锻压技术

管端精密快速成形模具仿真设计

英文标题：Simulation design of rapid precision forming die for pipe end

作者：李晓广许石民孙登月

单位：燕山大学

关键词：冷成形模具管端仿真

分类号：

出版年,卷(期):页码：2016,41(1):101-106

摘要：

传统的发动机水管加工方法是采用车床加工，产品精度低，表面质量差，并且生产效率低下。圆柱管在轴向载荷的作用下能发生对称的局部屈曲变形。利用这一原理，通过模具对钢管进行冷加工成形为所需的喇叭状管口。但是钢管脱模后，在残余应力的作用下会发生弹性恢复，使得所需的尺寸发生变化影响成形精度。另一方面，成形过程中作用在模具上的摩擦力影响模具寿命，需给模具选择合适的公差。基于以上两种因素，得到了合适的上模深度p=3.60 mm，并给模具尺寸确定了合适的上下偏差。据此加工模具并利用该模具成形出了所需形状和精度的钢管。

A traditional way of manufacturing water pipe in the engine by the lathe is of low precision, poor surface quality and low productivity. The cylindrical pipe occurs local symmetric buckling under axial load. Based on this principle, the pipe end was formed into the desired flared nozzle by the die. However, when the pipe was released from the die, springback occured to change the formed sizes and affected the forming accuracy due to the residual stress. Moreover,the die life was shortened by frictions in the forming process, and the manufacturing tolerances of the die was suggested to choose suitably. Considering the above two factors,the suitable depth of the upper die was 3.60 mm, and the appropriate upper and lower deviation of the die size was determined at the same time. In result, the die is manufactured, and the pipe end is formed as the required shape and qualified precision.

基金项目：

河北省自然科学基金资助项目（E2012203008）

李晓广（1990-），男，硕士研究生

参考文献：

[1]袁杰,李健, 窦凤楼. 管件缩径工艺仿真分析[J].锻压技术,2015,40(6):51-54.

Yuan J ,Li J,Dou F L. Finite element analysis of thin-walled tube end forming[J].Forging ＆ Stamping Technology,2015,40 (6):51-54.

[2]胡东坡, 王雷刚,黄瑶.扁长型铝型材挤压稳态模拟及模具改进[J].锻压技术,2015,40(4):70-73.

Hu D P,Wang L G,Huang Y. Steady state simulation and die improvement of flat type aluminum profile extrusion[J].Forging ＆ Stamping Technology,2015,40 (4):70-73.

[3]杜红伟,李克彬,应富强.薄壁管管端成形的有限元分析[J].塑性工程学报,2010,17(4):66-70.

Du H W,Li K B,Ying F Q. Finite element analysis of thin-walled tube end forming[J].Journal of Plastic Engineering,2010,17(4):66-70.

[4]夏巨谌,王英,胡国安,等.薄壁管缩径挤压工艺的模拟分析与应用[J].石油机械,1997,(3):18-21.

Xia J C,Wang Y,Hu G A, et al. Reduced-diameter thin-walled tube extrusion process simulation analysis and application[J]. Petroleum Machinery,1997,(3):18-21.

[5]刘钢,阴雪莲,苑世剑.管件外压成形的数值模拟及屈曲特征分析[J].哈尔滨工业大学学报,2006,38(2):188-190.

Liu G,Yin X L,Yuan S J. Numerical simulation and analysis of buckling characteristics of the outer tubular member pressure forming[J]. Journal of Harbin Institute of Technology，2006,38(2):188-190.

[6]孙志超,杨合.管轴压成形失稳起皱力学过程的研究[J].机械工程学报，2003,39(6):110-113.

Sun Z C,Yang H. Mechanical Research of pipe wrinkling in axial load forming process[J]. Journal of Mechanical Engineering, 2003,39(6):110-113.

[7]Gouveia B P P, Alves M L, Martins P A F.Compression beading and nosing of thin-walled tubes using a die:experimental and theoretical investigation[J].International Journal of Mechanics and Materials in Design,2006,1(3):7-16.

[8]Shimin Xu,Huagui Huang,Dengyue Sun.Precision forming of pipe joint based on cold extrusion Technology[J].Applied Mechanics & Materials,2010，37-38:875-879.

[9]斯德洛夫M B,波波夫E A.金属压力加工原理[M].北京:机械工业出版社,1980.

De Love M B, Popov E A. Metal Press Working Principle[M]. Beijing: China Machine Press, 1980.

[10]汪大年.金属塑性成形原理[M].北京:机械工业出版社,1986.

Wang D N. Metal Plastic Forming Principle[M]. Beijing: China Machine Press, 1986.

[11]石亦平.ABAQUS有限元分析实例详解[M].北京：机械工业出版社,2006.

Shi Y P. ABAQUS Finite Element Analysis of Detailed Examples[M]. Beijing: China Machine Press, 2006.

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