双磁盘磁力钝化机制及实验研究  

Magnetic Passivation Mechanism and Experimental Research of Double Disk

作　　者：赵雪峰[1] 秦浩 杨勇[1] 李辉 ZHAO Xue-feng;QIN Hao;YANG Yong;LI Hui(School of Mechanical Engineering Guizhou University,Guizhou Guiyang 550025,China)

机构地区：[1]贵州大学机械工程学院,贵州贵阳550025

出　　处：《机械设计与制造》2024年第6期140-143,149,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(52065012);贵州省高层次创新型人才项目(“千层次”)([2018]190)。

摘　　要：对刀具刃口进行钝化可以显著的提高刀具寿命,为了探究磁力钝化技术对刀具刃口的影响。首先,设计并搭建了双磁盘磁力钝化设备,分析了双磁盘磁力钝化的基本原理及单元磨粒的受力;然后,通过对陶瓷、PCD金刚石以及硬质合金刀具进行磁力钝化实验,并基于B样条曲线对刃口进行表征,通过刃口的磨损量探究了不同刀具材料对磁力钝化的影响;最后,通过设置正交试验,采用响应面法和极差法分析了磁盘转速、刀具转速、磁盘间距、钝化时间对硬质合金刀具在双磁盘磁力钝化中的影响规律。实验发现,材料的相对磁导率对钝化磨损量的影响较大,磁盘转速与刀具转速并非线性关系,钝化磨损量随钝化时间呈递增关系,且最优组合为:磁盘转速200r/min、刀具转速45r/min、磁盘间距为15mm、钝化时间为12min。Passivating the cutting edge of the tool can significantly improve the tool life,in order to explore the influence of mag-netic passivation technology on the cutting edge of the tool.First,design and build a dual-disk magnetic passivation equipment,analyze the basic principle of dual-disk magnetic passivation and the force of unit abrasive grains;Then,through magnetic pas-sivation experiments on ceramic,PCD diamond and cemented carbide tools,The cutting edge is characterized based on the B-spline curve,and the influence of different tool materials on the magnetic passivation is explored through the wear of the cutting edge.Finally,through the orthogonal experiment,the response surface method and the range method are used to analyze the disk rotation speed.Tool speed,disk spacing,passivation time on the influence of cemented carbide tools in dual-disk magnetic passivation.Experiments have found that the relative permeability of the material has a greater impact on the amount of passiv-ation wear.The disk rotation speed is not linearly related to the tool rotation speed.The passivation wear amount increases with the passivation time,and the optimal combination is:disk rotation speed 200r/min,the cutter speed is 45r/min,the disk spacing is 15mm,and the passivation time is 12min.

关 键 词：双磁盘 刀具钝化 磁盘间距 

分 类 号：TH16[机械工程—机械制造及自动化] TP391[自动化与计算机技术—计算机应用技术]