Abstract:

According to shape features of the automobile clutch hub under research, an entire process flow was designed, including blanking, deep-drawing, bulging, stamp-cold forging hybrid process, piercing and trimming. The bulging process was designed to form circumferential slots distributing around the clutch hub evenly and the stamp-cold forging hybrid process was designed to gain variable thickness. A particular emphasis was put on introducing bulging process and the hybrid process. FEM simulation software, DEFORM-3D, was employed for the simulation of the entire process. The simulation results demonstrate that the bulging process can form circumferential slots fully and precisely, and the stamping-cold forging hybrid process is successful in forming parts with variable thickness.

Key words: automobile clutch hub, bulging process with several separated outer dies, stamping-cold forging hybrid process, FEM simulation

摘要：

针对所研究的离合器衬套的特点，设计了整个工艺流程，包括落料、拉深、胀形、冲锻复合成形、冲孔和修边，其中通过多模块胀形工艺成形零件周向均布的36个齿槽，通过冲锻复合成形工艺实现零件底部的壁厚变化，重点分析了胀形工艺和冲锻复合工艺的实现过程。采用有限元软件DEFORM-3D模拟整个工艺过程，模拟结果表明：胀形工艺能够完整、准确地成形出零件周向均布的齿槽，冲锻复合成形工艺成功实现了零件底部壁厚的变化，整个工艺流程切实可行。
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关键词: 汽车离合器衬套；多模块胀形工艺；冲锻复合工艺；有限元模拟