锻压技术

大型热模锻压力机机身横向振动与变形的动态测试

英文标题：Dynamic measure of horizontal oscillations and deformations for a large-tonnage hot-forging press

作者：孙友松周庆刚黎勉程永奇

单位：广东工业大学

关键词：压力机机身变形偏载振动动态测试

分类号：TG316

出版年,卷(期):页码：2015,40(12):71-76

摘要：

某40 MN大型双点热模锻压力机在负荷30 MN试生产时，发生了严重的导轨磨损事故。为寻求事故原因，设计了压力机工作过程机身振动和变形的“分点测量-合成分析”的测试方案。采用激光位移传感器和数字存储示波器对高达8 m的机身6个部位分别进行了动态测量，通过合成分析获得了机身的实际振动和变形情况。机身在30 MN负荷时最大偏摆位移超过5 mm；伴随振动，机身产生了较大的横向变形，机身横向最大压缩超过1.2 mm，影响了导轨间隙，这是导致导轨磨损的主要原因。分析认为,对大型多工位压力机而言，机身变形不仅影响锻件质量，也影响压力机正常运行，应充分注意机身的刚度设计。

Serious wears of slide rails took place, when the working pressure was only 30 MN in trial production for a 40 MN double-point hot-forging press. In order to find the failure reasons, a plan of point by point measurement and composite analysis was designed to measure the oscillation and deformation of the press. With a laser sensor and digital oscilloscope, the horizontal displacements at six points on the press frame with a height of 8 m were measured dynamically. The actual vibration and deformation of the fuselage were obtained by composite analysis, and the maximum deflection of the fuselage was more than 5 mm. With oscillating, obvious horizontal deformations of the fuselage took place, and the maximum horizontal deformation of the fuselage was more than 1.2 mm to affect the clearances at slide rails. So the above results become the main reason for the wearing of slide rails. The analysis results show that for large-tonnage multi-stage presses, the fuselage deformations affect not only the product quality, but also the normal operation of the press. Therefore, the stiffness design of the fuselage should be emphasized.

基金项目：

国家自然科学基金资助项目(51175088)；广东省战略性新兴产业发展专项（2012A090100014）

作者简介：孙友松（1944-），男，硕士，教授，博士生导师

参考文献：

［1］何德誉.曲柄压力机[M].2版.北京：机械工业出版社，1996.He D Y. Crank Presses[M]. The Second Edition. Beijing: China Machine Press, 1996.
［2］华中工学院等五院校编写组. 机械传动与曲柄压力机[M].北京：人民教育出版社，1978 . Huazhong University of Technology. Mechanical Transmission and Crank Presses[M]. Beijing: Peoples Educational Press,1978.
［3］中国机械工程学会塑性工程分会. 锻压手册:第三卷[M].北京：机械工业出版社，2008.China Society of Plasticity Engineering. Handbook of Forging & Stamping [M]. Beijing: China Machine Press, 2008.
［4］Q/GD 001—2006, 精密热模锻压力机技术条件[S]. Q/GD 001—2006, Technical requirements for precision hot-forging presses[S].
［5］黄菊花，揭小平，何成宏，等. E2S4000-MB型机械压力机振动传播及现场实测[J].锻压技术，1999，24(2):43-46. Huang J H, Jie X P, He C H,et al. Vibration propagation and actual measurement on E2S4000-MB mechanical press[J]. Forging & Stamping Technology, 1999, 24(2):43-46.
［6］杨先健，战嘉恺，邵斌,等. 大型压力机的振动与隔振问题[J].工程建设与设计，2003，(8)：14-16.Yang X J, Zhan J K, Shao B,et al. Vibration & isolation for large-tonnage presses[J]. Industrial Construction & Design, 2003,(8):14-16.
［7］杨东祺，车卫红，徐超.冷锻压力机机身振动特性的模态研究[J].锻压技术，2014，39（5）：92-95. Yang D Q, Che W H, Xu C . Research on vibration characteristics of cold forging press body[J]. Forging & Stamping Technology, 2014, 39(5):92-95.
［8］张祖芳.开式压力机机身的有限元分析及其优化设计[D]. 南京：东南大学，2004.Zhang Z F . FEM Analysis and Optimum Design for Frame of Open-back Press[D]. Nanjing: Southeast University,2004.
［9］隋晓东，戴挺，高锋.压力机机身振动特性的模态分析[J].噪声与振动控制，2010,30(1):：14-18. Sui X D, Dai T, Gao F . Modle analysis of press frame oscillation[J]. Control of Noises & Oscillations,2010,30(1):14-18.
［10］张华，杨固川，胡孟君，等.800MN大型模锻压机测试分析研究[J].锻压技术，2014，39（3）：90-93.Zhang H, Yang G C, Hu M J,et al. Study on measuruing and ananysis for large-tonnage press[J]. Forging & Stamping Technology, 2014,39(3):90-93.
［11］杨叔子，杨克冲，吴波，等.机械工程控制基础[M]. 武汉：华中科技大学出版社，2011.Yang S Z, Yang K C, Wu B，et al. Fundamentals of Mechanical Engineering Control[M]. Wuhan: Press of HUST, 2011.

服务与反馈：

【文章下载】【加入收藏】