【正文】 使用手冊(cè)及圖表資料。 通過以上的概述，整個(gè)設(shè)計(jì)基本完成。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，確定加工過程中的粗基準(zhǔn)和精基準(zhǔn)。 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)及操作簡要說明 ................................................................................ 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)。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。在這個(gè)過程中，使我對(duì)所學(xué)的知識(shí)有了進(jìn)一步的了解 。 并且其余加工面都與它有位置關(guān)系 ,可以先加工它的一個(gè)端面 ,再借助專用夾具以這個(gè)端面為定位基準(zhǔn)加工另一端面 ,然后再加工孔到尺寸要求，再以孔定位加工各個(gè)表面。這兩個(gè)要求常常是不能兼顧的，但對(duì)于一般的軸類零件來說，以外圓作為粗基準(zhǔn)是完全合理的。 三．左 ? 45 外圓面：公差等級(jí)為 IT6~IT7，表面粗糙度為 ，采用粗車 → 半精車 →磨削的加工方法。 十一 . ? 100 突臺(tái)右端面：未注公差等級(jí)，根據(jù) GB1800— 79 規(guī)定公差為 IT13，表面粗糙度為 ，采用的加工方法為粗車 → 半精車 → 磨削。除此以外，還應(yīng)當(dāng)考慮經(jīng)濟(jì)效果，以便使生產(chǎn)成本盡量下降。 （ 6）工序 15 是鉆削 ? 4 孔，鉸 ? 6 孔，選擇 Z535 立式鉆床 。 ，刃傾角 10176。 （ 4）磨削 ? 100 外圓面、 ? 90 外圓面面、磨削 ? 90 突臺(tái)距離軸線 24mm 側(cè)平面，磨料選擇黑色碳化硅，磨料粒度號(hào)選擇 F150。主偏角為 93176。偏頭端面車刀，刀具材料為 YG8 硬質(zhì)合金，前刀面形狀為平面帶倒棱形，前角為 10176。主偏角為 93176。副偏角為 10176。刀尖角圓弧半徑為 ，刃傾角為 10176。偏頭端面車刀，刀具材料為 YG8 硬質(zhì)合金，前刀面形狀為平面帶倒棱形，前角為 10176。后角為 6176。主偏角為 93176。后角為 6176。主偏角為 90176。 (b)確定進(jìn)給量 由《切削用量簡明手冊(cè)》表 得 f=～ ,選擇 CA6140 車床，由表42，取 f=(c)選擇刀具磨鈍標(biāo)準(zhǔn)及耐用度 《切削用量手冊(cè)》表 查取后刀面磨鈍標(biāo)準(zhǔn)為 ～ ，耐用度為 T=60min. (d)確定切削速度 v 根據(jù)《切削用量簡明手冊(cè)》表 查取， v=，由于實(shí)際車削過程使用條件的改變，查取切削速度修正系數(shù) : . . , ???????????? k T vkvtvsvMvTv 則修正后的 k T vkvtvsvMvTv修 vv ????????????? = = m/min 則 :根據(jù) （ 31）得： m in/ 7 21