汪金保,刘华,孙红星,等.大直径带毂直齿轮冷精密成形数值模拟及工艺分析[J].精密成形工程,2014,6(6):104-110,121.
WANG Jin-bao,LIU Hua,SUN Hong-xing,et al.Numerical Simulation and Process Analysis of Cold Precision Forging for Large-diameter Spur Gears with Hub[J].Journal of Netshape Forming Engineering,2014,6(6):104-110,121. |
| 大直径带毂直齿轮冷精密成形数值模拟及工艺分析 |
| Numerical Simulation and Process Analysis of Cold Precision Forging for Large-diameter Spur Gears with Hub |
| 投稿时间：2014-09-25 修订日期：2014-11-10 |
| DOI：10.3969/j.issn.1674-6457.2014.06.017 |
| 中文关键词: 带毂直齿轮 冷精锻 分流 数值模拟 多工步 |
| 英文关键词: spur gear with hub cold precision forging divided flow numerical simulation multiple steps |
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| 中文摘要: |
| 目的 研究大直径带毂直齿轮冷精密成形新工艺。方法 根据大模数大直径带毂直齿轮结构特点,提出了冷精密成形的难点和解决基本方法。基于分流减压和多工步成形原理,提出了3种可行工艺方案。采用Deform 软件对工艺方案进行数值优化模拟,分析了方案二锻件成形过程的速度矢量、温度、应力和模具应力,阐述了成形原理。结果 采用优化的新工艺可以减小载荷降低模具应力,齿形金属充填饱满。结论 巧妙的分流面设计使大直径带毂直齿轮冷精密成形成为可能,新工艺能够为生产实践提供指导意义。 |
| 英文摘要: |
| Objective To study the new cold precision forging process of large-diameter spur gear with hub. Methods Based on the geometric feature of large module and large-diameter spur gear with hub, difficulties in cold precision forming and the corresponding solving methods were proposed. Based on the principle of distributary and decompression and the multi-step forming, three feasible technology schemes were put forward. The processes were numerically simulated using Deform-3D, different process schemes of different stages were analyzed. Further, the velocity vector, temperature, equivalent stress and die stress of scheme 2 were analyzed, and the forming principle was explained. Results The new optimal process could reduce the load and the die stress, and the tooth-shaped metal was fully filled. Conclusion The ingenious design of flow diversion face makes the cold precision forming of large-diameter spur gears with hub possible, and the new process can provide guidance for production practice. |
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