【正文】 die can be punching, blanking, bending, deep drawing, forming and other procedures which can be acplished with a single punchfrom the board expected the finished product of processes., thereby elimi nating the need for singleturnover process and the positioning process of each press, im proving the equipment utilization and labor productivity. Keywords: progressive die。 blanking。 utilization II 目錄 摘要 ............................................................................................................................................. I Abstract .....................................................................................................................................II 第 1 章緒論 ................................................................................................................................ 1 .......................................................................................................... 1 ............................................................................................... 1 沖壓工序分類 ....................................................................................................... 1 沖模的分類 ........................................................................................................... 2 沖壓現(xiàn)狀與發(fā)展方向 ....................................................................................................... 2 沖壓成型理論及沖壓工藝 ...................................................................................... 2 模具先進制造工藝及設(shè)備 ...................................................................................... 3 模具新材料及熱、表面處理 .................................................................................. 5 模具 CAD/CAM 技術(shù) ........................................................................................... 5 我國模具技術(shù)的發(fā)展狀況 ................................................................................................ 6 第 2 章零件經(jīng)濟性、工藝性分析 ............................................................................................ 8 沖裁件的形狀和尺寸 ....................................................................................................... 8 沖裁件的材料 .................................................................................................................. 8 第 3 章沖裁方案的擬定 ........................................................................................................... 9 沖裁工序的組合 .............................................................................................................. 9 沖裁順序的安排 ............................................................................................................ 10 沖裁工藝方案的擬定 ..................................................................................................... 10 第 4 章沖裁排樣設(shè)計 ............................................................................................................. 12 材料的合理利用 ............................................................................................................ 12 材料利用率 ......................................................................................................... 12 提高材料利用率的方法 ....................................................................................... 12 搭邊值得確定 ............................................................................................................... 13 排樣方法 ...................................................................................................................... 13 條料寬度與導(dǎo)料板間距離的計算 ................................................................................... 14 第 5 章沖裁力和壓力中心的計算 ......................................................................................... 16 沖裁力的計算 ............................................................................................................... 16 卸料力、推件力的計算 ................................................................................................. 17 壓力機公稱壓力的確定 ................................................................................................. 18 壓力中心的確定 ............................................................................................................ 19 第 6 章壓力機的選擇 ............................................................................................................. 21 設(shè)備類型 ...................................................................................................................... 21 設(shè)備規(guī)格 ...................................................................................................................... 22 第 7 章模具主要零件的設(shè)計 ................................................................................................. 24 沖裁模間隙 ................................................................................................................... 24 間隙的重要性 ..................................................................................................... 24 沖裁模間隙值的確定 ........................................................................................... 25 凸模與凹模刃口尺寸的確定 .......................................................................................... 27 凸、凹模刃口計算原則 ....................................................................................... 27 凸、凹模刃口尺寸的計算 .................................................................................... 28 凸模設(shè)計 ...................................................................................................................... 32 凸模的結(jié)構(gòu)形式 .................................................................................................. 32 凸模的長度 ......................................................................................................... 32 凸模的固定 ......................................................................................................... 33 小孔凸模的強度校核 .............