锻压技术

液压式精冲压力机抗偏载曲线的绘制与研究

英文标题：Drawing and research on anti-eccentric load curve for hydraulic fine blanking press

作者：刘德政李炎罗静秦志洪

单位：湖北文理学院纯电动汽车动力系统设计与测试湖北省重点实验室 2.襄阳博亚精工装备股份有限公司

分类号：TH164

出版年,卷(期):页码：2020,45(11):143-149

摘要：

精冲压力机作为实现精冲技术的基础，其抗偏载性能是影响精冲压力机偏心冲压能力的关键因素。基于液压式精冲压力机的三级精度要求，首先，采用有限元拓扑分解法建立液压式精冲压力机模型，通过在距滑块中心线的不同距离施加偏载荷，利用三维热力耦合数值模拟技术计算滑块在不同位置的最大偏载荷，得到滑块偏转位移与偏载荷的变化关系；然后，通过曲线拟合法对点位移与偏载荷进行拟合，分别沿滑块长度和宽度方向绘制抗偏载曲线；最后，设计相关试验进行验证。结果表明：标准理论值与试验值吻合较好，抗偏载曲线呈指数分布，滑块宽度方向的抗偏载能力大于长度方向的抗偏载能力。

As the foundation of fine blanking technology, the anti-eccentric load performance of fine blanking press is a key factor affecting its eccentric stamping capacity. Based on the triple-level accuracy requirement of hydraulic fine blanking press, the model of hydraulic fine blanking press was firstly established by the finite element topology decomposition approach. By applying eccentric loads at different distances from the center line of slider, the maximum eccentric load at different positions of slider were calculated by the 3D thermo-mechanical coupled numerical simulation technology, and the relationship between deflection displacement of slider and eccentric load was achieved. Furthermore, the relation of point displacement and eccentric load was fitted by curve fitting method, and the anti-eccentric load curve was drawn along the length and width directions of slider respectively. Finally, the anti-eccentric load curve was verified by experiment. The results show that the experiment data are consistent with the standard theoretical values, the anti-eccentric load curve is exponentially distributed, and the anti-eccentric load capacity in the width direction of slider is greater than that in the length direction.

基金项目：

湖北省自然科学基金面上项目（2020CFB284）

刘德政（1987-），男，博士，副教授 E-mail：liudezheng126@126.com；通讯作者：罗静（1989-），女，硕士，实验员 E-mail: luojing@hbuas.edu.cn

参考文献：

[1]Zhao X, Liu Y, Lin H, et al. Finite element analysis and topology optimization of a 12000 kN fine blanking press frame[J]. Structural & Multidisciplinary Optimization, 2016, 54(2):375-389.

[2]李雅倩, 王斌修. 精冲工艺与模具设计[J]. 制造技术与机床, 2010, 10(4):17-20.

Li Y Q, Wang B X. Precise blanking technology and design of the precise blanking die[J]. Manufacturing Technology & Machine Tool, 2010, 10(4):17-20.

[3]Hsieh K C, Chen K T, Kanjanaphachoat C, et al. The application of finite element methods to study force transducer anti-deviated load characteristics[J]. Applied Mechanics & Materials, 2011, (138-139):168-174.

[4]吴生富, 金淼, 聂绍珉, 等. 大型锻造液压机全预紧组合机架的整体性及影响因素分析[J]. 塑性工程学报, 2006, 13(2): 110-113.

Wu S F, Jing M, Nie S M, et al. The integration property of heavy forge hydraulic-press and its influence factors[J]. Journal of Plasticity Engineering, 2006, 13(2):110-113.

[5]赵长财, 于寅振. 液压机立柱导套接触应力研究[J]. 重型机械, 1995, (4):14-16.

Zhao C C, Yu Y Z. The research on contact stress of hydraulic press column guide sleeve[J]. Heavy Machinery, 1995, (4):14-16.

[6]吕国盛, 孙海洋. 多工位高速压力机偏载分析[J]. 机械设计, 2018, 35(S1):376-378.

Lyu G S, Sun H Y. Anti-bias system of transfer high speed press[J]. Journal of Machine Design, 2018, 35(S1):376-378.

[7]Ou H, Balendra R. Die-elasticity for precision forging of aerofoil sections using finite element simulation[J]. Journal of Materials Processing Technology, 1998, 76(1-3):56-61.

[8]Ou H, Armstrong C G. Evaluating the effect of press and die elasticity in forging of aerofoil sections using finite element simulation[J]. Finite Elements in Analysis and Design, 2006, 42(10):856-867.

[9]Kwak T S, Kim Y J, Bae W B. Finite element analysis on the effect of die clearance on shear planes in fine blanking[J]. Journal of Materials Processing Technology, 2002, 130(11):462-468.

[10]詹俊勇, 仲太生, 王军领,等. 双点压力机抗偏载能力研究[J]. 锻压装备与制造技术, 2013, 48(2):30-32.

Zhan J Y, Zhong T S, Wang J L, et al. Research of partial loading resistance for double point press[J]. China Metalforming Equipment & Manufacturing Technology, 2013, 48(2):30-32.

[11]Zhao Y, Guo H, Fu M W, et al. Fabrication of bulk ultrafine grained titanium alloy via equal channel angular pressing based thermomechanical treatment[J]. Materials & Design, 2013, 46(4):889-894.

[12]Zhang J, Wan C, Sato T. Advanced markov chain monte carlo approach for finite element calibration under uncertainty[J]. Computer-aided Civil and Infrastructure Engineering, 2013, 28(7):522-530.

[13]Yan Y. Galerkin finite element methods for stochastic parabolic partial differential equations[J]. Siam Journal on Numerical Analysis, 2006, 43(4):1363-1384.

[14]顾宏伟, 王娟. Q345D中厚板表面裂纹分析[J]. 中国金属通报, 2018, 994(7):293-295.

Gu H W, Wang J. Analysis of surface crack of medium and heavy plate of Q345D[J]. China Metal Bulletin, 2018, 994(7):293-295.

[15]Shi Y, Dong L, Wang H, et al. Fatigue features study on the crankshaft material of 42CrMo steel using acoustic emission[J]. Frontiers of Mechanical Engineering, 2016, 11(3):233-241.

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