【正文】 ................. 8 材料分析 ........................................................................................................................ 8 分析零件圖 ..................................................................................................................... 8 、沖壓加工的經(jīng)濟(jì)性分析 ....................................................................................... 9 、沖壓件的工藝性分析 ......................................................................................... 10 毛坯高度 ....................................................................................................................... 10 確定沖壓件的總體工藝過程 ...........................................................................................11 、選擇沖壓基本工序 ............................................................................................ 12 、確定沖壓次數(shù)和沖壓順序 .................................................................................. 12 、工序的組合方式 ................................................................................................ 13 第 3章 計(jì)算沖壓力及確定壓力中心 .................................................................................. 15 計(jì)算沖壓力 ................................................................................................................... 15 沖裁力的計(jì)算 ...................................................................................................... 15 ..................................................................................................... 15 確定壓力中心 ............................................................................................................... 15 拉深工藝力的計(jì)算 ......................................................................................................... 16 . 壓邊力的計(jì)算 ................................................................................................... 16 ．拉深力的計(jì)算 ................................................................................................... 17 ............................................................................................................ 18 、壓力機(jī)類型的選擇 ............................................................................................ 18 第 4章 模具刃口尺寸計(jì)算 .................................................................................................. 19 沖裁模刃口尺寸計(jì)算的基本原則 ................................................................................... 19 確定制件尺寸公差 ........................................................................................................ 19 計(jì)算沖孔凸凹模刃口尺寸 ............................................................................................... 21 計(jì)算拉深凸凹模刃口尺寸 ............................................................................................... 22 凹模圓角半徑 凸模圓角半徑 ................................................................................. 23 棘塊凸凹模尺寸公差標(biāo)注 ............................................................................................... 25 第 5章 模具總體結(jié)構(gòu)設(shè)計(jì) .................................................................................................. 27 模具類型 ...................................................................................................................... 27 操作與定位方式 ............................................................................................................ 28 卸料與出件方式 ............................................................................................................ 28 模架類型及精度 ............................................................................................................ 29 第 6章 模具零件設(shè)計(jì) .......................................................................................................... 31 拉深凹模設(shè)計(jì) ............................................................................................................... 31 、 沖孔凹模洞口形狀的選擇 .................................................................................. 31 、沖孔凹模的外形尺寸 ......................................................................................... 31 、凹模的固定方法 ................................................................................................ 32 、凹模的主要技術(shù)要求 ......................................................................................... 32 沖孔凸模設(shè)計(jì) ............................................................................................................... 33 目錄 2 凸模形式 ............................................................................................................. 33 凸模長度 ............................................................................................................. 33 、沖孔凸模結(jié)構(gòu) ................................................................................................... 33 凸模固定板 .................................................................................................................... 34 模架選用 ....................................................................................................................... 34 模柄 .............................................................................................................................. 35 第 7章 壓力機(jī)的校核 .......................................................................................................... 37 工稱壓力 ...................................................................................................................... 37 滑塊行程 ....................................................................................................................... 37 滑塊行程次數(shù) ................................................................................................................ 37 壓力機(jī)工作臺(tái)面才尺寸 .................................................................................................. 37 滑塊模柄孔尺寸 ............................................................................................................. 37 閉合高度 ..........................