锻压技术

快锻液压机检测精度影响因素研究

英文标题：Research on influencing factors of detection accuracy for quick forging hydraulic press

作者：柯锋贤张朝壮陈柏金

分类号：TH137

出版年,卷(期):页码：2021,46(8):174-179

摘要：

针对目前快锻液压机采用位移传感器测量锻件尺寸与实际尺寸存在一定误差的问题，以31.5 MN快锻液压机为研究对象，通过数学建模和有限元分析，研究了活动横梁受力偏转对锻件检测精度的影响规律；通过有限元分析，研究了具有不同上拱弯曲情况的移动工作台的变形规律；通过建立下砧与移动工作台间氧化皮的数学模型，研究了氧化皮压实变形对检测精度的影响规律。结果表明，活动横梁偏转和工作台变形对检测精度的影响均为线性的，可以在控制系统中通过预设线性变形规律对所得锻件尺寸进行补偿，而氧化皮的变形为非线性，不能通过预设线性变形关系对造成的锻件尺寸检测误差进行补偿。

Aiming at the problem that there was a certain error between the actual sizes and the measured sizes of forgings by the displacement sensor in the current quick forging hydraulic press，for the 31.5 MN quick forging hydraulic press，the influence laws of deflection by force for movable beam on the detection accuracy of forgings were studied by mathematical modeling and finite element analysis, and the deformation laws of mobile worktables with different upper arch bending conditions were studied by finite element analysis. Then, the mathematical model of oxide scale between the lower anvil and the mobile worktable was established，and the influence law of the compaction deformation for oxide scale on the detection accuracy was studied. The results show that the influences of the deflection for movable beam and the deformation for worktable on the detection accuracy are linear，and the sizes of obtained forgings can be compensated by preset linear deformation law in the control system. However，the deformation of oxide scale is non-linear，and it is impossible to compensate the caused size detection error for forgings by preset linear deformation relationship.

基金项目：

甘肃省创新基地和人才计划项目资助（18JR2JA001）

柯锋贤（1970-），男，学士，高级工程师 E-mail：kfx66@126.com

参考文献：

［1］赵桂春. 锻造液压机锻件成形尺寸补偿控制研究
［D］.秦皇岛：燕山大学，2019.

Zhao G C.Research on Forging Dimension Compensation Control of Forging Hydraulic Press
［D］.Qinhuangdao:Yanshan University，2019.

［2］姚静，王佩，宋英哲，等.锻造液压机锻件变形量精准补偿控制研究
［J］.机械工程学报，2021，57（9）:1-9.

Yao J，Wang P，Song Y Z，et al. Forging dimension accurate-exact control of forging hydraulic press
［J］. Journal of Mechanical Engineering，2021，57（9）:1-9.

［3］邢维才. 从日本引进的2000tf快锻液压机简介
［J］. 重型机械，1987，(5): 37-45.

Xing W C. Brief introduction of 2000tf fast forging hydraulic press imported from Japan
［J］.Heavy Machinery，1987，(5): 37-45.

［4］刘静香，程鹏飞. 锻造液压机铸铁垫板磨损的原因分析及改进措施
［J］. 煤矿机械，2010，(10): 173-175.

Liu J X，Cheng P F. Wear analysis and improvement measures of cast iron plate in forging hydraulic press
［J］. Coal Mine Machinery，2010，(10): 173-175.

［5］郭彪，葛昌纯，颜永年，等. 压制工艺及压坯高径比对金属粉末致密化成形影响的模拟
［J］. 热加工工艺，2012，41(18): 64-68.

Guo B，Ge C C，Yan Y N，et al. Simulation and analysis on effect of pressing processes and height-diameter ratio on densification of metal powder
［J］. Hot Working Technology,2012，41(18): 64-68.

［6］王德广. 金属粉末高致密化成形及其数值模拟研究
［D］.合肥：合肥工业大学，2010.

Wang D G. Research on High Densification and Numerical Simulation of Metal Powder Compaction Process
［D］.Hefei: Hefei University of Technology，2010.

［7］彭帮国. 铁基粉末温压成型规律的数值模拟研究
［D］.合肥：合肥工业大学，2013.

Peng B G. Research on Numerical Simulation of the Iron-based Powder Warm Compaction Forming Law
［D］.Hefei: Hefei University of Technology，2013.

［8］徐润泽. 粉末冶金结构材料学
［M］. 长沙：中南工业大学出版社，1998.

Xu R Z. Powder Metallurgy Structural Materials
［M］. Changsha：Central South University of Technology Press，1998.

［9］Hirose N, Asami J, Fujiki A,等.粉末冶金结构零件材料的泊松比
［J］.粉末冶金技术，2009，27(3):226-232.

Hirose N, Asami J, Fujiki A, et al. Poisson′s ratio of sintered materials for structural machine parts
［J］. Powder Metallurgy Technology，2009，27(3):226-232.

［10］Hideshi, Miura, Aiichiro，et al. Effect of porosity and pore shape on the young′s moduli of sintered iron and steel
［J］. Journal of the Japan Society of Powder and Powder Metallurgy，1980，27(3): 82-87.

［11］宋平. 铁基粉末压制成形数值模拟研究
［D］.合肥：合肥工业大学，2008.

Song P. Research on the Compaction Simulation of the Iron-based Powder
［D］.Hefei: Hefei University of Technology，2008.

［12］Ariffin A K, Mujibur R M, Muhamad N，et al. Thermal-mechanical model of warm powder compaction process
［J］. Materials Processing Technology，2001，116(1):67-71.

服务与反馈：

【文章下载】【加入收藏】