锻压技术

斜齿轮冷精锻模具弹性变形规律数值模拟研究

英文标题：Numerical simulation of cold precision forging of mold elastic deformation on helical gear

作者：王峰冯玮

单位：武汉理工大学

分类号：TG315.2

出版年,卷(期):页码：2016,41(8):127-131

摘要：

采用模具应力分析模块模拟分析了某一斜齿轮冷精锻模具的弹性变形，获得了模具应力分布；结合齿形凹模型腔几何特点，得出不同位置的型腔齿廓弹性变形量及弹性变形规律；根据所获得的齿形弹性变形量，采用反补偿法对齿轮凹模型腔齿形部分进行修正，并再次进行数值模拟和分析，比较了修正前后齿形弹性变形量。研究表明，不同高度齿形型腔曲线的弹性变形量变化趋势一致，但各齿形曲线的齿根、渐开线和齿顶3部分变形量不同，从齿顶到齿根和从齿形型腔上端面至下端面，其弹性变形量逐渐减少，凹模型腔齿形修正后可减小成形齿轮弹性变形量，从而为提高斜齿轮成形精度提供了方法。

The mold elastic deformation in cold precision forging of helical gear was analyzed by mold stress analysis module, and the distribution of die stress was obtained. The amount of elastic deformation and the elastic deformation regularity of the tooth cavity profile at the different positions were carried out combining with the characteristics of tooth die cavity geometry. According to the elastic deformation of tooth cavity profile, the die cavity of tooth was modified by reverse compensation method, and numerical simulation and analysis were conducted again. Furthermore, elastic deformations of tooth before and after correction were compared. Studies are shown that the trends of elastic deformation of the tooth cavity profile at different heights are consistent, but the amounts of elastic deformation in the dedendum, involute and addendum of tooth cavity profile curves are different respectively, which decrease gradually from addendum to dedendum and from the top end face to the lower end face. Thus, the amount of springback of tooth cavity profile reduces after modification, and a method is provided to improve the forming accuracy of helical gear.

基金项目：

国家自然科学基金资助项目(51475344)；湖北省自然科学基金资助项目（2014CFB855）

王峰（1990-），男，硕士研究生冯玮（1973－），女，博士，副教授

参考文献：

［1］冯文杰，段红尊，陈莹莹，等.基于数值模拟的螺旋伞齿轮精密成形工艺参数分析[J]. 锻压技术，2014，39（2）：147-150.Feng W J, Duan H Z, Chen Y Y, et al. Research on precision forming process parameters of spiral bevel gear based on numerical simalation[J]. Forging & Stamping Technology, 2014, 39(2):147-150.
［2］胡成亮. 直齿轮冷锻成形工艺及精度控制研究[D]. 合肥: 合肥工业大学, 2007.Hu C L. Research on Cold Forging Technology and Precision Control of Spur Gears [D]. Hefei: Hefei University of Technology, 2007.
［3］凌文凯. 直齿锥齿轮成形工艺及精度控制的研究[D]. 重庆: 重庆理工大学, 2012.Ling W K. Research on Bevel Gears Forming Technology and Precision Control [D].Chongqing: Chongqing University of Technology, 2012.
［4］Lee Y, Lee J. Analysis of elastic characteristics at forging die for the cold forged dimensional accuracy [J]. Journal of Material Processing Technology，2002，130-131: 532-539.
［5］冯玮. 圆柱螺旋齿轮冷精锻成形的三维刚塑性有限元模拟[J]. 热加工工艺, 2010,39(11): 91-93.Feng W. 3D rigid plastic finite element simulation of precision cold forging of helical gear [J].Hot Working Technology, 2010,39(11): 91-93.
［6］刘华, 席庆坡, 霍艳军, 等. 圆柱齿轮冷精锻数值模拟及其轮齿修形规律[J]. 西安交通大学学报, 2004,38(11): 1186-1190.Liu H, Xi Q P, Huo Y J, et al. Numerical simulation to mold modification of cold precision forging of spur gear [J]. Journal of Xi′an Jiaotong University, 2004,38(11): 1186-1190.
［7］黄荣学. 冷挤压组合凹模的应力场数值模拟机疲劳寿命估算研究[D]. 成都: 四川大学,2005.Huang R X. FE Analysis of Composed Dies Stress in Cold Extrusion Process and Study Fatigue Life of Dies [D]. Chengdu: Sichuan University, 2005.
［8］石然然, 李名尧, 王波, 等. 基于DEFORM-3D的曲轴锻造模具应力分析[J]. 热加工工艺, 2014,43(3): 121-123.Shi R R, Li M Y, Wang B, et al. Die stress analysis of crankshaft forging based on DEFORM-3D[J]. Hot Working Technology, 2014,43(3): 121-123.
［9］张莉, 李升军. DEFORM在金属塑性成形中的应用[M]. 北京: 机械工业出版社, 2009.Zhang L, Li S J. The Usage of DEFORM in Metal Plastic Forming [M]. Beijing: China Machine Press, 2009.
［10］熊惟皓, 周理. 中国模具工程大典-模具材料及热处理[M]. 北京: 电子工业出版社, 2007.Xiong W H, Zhou L. China Mould Engineering Dictionary-Mold Materials and Heat Treatment [M]. Beijing: Electronic Industry Press, 2007.
［11］冯玮. 圆柱螺旋齿轮精密成形规律与工艺优化的研究[D]. 武汉: 武汉理工大学, 2011.Feng W. Research on Deformation Law and Process Optimization of Precision Forging of Helical Gears [D]. Wuhan: Wuhan University of Technology, 2011.

服务与反馈：

【文章下载】【加入收藏】