PCBN高速切削25CrMo4过程的切削温度研究
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摘要
为获得25CrMo4淬火钢的最优切削参数,应用Deform-3D软件建立三维有限元模型并对切削过程进行仿真,获得了不同切削速度、背吃刀量和进给量下切削温度的变化规律,通过对模拟结果评估获得了最佳切削参数。在最佳切削参数下进行切削实验,结果发现:随着切削速度、进给量和切削深度的增加切削温度都呈上升趋势;不同切削速度下的切削温度实验与模拟值非常吻合,这表明在实验切削速度范围内切削温度是优化切削参数的最主要物理量。
In order to obtain the optimum cutting parameters of hardened 25CrMo4 steel,three-dimensional( 3-D) finite element model( FEM) was built with the aid of Deform-3D software and the cutting process was simulated. Variation law of cutting temperature under different cutting speeds,back cutting depths and feeding amount was obtained,and the optimum cutting parameters were obtained through evaluation of the simulation results. Cutting experiments were carried out under the optimal cutting parameters and the experimental results show that the cutting temperature increases along with the increasing of the cutting speed,feeding amount and cutting depth; in addition,the experimental values of cutting temperature agree well with the simulation results under different cutting speed,which indicates that cutting temperature is the most important physical parameter for optimizing the cutting parameters within the range of cutting speed used in the experiment.
In order to obtain the optimum cutting parameters of hardened 25CrMo4 steel,three-dimensional( 3-D) finite element model( FEM) was built with the aid of Deform-3D software and the cutting process was simulated. Variation law of cutting temperature under different cutting speeds,back cutting depths and feeding amount was obtained,and the optimum cutting parameters were obtained through evaluation of the simulation results. Cutting experiments were carried out under the optimal cutting parameters and the experimental results show that the cutting temperature increases along with the increasing of the cutting speed,feeding amount and cutting depth; in addition,the experimental values of cutting temperature agree well with the simulation results under different cutting speed,which indicates that cutting temperature is the most important physical parameter for optimizing the cutting parameters within the range of cutting speed used in the experiment.
引文
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[3]朱学超.淬硬钢SKD11硬态干式切削温度试验研究[J].煤矿机械,2008,29(11):32-34.
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[5]LIU Xianli,WEN Donghui,LI Zhenjia,et al.Cutting Temperature and Tool Wear of Hard Turning Hardened Bearing Steel[J].Journal of Materials Processing Technology,2002,129:200-206.
[6]焦锋,赵勇,李太平.超声硬切削45淬火钢有限元分析[J].工具技术,2009,43(12):65-67.
[7]倪志兵.45钢切削加工温度变化数值模拟分析[J].工具技术,2010,44(11):64-66.
[8]苏华礼,徐铭.激光热处理球墨铸铁轧辊切削机理研究[J].机械设计与制造,2008(6):140-142.
[9]刘战强,艾兴,李甜甜,等.PCBN刀具加工TC4钛合金的切削加工性[J].山东大学学报:工学版,2009,39(1):77-83.
[10]刘鹏,徐九华,傅玉灿.聚晶金刚石刀具高速铣削钛合金切削温度分析[J].哈尔滨工业大学学报,2011,43(11):95-100.
[11]叶贵根,薛世峰,全兴华,等.高速切削TiAl6V4温度和切削力动态变化规律研究[J].工具技术,2011,45(8):21-25.
[12]王秋林,傅建军.热喷涂镍基合金粉末表面的车削加工[J].制造技术与机床,2003(8):40-42.
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