斜齒輪軸零件的機(jī)械加工工藝規(guī)程及專用夾具設(shè)計(jì)

喜歡這套資料就充值下載吧。。。資源目錄里展示的都可在線預(yù)覽哦。。。下載后都有，，請(qǐng)放心下載，，文件全都包含在內(nèi)，圖紙為CAD格式可編輯，【有疑問(wèn)咨詢QQ:414951605 或 1304139763】 機(jī)械加工工藝過(guò)程卡片 零件圖號(hào) 共　2 頁(yè) 零件名稱 齒輪軸 第　　頁(yè) 材料牌號(hào) 40Cr鋼 毛坯種類 鍛件 毛坯外形尺寸 每件毛坯可制件數(shù) 1 每臺(tái)件數(shù) 工序號(hào) 工序內(nèi)容 車(chē)間 工段 設(shè)備 工藝裝備 工時(shí) 準(zhǔn)終 單件 10 鍛 造 鍛工 自由鍛 鍛床 游標(biāo)卡尺 20 去飛邊 金工 磨工 磨床 砂輪、游標(biāo)卡尺 30 粗車(chē)齒輪軸右端面，粗車(chē)外圓Φ60mm、Φ65mm、Φ80mm、Φ141.78 ，留2mm加工余量 金工 車(chē)、鉗工 普通車(chē)床 外圓車(chē)刀、三爪卡盤(pán) 40 粗車(chē)齒輪軸左端面，保證全長(zhǎng)，粗車(chē)外圓Φ60mm、Φ75mm、留2mm加工余量 金工 車(chē) 、鉗工 普通車(chē)床 外圓車(chē)刀、麻花鉆、三爪卡盤(pán) 50 調(diào)質(zhì)處理 熱加工 熱處理 淬火機(jī) 淬火機(jī) 60 半精車(chē)齒輪軸右端面，半精車(chē)外圓Φ60mm、Φ65mm、Φ80mm、Φ141.78 ，其中外圓Φ60mm、Φ65mm留0.5mm加工余量，其余表面加工到尺寸要求。 金工 車(chē)工 普通車(chē)床 外圓車(chē)刀、三爪卡盤(pán) 70 半精車(chē)齒輪軸左端面，保證全長(zhǎng)，半精車(chē)外圓Φ60mm留0.5mm加工余量、半精車(chē)外圓Φ75mm加工到尺寸要求。 金工 車(chē)工 普通車(chē)床 外圓車(chē)刀、三爪卡盤(pán) 80 銑鍵槽，選擇兩個(gè)Φ60mm 外圓面作為基準(zhǔn)。 金工 鉗工 普通立式銑床 銑刀、專用夾具 90 插齒輪 金工 鉗工 插齒機(jī) 插刀、專用夾具 100 粗、精磨右端面及外圓Φ60mm、Φ65mm，以及磨制過(guò)渡圓角。 金工 磨工 普通磨床 砂輪、游標(biāo)卡尺 110 粗、精磨左端面及外圓Φ75mm。 金工 車(chē)工 普通磨床 砂輪、游標(biāo)卡尺 120 去毛刺 金工 鉗工 鉗工臺(tái) 深度游標(biāo)卡尺 130 檢驗(yàn) 檢驗(yàn) 140 入庫(kù) 倉(cāng)庫(kù) 畢業(yè)設(shè)計(jì)(論文)開(kāi)題報(bào)告 題目：齒輪軸零件的機(jī)械加工工藝規(guī)程及專用夾具設(shè)計(jì) 課 題 類 別： 設(shè)計(jì) □ 論文　□ 學(xué) 生 姓 名： ＸＸＸ 學(xué) 號(hào)：ＸＸＸ 班 級(jí)：機(jī)電ＸＸＸ班 專業(yè)（全稱）：機(jī)械設(shè)計(jì)制造及其自動(dòng)化 指 導(dǎo) 教 師：ＸＸＸＸ 2015年3月 一、本課題設(shè)計(jì)（研究）的目的： 夾具是一種能夠使工件按一定的技術(shù)要求準(zhǔn)確定位和牢固夾緊的工藝裝備，它廣泛地運(yùn)用于機(jī)械加工，檢測(cè)和裝配等整個(gè)工藝過(guò)程中。在現(xiàn)代化的機(jī)械和儀器的制造業(yè)中，提高加工精度和生產(chǎn)率，降低制造成本，一直都是生產(chǎn)廠家所追求的目標(biāo)。正確地設(shè)計(jì)并合理的使用夾具，是保證加工質(zhì)量和提高生產(chǎn)率，從而降低生產(chǎn)成本的重要技術(shù)環(huán)節(jié)之一。同時(shí)也擴(kuò)大各種機(jī)床使用范圍必不可少重要手段。 一項(xiàng)優(yōu)秀的夾具結(jié)構(gòu)設(shè)計(jì)，往往可以使生產(chǎn)效率大幅度提高，并使產(chǎn)品的加工質(zhì)量得到極大的穩(wěn)定[2]。尤其是那些外形輪廓結(jié)構(gòu)較復(fù)雜的，不規(guī)則的拔叉類，桿類工件，幾乎各道工序都離不開(kāi)專門(mén)設(shè)計(jì)的高效夾具。目前中等生產(chǎn)規(guī)模的機(jī)械加工生產(chǎn)企業(yè)，其夾具的設(shè)計(jì)，制造工作量，占新產(chǎn)品工藝準(zhǔn)備工作量的50%-80%。生產(chǎn)設(shè)計(jì)階段，對(duì)夾具的選擇和設(shè)計(jì)工作的重視程度，絲毫也不亞于對(duì)機(jī)床設(shè)備及各類工藝參數(shù)的慎重選擇。夾具的設(shè)計(jì)，制造和生產(chǎn)過(guò)程中對(duì)夾具的正確使用，維護(hù)和調(diào)整，對(duì)產(chǎn)品的優(yōu)劣起著舉足輕重的作用。 二、設(shè)計(jì)（研究）現(xiàn)狀和發(fā)展趨勢(shì)（文獻(xiàn)綜述）： 夾具的設(shè)計(jì)包括三個(gè)步驟：設(shè)備規(guī)劃，夾具規(guī)劃和夾具結(jié)構(gòu)設(shè)計(jì)。目前，J.-Y. Jung[3]以及Ferreira等人在進(jìn)行CAPP方面的研究中對(duì)設(shè)備規(guī)劃有詳細(xì)論述。