摘要
使用有限元软件对大模数直齿轮的温锻工艺进行了数值模拟,分析了直齿轮温锻工艺中的金属流动规律,发现大模数直齿轮温锻的主要缺陷为齿形填充不饱满,成形载荷过大。针对温锻工艺问题,引入约束分流的设计思想,对直齿轮温锻成形工艺进行了优化设计;模拟后发现通过改变模具的几何形状可改善金属的塑性流动,保证齿形充填完整。因此,提出了折线型凸模端面,并结合约束轴分流工艺,确定了合理的直齿轮温锻工艺。
The warm forging process of spur gear with big modulus was numerically simulated with the finite element software. And the metal flow role in the warm forging process of spur gear was analyzed. It is found that the major defects of spur gear with big modulus in warm forging are bad tooth filling and large forming load. Aiming at the problems of the warm forging process, introducing the design idea of constrained divided flow, the warm forging process of spur gear was optimized. It is found that after the simulation, the metal plastic flow can be improved through the change of die shape, which guarantees the metal filling in the comer of gear. Therefore, the broken line punch end surface was presented, and combining the constraint axis shunt process, the reasonable warm forging process of the spur gear was determined.
出处
《热加工工艺》
CSCD
北大核心
2014年第3期137-140,共4页
Hot Working Technology
基金
合肥工业大学2011年国家级大学生创新训练实验计划资助项目(111035918)
教育部科学技术研究重大项目(311025)
关键词
直齿轮
折线型凸模端面
约束分流
数值模拟
spur gear
broken line-shaped punch end surface
restrained split-flow
numerical simulation
