磨削温度场建模及热传递分析与实验验证  

Grinding temperature field modeling with heat transfer analysis and experimental verification

作　　者：张东坤[1] 李长河[1] 贾东洲[1] 张彦彬[1] 

机构地区：[1]青岛理工大学机械工程学院,山东青岛266033

出　　处：《制造技术与机床》2015年第4期82-87,共6页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金(51175276)

摘　　要：以磨削原理为基础,分别建立了干磨削、湿磨削和纳米粒子射流微量润滑磨削的温度场理论模型,分别对各种冷却条件下的温度场进行热量的传递分析。借鉴强化换热理论,分析了纳米粒子射流的导热特性,并对纳米粒子射流微量润滑磨削温度场能量的分配进行分析,理论推导出由砂轮/工件界面传入工件的能量比例系数及工件平均表面温度,用4种冷却方式进行磨削实验,分别通过红外热像仪和测力仪测得工件的表面温度和切向磨削力,并计算出传入工件的能量比例系数,证实浇注式磨削能量比例系数最低,其次为纳米粒子射流微量润滑磨削,分别为40.06%和46.47%。Based on the principle of grinding,respectively establishes dry grinding,wet grinding and nanoparticles jet minimal quantities of lubricant( MQL) grinding temperature field model,analyzes heat transfer in temperature field under the various cooling condition。 References heat transfer theory,analyzes the thermal conductivity of nanoparticle jet,and the distribution of the energy in nanoparticles grinding temperature field,theoretically derives energy partition coefficient from the interface of grinding wheel /workpiece into the surface temperature of workpiece,then calculates the average surface temperature of workpieces,conducts the grinding experiments in four cooling ways,measures the surface temperature of the workpiece and the tangential grinding force by the infrared thermal imager and dynamometer,then verifies that the energy partition coefficient in flood is the lowest,the Nano MQL grinding is in the second place,respectively is 40. 06% and 46. 47%.

关 键 词：磨削 磨削温度 能量比例系数 纳米粒子射流 

分 类 号：TG580.6[金属学及工艺—金属切削加工及机床]