃口的非均匀局部精准钝化难以实现。为研究刀具刃口钝化时的材料去除规律,利用四轴研磨机对刀具刃口进行钝化试验,基于正交试验方法,研究钝化速度、钝化时间、磨粒粒度等参数对刀具刃口材料去除的作用规律,进而建立了刀具刃口材料去除的经验模型,利用方差分析法验证模型的有效性,并分析刀具刃口钝化参数对表面粗糙度的影响。结果表明,钝化时间对于材料去除的影响较大,钝化速度影响次之,磨粒粒度对材料去除影响最小。当钝化速度为150r/min、钝化时间为20min、磨粒粒度为15μm时,可以获得较理想的PCBN刀具刃口表面粗糙度。Non-uniform passivation of the cutting edge of the tool is an effective method to solve the early partial damage of the hard whirling PCBN tool.However,due to the lack of in-depth understanding of the non-uniform removal of the material during the passivation of the cutting edge,so it is difficult to achieve the non-uniform local precision of the cutting edge of the tool Passivation.In order to study the material removal way when the cutting edge is passivating,it uses a four-axis grinding machine to passivate the cutting edge of the tool.Based on the orthogonal test,study the way of passivation speed,passivation time and abrasive grain size on the removal of the cutting edge material,and establish the empirical model of tool cutting removal material.The validity of the model is verified by the variance analysis method,and analyze the influence of the cutting edge passivation parameters on the surface roughness.The results show that the passivation time has a great influence on the removal of the blunt material,and the passivation speed is the second.The grain size has the least influence on the removal of the blunt material.When the passivation speed is 150 r/min,the passivation time is 20 min,and the abrasive grain size is 15μm,obtain the ideal surface quality of the PCBN tool edge.

关 键 词：PCBN刀具 钝化参数 正交试验 表面粗糙度 

分 类 号：TG506[金属学及工艺—金属切削加工及机床] TH16[机械工程—机械制造及自动化]