計(jì)算機(jī)輔助家居設(shè)計(jì)（CAFD）就夾具方面也做了一些工作；Chou YC Chandru V等人提出的自動(dòng)夾具定位和夾緊的一種方法；de meter EC提出的利用機(jī)械杠桿原理進(jìn)行定位和夾緊位置選擇的一種算法。目前，關(guān)于工件夾具的自動(dòng)化配置方面的工作，自動(dòng)化結(jié)構(gòu)設(shè)計(jì)AFCD中很少提及。 Cai等提出了一種指導(dǎo)夾具設(shè)計(jì)的方法，此方案是縮小由于工件表面與夾具安裝誤差所帶來(lái)的定位誤差。Hockenberger[4]與Demter提出的模式是在工件加工期間工件的靜態(tài)分析，這種方法是一種定性分析并且是在抓緊或夾緊物體的最壞的情況下的偏差，這種情況是由于干涉扭矩。夾具是機(jī)械加工不可缺少的部件，在機(jī)床技術(shù)向高速、高效、精密、復(fù)合、智能、環(huán)保方向發(fā)展的帶動(dòng)下，夾具技術(shù)正朝著高精、高效、模塊、組合、通用、經(jīng)濟(jì)方向發(fā)展[5]。 高 精 隨著機(jī)床加工精度的提高，為了降低定位誤差，提高加工精度，對(duì)夾具的制造精度要求更高。高精度夾具的定位孔距精度高達(dá)±5μm，夾具支承面的垂直度達(dá)到0.01mm/300mm，平行度高達(dá)0.01mm/500mm。德國(guó)demmeler(戴美樂(lè))公司制造的4m長(zhǎng)、2m寬的孔系列組合焊接夾具平臺(tái)，其等高誤差為±0.03mm；精密平口鉗的平行度和垂直度在5μm以內(nèi)；夾具重復(fù)安裝的定位精度高達(dá)±5μm；瑞士EROWA柔性?shī)A具的重復(fù)定位精度高達(dá)2~5μm。機(jī)床夾具的精度已提高到微米級(jí)，世界知名的夾具制造公司都是精密機(jī)械制造企業(yè)。誠(chéng)然，為了適應(yīng)不同行業(yè)的需求和經(jīng)濟(jì)性，夾具有不同的型號(hào)，以及不同檔次的精度標(biāo)準(zhǔn)供選擇。 高 效 為了提高機(jī)床的生產(chǎn)效率，雙面、四面和多件裝夾的夾具產(chǎn)品越來(lái)越多。為了減少工件的安裝時(shí)間，各種自動(dòng)定心夾緊、精密平口鉗、杠桿夾緊、凸輪夾緊、氣動(dòng)和液壓夾緊等，快速夾緊功能部件不斷地推陳出新。新型的電控永磁夾具，加緊和松開(kāi)工件只用1~2秒，夾具結(jié)構(gòu)簡(jiǎn)化，為機(jī)床進(jìn)行多工位、多面和多件加工創(chuàng)造了條件。為了縮短在機(jī)床上安裝與調(diào)整夾具的時(shí)間，瑞典3R夾具僅用1分鐘，即可完成線切割機(jī)床夾具的安裝與校正。采用美國(guó)Jergens(杰金斯)公司的球鎖裝夾系統(tǒng)，1分鐘內(nèi)就能將夾具定位和鎖緊在機(jī)床工作臺(tái)上，球鎖裝夾系統(tǒng)用于柔性生產(chǎn)線上更換夾具，起到縮短停機(jī)時(shí)間，提高生產(chǎn)效率的作用。 模塊、組合夾具元件模塊化是實(shí)現(xiàn)組合化的基礎(chǔ)[6]。利用模塊化設(shè)計(jì)的系列化、標(biāo)準(zhǔn)化夾具元件，快速組裝成各種夾具，已成為夾具技術(shù)開(kāi)發(fā)的基點(diǎn)。省工、省時(shí)，節(jié)材、節(jié)能，體現(xiàn)在各種先進(jìn)夾具系統(tǒng)的創(chuàng)新之中。模塊化設(shè)計(jì)為夾具的計(jì)算機(jī)輔助設(shè)計(jì)與組裝打下基礎(chǔ)，應(yīng)用CAD技術(shù)，可建立元件庫(kù)、典型夾具庫(kù)、標(biāo)準(zhǔn)和用戶使用檔案庫(kù)，進(jìn)行夾具優(yōu)化設(shè)計(jì)，為用戶三維實(shí)體組裝夾具。模擬仿真刀具的切削過(guò)程，既能為用戶提供正確、合理的夾具與元件配套方案，又能積累使用經(jīng)驗(yàn)，了解市場(chǎng)需求，不斷地改進(jìn)和完善夾具系統(tǒng)。組合夾具分會(huì)與華中科技大學(xué)合作，正在著手創(chuàng)建夾具專業(yè)技術(shù)網(wǎng)站，為夾具行業(yè)提供信息交流、夾具產(chǎn)品咨詢與開(kāi)發(fā)的公共平臺(tái)，爭(zhēng)取實(shí)現(xiàn)夾具設(shè)計(jì)與服務(wù)的通用化、遠(yuǎn)程信息化和經(jīng)營(yíng)電子商務(wù)化。通用、經(jīng)濟(jì)夾具的通用性直接影響其經(jīng)濟(jì)性[7]。采用模塊、組合式的夾具系統(tǒng)，一次性投資比較大，只有夾具系統(tǒng)的可重組性、可重構(gòu)性及可擴(kuò)展性功能強(qiáng)，應(yīng)用范圍廣，通用性好，夾具利用率高，收回投資快，才能體現(xiàn)出經(jīng)濟(jì)性好。德國(guó)demmeler(戴美樂(lè))公司的孔系列組合焊接夾具，僅用品種、規(guī)格很少的配套元件，即能組裝成多種多樣的焊接夾具。元件的功能強(qiáng)，使得夾具的通用性好，元件少而精，配套的費(fèi)用低，經(jīng)濟(jì)實(shí)用才有推廣應(yīng)用的價(jià)值[8]。 專家們建議組合夾具行業(yè)加強(qiáng)產(chǎn)、學(xué)、研協(xié)作的力度，加快用高新技術(shù)改造和提升夾具技術(shù)水平的步伐，創(chuàng)建夾具專業(yè)技術(shù)網(wǎng)站，充分利用現(xiàn)代信息和網(wǎng)絡(luò)技術(shù)，與時(shí)俱進(jìn)地創(chuàng)新和發(fā)展夾具技術(shù)。