硬质合金圆盘刀磨损及刃磨过程研究  

Research on the wear and regrinding process of carbide alloy disc cutter

作　　者：高志浩 路家斌[1] 阎秋生[1] 谢昭派 李忠荣 

机构地区：[1]广东工业大学机电工程学院,广州510006 [2]广州日宝钢材制品有限公司,广州511495

出　　处：《塑性工程学报》2016年第5期202-208,共7页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51175090和51575112);广东省科技计划项目(2013B090600039)

摘　　要：采用硬质合金圆盘刀对电磁钢板进行了圆盘剪分切试验,利用光学显微镜和轮廓仪等仪器检测分析了不同分切长度时圆盘刀的磨损过程及其对电磁钢板分切断面毛刺的影响,在此基础上使用万能外圆磨床对硬质合金圆盘刀进行了重新刃磨试验,研究了不同刃磨磨削量时的圆盘刀刃口质量,以探讨圆盘刀磨损过程与刃磨过程的关系。结果表明,随着分切长度的增加圆盘刀的磨损加剧,刃口半径逐渐增大,侧面磨损带高度也随之增加;圆盘刀磨损直接影响分切板材毛刺高度,当分切长度达到3 800m时,圆盘刀侧面磨损达20μm,刃角半径达33μm,而板材毛刺高度达12μm,此时需要装置去除毛刺才能符合分切质量要求。硬质合金圆盘刀刃磨过程是磨损过程的逆过程,随着磨削量的增大,圆盘刀刃口半径减小、侧面磨损带高度降低,但刃磨后的圆盘刀刃口半径在达到约15μm后保持稳定,不会进一步减小,刀具质量无法继续提升。The disc slitting experiments for the electromagnetic steel sheet were conducted to investigate the wear process of carbide alloy disc cutter and its effect on the slitting burr of sheet in the disc slitting process,and the wear of the disc cutter and the burr of electromagnetic steel sheet were examined by the optical microscopy and surface profiler.Then the worn disc cutter was regrinded on the universal grinding machine to investigate the grinding quality of the disc cutter in order to get the relationship between the wear process and the reginding process of the disc cutter.The results show that the wear of the disc cutter increases with the increase of the slitting length,the radius of the cutting edge and the height of the side wear zone also increase.The wear of disc cutter directly affects the slitting burr height of electromagnetic steel sheet.When the slitting length reaches 3800 m,the height of the side wear zone reaches 20μm,the edge radius reaches 33μm,and the burrs height is 12μm,but the burr must be removed by using the burr removal device to meet the requirement of slitting quality.The regrinding process of carbide alloy disc cutter is the inverse of the wear process,the cutting edge radius of the disc cutter and the height of the side wear zone decrease with the increase of the grinding quantity,but the radius of the cutting edge of the blade is stable after reaching 15μm,and the blade quality cannot continue to improve.

关 键 词：硬质合金圆盘刀 圆盘剪分切 磨损 刃磨 毛刺 

分 类 号：TH133[机械工程—机械制造及自动化] TP183[自动化与计算机技术—控制理论与控制工程]