基于单颗磨粒的高速外圆磨削成屑机理研究  

Research of chip formation theory in high-speed cylindrical grinding withsingle grit

作　　者：周振新[1] 李蓓智[1] 杨建国[1] 朱大虎[1] 

机构地区：[1]东华大学机械工程学院,上海201620

出　　处：《机械设计与制造》2011年第7期138-140,共3页Machinery Design & Manufacture

基　　金：国家973计划项目资助(2009CB724403);上海市重点学科建设项目资助(B602)

摘　　要：高速磨削是解决磨削效率和磨削质量完美统一的一种可能途径,但对于高速外圆磨削机理的研究并不多见。基于切削仿真软件,构造了单颗磨粒高速外圆磨削仿真模型,对高速外圆磨削机理进行了仿真试验研究,研究结果表明:钛合金在单颗磨粒高速磨削作用下经历了滑擦→耕犁→成屑→滑擦4种状态变化;工件在磨屑形成之前,力与温度均呈上升趋势,随着工件温度的升高,磨削力出现拐点并急剧下降,成屑过程中磨削温度达到最高值时,磨削力降至最小值。One possible method to solve the problem of unifying grinding efficiency and quality is high-speed grinding,however,the research on high-speed cylindrical grinding is rare.Based on cutting simulation software,a model for simulating high-speed cylindrical grinding of single grid is built,in which mechanism of high-speed cylindrical grinding is researched by simulation.The results show that： with the influence of high-speed grinding of single grit,four states of titanium alloy shall experience are： sliding→plowing→chip forming→sliding.Both force and temperature are on the rise before chip formation.And with the increase of temperature,the grinding force appears a turning point and declines sharply.In the process of chip formation the grinding force shall decline to the minimum with grinding temperature reaching to maximum.

关 键 词：高速外圆磨削 单颗磨粒 成屑过程 热力耦合 

分 类 号：TH16[机械工程—机械制造及自动化] TG580.11[金属学及工艺—金属切削加工及机床]