【正文】 ....................................................................................... 7 沖壓工藝分析 ............................................................................................................. 7 計(jì)算毛坯尺寸 ................................................................................................... 7 計(jì)算拉深次數(shù) ................................................................................................... 8 ...................................................................................... 9 3. 工藝方案的確定 .................................................................................................................. 11 4. 確定排樣、裁板方案 .......................................................................................................... 13 5. 計(jì)算各工序壓力、選擇壓力機(jī) ............................................................................................ 14 ..................................................................................................... 14 ............................................................................................................ 14 ............................................................................................................ 14 ............................................................................................................ 14 ............................................................................................................ 15 ： ............................................................................................................ 15 拉深力 ........................................................................................................... 15 壓邊力 ........................................................................................................... 15 ： ........................................................................................... 16 ............................................................................................................ 16 ............................................................................................................ 16 頂件力 ........................................................................................................... 16 沖 mm11? 的孔 ......................................................................................................... 16 ............................................................................................................ 16 ............................................................................................................ 17 ............................................................................................................ 17 .......................................................................................................................... 17 翻邊力 ........................................................................................................... 17 頂件力 ........................................................................................................... 17 沖 ? 的孔 ....................................................................................................... 17 切邊 ......................................................................................................................... 18 壓力機(jī)的選擇 ........................................................................................................... 18 6. 模具設(shè)計(jì) ............................................................................................................................ 19 凸、凹模尺寸計(jì)算 .................................................................................................... 19 確定沖裁間隙 ................................................................................................. 19 落料凸模的刃口尺寸 ...................................................................................... 20 拉深凸模、凹模尺寸 ...................................................................................... 21 7. 磨具其他零件的選取和設(shè)計(jì) ................................................................................................ 24 ................................................................................................................ 24 蘭州交通大學(xué)畢業(yè)設(shè)計(jì)（論文） 4 ................................................................................................................ 24 導(dǎo)柱與導(dǎo)套 .....................................