锻压技术

直齿圆柱齿轮冷挤压变过盈量组合凹模设计方法

英文标题：Design on changeable interference combined die of spur gear in cold extrusion

作者：冯文杰冉力夏泽雨陈莹莹付森涛

分类号：TG376

出版年,卷(期):页码：2017,42(2):104-109

摘要：

针对载重汽车用直齿圆柱齿轮冷挤压组合凹模破裂问题，应用有限元分析软件Deform-3D对均匀过盈量组合凹模进行了失效分析，基于均匀过盈量组合凹模失效的原因，提出变过盈量组合凹模的设计方法，通过改变中圈与内圈的接触，得到变过盈量的预紧结构，使预紧状态下模芯的最大切向压应力出现在模芯成形区齿根，以抵消工作状态下出现在该处的最大切向拉应力，改善了模具的应力分布。实际生产过程中模具使用情况良好，无破裂、掉块等情况。研究结果表明，变过盈量组合凹模的设计方法可以避免组合凹模的破裂，此方法为组合凹模的设计提供了较好的依据。

For the fracture problem of cold extrusion combined die for spur gear of camion, the failure analysis of the uniform interference combined die was carried out by the finite element analysis software Deform-3D. Based on the failure causes of uniform interference combined die, the design method of changeable interference combined die was proposed, and the preload structure of changeable interference was obtained by changing the contact of the middle ring and inner ring. Therefore, the maximum tangential compressive stress appeared on the opening part of the die core under preload condition to offset the maximum tangential tensile stress appearing at the same place under work condition, and the stress distribution of die was improved. The die used in the process of actual production was in good condition without fracture, swap block and so on. The research results show that the design method of the changeable interference combined die can avoid the fracture of the combined die, and provides a good basis for the design of combined die.

基金项目：

重庆市科委资助项目（cstc2014yykfA60001）;重庆市教委科学技术研究资助项目（KJ1400944）

冯文杰（1964-），男，硕士，教授冉力（1991-），男，硕士研究生

参考文献：

［1］王向东, 张宝红, 张治民. 直齿圆柱齿轮精锻技术的发展现状与趋势[J]. 锻压装备与制造技术, 2006, 41(2):21-24. Wang X D, Zhang B H, Zhang Z M. Present condition and development of automotive transfer feeder of stamping forming [J]. China Metalforming Equipment & Manufacturing Technology, 2006, 41(2):21-24.
［2］邱德花，边翊，钟志平，等. 基于AFDEX的直齿圆柱齿轮冷挤压工艺模拟研究[A].第5届全国精密锻造学术研讨会[C]. 济南，2013.Qiu D H, Bian Y, Zhong Z P, et al. Numerical simulation on cold extrusion technique for spur cylinder gear with large module [A]. The Fifth National Symposium on Precision Forging[C].Jinan,2013.
［3］姚国平, 陈磊. 齿轮冷挤压成形影响因素的数值模拟研究[J]. 热加工工艺, 2015,44(23):169-171.Yao G P, Chen L. Numerical simulation research on affecting factors of gear cold extrusion forming [J]. Hot Working Technology, 2015,44(23):169-171.
［4］冯文杰, 付森涛, 夏泽雨, 等. 基于数值模拟的齿轮冷精整齿向精度预测[J]. 锻压技术, 2016,41(1):52-56.Feng W J, Fu S T, Xia Z Y, et al. The predicting of gear direction accuracy about gear cold sizing which based on the numerical simulation [J]. Forging & Stamping Technology, 2016,41(1):52-56.
［5］Eyercioglu O, Kutuk M A, Yilmaz N F. Shrink fit design for precision gear forging dies [J]. Journal of Materials Processing Technology, 2009, 209:2186-2194.
［6］Lee H C, Saroosh M A, Song J H, et al. The effect of shrink fitting ratios on tool life in bolt forming processes [J]. Journal of Materials Processing Technology, 2009, 209:3766-3775.
［7］韩豫. 直齿内齿轮冷精锻成形工艺分析及实验研究[D]. 合肥:合肥工业大学, 2009.Han Y. Process Analysis and Experiment Study on Cold Precision Forging of Straight Inner Gear [D].Hefei: Hefei University of Technology, 2009.
［8］王强, 昌木松, 陈忠家, 等. 圆柱直齿轮挤压组合凹模的优化设计[J]. 合肥工业大学学报:自然科学版, 2008, 31(9):1415-1418.Wang Q, Chang M S, Chen Z J, et al. Optimum design of combined extrusion die for cylindrical spur gear [J].Journal of Hefei University of Technology：Natural Science, 2008, 31(9):1415-1418.
［9］胡成亮, 袁兆峰, 蔡冰, 等. 齿形组合凹模弹性变形规律分析[J]. 锻压装备与制造技术, 2008, 43(5): 84-87.Hu C L, Yuan Z F, Cai B, et al. Elastic deformation rules of gear-shape combination die [J]. China Metalforming Equipment & Manufacturing Technology, 2008, 43(5): 84-87.
［10］胡建军. DEFORM-3D塑性成形CAE应用教程[M]. 北京：北京大学出版社, 2011.Hu J J. DEFORM-3D Plastic Forming CAE Application Tutorial [M]. Beijing: Peking University Press, 2011.

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