【正文】 .......................................................................................5Abstract...................................................................................................................6Key words :...............................................................6第一章 緒 論 .......................................................................................................7 設(shè)計任務(wù) ..............................................................7 加工工藝規(guī)程設(shè)計的目的和意義 ..........................................7 國內(nèi)外發(fā)動機連桿工藝發(fā)展現(xiàn)狀和發(fā)展趨勢 ................................9 連桿工藝研究方向和研究的關(guān)鍵問題 .....................................10第二章 連桿零件的分析 ...................................................................................1連桿零件的分析 ......................................................11 連桿零件結(jié)構(gòu)分析 ..................................................11 零件加工表面及其加工要求 ...........................................11 零件材料的選擇 ................................................................................................13 C70S6 鋼的成分和力學(xué)性能 ...............................................................................15 毛坯的制造方法 ..................................................................................................16 工藝規(guī)程的定制 .......................................................16 定位基準(zhǔn)的分析 ...................................................................................................16 加工工藝路線的擬定 ...............................................................................................17 機械加工余量，工序尺寸及毛坯尺寸確定 .................................18 加工工藝階段的劃分和加工順序的安排 ...................................18 連桿加工工藝過程的擬定 ...............................................19 加工工藝過程用時的計算 ...............................................19 磁力探傷及去磁 ...................................................................................................19 粗磨大、小頭端面 ..............................................................................................19 粗、半精鏜大、小頭孔 .......................................................................................20 銑大頭兩側(cè) ...........................................................................................................20 擴(kuò)、鉸螺釘孔 .......................................................................................................21 銑螺栓座面、倒角 ...............................................................................................21 去毛刺、清洗 .......................................................................................................22 激光開槽、作標(biāo)記、脹斷 ...................................................................................22 銑卡瓦槽 ...............................................................................................................22．10 連桿體、蓋裝配 ...............................................................................................23 精磨大、小頭兩端面（先標(biāo)記朝上） .............................................................23河南工業(yè)職業(yè)技術(shù)學(xué)院4 精鏜大、小頭孔 .................................................................................................23 大、小頭孔兩端倒角、去毛刺 .........................................................................23 擠壓銅套孔 .........................................................................................................24 鉆小頭油孔 .........................................................................................................24 稱重、去重、清洗、終檢 .................................................................................24第三章 脹斷工藝簡介 .........................................................................................25 應(yīng)力槽設(shè)計 ...........................................................25 脹斷工裝設(shè)計 .........................................................26 脹斷參數(shù)的計算 .......................................................26第四章 夾具設(shè)計 .................................................................................................27 問題的指出 ...........................................................27 夾具設(shè)計 .............................................................27（1）定位基準(zhǔn)的選擇 ....................................................................................................27第五章 機械加工工序卡片（附） ...................................................................29第六章 汽車連桿毛坯圖（附） .......................................................................29第七章 汽車連桿裝配圖（附） .......................................................................29第八章 銑卡瓦槽夾具、裝配圖（附） ...........................................................29總結(jié) .........................................................................................................................30參考文獻(xiàn) .................................................................................................................31河南工業(yè)職業(yè)技術(shù)學(xué)院5摘要連桿是汽車發(fā)動機的主要部件之一，它決定著發(fā)動機的性能和運行的穩(wěn)定性。 “脹斷工藝”成為了連桿工藝中的又一新名詞。本文以汽車機連桿制造工藝的總體方案為主要研究內(nèi)容，以連桿的脹斷工藝為主要研究方向。方案特別對脹斷工藝的原理及過程做了深入淺出的論述，并在認(rèn)真分析連桿技術(shù)要求、廣泛查閱相關(guān)文獻(xiàn)的基礎(chǔ)之上，制定出了一條基本適于連桿實際生產(chǎn)的新型工藝方案和路線。關(guān)鍵詞：汽車連桿，工藝方案，脹斷工裝河南工業(yè)職業(yè)技術(shù)學(xué)院6AbstractLinkage of the diesel engine is one of the main parts of its decision to the engine performance and the stability. With the scientific and technological development and progress of the link was injected into a modern manufacturing processing methods. Expansion of off has bee a link in the process of yet another new term. Linkage bulging off the application process so that the lin