【正文】 提出改進(jìn)措施。在盒形零件的實(shí)際生產(chǎn)中，可根據(jù)試模結(jié)果調(diào)整凸、凹模的圓角半徑、間隙大小和壓邊力，從而消除制件缺陷。 The boxshaped parts。 Mold design III 目 錄 1 緒論 ...................................................................................................................................... 1 沖壓工藝的發(fā)展優(yōu)勢 ............................................................................................... 1 沖壓成形的主要方法 ............................................................................................... 1 沖壓成形缺陷 ........................................................................................................... 2 沖壓成形的設(shè)備 ....................................................................................................... 3 沖壓加工設(shè)備 ................................................................................................ 3 沖壓加工模具 ................................................................................................ 4 模具設(shè)計(jì)的研究方向 ............................................................................................... 4 沖壓模具的發(fā)展趨勢 ............................................................................................... 5 2 設(shè)計(jì)課題及分析 .................................................................................................................. 6 設(shè)計(jì)課題 ................................................................................................................... 6 工藝性分析 ............................................................................................................... 6 材料性能分析 ................................................................................................ 6 精度和表面粗糙度分析 ................................................................................ 6 結(jié)構(gòu)工藝性分析 ............................................................................................ 6 工藝方案的選擇 ....................................................................................................... 7 3 工藝計(jì)算 .............................................................................................................................. 8 毛坯尺寸的計(jì)算 ....................................................................................................... 8 修邊余量的確定 ............................................................................................ 8 毛坯尺寸的確定 ............................................................................................ 8 拉深次數(shù)的確定 ..................................................................................................... 10 矩形盒拉深 .................................................................................................. 10 圓筒形拉深 ...................................................................................................11 排樣形式和材料利用率 ......................................................................................... 12 排樣形式的確定 .......................................................................................... 12 搭邊值的確定 .............................................................................................. 13 材料利用率的計(jì)算 ...................................................................................... 14 沖壓力計(jì)算 ............................................................................................................. 15 落料工藝力 .................................................................................................. 15 矩形盒拉深工藝力 ...................................................................................... 16 圓筒形拉深工藝力 ...................................................................................... 17 沖孔工藝力 .................................................................................................. 17 IV 壓力中心的確定和壓力機(jī)的預(yù)選 ......................................................................... 18 壓力中 心的確定 .......................................................................................... 18 壓力機(jī)的預(yù)選 .............................................................................................. 18 4 模具設(shè)計(jì) ............................................................................................................................ 18 模具類型及結(jié)構(gòu)形式的比較選擇 ......................................................................... 19 凸、凹模刃口尺寸計(jì)算 ......................................................................................... 19 落料 .............................................................................................................. 19 矩形盒形拉深 .............................................................................................. 21 圓筒形拉深 .................................................................................................. 23 沖孔 .............................................................................................................. 24 模具主要零部件的設(shè)計(jì) ......................................................................................... 25 落料拉深正裝式復(fù)合模 .............................................................................. 25 圓筒形拉深模 .............................................................................................. 35 倒裝式?jīng)_孔模 .............................................................................................. 42 模具裝配圖 ............................................................................................................. 48 落料拉深正裝式復(fù)合模裝配圖 .................................................................. 49 圓筒形拉深模 .............................................................................................. 50 倒裝式?jīng)_孔模 .............................................................................................. 50 5 壓力設(shè)備的選擇 ................................................................................................................ 51 6 結(jié)束語 .......