【正文】 Key words: sheet metal bending machine, hydraulic system, hydraulic transmission course design. 攀枝花學(xué)院學(xué)生設(shè)計（論文） 目 錄 目錄 摘 要 .............................................................................................................................. ABSTRACT ....................................................................................................................... I 1 任務(wù)分析 ................................................................................................................. 1 技術(shù)要求 ............................................................................................................................... 1 任務(wù)分析 ............................................................................................................................... 1 2 工況分析 ................................................................................................................. 3 運動分析 ............................................................................................................................... 3 負(fù)載分析 ............................................................................................................................... 3 確定液壓缸主要尺寸，編制液壓缸工況圖 ....................................................................... 5 ....................................................................................... 5 編制液壓缸工況圖 ................................................................................................................ 6 3 擬定液壓系統(tǒng)圖 ..................................................................................................... 9 制定基本方案， 擬定液壓系統(tǒng)圖 ........................................................................................ 9 4 液壓元件選型 .......................................................................................................... 10 液壓泵及其驅(qū)動電機的選擇 .............................................................................................. 10 閥類元件及輔助元件 .......................................................................................................... 10 油管元件 ............................................................................................................................. 11 油箱的容積計算 .................................................................................................................. 12 油箱的長寬高 ...................................................................................................................... 12 油箱地面傾斜度 .................................................................................................................. 13 吸油管和過濾器之間管接頭的選擇 .................................................................................. 13 過濾器的選取 ...................................................................................................................... 13 堵塞的選取 .......................................................................................................................... 13 空氣過濾器的選取 ............................................................................................................ 13 液位 /溫度計的選取 .......................................................................................................... 14 5 液壓系統(tǒng)性能的運算 ........................................................................................... 15 壓力損失和調(diào)定壓力的確定 ........................................................................................... 15 沿程壓力損失 ........................................................................................................... 15 壓力閥的調(diào)定值計算 .................................................................................................. 16 油液溫升的計算 ................................................................................................................. 16 快退時液壓缸的發(fā)熱量 ............................................................................................... 0 壓制時液壓缸的發(fā)熱量 ................................................................................................ 0 油箱的設(shè)計 ............................................................................................................................ 0 系統(tǒng)發(fā)熱量的計算 ........................................................................................................ 0 散熱量的計算 ............................................................................................................... 0 6 參考文獻(xiàn) ................................................................................................................. 2 攀枝花學(xué)院學(xué)生設(shè)計（論文） 任務(wù)分析 1 1 任務(wù)分析 技術(shù)要求 設(shè)計制造一臺立式板料折彎機，該機壓頭的上下運動用液壓傳動，其工作循環(huán)為：快速下降、慢速加壓（折彎）、快速退回。給定條件為： 折彎力 10N? 滑塊重量