主動(dòng)與國(guó)外夾具廠商聯(lián)系，爭(zhēng)取合資與合作，引進(jìn)技術(shù)，這是改造和發(fā)展我國(guó)組合夾具行業(yè)較為行之有效的途徑[9]。 改革開(kāi)放以來(lái)，隨著中國(guó)與世界的接軌，中國(guó)不斷的引進(jìn)了西方先進(jìn)的加工技術(shù)，而且隨著世界科技的飛速發(fā)展，數(shù)控機(jī)床，加工中心，柔性制造單元，柔性制造系統(tǒng)等一系列高端設(shè)備得以廣泛的運(yùn)用，使得我國(guó)的加工精度和加工方法也發(fā)生了革命性的改變。產(chǎn)品更新?lián)Q代的加快，產(chǎn)品需求的多樣化，是制造業(yè)面臨巨大挑戰(zhàn)，特別像齒輪軸這種不規(guī)則零件就出現(xiàn)了重大問(wèn)題，現(xiàn)階段齒輪軸零件加工還打不到自動(dòng)化加工，它的工藝好需要人工畫(huà)線的方法來(lái)保證，而零件的裝夾也是通過(guò)人工來(lái)完成的，所以現(xiàn)階段我國(guó)對(duì)齒輪軸這種不規(guī)則零件的加工的效率還是比較低的階段。夾具方面人們也從過(guò)去傳統(tǒng)的夾具的裝夾，定位，刀具的引導(dǎo)定位為夾具的裝夾和定位，隨著數(shù)字化加工設(shè)備的擴(kuò)大化，已經(jīng)將夾具的引導(dǎo)刀具功能完全替代，給今后的夾具的快速裝夾與定位提出了更高的要求。 三、設(shè)計(jì)（研究）的重點(diǎn)與難點(diǎn)。 通過(guò)網(wǎng)絡(luò)、期刊、教材、廠家資料及國(guó)內(nèi)外相關(guān)文獻(xiàn)查閱。根據(jù)要求完成對(duì)齒輪軸加工工藝和夾具設(shè)計(jì)系統(tǒng)設(shè)計(jì)。完成設(shè)計(jì)圖紙的繪制并進(jìn)行相關(guān)校核工作，完成設(shè)計(jì)說(shuō)明書(shū)的編寫(xiě)。 加工工藝 1、制訂齒輪軸加工工藝規(guī)程，關(guān)鍵是工序的劃分和定位基準(zhǔn)的選擇。在設(shè)計(jì)開(kāi)始的過(guò)程中，我們必須要認(rèn)真分析零件圖，了解其齒輪軸零件的結(jié)構(gòu)特點(diǎn)和相關(guān)的技術(shù)要求，對(duì)齒輪軸零件的每一個(gè)細(xì)節(jié)，都應(yīng)仔細(xì)的分析，如齒輪軸加工表面的平行度、粗糙度、垂直度，特別是要注意齒輪軸零件各孔系自身精度（同齒輪軸度、圓度、粗糙度等）和它們的相互位置精度（齒輪軸線之間的平行度、垂直度以及齒輪軸線與平面之間的平行度、垂直度等要求），齒輪軸零件的尺寸是整個(gè)零件加工的關(guān)鍵，必須弄清齒輪軸零件的每一個(gè)尺寸。繪制零件圖是一個(gè)重點(diǎn)，同時(shí)因?yàn)辇X輪軸零件比較復(fù)雜,所以也是一個(gè)難點(diǎn)。我們采用autoCAD軟件繪制零件圖，一方面增加我們對(duì)零件的了解認(rèn)識(shí)，另一方面增加我們對(duì)autoCAD軟件的熟悉。 工序的劃分 確定加工順序和工序內(nèi)容，安排工序的集中和分散程度，劃分工序階段，這項(xiàng)工作與生產(chǎn)綱領(lǐng)有密切關(guān)系，具體可以根據(jù)生產(chǎn)類型、零件的結(jié)構(gòu)特點(diǎn)、技術(shù)要求和機(jī)床設(shè)備等。生產(chǎn)條件確定工藝過(guò)程的工序次數(shù)；如批量小時(shí)可采用在通用機(jī)床上工序集中原則，批量大時(shí)即可按工序分散原則，組織流水線生產(chǎn)，也可利用高生產(chǎn)率的通用設(shè)備，按工序集中原則組織生產(chǎn)。 2、夾具設(shè)計(jì)可能遇到的問(wèn)題： 工件定位是否正確，定位精度是否滿足要求，工件夾緊牢固是否可靠等等。 工件在夾具中的定位精度，主要與定位基準(zhǔn)是否與工序基準(zhǔn)重合、定位基準(zhǔn)與定位元件的配合狀況等因素有關(guān)，可提高夾具的制造精度，減少配合間隙，就能提高夾具在機(jī)床上的定位精度，夾具中出現(xiàn)過(guò)定位時(shí)，可通過(guò)撤消多余定位元件，使多余定位元件失去限制重復(fù)自由度的能力，增加過(guò)定位元件與定位基準(zhǔn)的配合間隙等辦法來(lái)解決。 夾緊必須可靠，但夾緊力不可過(guò)大，以免工件或夾具產(chǎn)生過(guò)大變形?？刹捎枚帱c(diǎn)夾緊或在工件鋼性薄弱部位安放適當(dāng)?shù)妮o助支撐。夾具的設(shè)計(jì)必須要保證夾具的定位準(zhǔn)確和機(jī)構(gòu)合理,考慮夾具的定位誤差和安裝誤差。我們將通過(guò)對(duì)工件與夾具的認(rèn)真分析,結(jié)合一些夾具的具體設(shè)計(jì)事例,查閱相關(guān)的夾具設(shè)計(jì)資料,聯(lián)系在工廠看到的一些齒輪軸零件加工的夾具來(lái)解決這些問(wèn)題. 四、設(shè)計(jì)（研究）進(jìn)度計(jì)劃： 畢業(yè)論文工作任務(wù) 工作進(jìn)度日程安排 調(diào)研、收集資料，寫(xiě)出開(kāi)題報(bào)告 第4-5周 確定工藝方案，編制工藝規(guī)程 第6-7周 初步確定指定工序的夾具設(shè)計(jì)方案 第8-9周 熟練掌握AutoCAD軟件 第10-11周 繪制夾具裝配圖、有關(guān)零件圖 第12-13周 撰寫(xiě)設(shè)計(jì)說(shuō)明書(shū) 第14-15周 審閱、準(zhǔn)備答辯 第16周 答辯 第17周 5參考文獻(xiàn) [1]孟少農(nóng)主編.