锻压技术

带肋板齿轮坯热精锻成形工艺方案设计

英文标题：Process design on hot precision forging of gear blank with ribbed plate

作者：徐伟肖铁忠

单位：四川工程职业技术学院

分类号：

出版年,卷(期):页码：2017,42(2):12-16

摘要：

提出带肋板齿轮坯开式模锻和闭式模锻两种热精锻成形工艺方案，借助有限元分析软件模拟了两种工艺方案下齿轮坯的成形过程，分析比较了两种方案中的金属流动规律。仿真结果显示：采用开式模锻，肋板充填不饱满，成形载荷大；采用闭式模锻，零件成形质量较高，成形载荷较小。导致开式模锻成形载荷大并且肋板充填不饱满的原因为：成形中后期充填肋板的金属流动阻力增加，金属径向流动加剧并形成较大飞边，随着上模下压，飞边变形消耗滑块能量，并增加了与模具的接触面积，导致成形力急剧增加而模具型腔充填不饱满。工艺实验表明，其结果与数值模拟相吻合。

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.

基金项目：

四川省教育厅科研资助项目（16ZB0495）

徐伟（1981-），男，硕士，讲师

参考文献：

［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.

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