【正文】 學(xué)院 畢業(yè)設(shè)計(jì)（論文） 課 題 名 稱(chēng) ： 連桿的機(jī)械加工工藝及夾具設(shè)計(jì) 學(xué) 生 姓 名 ： 學(xué) 號(hào) ： 院系、 專(zhuān)業(yè) ： 指 導(dǎo) 老 師 ： 2021 年 12 月 28 日 內(nèi)容摘要 連桿是柴油機(jī)的主要傳動(dòng)件之一，本文論述了連桿的加工工藝及其夾具的設(shè)計(jì)。連桿的尺寸精度、形狀精度以及位置精度的要求都很高，而連桿的剛性比較差，容易產(chǎn)生變形，因此在安排工藝過(guò)程時(shí)，就需要把各主要表面的粗精加工工序分開(kāi)。逐步減少加工余量、切削力及內(nèi)應(yīng)力的作用，并修正加工后的變形，就能最后達(dá)到零件的技術(shù)要求。 機(jī)械加工工藝是企業(yè)上品種、上水平、加速產(chǎn)品更新，提高經(jīng)濟(jì)效益的技術(shù)保障。然而夾具有事制造系統(tǒng)的重要部分，工藝對(duì)夾 具的要求也會(huì)提高，專(zhuān)用夾具、成組夾具、組合夾具和隨行夾具都朝著柔性化、自動(dòng)化、標(biāo)注化、通用化和高效化方向發(fā)展以滿(mǎn)足加工要求。所以對(duì)機(jī)械的加工工藝及夾具設(shè)計(jì)具有十分重要的意義。 關(guān)鍵詞： 連桿 加工工藝 夾具設(shè)計(jì) 新鄉(xiāng)職業(yè)技術(shù)學(xué)院畢業(yè)設(shè)計(jì)（論文） II Abstract Author: Guo qianqian Tutor:Li ling Connecting rod is one of the main transmission parts of diesel engine, this paper discusses the processing technology of connecting rod and the design of fixture. Connecting rod size accuracy, the accuracy requirement of the shape and position precision is very high, and the rigidity of the connecting rod is poorer, prone to deformation, therefore in the arrangement of technological process, you need to separate the rough finish machining process on the surface of the main. Gradually reduce machining allowance, cutting force and the role of internal stress, and correct processing after deformation, can finally achieve the technical requirements of parts. Machining process on varieties, is the enterprise level, product updates faster, improve the economic benefit of technical support. Fixture occupy an important part of manufacturing system, however, technology will also increase to the requirement of fixture and special fixture, group clamps, modular fixture and pallet toward flexible, automation, tagging, generalization and highly efficient direction to meet the processing requirements. So the mechanical processing technology and fixture design is of great significance. Key words: connecting rod processing technology fixture design 新鄉(xiāng)職業(yè)技術(shù)學(xué)院畢業(yè)設(shè)計(jì)（論文） III 目 錄 摘要 ................................................................. I Abstract ............................................................ II 第 1 章 緒論 ........................................................ 1 連桿的結(jié)構(gòu)特點(diǎn) .......................................................................................... 1 本次設(shè)計(jì)內(nèi)容 ................................................................................................ 2 第 2 章 機(jī)械加工工藝規(guī)程的制定 ............................................................................. 3 零件的工藝分析 ............................................................................................ 3 產(chǎn)品結(jié)構(gòu)和工藝分析 ............................................................................. 3 平面加工 ................................................................................................. 3 孔加工 ..................................................................................................... 3 技術(shù)要求 ................................................................................................. 3 毛坯的確定 .................................................................................................... 5 有關(guān)設(shè)計(jì)條件的說(shuō)明 ............................................................................. 5 毛坯的材料 ............................................................................................. 6 制坯方法的確定 ..................................................................................... 6 連桿工件的定位基準(zhǔn)和定位方案分析 ......................................................... 7 定位基準(zhǔn)的選擇 ..................................................................................... 7 確定合理的夾緊方法 ............................................................................. 8 加工經(jīng)濟(jì)精度與加工工序安排 ................................................................... 10 加工經(jīng)濟(jì)精度 ....................................................................................... 10 連桿加工主要加工表面工序安排 ....................................................... 10 典型表面的加工 方法 .................................................................................. 11 連桿加工工藝過(guò)程的確定 .......................................................................... 11 定位基準(zhǔn)的選擇 ................................................................................. 11 工藝路線(xiàn)的擬定 ................................................................................. 11 加工設(shè)備與工藝設(shè)備的選擇 .........................................................