機(jī)械加工工藝手冊(cè).機(jī)械工業(yè)出版社，1991,169–182. [2]李益民主編.機(jī)械制造工藝設(shè)計(jì)簡(jiǎn)明手冊(cè).機(jī)械工業(yè)出版社，1993,178–195. [3] J.-Y. Jung, R.S. Ahluwalia, Feature-based noncutting tool path selection, J. Manufacturing System 13 (3)（1994） 165–176. [4] Hockenberger, A systems approach to fixture planning and design, Int. J. Advanced Manufacturing Technol. 10 （1995） 169–182. [5]黃如林主編.切削加工簡(jiǎn)明實(shí)用手冊(cè).化學(xué)工業(yè)出版社，2004 169–182. [6]薛源順主編.機(jī)床夾具設(shè)計(jì).機(jī)械工業(yè)出版社，1995 169–182. [7]崇 凱主編.機(jī)械制造技術(shù)基礎(chǔ)課程設(shè)計(jì)指南. 化學(xué)工業(yè)出版社，2006.12 [8]陳于萍，高曉康主編.互換性與測(cè)量技術(shù).北京高等教育出版社，2005. 169–182. [9]司乃鈞，許德珠主編.熱加工工藝基礎(chǔ). 高等教育出版社，1991 169–182. [10]張龍勛主編.機(jī)械制造工藝學(xué)課程設(shè)計(jì)指導(dǎo)及習(xí)題.機(jī)械工業(yè)出版社，1999.11 169–182. [11]艾興，肖詩(shī)綱主編.切削用量簡(jiǎn)明手冊(cè).機(jī)械工業(yè)出版社，2002 [12] Handbook of Machine Tools Manfred weck[J] ,2005 169–182. [13]Boyes W E. Jigs and Fixture .America,SME[J],2006 169–182. 指導(dǎo)教師意見(jiàn) 簽名： 月 日 教研室（學(xué)術(shù)小組）意見(jiàn) 教研室主任（學(xué)術(shù)小組長(zhǎng)）（簽章）： 月 日 畢業(yè)設(shè)計(jì)(論文)文獻(xiàn)綜述 題目：齒輪軸零件的機(jī)械加工工藝規(guī)程及專用夾具設(shè)計(jì) 課 題 類 別： 設(shè)計(jì) □ 論文　□ 學(xué) 生 姓 名： ＸＸＸ 學(xué) 號(hào)：ＸＸＸ 班 級(jí)：機(jī)電ＸＸＸ班 專業(yè)（全稱）：機(jī)械設(shè)計(jì)制造及其自動(dòng)化 指 導(dǎo) 教 師：ＸＸＸＸ 2015年3月 齒輪軸零件的機(jī)械加工工藝規(guī)程及專用夾具設(shè)計(jì) 1.制定工藝規(guī)程的研究途徑和可行性分析 毛坯的選擇： 根據(jù)生產(chǎn)綱領(lǐng)和零件結(jié)構(gòu)選擇毛坯，毛坯的類型一般在零件圖上已有規(guī)定。對(duì)于鑄件和鍛件應(yīng)了解其分模面、澆口、冒口位置和拔模率，以便在選擇定位基準(zhǔn)和計(jì)算加工余量時(shí)有所考慮。如果毛坯是棒料或型材，則按其標(biāo)準(zhǔn)確定尺寸規(guī)格，并決定每批加工件數(shù)。 毛坯的種類和其質(zhì)量對(duì)機(jī)械加工的質(zhì)量有密切的關(guān)系。同時(shí)對(duì)提高勞動(dòng)生產(chǎn)率、節(jié)約材料、降低成本有很大的影響。擬訂工藝路線： 表示零件的加工順序及加工方法，分出工序，安裝或工位及工步等。并選擇各工序所使用的機(jī)床型號(hào)、刀具、夾具及量具等。擬訂工藝路線從實(shí)際出發(fā)，理論聯(lián)系實(shí)際和工人結(jié)合起來(lái)。常常需要提出幾個(gè)方案，進(jìn)行分析比較后再確定。 計(jì)算切削用量、加工余量及工時(shí)定額： 查閱《切削用量手冊(cè)》等資料并進(jìn)行計(jì)算確定。目前，對(duì)單件小批量生產(chǎn)不規(guī)定切削用量，而是由操作工人根據(jù)經(jīng)驗(yàn)自行選定，但對(duì)于自動(dòng)線和流水線，為保證生產(chǎn)的節(jié)拍，必須規(guī)定切削用量，并不能隨意改變。計(jì)算加工余量、工序尺寸及公差是要控制各工序的加工質(zhì)量以保證最終加工質(zhì)量。工時(shí)定額一般按各工廠的實(shí)際經(jīng)驗(yàn)積累起來(lái)的統(tǒng)計(jì)資料來(lái)估算。隨著生產(chǎn)的發(fā)展，工藝的改進(jìn)，新工藝，新技術(shù)的不斷出現(xiàn)，工時(shí)定額應(yīng)進(jìn)行相應(yīng)的修改。 對(duì)機(jī)械加工工藝規(guī)程基本要求可歸結(jié)為質(zhì)量、生產(chǎn)率和經(jīng)濟(jì)性。雖然有時(shí)互相矛盾，但只要把它們處理好，就會(huì)成為一個(gè)統(tǒng)一體。在三個(gè)要求中，質(zhì)量是首要的。