【正文】 .....................62 設(shè)計方案 .....................................................................................................................................6 零件的材質(zhì)分析 ...................................................................................................................7 支座工藝設(shè)計的內(nèi)容和要求 ...............................................................................................8 造型造芯方法的選擇 .........................................................................................................10 澆注位置的選擇與分型面的選擇 .....................................................................................10 澆注位置的選擇 .........................................................................................................10 分型面的確定 .............................................................................................................12 砂箱中鑄件數(shù)目的確定 .............................................................................................143 設(shè)計說明 ...................................................................................................................................15 工藝設(shè)計參數(shù)確定 .............................................................................................................15 最小鑄出的孔和槽 .....................................................................................................15 鑄件的尺寸公差 .........................................................................................................16 機械加工余量 .............................................................................................................17 鑄造收縮率 .........................................................................................................................17 起模斜度 .....................................................................................................................18 澆注溫度和冷卻時間 .................................................................................................19 砂芯設(shè)計 .............................................................................................................................19 芯頭的設(shè)計 .................................................................................................................20 砂芯的定位結(jié)構(gòu) .......................................................................................................20 芯骨設(shè)計 ...................................................................................................................21 砂芯的排氣 ...............................................................................................................21 澆注系統(tǒng)及冒口，冷鐵，出氣孔的設(shè)計 .........................................................................21 澆注系統(tǒng)的類型和應(yīng)用范圍 .....................................................................................21 確定內(nèi)澆道在鑄件上的位置、數(shù)目、金屬引入方向 .............................................22II / 29 決定直澆道的位置和高度 .................................................................................................22 計算內(nèi)澆道截面積 ...................................................................................................23 計算橫澆道截面積 ...................................................................................................23 計算直澆道截面積 ...................................................................................................24 冒口的設(shè)計 .................................................................................................................254 鑄造工藝裝備設(shè)計 ...................................................................................................................25 模樣的設(shè)計 .........................................................................................................................26 模樣材料的選用 .........................................................................................................26