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目 錄
1 . 緒 論 ..............................................................................................................................1
1.1 選題背景...................................................................................................................1
. 1.2 課題相關(guān)調(diào)研 ........................................................................................................1
1.3 沖壓的概念、特點(diǎn)及應(yīng)用......................................................................................1
1.4 沖壓的基本工序及模具..........................................................................................2
1.5 沖壓技術(shù)的現(xiàn)狀及發(fā)展方向..................................................................................3
2 沖壓件工藝分析..............................................................................................................7
2.1 材料..........................................................................................................................7
2.2尺寸精度...................................................................................................................8
3 確定工藝方案 ...............................................................................................................10
4 主要工藝計(jì)算.................................................................................................................13
4.1排樣設(shè)計(jì)與計(jì)算 .....................................................................................................13
4.2 落料尺寸.................................................................................................................14
4.3 計(jì)算條料寬度與送料步距.....................................................................................17
4.4 壓力中心的確定.....................................................................................................17
4.5 拉深道次及各道次尺寸.........................................................................................18
4.5.1 由Φ87毛坯拉成內(nèi)徑Φ23.5......................................................................18
4.5.2由內(nèi)徑Φ23.5拉出內(nèi)徑Φ11.5的階梯.......................................................21
4.6 落料、拉深沖壓力.................................................................................................23
4.7 頂件力、推件力的計(jì)算.........................................................................................24
5 模具的技術(shù)要求及材料選用.........................................................................................26
5.1 模具的技術(shù)要求......................................................................................................26
5.2 模具材料的選用原則..............................................................................................26
6 模具設(shè)計(jì).........................................................................................................................26
6.1 落料、拉深復(fù)合模.................................................................................................28
6.1.1模具結(jié)構(gòu)..........................................................................................................28
6.1.2模具工件部分尺寸及公差計(jì)算 ...................................................................29
6.2 修邊沖孔模..............................................................................................................31
6.21模具結(jié)構(gòu)..........................................................................................................31
6,22模具工件部分尺寸及公差計(jì)算......................................................................32
6.3 切槽模.....................................................................................................................33
6.31模具結(jié)構(gòu)..........................................................................................................34
6.32模具工件部分尺寸及公差計(jì)算......................................................................34
6.4 翻邊模.....................................................................................................................36
6.41 模具結(jié)構(gòu).........................................................................................................36
6.42 模具工件部分尺寸及公差計(jì)算.....................................................................36
7 工作零件的加工工藝......................................................................................................39
8 模具的裝配與調(diào)試..........................................................................................................41
8.1 模具的裝配..............................................................................................................41
8.2 模具的調(diào)試..............................................................................................................42
總 結(jié) ....................................................................................................................................43
致 謝 ..................................................................................................................................44
參考文獻(xiàn)................................................................................................................................45