锻压技术

高速冷滚打成形花键表面加工硬化试验

英文标题：Experiment on surface workhardening of spline by high speed cold roll beating

作者：徐红玉刘玉会卜敏崔凤奎

分类号：TH161

出版年,卷(期):页码：2017,42(3):165-169

摘要：

以渐开线花键为研究对象，进行了高速冷滚打成形工件的显微硬度和扫描电镜试验，分析了同一工艺参数下花键不同位置表层硬度随深度的变化趋势，花键的表面硬化程度和微观组织随不同工艺参数的变化规律。试验结果表明：同一工艺参数下，齿顶、分度圆和齿根的表层硬度均随着与齿面距离的增大总体趋于减小，基体硬度为238.5 HV，花键表面形成明显的加工硬化层，齿顶处表面硬度值最小，且硬化层最浅；齿根部分表面硬度略低于分度圆处的表面硬度，硬化层达到1.5 mm；成形花键的表面加工硬化程度，在同一转速下，随着进给量的增大而上升，在同一进给量下，随着转速的增大而下降。

For the involute spline, the microhardness and scanning electron microscope experiments of workpiece processed by high speed cold roll-beating were carried out. It was analyzed the variation trends of spline surface hardness in different positions with different depths with the same process parameter and the changes of spline surface hardening degree and microstructure with different process parameters. The experiment results show that the surface hardness of addendum, pitch and dedendum tends to reduce with the increase of distance from the tooth surface with different process parameters. The matrix hardness of workpiece is 238.5 HV, and the spline surface forms work-hardening layer. In the addendum, the hardness is the smallest,and the hardening layer is the shallowest. In the dedendum, the hardness is lower than that of the pitch, the harden layer is up to 1.5 mm. The spline surface hardening degree increases with the increase of feed rate at the same rotation speed, and decreases with the increase of rotation speed at the same feed rate.

基金项目：

国家自然科学基金资助项目（51475146，51475366）

徐红玉(1972-)，男，博士，教授刘玉会（1989-），女，硕士研究生

参考文献：

［1］KahnJetter Z L, Wright S. Finite element analysis of an involute spline[J]. Journal of Mechanical Design, 2000, 122(2): 239-244.
［2］吕耀峰, 崔凤奎, 杨建玺, 等. 冷滚轧渐开线花键成形原理及理论误差计算分析[J]. 组合机床与自动化加工技术, 2007, 34(5): 20-23.Lu Y F, Cui F K, Yang J X, et al. The forming theory and error calculating of cold rolling involute spline[J]. Combination Machine Tools and Automatic Processing Technology, 2007, 34 (5): 20-23.
［3］李玉玺, 李言, 杨明顺, 等. 滚珠丝杠冷滚打的齿形理论误差研究[J]. 兵工学报, 2015, 36(8): 1594-1600.Li Y X, Li Y, Yang M S, et al. Investigation of the tooth profile error based on the forming theory of balloscrew manufactured by cold rolling[J]. Acta Armamentarii, 2015, 36(8): 1594-1600.
［4］马群, 李言, 杨明顺, 等. 连续分度冷滚打机床滚打头结构改进[J]. 兵工学报, 2015, 36(8): 1587-1593.Ma Q, Li Y, Yang M S, et al. Structure improvement of rollbeating head for continuous indexing cold rollbeating machine[J]. Acta Armamentarii, 2015, 36(8): 1587-1593.
［5］崔凤奎, 朱文娟, 刘继国, 等. 高速冷滚打成形热力耦合模拟[J]. 河南科技大学学报, 2014, 35(1): 13-16.Cui F K, Zhu W J, Liu J G, et al. Thermo mechanical coupling simulation of high speed cold roll-beating[J]. Journal of Henan University of Science and Technology, 2014, 35(1): 13-16.
［6］张璐, 李言, 杨明顺, 等. 丝杠冷滚打成形过程金属流动规律研究[J]. 中国机械工程, 2012, 23(13): 1623-1628.Zhang L, Li Y, Yang M S, et al. Study on metal flowing of lead screw cold rollbeating forming[J]. China Mechanical Engineering, 2012, 23(13): 1623-1628.
［7］周子同, 陈志同, 蒋理科, 等. 钛合金TB6铣削加工硬化试验[J]. 北京航空航天大学学报, 2014, 40(1): 135-140.Zhou Z T, Chen Z T, Jiang L K, et al. Experiment on work hardening of milling TB6[J]. Journal of Beihang University, 2014, 40(1): 135-140.
［8］张为, 郑敏利, 徐锦辉，等. 钛合金Ti-6Al-4V车削加工表面硬化试验[J]. 哈尔滨工程大学学报, 2013, 34(8): 1052-1056.Zhang W, Zheng M L, Xu J H, et al. Surface work hardening experiment of titanium alloy Ti-6Al-4V[J]. Journal of Harbin Engineering University, 2013, 34(8): 1052-1056.
［9］崔凤奎, 谢亚飞, 董晓丹, 等. 高速冷滚打成形金属流动仿真分析[J]. 河南理工大学学报：自然科学版, 2014, 33(4): 467-471.Cui F K, Xie Y F, Dong X D, et al. Simulation analysis of metal flow in high-speed cold roll-beating[J]. Journal of Henan Polytechnic University：Natural Science, 2014, 33(4): 467-471.
［10］王晓强, 崔凤奎, 燕根鹏, 等. 40Cr冷滚打成形中位错密度变化研究[J]. 中国机械工程, 2013, 24(16)：2248-2256.Wang X Q, Cui F K, Yan G P, et al. Study on dislocation density change during cold rollbeating of 40Cr[J]. China Mechanical Engineering, 2013, 24(16)：2248-2256.
［11］崔凤奎. 高速精密冷滚打成形技术研究[D]. 西安: 西安理工大学, 2007.Cui F K. Research on High Speed Precision Cold Rolling Forming Technology[D]. Xi′an: Xi′an University of Technology, 2007.
［12］孙红云, 李俊, 孟庆格, 等. 加热速率对双相钢微观组织和烘烤硬化性能的影响[J]. 锻压技术, 2014, 39(4):115-121.Sum H Y, Li J, Meng Q G, et al. Effect of heating rates on microstructure and bake hardening behavior of DP steel[J]. Forging & Stamping Technology, 2014,39(4):115-121.

服务与反馈：

【文章下载】【加入收藏】