基于Simufact多道次变薄拉深筒形件尺寸精度研究
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摘要
为了探究多道次变薄拉深冷成形加工工艺参数与筒形件尺寸精度之间的关系,采用Simufact. forming有限元仿真软件,选取C15-c低碳钢为试验材料进行多道次变薄拉深冷成形模拟试验,采用正交试验设计方案,探究了多道次变薄拉深冷成形过程中工艺参数(减薄率、凹模锥角与摩擦系数)对筒形件尺寸精度(内径扩径量、外圆度误差与壁厚偏差)的影响规律,并进行了试验验证。结果表明:在C15-c低碳钢材料筒形件的多道次变薄拉深冷成形工艺中,当减薄率为40%、凹模锥角为12°、摩擦系数为0. 10时,筒形件的尺寸精度较高。加工工艺参数对内径扩径量的影响顺序为:减薄率>凹模锥角>摩擦系数;对外圆度误差的影响顺序为:摩擦系数>凹模锥角>减薄率;对壁厚偏差的影响顺序为:减薄率>凹模锥角>摩擦系数。
To explore the relationship between the process parameters of multi-step ironing cold forming and the dimension accuracy of the cylindrical parts,the Simufact. forming finite element simulation software was employed to simulate the multi-step ironing cold forming of C15-c low-carbon steel. Based on the orthogonal experimental design,the influence of the processing parameters including thinning ratio,die angle and friction coefficient on the dimensional accuracy of the cylindrical parts was investigated in terms of inner diameter enlargement,outer roundness error and wall thickness deviation,which was verified by the experiments. The results show that in the multi-step ironing cold forming process of the C15-c low-carbon steel cylindrical parts,the process parameter combination with the thinning rate of40%,the die angle of 12°and the friction coefficient of 0. 10 yields higher dimension accuracy. The significance order of the influence of the process parameters on inner diameter enlargement is thinning ratio > die angle > friction coefficient; the significance order of the influence on outer roundness error is friction coefficient > die angle > thinning ratio; and the significance order of the influence on wall thickness deviation is thinning ratio > die angle > friction coefficient.
To explore the relationship between the process parameters of multi-step ironing cold forming and the dimension accuracy of the cylindrical parts,the Simufact. forming finite element simulation software was employed to simulate the multi-step ironing cold forming of C15-c low-carbon steel. Based on the orthogonal experimental design,the influence of the processing parameters including thinning ratio,die angle and friction coefficient on the dimensional accuracy of the cylindrical parts was investigated in terms of inner diameter enlargement,outer roundness error and wall thickness deviation,which was verified by the experiments. The results show that in the multi-step ironing cold forming process of the C15-c low-carbon steel cylindrical parts,the process parameter combination with the thinning rate of40%,the die angle of 12°and the friction coefficient of 0. 10 yields higher dimension accuracy. The significance order of the influence of the process parameters on inner diameter enlargement is thinning ratio > die angle > friction coefficient; the significance order of the influence on outer roundness error is friction coefficient > die angle > thinning ratio; and the significance order of the influence on wall thickness deviation is thinning ratio > die angle > friction coefficient.
引文
[1]许江平,柳玉起,章志兵,等.变薄拉深过程模拟的有限元动力显式算法[J].锻压技术,2008,33(5); 38-43.XU Jiangping,LIU Yuqi,ZHANG Zhibing,et al. Finite element dynamic explicit method in ironing process simulation[J]. Forging&Stamping Technology,2008,33(5):38-43.
[2]张向伟,黄丽丽.深杯形件多道次变薄拉深过程数值模拟[J].热加工工艺,2013,42(13):112-114.ZHANG Xiangwei,HUANG Lili. Numerical simulation of multistep ironing process for deep cup shaped workpiece[J]. Hot Working Technology,2013,42(13):112-114.
[3]王俊彪,贾建军.多道次变薄拉深的模拟与优化设计[J].西北工业大学学报,1997,15(3):348-354.WANG Junbiao,JIA Jianjun. The simulation and optimization multi-step ironing process[J]. Journal of Northwestern Polytechnic University,1997,15(3):348-354.
[4]白建雄,陈先朝,肖小亭,等. 304不锈钢壳级进模变薄拉深工艺及数值模拟[J].锻压技术,2015,40(1):33-38.BAI Jianxiong,CHEN Xianchao,XIAO Xiaoting,et al. Ironing process and numerical simulation of progressive die for stainless steel 304 shell[J]. Forging&Stamping Technology,2015,40(1):33-38.
[5] SINGH S K,GUPTA A K,MAHESH K. A study on the extent of ironing of EDD steel at elevated temperature[J]. CIRP Journal of Manufacturing Science and Technology,2010,3(1):73-79.
