三种模具形式下直齿轮温锻精密成形研究-应用昆虫学报.PDF

上半月出版 Casting Forging Welding 金属铸锻焊技术 三种模具形式下直齿轮温锻精密成形研究 谢晋市 陈文琳 沙奔 唐涛 渊合肥工业大学材料科学与工程学院袁安徽合肥230009 冤 摘 要院选取固定凹模柱塞模式尧固定凹模约束 流模式和浮动凹模约束 流模式3 种不同模具方案袁对直齿轮 温锻成形过程进行数值模拟遥分析3 种模式下齿轮的成形效果尧等效应变 布和成形载荷等信息袁确定了改善充填性和 降低工作载荷的最佳工艺方案遥对最优的方案进行工艺实验验证袁实验结果与模拟结果基本吻合袁从而为 齿轮温锻成 形工艺的实用化提供了一定的理论依据遥 关键词院直齿圆柱齿轮曰温锻成形曰精密成形曰数值模拟 中图分类号院TG376.3 文献标识码院A 文章编号院 Precision Forming of Spur Gear Warm Forging Under Three Modes of Dies XIE Jinshi, CHEN Wenlin, SHA Ben, TANG Tao (School of Materials Science and Engineering, Hef ei Univers ity of Technology, Hef ei 230009, China) Abstract 院The warm forging of spur gear was simulated by three modes of die which were upended forging in fixed cavity die, restrained divided flow in fixed cavity die and restrained divided flow in floating cavity die. Through the analysis of filling effect, the effective strain fields and the load, the optimized processes of improving filling and reducing load were determined. The optimal process was experimented and the simulation was in agreement with experimental results. So the certain theory guidance is provided for the application of the process Key words 院spur gear; warm forging; precision forming; numerical simulation 直齿圆柱轮的精密成形由于不允许有拔模斜 1 工艺方案的确定 度尧 型腔角隙处难以充满尧 变形最后阶段成形载荷 根据 齿圆柱齿轮的成形特点袁 确定以下3 种 大尧模具寿命低等缺点袁使得 齿轮精锻的应用还存 [1-2] 直齿圆柱齿轮精锻成形工艺方案院 在较大困难 遥 为了降低直齿圆柱齿轮成形力袁改 ( 1) 固定凹模柱塞锻造模式 齿轮冲挤-镦挤 善金属在齿形型腔角隅的充填性袁很多研究采用温 [3-4] 成形