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| 深孔变壁厚锥形件冷挤压工艺与模具设计 |
| Design of Cold Extrusion Process and Die Design for Tapered Parts with Deep Cavity and Inequal Wall Thickness |
| Received:December 27, 2010 Revised:July 10, 2011 |
| DOI： |
| 中文关键词: 反挤压模 锥形挤压件 双级卸料 正挤压模 |
| 英文关键词: backward extrusion die tapered extrusion part two-step stripping forward extrusion die |
| 基金项目: |
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| 中文摘要: |
| 深孔变壁厚锥形件需要3次挤压成形，给出了该零件冷挤压工艺和实用的模具结构，论述了反挤压工序件与成品正挤压模腔的关系，以及凸模和凹模设计。该模具采用伸缩式双级卸料装置，实现较大行程的卸料。 |
| 英文摘要: |
| The tapered parts with deep cavity and inequal wall thickness needed three extrusions. The cold extrusion process and a practical die structure for tapered part with deep cavity was presented. The connection of middle parts of backward extrusion and the forward extruding dies for the finished products was discussed. the punch and die were designed. There was a two-step stripping device which could be elongated and shortened on the die,so that long ejection stroke was achieved. |
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