【正文】 tment and exercise the ability of solve the question independently . Key Words: Stamping forming,Mold design,Machining III 目 錄 摘 要 ......................................................................................................................................... I Abstract.......................................................................................................................................II 目 錄 ...................................................................................................................................... III 1 前言 ............................................................................................................................ 6 模具的簡(jiǎn)介 ................................................................................................................ 7 沖壓的概念及其優(yōu)點(diǎn) .............................................................................................. 7 課題國(guó)內(nèi)外現(xiàn)狀 ......................................................................................................... 8 未來沖壓模具制造技術(shù)發(fā)展趨勢(shì) ........................................................................... 10 2 沖壓件工藝分析 ........................................................................................................ 11 沖壓件材料分析 ....................................................................................................... 11 沖壓件結(jié)構(gòu)工藝性及分析 .................................................................................... 12 確定工藝方案模具結(jié)構(gòu)類型 ................................................................................ 13 定位裝置 ............................................................................................................ 15 卸料裝置 .......................................................................................................... 15 導(dǎo)向裝置 ............................................................................................................ 15 3 工藝計(jì)算 ...................................................................................................................... 15 沖壓件展開尺寸計(jì)算 ............................................................................................... 15 彎曲中性層位置的確定 ....................................................................................... 16 彎曲件坯料尺寸的計(jì)算 ....................................................................................... 16 材料的規(guī)格選擇 ....................................................................................................... 17 排樣圖的設(shè)計(jì)與利用率的計(jì)算 ............................................................................... 18 排樣圖的設(shè)計(jì) ....................................................................................................... 18 排樣圖的利用率的計(jì)算 ....................................................................................... 21 沖壓工藝力的計(jì)算 ................................................................................................... 22 ． 1沖壓力 ................................................................................................................. 22 翻邊部分的翻邊力計(jì) 算： ............................................................................................. 22 IV 4 沖孔落料模的主要零部件設(shè)計(jì) ................................................................................ 23 孔凸模的設(shè)計(jì) .................................................................................................................... 23 凸模長(zhǎng)度計(jì)算 ................................................................................................................. 25 承壓應(yīng)力校驗(yàn) ................................................................................................................. 25 落料凸模設(shè)計(jì) ................................................................................................................... 26 凸模承壓力校核 ： ......................................................................................................... 26 抗縱向彎曲應(yīng)力的校核： ............................................................................................ 27 切斷凸模固定端面的壓力 ............................................................................................ 27 凸、凹模間隙 ........................................................................................................ 28 凹模的結(jié)構(gòu)形式 .................................................................................................... 28 凸模的設(shè)計(jì) .............................................................................................................. 29 5 沖孔落料模輔助零件設(shè)計(jì) ........................................................................................ 32 擋料銷 .................................................................................................................... 32 導(dǎo)料板 ....................................................................................................................... 32 卸料板 ....................................................................................................................... 32 導(dǎo)向零件 ................................................................................................................ 33 連接與固定零件 .................................................................................................... 34 6 沖孔落料模壓力機(jī)的選擇 ........................................................................................ 35 7 壓筋切舌模設(shè)計(jì)計(jì)算 ................................................................................................ 36 彎曲力的計(jì)算 .................................................................................................... 36 壓筋切舌模壓力機(jī)的選擇 .................................................................................... 37 8 壓筋切舌模成形件尺寸的確定 ................................................................................ 37 凸、凹模圓角半徑 ................................................................................................ 37