摘要
在直齿轮冷锻传统工艺方案的基础上,给出了一种新工艺方案,即将凸模端面设计成“■”形,凹模型腔底面设计成“■”形。采用有限单元法,通过对数值模拟中模型建立、网格自适应、重划分与局部细化和求解及收敛控制等技术问题进行处理,完成了直齿轮的整个成形过程的三维仿真,并提取应力、应变及速度场等信息来分析金属变形规律。最后,针对数值模拟用工业纯铅进行物理实验。实验结果表明,数值模拟与物理实验具有良好一致性,为新方案的优化设计奠定了基础。
On the base of traditional solution of cold forging of spur-gear, a novel processing solution is given, which designs the side surface of male die by the shape (∨∧) and the side surface of female die by the shape (∧).With FEM, through conducting model construction, mesh auto-adaptation, re-meshing and local refine and solve and conversion control, the 3D simulation of the whole forming process is finished. Stress, strain and velocity field data are extracted to analyze metal deformation rule. Finally, physical experiment is conducted with industrial pure lead to verify numerical simulation. It shows that numerical simulation has good agreement to physical experiment. It provides a foundation to optimized design.
出处
《模具技术》
2005年第6期3-6,共4页
Die and Mould Technology
基金
安徽省自然科学基金资助项目(03044105)
关键词
直齿轮
冷锻
数值模拟
物理实验
spur-gear
cold forging
numerical simulation
physical experiment