用AdvantEdge分析蠕墨铸铁切削时高压切削液的冷却润滑机理  

Analysis on cooling and lubrication mechanism of high-pressure cutting fluid for vermicular cast iron cutting based on AdvantEdge

作　　者：肖晓东 苏国胜[1] 冯利民 衣明东[1] XIAO Xiaodong;SU Guosheng;FENG Limin;YI Mingdong(Shandong Academy of Sciences), Jinan 250353, China)

机构地区：[1]齐鲁工业大学(山东省科学院)机械与汽车工程学院,济南250353

出　　处：《金刚石与磨料磨具工程》2019年第2期76-82,共7页Diamond & Abrasives Engineering

基　　金：山东省重点研发计划项目(2018GGX103023);国家自然科学基金项目(51675289)

摘　　要：使用AdvantEdge软件对不同切削液压力下车削蠕墨铸铁的过程进行二维仿真,研究切削过程中切屑变形、切削温度、刀–屑摩擦及切削力的变化规律,分析高压切削液的冷却润滑机理。仿真结果表明:增大切削液压力可以减小黏结摩擦区和滑动摩擦区长度,加快切削液与工件之间的热量传递速率;同时,高压切削液能够克服莱顿弗罗斯特效应形成的气体保护层,更好地对流换热和冷却;但切削液压力并非越大越好,在15～18 MPa时可以在减少能耗的同时获得较好的冷却润滑效果。Based on the cutting fluid simulation function of AdvantEdge, 2D turning simulation is carried out for vermicular cast iron under different cutting fluid pressures. The variation of chip deformation, cutting temperature, tool-chip friction and cutting force in the cutting process ae studied. The cooling and lubrication mechanism of high-pressure cutting fluid are also analyzed. The simulation results show that the increase of cutting fluid pressure can reduce the lengths of the sticking zone and the sliding friction zone, thereby increasing the heat exchange rate between workpiece and fluid. At the same time, the high-pressure cutting fluid can overcome the gas protective layer formed by the Leidenfrost effect, achieving better heat convection and cooling. However, the increased pressure does not lead to better cooling effect and the cutting fluid pressure should be 15 to 18 MPa for good cooling and lubrication at low energy cost.

关 键 词：AdvantEdge 蠕墨铸铁 高压切削液 冷却润滑机理 

分 类 号：TH16[机械工程—机械制造及自动化] TH117