質(zhì)量表現(xiàn)在機(jī)械產(chǎn)品的各項(xiàng)技術(shù)性能指標(biāo)，質(zhì)量不能保證，根本談不上數(shù)量；質(zhì)量和生產(chǎn)率之間是密切聯(lián)系的，在保證質(zhì)量的前提下，應(yīng)該不斷地最大限度地提高生產(chǎn)率，滿足生產(chǎn)量的要求。如果兩者矛盾，則生產(chǎn)率要服從于質(zhì)量，應(yīng)在保證質(zhì)量的前提下解決生產(chǎn)率問(wèn)題。在保證質(zhì)量的前提下，應(yīng)盡可能的節(jié)約耗費(fèi)，減少投資，降低制造成本，這就是經(jīng)濟(jì)性。 因此，齒輪軸的工藝規(guī)程研究途徑應(yīng)該體現(xiàn)質(zhì)量、生產(chǎn)率和經(jīng)濟(jì)性的統(tǒng)一，達(dá)到經(jīng)濟(jì)合理及可行的最優(yōu)方案。 夾具設(shè)計(jì)的研究途徑和可行性分析 齒輪軸、銑、鉆等工序使用的專用夾具，此類夾具的特點(diǎn)是針對(duì)性強(qiáng)、結(jié)構(gòu)緊湊、操作簡(jiǎn)便、生產(chǎn)率高。 夾具設(shè)計(jì)最關(guān)鍵是要求對(duì)工件定位正確，且滿足定位精度要求。為了解決此問(wèn)題，首先得了解影響定位精度的因素。然后采取措施解決具體的問(wèn)題。如定位基準(zhǔn)與定位元件的配合狀況和影響定位精度，那么可以提高夾具的制造精度，減小配合間隙就能提高夾具在機(jī)床上的定位精度。 除此之外，選擇夾具的類型與結(jié)構(gòu)型式必須與零件生產(chǎn)批量大小相適應(yīng)，夾具結(jié)構(gòu)與零部件應(yīng)具有足夠的剛度和強(qiáng)度，從而保證夾具操作方便、夾緊可靠、使用安全、并有合理的裝卸空間。 2.課題研究的主要方法 （1） 搜集資料，了解并掌握齒輪軸加工工藝結(jié)構(gòu)和工作原理。 （2） 確定設(shè)計(jì)大體思路，撰寫(xiě)開(kāi)題報(bào)告，要求完成具體的設(shè)計(jì)內(nèi)容及計(jì)算。 （3） 根據(jù)設(shè)計(jì)任務(wù)書(shū)的要求，熟悉相關(guān)軟件AutoCAD，確定設(shè)計(jì)方法及設(shè)計(jì)要點(diǎn)。按要求完成完整的設(shè)計(jì)計(jì)劃及預(yù)期達(dá)到的結(jié)果，進(jìn)行相關(guān)設(shè)計(jì)及計(jì)算。 （4） 對(duì)所設(shè)計(jì)夾具設(shè)計(jì)相關(guān)校核，準(zhǔn)備相關(guān)資料。 對(duì)設(shè)計(jì)說(shuō)明書(shū)初稿進(jìn)行相關(guān)格式修改，對(duì)設(shè)計(jì)圖紙并進(jìn)行修改。 3.研究過(guò)程中的主要問(wèn)題和解決的方法 1、研究?jī)?nèi)容 (1)查閱文獻(xiàn)資料，詳細(xì)研究零件圖，了解零件的結(jié)構(gòu)。 (2)根據(jù)零件的結(jié)構(gòu)選取毛坯的種類和制造方法毛坯余量的選擇。 (3)制定工藝規(guī)程和可行性分析。 (4)選擇粗精基準(zhǔn)，計(jì)算和選擇金屬切削機(jī)床的技術(shù)參數(shù)。 (5)根據(jù)齒輪軸的結(jié)構(gòu)設(shè)計(jì)工序過(guò)程中的專用夾具。 2、本課題可能遇到的問(wèn)題及其研究方法 （1）在剛開(kāi)始的時(shí)候工序的劃分以及定位基準(zhǔn)會(huì)比較難選擇，所以就在過(guò)程中腰認(rèn)真分析零件圖，了解齒輪軸的結(jié)構(gòu)特點(diǎn)及相關(guān)的技術(shù)要求而加工工序要根據(jù)生產(chǎn)類型，零件的結(jié)構(gòu)來(lái)認(rèn)真分析。 （2）在夾具設(shè)計(jì)的時(shí)候也可能遇到問(wèn)題，比如工件的定位是否正確，定位精度是否滿足要求等等，所以要調(diào)查現(xiàn)階段國(guó)內(nèi)外比較先進(jìn)的齒輪軸結(jié)構(gòu)，從整體上把握設(shè)計(jì)的方向，了解齒輪軸的加工工藝規(guī)程及夾具的設(shè)計(jì)原理。 （3）通過(guò)大量的資料，研究零件的結(jié)構(gòu)，選擇合適的加工方法，及選擇合理的基準(zhǔn)和工序安排。 （4）熟悉夾具的結(jié)構(gòu)選擇合理的機(jī)床及裝夾設(shè)備，確定加工余量和工序，進(jìn)行精細(xì)的準(zhǔn)確的尺寸計(jì)算，和時(shí)間的估算。 3、課題預(yù)期結(jié)果 （1）了解了齒輪軸的作用，完成對(duì)零件的結(jié)構(gòu)分析，并制作出合理的夾具及裝夾方案 （2）在保證經(jīng)濟(jì)和尺寸精度的要求下制定出合理的加工方法及加工工序。 （3）在老師的要求下及自己的計(jì)劃內(nèi)完成各項(xiàng)任務(wù)。 4、完成課題所需的工作條件 在前期得做好各項(xiàng)準(zhǔn)備，要查閱大量的文獻(xiàn)了解齒輪軸的結(jié)構(gòu)，并在CAD，上畫(huà)出這個(gè)零件，認(rèn)真去了解他的結(jié)構(gòu)，這當(dāng)中就需要一些工具書(shū)比如機(jī)械加工工藝手冊(cè)，夾具設(shè)計(jì)圖冊(cè)，刀具設(shè)計(jì)手冊(cè)以及有關(guān)教材及參考資料，最后如果有需要還可以選擇去工廠調(diào)研，以上條件具備完成本課題所需的工作條件。 4.課題研究所需的參考文獻(xiàn) [1]孟少農(nóng)主編.機(jī)械加工工藝手冊(cè).