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I 目 錄 1 緒論 ..........................................................1 1.1 國內(nèi)模具的現(xiàn)狀和發(fā)展趨勢 ...........................................1 1.1.1 國內(nèi)模具的現(xiàn)狀 ....................................................................................................................1 1.1.2 國內(nèi)模具的發(fā)展趨勢 ............................................................................................................2 1.2 國外模具的現(xiàn)狀和發(fā)展趨勢 ...........................................3 1.3 冷沖壓模具的分類 ...................................................4 1.3.1 按沖壓工藝進(jìn)行分類 ...........................................................................................................4 1.3.2 按工序組合程度進(jìn)行分類 ....................................................................................................4 1.3.3 按上下模的導(dǎo)向方式進(jìn)行分類 ............................................................................................5 1.3.4 按導(dǎo)料或定位形式進(jìn)行分類 ................................................................................................5 1.4 翻邊接頭模具設(shè)計(jì)與制造方面 .........................................5 1.4.1 翻邊接頭模具設(shè)計(jì)的設(shè)計(jì)思路 ...........................................................................................5 1.4.2 翻邊接頭模具設(shè)計(jì)的進(jìn)度 ....................................................................................................6 2 落料沖孔復(fù)合模 ................................................7 2.1 沖壓工件的工藝分析 .................................................7 2.1.1 制件的總體分析 ....................................................................................................................8 2.1.2 制件的外形分析 ....................................................................................................................8 2.1.3 沖裁件的尺寸精度和表面粗糙度 ........................................................................................8 2.2 工藝方案的確定 .....................................................8 2.3 必要的工藝計(jì)算 .....................................................9 2.3.1 毛坯尺寸計(jì)算 ........................................................................................................................9 2.3.2 排樣設(shè)計(jì)與計(jì)算 ..................................................................................................................11 2.4 計(jì)算沖壓力和初選壓力機(jī) ............................................12 2.4.1 落料力計(jì)算 ..........................................................................................................................12 II 2.4.2 沖孔力計(jì)算 ..........................................................................................................................13 2.4.3 卸料力計(jì)算 ..........................................................................................................................13 2.4.4 推件力的計(jì)算 ......................................................................................................................13 2.4.5 總工序力計(jì)算 ......................................................................................................................13 2.4.6 初選壓力機(jī) ..........................................................................................................................14 2.4.7 壓力中心的確定 ..................................................................................................................14 2.5 模具總體結(jié)構(gòu)設(shè)計(jì) ..................................................14 2.5.1 模具類型設(shè)計(jì) ......................................................................................................................14 2.5.2 模具具體結(jié)構(gòu)設(shè)計(jì) ..............................................................................................................15 2.5.3 主要工作零部件設(shè)計(jì) ..........................................................................................................15 2.5.4 定位裝置的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................20 2.5.5 卸料裝置的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................21 2.5.6 推件裝置的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................22 2.5.7 支承固定零件的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..........................................................................................23 2.5.8 導(dǎo)向零件的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................24 2.5.9 緊固零件的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................24 2.6 壓力機(jī)的選用 ......................................................24 2.7 模具的裝配圖 ......................................................25 3 拉伸翻邊模 ...................................................28 3.1 拉伸工件的工藝分析 ................................................28 3.1.1 計(jì)算毛坯尺寸 ......................................................................................................................28 3.1.2 確定是否使用壓邊圈 ..........................................................................................................30 3.1.3 拉伸次數(shù)的確定 ..................................................................................................................30 3.1.4 排樣及相關(guān)計(jì)算 ..................................................................................................................31 3.2 計(jì)算沖壓力和初選壓力機(jī) ............................................31 3.2.1 壓邊力的計(jì)算 ......................................................................................................................31 III 3.2.2 拉深力的計(jì)算 ......................................................................................................................31 3.2.3 公稱壓力的計(jì)算 ..................................................................................................................32 3.2.4 翻邊力的計(jì)算 ......................................................................................................................32 3.2.5 推件力的計(jì)算 ......................................................................................................................32 3.2.6 工藝總壓力的計(jì)算 ..............................................................................................................32 3.2.7 初選壓力機(jī) ..........................................................................................................................32 3.2.8 壓力中心的確定 ..................................................................................................................33 3.3 模具總體結(jié)構(gòu)設(shè)計(jì) ..................................................33 3.3.1 模具類型設(shè)計(jì) ......................................................................................................................33 3.3.2 模具具體結(jié)構(gòu)設(shè)計(jì) ..............................................................................................................33 3.3.3 主要工作零部件設(shè)計(jì) ..........................................................................................................34 3.3.4 定位裝置的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................37 3.3.5 卸料裝置的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................37 3.3.6 推件裝置的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................37 3.3.7 支承固定零件的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..........................................................................................39 3.3.8 導(dǎo)向零件的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................40 3.3.9 緊固零件的設(shè)計(jì)與標(biāo)準(zhǔn)化 ..................................................................................................40 3.4 壓力機(jī)的選用 ......................................................40 3.5 模具的裝配圖 ......................................................41 4 總結(jié) .........................................................44 致 謝 ........................................................45 參考文獻(xiàn) .......................................................46