压边力对变间隙拉深制耳的影响
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摘要
以圆筒形件为研究对象,运用Abaqus/Explicit的准静态法,分别对直径为Φ80、Φ85和Φ90 mm的DC04钢板变间隙拉深进行仿真,研究了不同压边力作用下圆筒形件变间隙拉深过程中压边力对拉深制耳的影响,得到板料变间隙拉深过程中的压边力-制耳率曲线。仿真结果表明,压边力对变间隙拉深制耳有较大影响,压边力从5 k N增大至10 k N时,制耳率由3. 8%迅速降低为2. 4%,继续增大压边力至15 k N时,制耳率缓慢降低为2. 2%,说明随着压边力的增大,圆筒形件的制耳率先迅速降低再趋于平缓。结合变间隙拉深工艺试验,通过对比拉深工艺试验的制耳率,仿真结果与试验结果吻合较好。
Taking cylinder cup as study case,the influence of blank holder force( BHF) on the drawing earing of DC04 sheet with diameters of Φ80,Φ85 and Φ90 mm in variable gap deep drawing was simulated under different BHF values by the quasistatic method of Abaqus/Explicit. Then,the BHF versus earing rate curve during the variable gap deep drawing was obtained. The simulation results show that BHF has great influence on the drawing earing of variable gap deep drawing. When the blank holder force increases from 5 k N to10 k N,the earing rate decreases rapidly from 3. 8% to 2. 4%,and the earing rate decreases slowly to 2. 2% with the BHF further increases to 15 k N,indicating that with the increase of the BHF,the earing rate of the cylindrical part decreases rapidly first and then flattens out. The simulation results are in good agreement with the experimental results by comparing the earing rate with variable gap drawing process test.
Taking cylinder cup as study case,the influence of blank holder force( BHF) on the drawing earing of DC04 sheet with diameters of Φ80,Φ85 and Φ90 mm in variable gap deep drawing was simulated under different BHF values by the quasistatic method of Abaqus/Explicit. Then,the BHF versus earing rate curve during the variable gap deep drawing was obtained. The simulation results show that BHF has great influence on the drawing earing of variable gap deep drawing. When the blank holder force increases from 5 k N to10 k N,the earing rate decreases rapidly from 3. 8% to 2. 4%,and the earing rate decreases slowly to 2. 2% with the BHF further increases to 15 k N,indicating that with the increase of the BHF,the earing rate of the cylindrical part decreases rapidly first and then flattens out. The simulation results are in good agreement with the experimental results by comparing the earing rate with variable gap drawing process test.
引文
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[11]柯桂颜,路平,石婧,等.拉延筋、压边力对冲压件成形性能的影响研究[J].锻压技术,2016,41(5):39-43.KE Guiyan,LU Ping,SHI Jing,et al. Influences of drawbead and blank holder force on formability of stampings[J]. Forging&Stamping Technology,2016,41(5):39-43.
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[14]鲜小红.基于Dynaform的印涂铝盖冲压拉深模具间隙的数字化设计技术[J].锻压技术,2017,42(1):41-46.XIAN Xiaohong. Digtalized design technology of drawing die clearance for printed and coated aluminum covers based on Dynaform[J]. Forging&Stamping Technology,2017,42(1):41-46.
[15]岳学虎,樊瑜瑾,郑淮和,等.冲裁过程中压边力对成形质量的影响[J].锻压技术,2018,43(4):53-59.YUE Xuehu,FAN Yujin,ZHENG Huaihe,et al. Influence of blank holder force on forming quality during blanking[J]. Forging&Stamping Technology,2018,43(4):53-59.
[16]张浩.圆筒形件多道次拉深制耳的仿真分析与试验研究[D].株洲:湖南工业大学,2016.ZHANG Hao. Simulation analysis and experimental study on multi pass deep drawing ear of cylindrical parts[D]. Zhuzhou:Hunan University of Technology,2016.
[17]胡成武,张浩,王镇柱,等.冷轧深冲板塑性应变比和屈服应力的理论计算及试验验证[J].塑性工程学报,2017,24(2):40-45.HU Chengwu,ZHANG Hao,WANG Zhenzhu,et al. Theoretical calculation and experimental verification of plastic strainratio and yield stress of cold rolled deep drawing sheet[J]. Journal of Plasticity Engineering,2017,24(2):40-45.
[18] GB/T 15835. 7—2008,金属薄板成形性能与试验方法第1部分:成形性能和指标[S].GB/T 15835. 7—2008,Sheet metal forming properties and test methods part 1:Formability and indicators[S].
[19]李硕本.冲压工艺学[M].北京:机械工业出版社,1982.LI Shuoben. Stamping technology[M]. Beijing:China Machine Press,1982.
[2]胡成武,崔双好,李文元,等.变间隙拉深对圆筒形件拉深制耳影响的试验研究[J].塑性工程学报,2016,23(2):75-80.HU Chengwu,CUI Shuanghao,LI Wenyuan,et al. Experiment study on drawing earing of cylindrical cups by variable gap deep drawing[J]. Journal of Plasticity Engineering,2016,23(2):75-80.