機(jī)械工業(yè)出版社，1991,169–182. [2]李益民主編.機(jī)械制造工藝設(shè)計(jì)簡(jiǎn)明手冊(cè).機(jī)械工業(yè)出版社，1993,178–195. [3] J.-Y. Jung, R.S. Ahluwalia, Feature-based noncutting tool path selection, J. Manufacturing System 13 (3)（1994） 165–176. [4] Hockenberger, A systems approach to fixture planning and design, Int. J. Advanced Manufacturing Technol. 10 （1995） 169–182. [5]黃如林主編.切削加工簡(jiǎn)明實(shí)用手冊(cè).化學(xué)工業(yè)出版社，2004 169–182. [6]薛源順主編.機(jī)床夾具設(shè)計(jì).機(jī)械工業(yè)出版社，1995 169–182. [7]崇 凱主編.機(jī)械制造技術(shù)基礎(chǔ)課程設(shè)計(jì)指南. 化學(xué)工業(yè)出版社，2006.12 [8]陳于萍，高曉康主編.互換性與測(cè)量技術(shù).北京高等教育出版社，2005. 169–182. [9]司乃鈞，許德珠主編.熱加工工藝基礎(chǔ). 高等教育出版社，1991 169–182. [10]張龍勛主編.機(jī)械制造工藝學(xué)課程設(shè)計(jì)指導(dǎo)及習(xí)題.機(jī)械工業(yè)出版社，1999.11 169–182. [11]艾興，肖詩(shī)綱主編.切削用量簡(jiǎn)明手冊(cè).機(jī)械工業(yè)出版社，2002 [12] Handbook of Machine Tools Manfred weck[J] ,2005 169–182. [13]Boyes W E. Jigs and Fixture .America,SME[J],2006 169–182. 3 畢業(yè)設(shè)計(jì)（論文）任務(wù)書(shū) 城南 學(xué)院 機(jī)械制造及自動(dòng)化 專業(yè) 11級(jí)機(jī)電 班 題 目 齒輪軸零件的機(jī)械加工工藝規(guī)程及專用夾具設(shè)計(jì) 任務(wù)起止日期： 2015年 3 月 16日～2015 年 6 月 19 日 學(xué) 生 姓 名 楊宇佳 學(xué) 號(hào) 201179250108 指 導(dǎo) 教 師 李旭宇 教研室主任 年 月 日審查 院 長(zhǎng) 年 月 日批準(zhǔn) 一、畢業(yè)設(shè)計(jì)（論文）任務(wù) 課題內(nèi)容： 根據(jù)齒輪軸零件的零件圖，分析零件的用途和特點(diǎn)，選擇合適的加工設(shè)備，編制零件的機(jī)械加工工藝規(guī)程；針對(duì)某一工序設(shè)計(jì)一套專用夾具；通過(guò)設(shè)計(jì)，了解加工零件所選用的設(shè)備、工裝及機(jī)床的切削運(yùn)動(dòng)； 課題任務(wù)要求： 1）零件生產(chǎn)綱領(lǐng)：10000件/年 2）工藝參數(shù)的確定應(yīng)有可靠的依據(jù)，說(shuō)清確定參數(shù)的方法，使用資料的來(lái)源，參數(shù)修正的原因等； 3）說(shuō)明書(shū)應(yīng)使用工程技術(shù)語(yǔ)言、國(guó)家標(biāo)準(zhǔn)規(guī)定的名詞術(shù)語(yǔ)； 3）經(jīng)濟(jì)性分析應(yīng)以分析討論為主，計(jì)算步驟可以簡(jiǎn)化； 4）繪制零件圖（一張）；繪制零件的機(jī)械加工工藝過(guò)程綜合卡片（一張）和工序卡片一套； 5）專用夾具設(shè)計(jì)（一套）；繪制專用夾具的裝配圖和主要零件圖； 。 課題完成后應(yīng)提交的資料（或圖表、設(shè)計(jì)圖紙） （1） 開(kāi)題報(bào)告 （2） 零件圖（一張）；零件的機(jī)械加工工藝過(guò)程綜合卡片（一張）和工序卡片一套 （3） 專用夾具的裝配圖和主要零件圖。 （4） 設(shè)計(jì)說(shuō)明書(shū) （5） 外文翻譯的原文和譯文 （6） 上述資料的電子文檔 主要參考文獻(xiàn)與外文翻譯文件（由指導(dǎo)教師選定） 同組設(shè)計(jì)者 注：1. 此任務(wù)書(shū)由指導(dǎo)教師填寫(xiě)。如不夠填寫(xiě)，可另加頁(yè)。 2. 此任務(wù)書(shū)最遲必須在畢業(yè)設(shè)計(jì)（論文）開(kāi)始前一周下達(dá)給學(xué)生。 3. 此任務(wù)書(shū)可從教務(wù)處網(wǎng)頁(yè)表格下載區(qū)下載 二、畢業(yè)設(shè)計(jì)（論文）工作進(jìn)度計(jì)劃表 序號(hào) 畢 業(yè) 設(shè) 計(jì)（論 文）工 作 任 務(wù) 工 作 進(jìn) 度 日 程 安 排 周次 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 文獻(xiàn)閱讀，開(kāi)題報(bào)告 - - - 2 零件分析 - - - 3 工藝規(guī)程編制 - - - 4 夾具設(shè)計(jì) - - - - - - 5 畢業(yè)設(shè)計(jì)說(shuō)明書(shū)的撰寫(xiě) - - - - 6 答辯 - 7 8 9 10 注：1. 