terrace die

Failure Analysis of the Cold Extrusion Terrace Die to Improve its Survice Life

冷挤压凸模失效分析与寿命的提高

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Do a research of ten kinds of failure forms of a cold extruding punch terrace die for a smelting steeliness automobile piston.

采用疲劳强度设计理论和最优化设计理论相结合的方式探讨多层压配组合冷挤压凹模的更为合理、有效的设计方法。

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The terrace die part of this die is made up of fixed terrace die and active flexible terrace die, which can solve the difficulty in emerging the part after part forming.

该模具的凸模部分由固定凸模和可伸缩的活动凸模组成，解决了零件成形后出件难的问题；

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There is a located groove on the flanging concave die, which solves the interferential problem with piercing terrace die, it uses nitrogen cylinder to adjust the pressure on material, as the results, the die structure is simplified, and the productive efficiency gets improved.

翻边凹模设有让位槽，解决了其与冲孔凸模干涉的问题；使用了氮气缸来调节压料力，简化了模具结构，提高了生产效率。

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The blank deformation during the terrace die extruding in inverted extrusion is studied by using laser moire method on different equipment.

本文采用激光云纹法，在不同设备上研究了反挤压时，凸模挤入阶段的毛坯变形机构；

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