[3] HUANG Y M,CHEN J W. Influence of the tool clearance in the cylindrical cup-drawing process[J]. Journal of Materials Processing Technology,1996,57(1):4-13.
[4] YOON J W,BARLAT F,DICK R E,et al. Prediction of six or eight earing in a drawn cup based on a new anisotropic yield function[J]. International Journal of Plasticity,2006,22(1):174-193.
[5] YOON J W,DICK R E,BARLAT F. A new analytical theory for earing generated from anisotropic plasticity[J]. International Journal of Plasticity,2011,27(8):1165-1184.
[6]肖华,石磊,仝广,等.冲压成形凸耳不均匀的产生及影响因素[J].锻压技术,2009,34(3):53-56.XIAO Hua,SHI Lei,TONG Guang,et al. Influencing factors on unequal earing stamping[J]. Forging&Stamping Technology,2009,34(3):53-56.
[7]林谋森.方形零件拉深模的间隙选用[J].机械工人,1984,(9):5-7.LIN Mousen. Selection in the clearance of the square part drawing die[J]. Machinist Metal Forming,1984,(9):5-7.
[8]王镇柱.基于定向配置合理间隙抑制圆筒形件拉深制耳的研究[D].株洲:湖南工业大学,2015.WANG Zhenzhu. Study on inhibition drawing earing of cylindrical cups based on reasonable clearance of directional configuration[D]. Zhuzhou:Hunan University of Technology,2015.
[9]李二玲,邓沛然,杨尚磊,等.薄板拉深过程中压边力与破裂关系的研究[J].锻压技术,2014,39(6):55-59.LI Erling,DENG Peiran,YANG Shanglei,et al. Analysis of blank holder force&fracture during the process of deep drawing for thin sheet[J]. Forging&Stamping Technology, 2014, 39(6):55-59.
[10]樊浩森,胡建华,白雪,等.汽车覆盖件拉深过程中的压边力预测[J].锻压技术,2017,42(7):43-47.FAN Haosen,HU Jianhua,BAI Xue,et al. Prediction on blank holder force of automobile covering parts in deep drawing process[J]. Forging&Stamping Technology,2017,42(7):43-47.
[11]柯桂颜,路平,石婧,等.拉延筋、压边力对冲压件成形性能的影响研究[J].锻压技术,2016,41(5):39-43.KE Guiyan,LU Ping,SHI Jing,et al. Influences of drawbead and blank holder force on formability of stampings[J]. Forging&Stamping Technology,2016,41(5):39-43.
[12] WANG Y G,HUANG G S,LIU D K,et al. Influence of blank holder type on drawability of 5182-O aluminum sheet at room temperature[J]. Transactions of Nonferrous Metals Society of China,2016,26(5):1251-1258.
[13]官英平,马向东,张登谦.拼焊板方盒件拉深成形过程变压边力曲线预测[J].塑性工程学报,2017,24(2):17-21.GUAN Yingping, MA Xiangdong, ZHANG Dengqian. Variable blank holder force curve prediction in deep drawing for square box of tailor-welded blanks[J]. Journal of Plasticity Engineering,2017,24(2):17-21.
[14]鲜小红.基于Dynaform的印涂铝盖冲压拉深模具间隙的数字化设计技术[J].锻压技术,2017,42(1):41-46.XIAN Xiaohong. Digtalized design technology of drawing die clearance for printed and coated aluminum covers based on Dynaform[J]. Forging&Stamping Technology,2017,42(1):41-46.
[15]岳学虎,樊瑜瑾,郑淮和,等.冲裁过程中压边力对成形质量的影响[J].锻压技术,2018,43(4):53-59.YUE Xuehu,FAN Yujin,ZHENG Huaihe,et al. Influence of blank holder force on forming quality during blanking[J]. Forging&Stamping Technology,2018,43(4):53-59.
[16]张浩.圆筒形件多道次拉深制耳的仿真分析与试验研究[D].株洲:湖南工业大学,2016.ZHANG Hao. Simulation analysis and experimental study on multi pass deep drawing ear of cylindrical parts[D]. Zhuzhou:Hunan University of Technology,2016.
[17]胡成武,张浩,王镇柱,等.冷轧深冲板塑性应变比和屈服应力的理论计算及试验验证[J].塑性工程学报,2017,24(2):40-45.HU Chengwu,ZHANG Hao,WANG Zhenzhu,et al. Theoretical calculation and experimental verification of plastic strainratio and yield stress of cold rolled deep drawing sheet[J]. Journal of Plasticity Engineering,2017,24(2):40-45.
[18] GB/T 15835. 7—2008,金属薄板成形性能与试验方法第1部分:成形性能和指标[S].GB/T 15835. 7—2008,Sheet metal forming properties and test methods part 1:Formability and indicators[S].
[19]李硕本.冲压工艺学[M].北京:机械工业出版社,1982.LI Shuoben. Stamping technology[M]. Beijing:China Machine Press,1982.