外圆磨削强化技术及其磨削力的研究  

Research on the external grind-hardening and Its grinding force

作　　者：杨刚[1] 杜长龙[2] 韩正铜[2] 

机构地区：[1]中国矿业大学应用技术学院,徐州221008 [2]中国矿业大学机电工程学院,徐州221008

出　　处：《机械设计与制造》2008年第12期88-90,共3页Machinery Design & Manufacture

基　　金：中国矿业大学科技基金项目(2006B009)

摘　　要：提出了外圆磨削方式的磨削强化技术,并在M1432B型磨床上进行了试验。针对参量为磨削深度0.3mm、工件速度0.2m/min的试件强化层进行金相分析与硬度测量,发现组织为马氏体且硬度最高达到754HV(约62.3HRC),验证了其切实的可行性及良好的强化效果。对于外圆磨削强化过程中的磨削力,建立了磨削力模型并提供了使用自制弹性顶尖的测量方法,实测后发现切向力与法向力数值随着磨削深度的增大而增大,在磨削深度0.4mm处分别达到了146N和656N,且法向力的数值与增长速度比切向力高。The grind-hardening method suitable for external grinding is put forward and the experi-ments are carried out on M1432B grinding machine.The hardened layer of workpiece with cut depth 0.3mm and speed 0.2m/min is analyzed.The result indicates the metal structure of hardened layer is martensite and the top hardness value is 754HV（about 62.3 HRC）,so the feasibility and the fine harden-ing effect of the new method are confirmed.At the same time,grinding force as one of the most important factors of external grind-hardening process is modelled,and the method of measuring is provided with elastic core clampers.The measuring result shows the values of both tangential force and normal force in-crease when cut depth raises,and the top value is 146N and 656N at cut depth value of 0.4mm.Further-more,the increment speed and the value of normal force are more than tangential force.

关 键 词：磨削强化 表面淬火 外圆磨削 磨削力 

分 类 号：TH16[机械工程—机械制造及自动化] TG156.33[金属学及工艺—热处理]