直齿轮预制分流孔-终锻分流成形  

Precision forging of spur gear by preforming divided flow hole and final forging

作　　者：杨程[1] 张玉婷[1] 张立[1] 梁凡[1] 赵升吨[2] 

机构地区：[1]西安建筑科技大学冶金工程学院,西安710055 [2]西安交通大学机械工程学院,西安710049

出　　处：《塑性工程学报》2015年第4期21-25,38,共6页Journal of Plasticity Engineering

基　　金：国家重大科技专项资助项目(2011ZX04016-081-03);陕西省自然科学基金资助项目(2012JM7019);大学生创新创业资助项目(201410703029)

摘　　要：为降低直齿轮精锻成形载荷,提高锻件精度和模具寿命,文章在对闭式锻造成形载荷影响因素分析的基础上,提出在保证齿形充填的同时对中心部位分流降压的成形思路。设计了直齿轮预锻预制分流孔、终锻分流成形的工艺和装置,并采用有限元软件和实验方法分析了该工艺对金属流动和成形载荷的影响。结果表明,该工艺能够通过控制坯料在模腔中的流动,在较小的成形载荷下获得充填完好的锻件。In order to reduce the precision forging load of spur gears and improve the dimensional accuracy of the forged part and tool life, a forming method of spur gear was put forward based on the analysis of the influence on load in closed die forging, by which the teeth were filled well and the divided flow hole was made in the preforming to reduce final forging load. The new form- ing process and die-sets were developed, and a divided flow hole was formed by pre-forging and it was benefit to reducing the final forging load. The influence of new process on the metal flow and load requirements was studied through finite element simulation and experiment. The results show that the metal flow can be controlled by the special design, and the well-shaped product can be forged successfully using a lower forging load than that of conventional forging method.

关 键 词：直齿轮 精锻 分流 

分 类 号：TG316[金属学及工艺—金属压力加工]