[6] ADAMOVIC D,MANDIC V,JURKOVIC Z,et al. An experimental modelling and numerical FE analysis of steel-strip ironing process[J]. Tehnicki Vjesnik,2010,17(4):435-444.
[7]肖善超.弹壳多模一次连续变薄拉深工艺研究[D].秦皇岛:燕山大学,2012.XIAO Shanchao. Research on multi-mode-one-off ironing process for cartridge case[D]. Qinhuangdao:Yanshan University,2012.
[8]吴向红,赵国群,孙胜,等.挤压速度与摩擦状态对铝型材挤压过程的影响[J].塑性工程学报,2007,14(1):36-41.WU Xianghong,ZHAO Guoqun,SUN Sheng,et al. The influence of extrusion speed and frictional status on aluminum profile extrusion processes[J]. Journal of Plasticity Engineering,2007,14(1):36-41.
[9]葛丹丹.连杆衬套强力旋压有限元数值模拟及工艺参数研究[D].太原:中北大学,2012.GE Dandan. Research on FEM numerical simulation of power spinning of rod bushing and process parameters[D]. Taiyuan:North University of China,2012.
[10]辛喜玲,许晓静,田琨,等.不同润滑介质下钢-钢摩擦副的摩擦磨损性能[J].机械设计与制造,2012,(3):213-215.XIN Xiling,XU Xiaojing,TIAN Kun,et al. Friction and wear behaviors of steels-steels fiction pairs under different lubricating conditions[J]. Machinery Design&Manufacture,2012,(3):213-215.
[11]平欣,平鹏.圆度,同轴度和圆柱度误差的最小二乘评定法[J].中国测试,1997,(2):44-46.PING Xin,PING Peng. The least square estimation of roundness,coaxial and cylindrical errors[J]. The Chinese Test, 1997,(2):44-46.
[2]张向伟,黄丽丽.深杯形件多道次变薄拉深过程数值模拟[J].热加工工艺,2013,42(13):112-114.ZHANG Xiangwei,HUANG Lili. Numerical simulation of multistep ironing process for deep cup shaped workpiece[J]. Hot Working Technology,2013,42(13):112-114.
[3]王俊彪,贾建军.多道次变薄拉深的模拟与优化设计[J].西北工业大学学报,1997,15(3):348-354.WANG Junbiao,JIA Jianjun. The simulation and optimization multi-step ironing process[J]. Journal of Northwestern Polytechnic University,1997,15(3):348-354.
[4]白建雄,陈先朝,肖小亭,等. 304不锈钢壳级进模变薄拉深工艺及数值模拟[J].锻压技术,2015,40(1):33-38.BAI Jianxiong,CHEN Xianchao,XIAO Xiaoting,et al. Ironing process and numerical simulation of progressive die for stainless steel 304 shell[J]. Forging&Stamping Technology,2015,40(1):33-38.
[5] SINGH S K,GUPTA A K,MAHESH K. A study on the extent of ironing of EDD steel at elevated temperature[J]. CIRP Journal of Manufacturing Science and Technology,2010,3(1):73-79.
[6] ADAMOVIC D,MANDIC V,JURKOVIC Z,et al. An experimental modelling and numerical FE analysis of steel-strip ironing process[J]. Tehnicki Vjesnik,2010,17(4):435-444.
[7]肖善超.弹壳多模一次连续变薄拉深工艺研究[D].秦皇岛:燕山大学,2012.XIAO Shanchao. Research on multi-mode-one-off ironing process for cartridge case[D]. Qinhuangdao:Yanshan University,2012.
[8]吴向红,赵国群,孙胜,等.挤压速度与摩擦状态对铝型材挤压过程的影响[J].塑性工程学报,2007,14(1):36-41.WU Xianghong,ZHAO Guoqun,SUN Sheng,et al. The influence of extrusion speed and frictional status on aluminum profile extrusion processes[J]. Journal of Plasticity Engineering,2007,14(1):36-41.
[9]葛丹丹.连杆衬套强力旋压有限元数值模拟及工艺参数研究[D].太原:中北大学,2012.GE Dandan. Research on FEM numerical simulation of power spinning of rod bushing and process parameters[D]. Taiyuan:North University of China,2012.
[10]辛喜玲,许晓静,田琨,等.不同润滑介质下钢-钢摩擦副的摩擦磨损性能[J].机械设计与制造,2012,(3):213-215.XIN Xiling,XU Xiaojing,TIAN Kun,et al. Friction and wear behaviors of steels-steels fiction pairs under different lubricating conditions[J]. Machinery Design&Manufacture,2012,(3):213-215.
[11]平欣,平鹏.圆度,同轴度和圆柱度误差的最小二乘评定法[J].中国测试,1997,(2):44-46.PING Xin,PING Peng. The least square estimation of roundness,coaxial and cylindrical errors[J]. The Chinese Test, 1997,(2):44-46.