【正文】 . . 摘 要 機(jī)械制造工藝學(xué)是以研究機(jī)械加工工藝技術(shù)和夾具設(shè)計(jì)為主技術(shù)學(xué)科，具有很強(qiáng)的實(shí)踐性，要求學(xué)習(xí)過(guò)程中應(yīng)緊密聯(lián)系生產(chǎn)實(shí)踐，同時(shí)它又具有很強(qiáng)的綜合性 。 機(jī)械加工工藝是指用機(jī)械加工的方法改變毛坯的形狀、尺寸、相對(duì)位置和性質(zhì)使其成為合格零件的全過(guò)程 。 本次畢業(yè)設(shè)計(jì)的課題是 CA6140 車床法蘭盤加工工藝規(guī)程及某一工序?qū)Ｓ脢A具設(shè)計(jì)，主要內(nèi)容如下： 首先，對(duì)零件進(jìn)行分析，主要是零件作用的分析和工藝分析，通過(guò)零件 作用 分析可以了解零件的基本情況，而工藝分析可以知道零件的加工表面和加工要求。根據(jù)零件圖提出的加工要 求，確定毛坯的制造形式和尺寸的確定。 其次 ，進(jìn)行基面的選擇，確定加工過(guò)程中的粗基準(zhǔn)和精基準(zhǔn)。根據(jù)選好的基準(zhǔn)，制訂工藝路線，通常制訂兩種以上的工藝路線，通過(guò)工藝方案的比較與分析，再選擇可以使零件的幾何形狀、尺寸精度及位置精度等技術(shù)要求得到合理的保證的一種工序。 再次 ，根據(jù)已經(jīng)選定的工序路線，確定每一步的切削用量及基本工時(shí)，并選擇合適的機(jī)床和刀具。對(duì)于粗加工，還要校核機(jī)床功率。 最后，設(shè)計(jì)第三道工序 — 鉆法蘭盤孔的夾具。先提出設(shè)計(jì)問(wèn)題，再選擇定位基準(zhǔn)，然后開(kāi)始切削力、夾緊力的計(jì)算和定位誤差的分析。然后 把設(shè)計(jì)的過(guò)程整理為圖紙。 通過(guò)以上的概述，整個(gè)設(shè)計(jì)基本完成。 關(guān)鍵詞 :法蘭盤 ,機(jī)械加工工藝 ,夾具設(shè)計(jì) ,工序 ,定位 . . Abstract Mechanical manufacturing technology is based on research of mechanical processing technology and fixture design technology, which has strong practicality, and requires close relation of production practice in the learning process. And it is also very strong prehensive. Mechanical processing technology refers to the use of mechanical processing method to change the rough shape, size, relative location and nature to bee qualified parts of the whole process. The graduation design is the subject CA6140 lathe machining procedure and flanges a procedure for fixture design, the main content as follows: Firstly, the analysis of main parts, the role of parts and is analyzed. Through the analysis technology of ponents we can understand the basic situation, and through part of process analysis can know requirements of parts of processing and surface processing. According to the requirements of machining parts graph, the shape and size of blank is determined. Secondly, we select the base, and make sure good benchmark and crude benchmarks in the mechanical process. According to good benchmark chosen, two or more processes is usually maken. Through the parison and analysis process scheme, then we choose one guarantee which can reasonably make sure requirements of technology such as parts’ dimension accuracy , geometric shape and location accuracy . Thirdly, according to the process route has been selected, every step of cutting dosages and basic manhour must be found and choose appropriate machine and tools. For rough procers, needing to mechnical power. Finally, the design process of drilling holes flanges fixture. First, then presents the design problems, and then began to choose the locating datum clamping force cutting force and the calculation and analysis of the positioning error. Then the design process for the drawings. Through the above outline, entire design pletes basically. Keywords: flange, machining technology, machining process, location, Special jig . . 目 錄 摘 要 ............................................................................................................ I 1 前 言 ................................................................................................................1 2 零件的分析 .....................................................................................................2 零件的作用 .................................................................................................................. 