【正文】 rking ,chose and designed two sets of typical model of tool machine tongs,designed the tongs of drilling the oil bore and designed the tongs of the milling mainly includes among them:the position project and the pressure designed,the cet degree design,two sets of wrok principles of tongses and what we must be notice in the process of the piston the analysis and argument,the arts and crafts design and the tongs design of the piston is viable. Keywords : Piston， Working procedure， Machine tongs， Manufacture process technology攀枝花學(xué)院本科 畢業(yè)設(shè)計(jì)（論文） 目錄 I 目 錄 摘要 .................................................................................... II ABSTRACT ............................................................................... II 1 緒論 ................................................................................. 1 本課題的研究意義，國(guó)內(nèi)外研究現(xiàn)狀、水平和發(fā)展趨勢(shì) .......................... 1 面臨的發(fā)展機(jī)遇 .......................................................... 1 市場(chǎng)競(jìng)爭(zhēng)的三國(guó)演義 ..................................................... 2 未來(lái)三年中高檔柴油發(fā)動(dòng)機(jī)活塞市場(chǎng)預(yù)測(cè) ................................. 3 本課題的基本內(nèi)容，預(yù)計(jì)可能遇到的困難，提出解決問(wèn)題的方法和措施 ....... 3 本課題擬采用的研究手段（途徑）和可行性分析 ................................ 4 2 活塞結(jié)構(gòu)特點(diǎn) ...................................................................... 5 活塞的工作環(huán)境及承受的作用力 ................................................ 5 活塞的結(jié)構(gòu)特點(diǎn) ................................................................. 5 3 活塞的工藝規(guī)程的制訂 ............................................................ 8 機(jī)械加工工藝過(guò)程的基本概念 ................................................... 8 工序、工步和工作行程 ................................................... 8 安裝與工位 ............................................................... 8 制訂機(jī)械加工工藝規(guī)程的原始資料及活塞的工藝分析 ........................... 8 產(chǎn)品的零件圖 (見(jiàn)圖紙 ) ................................................... 8 產(chǎn)品驗(yàn)收的質(zhì)量標(biāo)準(zhǔn) ..................................................... 8 產(chǎn)品的生產(chǎn)綱領(lǐng)和生產(chǎn)類型 ............................................. 9 活塞的材料及毛坯制造 ......................................................... 10 材料選擇 ................................................................ 10 毛坯的選擇 ............................................................. 10 鑄造斜度 ............................................................... 10 鑄造圓角及半徑 ........................................................ 10 確定的機(jī)械加工余量 ................................................... 12 毛坯的制造方法及工藝特點(diǎn) ............................................ 12 基準(zhǔn)的選擇 .................................................................... 12 粗基準(zhǔn)和精 基準(zhǔn)的選擇 .................................................. 13 擬定工藝路線 .................................................................. 15 加工方法的確定 ........................................................ 15 攀枝花學(xué)院本科 畢業(yè)設(shè)計(jì)（論文） 目錄 II 加工階段的劃分 ................................................ 16 工序的安排 .............................................................. 17 工藝方案的比較與技術(shù)經(jīng)濟(jì)分析 ......................................... 19 活塞加工余量的確定 ........................................................... 22 加工余量的確定方 法 .................................................... 23 加工余量的確定 ........................................................ 23 工序尺寸與公差的確定 ......................................................... 23 機(jī)床與工藝裝備的確定 ......................................................... 25 機(jī)床的選擇 .............................................................. 26 夾具的選擇 .............................................................. 26 刀具的選擇 .............................................................. 27 量具的選擇 .............................................................. 27 切削用量的確定 ................................................................ 30 工序時(shí)間的計(jì)算 ............................................................... 31 4 精鏜銷孔夾具設(shè)計(jì) ................................................................ 34 機(jī)床夾具的功能 ................................................................ 34 機(jī)床夾具的類型 ................................................................ 34 機(jī)床夾具的基本組成 ........................................................... 34 活塞銷孔加工夾具的定位及誤差分析 ........................................... 35 定位方式和定位元件 .................................................... 35 定位元件尺寸及公差計(jì)算 ................................................ 35 定位誤差分析與計(jì)算 .................................................... 36 工件的夾緊裝置的設(shè)計(jì) ......................................................... 37 夾 緊裝置的組成和基本要求 ............................................. 37 夾緊裝置的組成 ......................................................... 37 夾緊裝置的基本要求 .................................................... 38 夾緊力的確定 ........................................................... 38 對(duì)定裝置 ....................................................................... 41 標(biāo)準(zhǔn)件的選取 .................................................................. 41 夾具體的設(shè)計(jì) .................................................................. 42 夾具體的毛坯結(jié)構(gòu) ....................................................... 42 夾具體外形尺寸的確定 .................................................. 42 夾具體的排屑結(jié)構(gòu) ....................................................... 43 精鏜銷孔夾具工作原理 ......................................................... 43 攀枝花學(xué)院本科 畢業(yè)設(shè)計(jì)（論文） 目錄 III 5 鉆油孔夾具設(shè)計(jì) ................................................................. 45 工件的定位 .................................................................... 45 定位誤差的分析與計(jì)算 ......................................................... 45 工件的夾緊 .................................................................... 46 導(dǎo)向裝置的確定 .................................................