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机械 基于 cadcae 桶形件 变压 冲压 成形 工艺 研究 钻研 cad 图纸

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机械基于CADCAE的桶形件变压边力冲压成形工艺研究带CAD图纸,机械,基于,cadcae,桶形件,变压,冲压,成形,工艺,研究,钻研,cad,图纸

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南京理工大学泰州科技学院毕业设计说明书(论文)作 者:王敏佳学 号：0501510140系部:机械工程系专 业:机械工程及自动化题 目:基于CAD/CAE桶形件的变压边力冲压成形工艺设计高级工程师张卫 指导者： 评阅者： 2009 年 6 月毕业设计说明书（论文）中文摘要随着成形加工技术的广泛应用，板料拉深工艺质量控制成为目前冲压技术研究的热点。起皱和断裂是板料成形过程中的主要失效形式，合理控制冲压成形过程中的压边力，可以消除这些缺陷，提高成形性能。本文以桶形件的成形为例，采用CAE软件 Dynaform对变压边力控制的成形工艺进行了数值模拟计算，最终得到了先增恒定后减是合适的压边力的变化曲线，并进行了模拟实验验证，极大的提高板料的拉深性能。关键词 桶形件拉深工艺 变压边力 CAE毕业设计说明书（论文）外文摘要Title Design of the Variable Blank Holding Force of Cup Part Drawing Based upon CAD/CAE AbstractAlong with the widely application of the forming technology, controlling of the drawing quality of the sheet metal has been becoming the focus of the stamping technology.In general, the predominant failure modes in stamping of sheet metal parts are wrinkling and fracture. These defects may be eliminated by manipulating the blank-holder forces appropriately. In this paper, using cup part drawing as an example, by the aid of the finite element method software DYNAFORM, numerical simulations on different variable blank-holder force load curves have been carried out with CAE. At last,increase-keep-reduce is found as the appropriate optional load curve of a cup part drawing. Results are also validated by simulation tests. The drawing performance could be greatly improved.Keywo