畢業(yè)設(shè)計(jì) 撥叉C加工工藝及夾具設(shè)計(jì)（含銑鉆2套夾具設(shè)計(jì)）
論文說明書共47頁，字?jǐn)?shù)總計(jì)：18046
資料簡(jiǎn)介：
機(jī)械加工工藝過程卡片.dwg
機(jī)械加工工藝卡片.dwg
A1-拉刀零件圖.dwg
A1-鉆孔夾具體.dwg
A1-鉆孔夾具裝配圖.dwg
A1-銑槽夾具體.dwg
A1-銑槽夾具裝配圖.dwg
文獻(xiàn)綜述.doc
封面.doc
目錄.doc
畢業(yè)設(shè)計(jì)說明書-撥叉C加工工藝及夾具設(shè)計(jì).doc
目 錄

摘要…………………………....………………….……………………...Ⅰ
ABSTRACT.....................................................................................................Ⅱ

1 緒論..........................................................................................................3
2 撥叉C的分析.............................................................................................4
2.1撥叉C的作用...........................................................................................4
2.2撥叉C的工藝分析.....................................................................................4
2.3撥叉C的工藝要求.....................................................................................4
2.4毛坯的選擇..............................................................................................5
2.5 本章總結(jié)................................................................................................5
3 工藝規(guī)程設(shè)計(jì).............................................................................................6
3.1加工工藝過程...........................................................................................6
3.2確定各表面加工方案..................................................................................6
3.2.1選擇加工方法時(shí)，需考慮的因素.............................................................6
3.2.2面的加工...........................................................................................6
3.2.3孔的加工...........................................................................................7
3.2.4槽的加工...........................................................................................7
3.3確定定位基準(zhǔn)...........................................................................................7
3.3.1粗基準(zhǔn)的選擇.....................................................................................7
3.3.2精基準(zhǔn)選擇的原則...............................................................................8
3.4工藝路線的擬訂........................................................................................8
3.4.1工序的合理組合..................................................................................8
3.4.2工序的集中與分散...............................................................................9
3.4.3加工階段的劃分................................................................................10
3.4.4加工工藝路線方案的比較....................................................................11
3.5撥叉C的偏差，加工余量，工序尺寸及毛坯尺寸的確定.......................................12
3.5.1毛坯的結(jié)構(gòu)工藝要求..........................................................................12
3.5.2撥叉C的偏差計(jì)算.............................................................................13
3.6確定切削用量及基本工時(shí)（機(jī)動(dòng)時(shí)間）..........................................................14
3.7時(shí)間定額計(jì)算及生產(chǎn)安排..........................................................................22
3.7.1鉆預(yù)制孔.........................................................................................22

3.7.2鉆預(yù)制孔.........................................................................................23
3.7.3拉 25H7內(nèi)花鍵................................................................................23
3.7.4粗、精銑18H11底槽........................................................................................23
3.7.5粗、精銑上端面...............................................................................................24
3.7.6鉆、攻2-M8螺紋孔.........................................................................................25
3.8 本章總結(jié)..............................................................................................................26
4 專用夾具設(shè)計(jì)..........................................................................................................27
4.1銑槽夾具設(shè)計(jì)........................................................................................................27
4.1.1研究原始質(zhì)料.................................................................................................27
4.1.2定位基準(zhǔn)的選擇..............................................................................................27
4.1.3夾具方案的設(shè)計(jì)選擇.......................................................................................27
4.1.4切削力及夾緊分析計(jì)算...................................................................................27
4.1.5誤差分析與計(jì)..