中南大学学报（自然科学版）2017，Vol.48Issue(8)：1995-2001,7.DOI:10.11817/j.issn.1672-7207.2017.08.005
大模数冷挤压直齿轮冷整形方式的选择
The choice of cold precision sizing method for cold extrusion gear with big modulus
摘要
Abstract
In order to improve gear accuracy in cold precision sizing,an elastic plastic finite element model based on the measurement of extruded gear was built to simulate the cold precision sizing process.The stress and strain distributions of the gear,as well as the stress of toothed die with different methods of cold precision sizing were analyzed by numerical simulation.The rule of influence of cold precision sizing method on gear accuracy was obtained.The experiment of the spur gear cold precision sizing process was conducted and the generated data went through a paired sample t-test for significance analysis.The results show that the accuracy of cold extruded gear improves significantly by sizing only tooth face.The magnitude of tooth profile accuracy increases from 9 to 7 and the magnitude of gear direction precision increases from 10 to 8 after cold precision sizing.Practical results are consistent with the simulation results.关键词
大模数直齿轮/冷整形方式/齿轮精度/数值模拟Key words
spur gear with big modulus/cold precision sizing/gear accuracy/numerical simulation分类
矿业与冶金引用本文复制引用
梁强,周杰,朱姗姗,夏泽雨,刘正伟..大模数冷挤压直齿轮冷整形方式的选择[J].中南大学学报（自然科学版）,2017,48(8):1995-2001,7.基金项目
国家自然科学基金面上资助项目(51275543) （51275543）
重庆市科委应用开发(重大)项目(cstc2014yykfC70003)(Project (51275543) supported by the General Program of the National Natural Science Foundation of China （重大）
Project(cste2014yykfC70003) supported by the Chongqing Science and Technology Application Development Program) （cste2014yykfC70003）
