2476 彈簧支架級(jí)進(jìn)模設(shè)計(jì)及其制造工藝,彈簧,支架,級(jí)進(jìn)模,設(shè)計(jì),及其,制造,工藝 目 錄緒 論 ........................................................................................................................................................3第二章 沖壓件工藝分析 ..........................................................................................................................52.1 分析工件的技術(shù)要求 .......................................................................................................................52.1.1 加工表面的尺寸精度及尺寸基準(zhǔn) .......................................................................................62.1.2 主要加工表面的形位公差精度 ...........................................................................................62.1.3 表面質(zhì)量要求 .......................................................................................................................62.2 工件材料及機(jī)械性能 .......................................................................................................................62.2.1 工件材料化學(xué)成分對(duì)塑性的影響 .......................................................................................62.2.2 工件材料的機(jī)械性能 ...........................................................................................................62.3 零件的結(jié)構(gòu)工藝性分析 ...................................................................................................................72.3.1 沖孔部分工藝性要求 ...........................................................................................................82.3.2 翻邊部分工藝性要求 ...........................................................................................................9第三章 工藝方案確定 .............................................................................................................................103.1 工藝方案的提出 .............................................................................................................................103.2 工件生產(chǎn)工序的確定 .....................................................................................................................113.3 模具定位零件與卸料零件的選擇 .................................................................................................113.3.1 定位零件的選擇 .................................................................................................................113.3.2 卸料零件的選擇 .................................................................................................................113.3.3 出料方式的選擇 .................................................................................................................11第四章 排樣設(shè)計(jì) ......................................................................................................................................134.1 材料利用率 .....................................................................................................................................134.2 排樣方法 .........................................................................................................................................144.3 搭邊值的選用和條料的選用及步距的確定 .................................................................................154.3.1．搭邊值的選用 ..................................................................................................................154.3.2．條料寬度的確定 ..............................................................................................................164.3.3．步距的確定 ......................................................................................................................164.4 材料利用率的確定 .........................................................................................................................17第五章 模具主要受力分析計(jì)算 ..........................................................................................................185.1 翻邊力的計(jì)算 .................................................................................................................................185.2 沖壓力的計(jì)算 .................................................................................................................................205.2.1 沖裁力的計(jì)算 .....................................................................................................................205.2.2 整形壓力的計(jì)算 .................................................................................................................205.2.3 卸料力與推件力的計(jì)算 .....................................................................................................21第六章 壓力機(jī)噸位選擇 ........................................................................................................................236.1 模具壓力中心的確定 .....................................................................................................................236.2 壓力機(jī)噸位選擇 .............................................................................................................................236.2.1 沖壓設(shè)備類型的選擇 ........................................................................................................236.2.2 確定壓力機(jī)設(shè)備的規(guī)格 .....................................................................................................24第七章 模具工作部分設(shè)計(jì)計(jì)算 ..........................................................................................................267.1 沖裁間隙 .........................................................................................................................................267.1.1 沖裁間隙對(duì)沖裁件質(zhì)量的影響 .........................................................................................267.1.2 間隙對(duì)模具壽命的影響 ....................................................................................................277.1.3 對(duì)沖裁力、卸料力的影響 ................................................................................................287.2 合理間隙的選用 .............................................................................................................................297.2.1 理論計(jì)算法 .........................................................................................................................297.2.2 查表選取法 .........................................................................................................................307.3 模具刃口尺寸的計(jì)算 ....................................................................................................................307.3.1 計(jì)算原則 .............................................................................................................................317.3.2 計(jì)算方法 ...............................................................................................................................317.4 級(jí)進(jìn)模的各個(gè)工位沖裁凸、凹模刃口尺寸計(jì)算 .........................................................................327.4.1 第一工位沖孔模刃口尺寸計(jì)算 .........................................................................................327.4.2 第二工位處翻邊模刃口尺寸計(jì)算 .....................................................................................347.4.3 第三工位沖孔整形凸、凹模刃口尺寸計(jì)算 .....................................................................347.4.4 第四工位處沖孔小凸、凹模刃口尺寸計(jì)算 .....................................................................357.4.5 第五工位處落料模具刃口尺寸設(shè)計(jì)計(jì)算 .........................................................................36第八章 模具結(jié)構(gòu)設(shè)計(jì)和主要零、部件設(shè)計(jì) ....................................................................................388.1 模具閉合高度的確定 .....................................................................................................................388.2 模架的選用 .....................................................................................................................................398.3 凹模周界的確定 .............................................................................................................................408.4 模座及導(dǎo)套的選取 .........................................................................................................................408.5 模柄的選用 .....................................................................................................................................418.6 沖裁、翻邊凸、凹模結(jié)構(gòu)設(shè)計(jì) .....................................................................................................418.6.1 模具材料選擇與熱處理 .....................................................................................................418.6.2 CrWMn 鋼的性能 ................................................................................................................418.6.3 各凸模、凹模的固定形式的設(shè)計(jì) .....................................................................................428.6.4 凹模刃口形式的確定 .........................................................................................................428.6.5 凹模外形和尺寸的確定 .....................................................................................................44第九章 繪制模具裝配圖、零件圖及編寫設(shè)計(jì)說明書 ...............................................................45總結(jié) ...............................................................................................................................................................46參考文獻(xiàn) ......................................................................................................................................................47總結(jié) 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