2 零件的工藝分析 ........................................................................................................... 2 3 工藝規(guī)程設(shè)計(jì) .................................................................................................3 確定毛坯的制造方法，初步確定毛坯形狀 .............................................................. 3 基準(zhǔn)的選擇 .................................................................................................................. 3 工件表面加工方法的選擇 .......................................................................................... 3 制定工藝路 線 .............................................................................................................. 4 機(jī)械加工余量、工序尺寸及毛坯尺寸的確定 .......................................................... 5 工序設(shè)計(jì) ...................................................................................................................... 7 確定切削用量及基本工時(shí) .......................................................................................... 8 4 夾具設(shè)計(jì) ...................................................................................................... 40 夾具的設(shè)計(jì) ................................................................................................................ 40 設(shè)計(jì)要求 .................................................................................................................... 41 夾具的分析 ................................................................................................................ 41 切削力及夾緊力的計(jì)算 ............................................................................................. 42 夾具結(jié)構(gòu)設(shè)計(jì)及操作簡(jiǎn)要說(shuō)明 ................................................................................ 42 結(jié) 論 .......................................................................................................... 43 致 謝 .......................................................................................................... 44 參考文獻(xiàn) .......................................................................................................... 45 附 錄 .......................................................................................................... 47 . . 1 前 言 畢業(yè)設(shè)計(jì)是在我們完成了全部基礎(chǔ)課、技術(shù)基礎(chǔ)課、專業(yè)課以及參加了生產(chǎn)實(shí)習(xí)之后進(jìn)行的最后的設(shè)計(jì)。這是我們?cè)诋厴I(yè)之前對(duì)所學(xué)各課程的一次深入的綜合性的總結(jié)，也是一次理論聯(lián)系實(shí)際的訓(xùn)練，因此，它在我們四年的大學(xué)生活中占有重要的地位。 機(jī)械制造技術(shù)是一門非常重要的技術(shù)，人類的發(fā)展過(guò)程就是一個(gè)不斷的制造過(guò)程。因此，制造技術(shù)的重要性是不言而喻的，它有以下四個(gè)方面的意義。 業(yè)的支柱 通過(guò)本次畢業(yè)設(shè)計(jì)，應(yīng)該得到下述各方面的鍛煉： 能熟練運(yùn)用機(jī)械制造工藝設(shè)計(jì)中的基本理論以及在生產(chǎn)實(shí)習(xí)中學(xué)到的實(shí)踐知識(shí)，正確地解決一個(gè)零件在加工中的定位、夾緊以及工藝路線安排、工藝尺寸確定等問(wèn)題，保證零件的加工質(zhì)量。 提高結(jié)構(gòu)設(shè)計(jì)的能力。通過(guò)設(shè)計(jì)夾具的訓(xùn)練，應(yīng)當(dāng)獲得根據(jù)被加工零件的加工要求，設(shè)計(jì)出高效、省力、經(jīng)濟(jì)合理而且能保證加工質(zhì)量的夾具的能力。 學(xué)會(huì)使用手冊(cè)及圖表資料。掌握與本設(shè)計(jì)有關(guān)的各種資料的名稱、出處、能夠做到熟練運(yùn)用。 就我個(gè)人而言，通過(guò)這次設(shè)計(jì)，基本上掌握了零件機(jī)械加工工藝規(guī)程的設(shè)計(jì)，機(jī)床專用夾具等工藝裝備的設(shè)計(jì)等。并學(xué)會(huì)了使用和查閱各種設(shè)計(jì)資料、手冊(cè)、和國(guó)家標(biāo)準(zhǔn)等。最重要的是綜合運(yùn)用所學(xué)理論知識(shí)，解決現(xiàn)代實(shí)際工藝設(shè)計(jì)問(wèn)題