锻压技术

闭挤式精冲直齿轮模具结构优化设计

英文标题：Optimization design of spur gear mold structure for closed-extruding fine blanking

作者：邓明王若璜刘潞周

单位：重庆理工大学

关键词：分流降压腔模具润滑闭挤式

分类号：TG115

出版年,卷(期):页码：2015,40(5):114-118

摘要：

针对闭挤式精冲模具型腔压力大的特点，提出了降低型腔压力的分流降压腔设计思路，并采取了分别在模具和坯料上设置分流降压腔的方案。以35钢直齿轮的闭挤式精冲为对象，采用Deform-3D有限元软件分别模拟了在坯料和凸模上设置半径为1~8 mm的分流降压腔，以研究其对型腔压力的调节作用以及其对零件成形质量的影响。分析表明，坯料上设置分流降压腔能更有效降低模具在径向和切向的受力，且分流降压腔半径不易过大，恰当的降压腔半径能减少齿形件齿顶开裂。此外，为减少干摩擦，提出了在模具相应位置设置润滑油存储结构。最后，设计了带有分流降压腔和润滑结构的实验模具，并通过实验检验了模具的实用性。

For the great pressure in the mold cavity of closed-extruding fine blanking, the idea of shunting decompression chamber to reduce cavity pressure was proposed, and the shunt decompression chambers were set on blank and punch respectively. For the closed-extruding fine blanking of 35 steel spur gear, the shunt decompression chambers set with radius from 1 mm to 8 mm on punch and blank were simulated by finite element software Deform-3D to study the effects on cavity pressure adjustment and forming quality. The analysis results show that the shunt decompression chamber set on blank can reduce the radial and tangential stresses more efficiently, however, the appropriate radius of shunt decompression chamber can reduce crack at the top of gear. In addition, the setting of lubrication storage structure on relevant position of mold was also proposed in order to reduce dry friction. Finally, a mold with shunt decompression chamber and lubrication structure was designed. The utility of the mold was verified by experiments.

基金项目：

国家自然科学基金资助项目（51375521）；重庆市科技开发项目（cstc2012gg-yyjs60009）

邓明（1960-），男，硕士，教授王若璜（1990-），男，硕士研究生

参考文献：

［1］邓明，刘潞周，吕琳，等. 闭挤式精冲直齿轮的材料流动分析[J].锻压技术，2014，39(6)：114-117.Deng M, Liu L Z, Lv L, et al. Material flow analysis on spur gear of closed extruding fine blanking[J].Forging & Stamping Technology, 2014,39(6):114-117.
［2］夏巨谌.金属塑性成形工艺及模具设计[M].北京：机械工业出版社，2007.Xia J C. The Metal Plastic Forming Technology and Die Design [M].Beijing: China Machine Press, 2007.
［3］徐春，张驰，阳辉.金属塑性成形理论[M].北京：冶金工业出版社，2009.Xu C, Zhang C, Yang H. The Metal Plastic Forming Theory [M]. Beijing: Metallurgical Industry Press, 2009.
［4］洪慎章.齿轮轴冷挤压模具设计[J].模具制造，2009,9(5)：63-65.Hong S Z. Design of cold extruding die for gear axis [J]. Die & Mould Manufacture, 2009, 9(5):63-65.
［5］丁海，刘涛，翟德梅.冷冲模具失效研究[J].热加工工艺，2013，42(21):208-209.Ding H, Liu T, Zhai D M. Research on failure of cold stamping dies[J].Hot Working Technology,2013,42(21):208-209.
［6］王忠雷，赵国群.精密锻造技术的研究现状及发展趋势[J].精密成形工程，2009，1(1)：32-33.Wang Z L, Zhao G Q. Recent condition and developing trends of precise forging technology [J].Journal of Netshape Forming Engineering, 2009, 1(1):32-33.
［7］刘桂花，冯再新，于晓东，等.复杂盘类件塑性成形过程中的省力成形方法[J].锻压技术,2011, 36(5):1-4.Liu G H, Feng Z X, Yu X D, et al. Less loading method of complex disc components in plastic forming process [J].Forging & Stamping Technology, 2011，36 (5):1-4.
［8］许洪斌，谭剑锋.金属体积成形工艺及模具[M].北京：化学工业出版社，2007.Xu H B, Tan J F. Metal Bulk Forming Technology and Die[M].Beijing: Chemical Industry Press,2007.
［9］吴顺达.我国锻造行业模具与润滑现状及其发展方向[J].模具工业，2011，37(5)：5-11.Wu S D. Status of die and lubrication of forging industry in China and its development trend[J].Mould & Die Industry,2011,37(5)：5-11.
［10］殷燕芳.模具的摩擦与润滑[J].机械研究与应用，2007，20(1):9-10, 13.Yin Y F. Friction & lubrication of mould[J].Mechanical Research and Application,2007,20(1)：9-10,13.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】