Transactions of Materials and Heat Treatment

Title：Process design on hot precision forging of gear blank with ribbed plate

Authors： Xu Wei Xiao Tiezhong

Unit： Sichuan Engineering Technical College

KeyWords： gear blank with ribbed plate hot precision forging open-die forging closed-die forging numerical simulation

ClassificationCode：

year,vol(issue):pagenumber：2017,42(2):12-16

Abstract：

The forming processes of two hot precision forging for gear blank with ribbed plate including open-die forging and closed-die forging were proposed. Then, their forming processes of gear blank with ribbed plate were simulated by the finite element analysis software, and the metal flow laws of two cases were compared. The simulation results show that the ribbed plate is not full in open-die forging with large forming load. However, if closed-die forging was used, the forming quality of part is higher with small forming load. The reason of large forming load and insufficient filling of the ribber plate for open-die forging is that the flow resistance of metal used for filling the ribbed plate increases and the metal radial flow intensifies to form a large flash in the middle and later stage of forming. With the upper die moving down, the deformation of flash consumes the energy of slide block and enlarges the contact area with die. In the final stage, the forming load increases sharply and the mold cavity filling is not full. Technological tests show that the test results are in accordance with the simulation results.

Funds：

四川省教育厅科研资助项目（16ZB0495）

徐伟（1981-），男，硕士，讲师

Reference：

［1］徐承亮，曹志勇，王大军，等.基于SGPLVM的齿轮坯预锻件多目标优化设计[J].机床与液压，2016，44(9)：81-84.Xu C L, Cao Z Y, Wang D J, et al. Multiple-target optimization design of pre-forging for gear blank based on SGPLVM [J]. Machine Tool & Hydraulics, 2016, 44(9): 81-84.
［2］Altinbalik T, Akata H E, Can Y. Approach for calculation of press loads in closed-die upsetting of gear blanks of gear pumps [J]. Materials & Design, 2007, 28(2)：730-734.
［3］Avci E. A new method for expert target recognition system: Genetic wavelet extreme learning machine (GAWELM)[J]. Expert Systems with Applications, 2013, 40(10)：3984-3993.
［4］胡建军，李小平. DEFORM-3D塑性成形CAE应用教程[M]．北京：北京大学出版社，2010.Hu J J, Li X P. Numerical Simulation and the Forming Application Tutorial by DEFORM-3D [M]. Beijing: Peking University Press, 2010.
［5］金伟民. 不同设备特性下的锻造成形过程数值模拟技术研究[D]. 上海：上海交通大学, 2007.Jin W M. Research on the Simulation Techniques of Forging with Different Equipment Characteristics [D]. Shanghai: Shanghai Jiao Tong University, 2007.
［6］杜桂春. 国内外螺旋压力机两个主要设计参数比较分析[J]. 辽宁师专学报，2005，7(2)：88-91.Du G C. Comparison and analysis of two main design parameters of screw press at home and abroad [J]. Journal of Liaoning Teachers College, 2005, 7(2): 88-91.
［7］曾德涛, 周杰, 张辉, 等. 某齿轮坯精锻金属流动规律分析及工艺优化[J]. 热加工工艺, 2012, 41(5)：84-86.Zeng D T, Zhou J, Zhang H, et al. Metal flow analysis of precision forging process and optimization of technology for gear blank [J]. Hot Working Technology, 2012, 41(5): 84-86.
［8］周杰，张辉，郑晓凯，等. 挡位齿轮坯闭式精锻缺陷有限元分析与工艺优化[J]. 农业机械学报, 2013, 44(3)：251-256.Zhou J, Zhang H, Zheng X K, et al. Finite element analysis and process optimization in closed precision-forging for shifting gear blank [J]. Transactions of the CSAE, 2013, 44(3):251-256.

Service：

【This site has not yet opened Download Service】【Add Favorite】