加強筋板沖壓工藝與模具設(shè)計（開題報告）.doc
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加強筋板沖壓工藝與模具設(shè)計（開題報告）,畢業(yè)設(shè)計（論文）開題報告1、課題的目的及意義1.1.國內(nèi)外發(fā)展現(xiàn)狀沖壓是一種先進的金屬加工方法。它是建立在金屬塑性變形的基礎(chǔ)上，利用模具和沖壓設(shè)備對板料施加壓力，使板料產(chǎn)生塑性變形或分離，從而獲得一定形狀、尺寸和性能的零件[1]。沖壓技術(shù)的真正發(fā)展，開始于汽車的工業(yè)化生產(chǎn)。20世紀初，美國福特汽車的工業(yè)化生產(chǎn)大大推動了...
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