可控倒锥角微孔磨料流加工成形研究
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摘要
运用fluent软件对微孔近壁面处的磨粒相对壁面的压强和速度进行分析计算,求得在微孔壁面处沿轴线方向的速度和压强,在轴向方向上微孔壁面处的速度变化不大,而在轴向方向上微孔壁面处的压强呈逐级递减的趋势,通过切削经验公式Preston方程计算得到磨粒在不同时间下对微孔长度方向上的材料去除量,与相同实验参数下的加工成形的倒锥角微孔进行对比,仿真结果与实际加工中的微孔的倒锥角相吻合。从而实现控制加工时间来实现不同微孔倒锥形角度的加工成形研究。
Though the software Fluent,the pressure and velocity against the micropore wall of grains is calculated and analysed.The velocity and pressure along the axial direction of the micro hole wall are obtained,and the velocity of the micro wall in the axial direction has little change,and the pressure on the micro hole wall in the axial direction shows a trend of decreasing step by step. The material removal of the grains in the radial direction at different times is calculated though cutting Preston equation.The reversed core angle in the simulation result is consistent with the actual experiment at the same forming parameters.The approach is achieved by studying on core angle forming of different micropore though controlling processing time.
Though the software Fluent,the pressure and velocity against the micropore wall of grains is calculated and analysed.The velocity and pressure along the axial direction of the micro hole wall are obtained,and the velocity of the micro wall in the axial direction has little change,and the pressure on the micro hole wall in the axial direction shows a trend of decreasing step by step. The material removal of the grains in the radial direction at different times is calculated though cutting Preston equation.The reversed core angle in the simulation result is consistent with the actual experiment at the same forming parameters.The approach is achieved by studying on core angle forming of different micropore though controlling processing time.
引文
[1]唐维平,宋伟,喻鸣显.喷油嘴喷孔液体挤压研磨工艺研究[J].现代车用动力,2003(2):30-34.(Tang Wei-ping,Song Wei,Yu Ming-xian.Research on grinding process of liquid extrusion for injection nozzle[J].Modern Vehicle Power,2003(2):30-34.)
[2]宋桂珍,程建明,李元宗.磨料流加工技术在热流道模具制造中的应用[J].模具制造,2009,9(2):91-93.(Song Gui-zhen,Cheng Jian-ming,Li Yuan-zong.Application of abrasive flow processing technology in the manufacture of hot runner mold[J].Mold Manufacturing,2009,9(2):91-93.)
[3]计时鸣,李琛,谭大鹏.基于Preston方程的软性磨粒流加工特性[J].机械工程学报,2011,47(17):156-163.(Ji Shi-ming,Li Chen,Tan Da-peng.The processing characteristics of soft abrasive flow based on Preston equation[J].Journal of Mechanical Engineering,2011,47(17):156-163.)
[4]赵培锋,轧刚.基于有限元方法的磨料流加工数值模拟研究[D].太原:太原理工大学,2011.(Zhao Pei-feng,Ya Gang.Numerical simulation of abrasive flow machining based on finite element method[D].Taiyuan:Taiyuan University of Technology,2011)
[5]彭家强,宋丹路,宗营营.磨料水射流对金属材料去除力和去除模型的研究[J].机械设计与制造,2012(2):17-19.(Peng Jia-qiang,Song Dan-lu,Zong Ying-ying.Research on the mechanical design and manufacture of metal materials by abrasive water jet in the removal of metal materials and removal model[J].Mechanical Design and Manufacture,2012(2):17-19.)
[6]丁金福,刘润之,张克华.磨粒流精密光整加工的微切削机理[J].光学精密工程,2014,22(12):3324-3331.(Ding Jin-fu,Liu Run-zhi,Zhang Ke-hua.Micro cutting mechanism of abrasive flow precision finishing machining[J].Optical and Precision Engineering,2014,22(12):3324-3331.)
[7]Jain R K,Jain V K,Kalra P K.Modelling of abrasive flow machining process:a neural network approach[J].Wear,1999,231(2):242-248.
[8]董志国,轧刚,李元宗.高粘弹性流体磨料光整加工的材料去除率模型[J].兵工学报,2013,34(12):1555-1561.(Dong Zhi-guo,Ya Gang,Li Yuan-zong.Highly viscoelastic fluid abrasive finishing material removal rate model[J].Acta ARMAMENTARII,2013,34(12):1555-1561.)
[2]宋桂珍,程建明,李元宗.磨料流加工技术在热流道模具制造中的应用[J].模具制造,2009,9(2):91-93.(Song Gui-zhen,Cheng Jian-ming,Li Yuan-zong.Application of abrasive flow processing technology in the manufacture of hot runner mold[J].Mold Manufacturing,2009,9(2):91-93.)
[3]计时鸣,李琛,谭大鹏.基于Preston方程的软性磨粒流加工特性[J].机械工程学报,2011,47(17):156-163.(Ji Shi-ming,Li Chen,Tan Da-peng.The processing characteristics of soft abrasive flow based on Preston equation[J].Journal of Mechanical Engineering,2011,47(17):156-163.)
[4]赵培锋,轧刚.基于有限元方法的磨料流加工数值模拟研究[D].太原:太原理工大学,2011.(Zhao Pei-feng,Ya Gang.Numerical simulation of abrasive flow machining based on finite element method[D].Taiyuan:Taiyuan University of Technology,2011)
[5]彭家强,宋丹路,宗营营.磨料水射流对金属材料去除力和去除模型的研究[J].机械设计与制造,2012(2):17-19.(Peng Jia-qiang,Song Dan-lu,Zong Ying-ying.Research on the mechanical design and manufacture of metal materials by abrasive water jet in the removal of metal materials and removal model[J].Mechanical Design and Manufacture,2012(2):17-19.)
[6]丁金福,刘润之,张克华.磨粒流精密光整加工的微切削机理[J].光学精密工程,2014,22(12):3324-3331.(Ding Jin-fu,Liu Run-zhi,Zhang Ke-hua.Micro cutting mechanism of abrasive flow precision finishing machining[J].Optical and Precision Engineering,2014,22(12):3324-3331.)
[7]Jain R K,Jain V K,Kalra P K.Modelling of abrasive flow machining process:a neural network approach[J].Wear,1999,231(2):242-248.
[8]董志国,轧刚,李元宗.高粘弹性流体磨料光整加工的材料去除率模型[J].兵工学报,2013,34(12):1555-1561.(Dong Zhi-guo,Ya Gang,Li Yuan-zong.Highly viscoelastic fluid abrasive finishing material removal rate model[J].Acta ARMAMENTARII,2013,34(12):1555-1561.)