高速冷滚打成形中滚滑摩擦热效应分析  

THERMAL EFFECT ANALYSIS OF ROLLING FRICTION IN HIGH SPEED COLD ROLL-BEATING FORMING

作　　者：李玉玺[1] 李言[1] 崔莅沐 肖继明[1] 崔凤奎[2] LI YuXi;LI Yan;CUI LiMu;XIAO JiMing;CUI FengKui(Faculty of Mechanical and Precision Instrument Engineering Xi,an University of Technology,Xi,an 710048,China;School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China)

机构地区：[1]西安理工大学机械与精密仪器工程学院,西安710048 [2]河南科技大学机电工程学院,洛阳471003

出　　处：《机械强度》2018年第6期1437-1442,共6页Journal of Mechanical Strength

基　　金：国家自然基金项目(51475146;51475366);陕西省教育厅重点实验室科学研究计划项目(12JS072);西安理工大学博士创新基金(207-002j1302)资助~~

摘　　要：高速冷打成形是一个多因素耦合作用下的复杂成形过程,其中由于滚滑摩擦产生的热效应将影响工件金属的流动性,进而对成形零件质量和性能产生影响。为了深入了解热效应引起的工件内部不均匀的温度场变化规律,进而选择合理的冷滚打成形参数,提高产品的成形质量,在冷滚打成形花键原理的基础上,分析了滚滑摩擦对冷滚打成形机理影响;建立了有限元仿真模型,仿真获得了滚滑摩擦产生的温度场随时间的变化规律,及其对成形应力、应变、金属流动和滚打力力的影响,为冷滚打成形精度控制提供参考。High-speed cold forming is a complex forming process coupling under multi factors,which has the rolling friction affecting the fluidity of the workpieee metal,and then affecting the quality and performance of the forming parts.In order to understand the variation of temperature field caused by thermal effect,then choose reasonable cold rolling forming parameters to improve produet forming quality,the influence of rolling friction is analyzed on the basis of cold rolling forming spline principle. The finite element simulation model is established,which can obtain the variation law of temperature field produced by roiling friction and its influence on forming stress,strain,metal flow and rolling force.It can be the provide reference for eold rollbeating forming precision control.

关 键 词：高速冷滚打 滚滑摩擦 热力耦合 热软化 

分 类 号：TG335.6[金属学及工艺—金属压力加工]