此表由指導(dǎo)教師填寫(xiě)； 2. 此表每個(gè)學(xué)生人手一份，作為畢業(yè)設(shè)計(jì)（論文）檢查工作進(jìn)度之依據(jù)； 3. 進(jìn)度安排請(qǐng)用“一”在相應(yīng)位置畫(huà)出。 三、學(xué)生完成畢業(yè)設(shè)計(jì)（論文）階段任務(wù)情況檢查表 時(shí)間 第 一 階 段 第 二 階 段 第 三 階 段 內(nèi)容 組織紀(jì)律 完成任務(wù)情況 組織紀(jì)律 完成任務(wù)情況 組織紀(jì)律 完成任務(wù)情況 檢 查 記 錄 教師 簽字 簽字 日期 簽字 日期 簽字 日期 注：1. 此表應(yīng)由指導(dǎo)教師認(rèn)真填寫(xiě)。階段分布由各學(xué)院自行決定。 2. “組織紀(jì)律”一檔應(yīng)按《長(zhǎng)沙理工大學(xué)學(xué)生學(xué)籍管理實(shí)施辦法》精神，根據(jù)學(xué)生具體執(zhí)行情況，如實(shí)填寫(xiě)。 3. “完成任務(wù)情況”一檔應(yīng)按學(xué)生是否按進(jìn)度保質(zhì)保量完成任務(wù)的情況填寫(xiě)。包括優(yōu)點(diǎn)，存在的問(wèn)題與建議 4. 對(duì)違紀(jì)和不能按時(shí)完成任務(wù)者，指導(dǎo)教師可根據(jù)情節(jié)輕重對(duì)該生提出忠告并督促其完成。 四、學(xué)生畢業(yè)設(shè)計(jì)（論文）裝袋要求： 1. 畢業(yè)設(shè)計(jì)（論文）按以下排列順序印刷與裝訂成一本（撰寫(xiě)規(guī)范見(jiàn)教務(wù)處網(wǎng)頁(yè)）。 (1) 封面 (2) 扉 頁(yè) (3) 畢業(yè)設(shè)計(jì)（論文）任務(wù)書(shū) (4) 中文摘要 (5) 英文摘要 (6) 目錄 (7) 正文 (8) 參考文獻(xiàn) (9) 致謝 (10) 附錄（公式的推演、圖表、程序等） (11) 附件1：開(kāi)題報(bào)告（文獻(xiàn)綜述） (12) 附件2：譯文及原文影印件 2. 需單獨(dú)裝訂的圖紙（設(shè)計(jì)類）按順序裝訂成一本。 3. 修改稿（經(jīng)、管、文法類專業(yè)）按順序裝訂成一本。 4.《畢業(yè)設(shè)計(jì)(論文)成績(jī)?cè)u(píng)定冊(cè)》一份。 5．論文電子文檔[由各學(xué)院收集保存]。 學(xué)生送交全部文件日期 學(xué)生（簽名） 指導(dǎo)教師驗(yàn)收（簽名） Mechanical Parts Processing Technology and Fixture DesignPick to : the machining parts of the structure and process analysis, identified the machine-finishing craft route, fixture in the mechanical processing of the status and importance, as well as the fixture design. With the increasingly development of scientific progress and the adjustment of national industry policy, project machinery industry already became no policy barriers of perfectly competitive industryKey words: technical background / development / process / positioning scheme1 Mechanical Processing Historical Background and Its SignificanceMachinery manufacturing industry is an old and eternal industry full of vitality. With the development of modern industry, the mechanical product of the increasingly high demand, machinery manufacturing technology are developing rapidly. Since the founding of new China, our countrys manufacturing technology and manufacturing industry to obtain the considerable development, a considerable size and technical basis of mechanical industry system is formed basically. Years of reform and opening up, Chinas manufacturing industry to make full use of domestic and foreign two aspects of technological resources, there are plans to promote the technical transformation of enterprises, guide enterprises to take the road to rely