锻压技术

伺服液压机的行程曲线对拉深成形过程的影响

英文标题：Influence of stroke curves on deep drawing process based on servo-hydraulic machine

作者：华路延夏琴香阮卫平方铭

分类号：TG386

出版年,卷(期):页码：2016,41(8):93-98

摘要：

伺服液压机可实现无级调速，在此基础上实现的行程曲线可以提高材料拉深极限，因而单次拉深深度更高，成形件拉深系数更小。通过分析计算设计了恒速、加速度为正和加速度为负的阶梯速度行程曲线，并应用Dynaform有限元分析软件对3种不同行程曲线情况下的拉深过程进行了数值模拟，同时进行了拉深试验验证，成功将某不锈钢直身煲实际生产的两道次拉深减少至一道次拉深，极大地提高了生产效率。研究结果表明，在相同的拉深工艺条件下，通过加速度为正的阶梯速度行程曲线所获得的工件拉深质量最好。

Based on the stepless speed of the servo-hydraulic machine, the drawing limit of the material can be improved by adapting appropriate stroke curve, thus a deeper drawn part can be realized with a smaller drawing coefficient. Gradient stroke curves with a constant speed, a positive accelerated speed and a negative accelerated speed were designed respectively based on theoretical analysis and calculation, and the deep drawing process was carried out by Dynaform. Therefore, the production efficiency was improved greatly by reducing drawing times from twice to once for a stainless steel straight body pot. The results show that under the same drawing conditions, the best quality of the workpiece can be obtained with a positive accelerated speed of gradient stroke curves.

基金项目：

顺德区产学研合作项目（2012CXY01）

华路延（1991-），男，硕士研究生夏琴香(1964-)，女，博士，教授

参考文献：

［1］严建，刘家旭，陈汝昌，等. 智能液压机研究现状及关键技术[J] . 锻压装备与技术，2013，48(2)：15-17.Yang J, Liu J X, Chen R C, et al. Intelligent hydraulic research status and key technology[J]. China Metalforming Equipment & Manufacturing Technology, 2013, 48(2): 15-17.
［2］喻建军. 基于伺服压力机冲压速度对板料成形性的影响[D]. 合肥: 合肥工业大学，2013.Yu J J.Based on Punching Speed Servo Press Formability of the Material on Board[D]. Hefei: Hefei University of Technology, 2013.
［3］朱正才. 拉深件起皱和破裂起因探讨[J] . 机械研究与应用，2008，21(3): 40-42.Zhu Z C. Stretching pieces explore the causes of wrinkling and rupture[J]. Mechanical Research & Application, 2008，21(3): 40-42.
［4］李贵闪，严建文，翟华，等. 伺服液压机研究现状及关键技术[J].液压与气动，2011，5(1): 39-41.Li G S, Yan J W, Zhai H. Situation hydraulic servo and key technology research [J]. Hydraulic and Pneumatic,2011,5(1): 39-41.
［5］夏卫明，李辉，骆桂林，等. 125 t混合伺服液压机的特点、技术方案及应用[J]. 锻压技术，2014，39(9):74-85.Xia W M, Li H, Luo G L，et al. Features 125 t hybrid servo-hydraulic machines, technical solutions and applications[J].Forging & Stamping Technology, 2014,39(9):74-85.
［6］夏琴香，袁宁. 模具设计及计算机应用[M]. 广州: 华南理工大学出版社，2008.Xia Q X, Yuan N. Mould Design and Computer Applications[M]. Guangzhou: South China University of Technology Press，2008.
［7］张方阳. 伺服拉深工艺曲线规划试验[J]. 华南理工大学学报，2014，42(7)：91-96.Zhang F Y. Servo curve drawing process planning test[J]. South China University of Technology Education,2014,42(7)：91-96.
［8］付秀娟. 变速、变载条件下板料冲压成形性能及其变形机理研究[D]. 武汉：华中科技大学，2012.Fu X J. Properties and Deformation Mechanism of Gear, Variable Load Condition Sheet Metal Forming[D].Wuhan: Huazhong University of Science and Technology，2012.
［9］夏琴香，魏光明，叶福源，等. 多工位级进冲压全工序数值模拟关键技术研究[J]. 华南理工大学学报，2012，40(7)：62-66.Xia Q X,Wei G M, Ye F Y,et al. Investigation into key technologies of numerical simulation of whole process chain during multi-position progressive stamping[J]. Journal of South China University of Technology, 2012，40(7)：62-66.
［10］熊盛勇，夏琴香，陈亚兵，等. 基于数值模拟的空调换热器翅片多道次级进拉深成形过程研究[J].锻压技术，2015，40(1):27-32.Xiong S Y, Xia Q X, Cheng Y B, et al. Influence of stroke curves on the deep drawing process based on servo-hydraulic machine [J]. Forging & Stamping Technology, 2015,40(1):27-32.
［11］陈文亮. 坯料成形CAE分析教程[M]. 北京：机械工业出版社，2005.Chen W L. CAE Analysis Tutorial of Blank Forming[M]. Beijing: China Machine Press, 2005.

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