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加強(qiáng)筋板沖壓工藝與模具設(shè)計(jì)（開題報(bào)告）.doc

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加強(qiáng)筋板沖壓工藝與模具設(shè)計(jì)（開題報(bào)告）,畢業(yè)設(shè)計(jì)（論文）開題報(bào)告1、課題的目的及意義1.1.國(guó)內(nèi)外發(fā)展現(xiàn)狀沖壓是一種先進(jìn)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(duì)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(jì)初，美國(guó)福特汽車的工業(yè)化生產(chǎn)大大推動(dòng)了...
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