on progress of science and technology, manufacturing technology, product quality and level and the economic benefit produced marked change, in order to promote the development of the national economy has made great contribution. Although our country manufacturing industry comprehensive technical level has been greatly improved, but compared with developed country, still have level sex difference. Enter the twenty-first Century, the economic development of our country s leading industry still is the manufacturing industry, especially after our country joins WTO, the worlds manufacturing center is developed from migration to Asia, China has cheap labor and the general consumer market, accordingly, industry of our country wants to develop, need to have appropriate technology and equipment support.Machinery industry is the equipment industry of national economy; it is content of science and technology of foundation; is new and high technology industrialization; is the basis of national defense building; is to achieve rapid economic growth of the important pillar; is to improve peoples living quality, provide consumer electrical products supply industry. It runs to national economy, the quality and efficiency of industrial structure adjustment and optimization is a very important role.2 The Status of Machinery Industry and Development TrendWith the development of society, all kinds of machinery and gradually applied to the various industry, whether in the agricultural, military, industrial, mechanical operation, leaving no efficiency, therefore, in some sense, the strength of a countrys economy, social status, and the development of machinery industry is close separable. The industrialized countries economic development course indicated that, without a strong equipment manufacturing industry, is impossible to achieve national economy industrialization, modernization and information 3 . At present, the equipment manufacturing industry development lag is restricting Chinas economic development and industrial upgrading of the important factors, increase structural adjustment strength, promote mechanical industry lasts, healthy, steady development, to change the mode of economic growth, improve quality of national economy whole, enhance the international competitiveness of the economy, security and national defense security has important and far-reaching meaning of.3 Of Machining Process Planning3.1 Machining Process DefinitionThe machining process is the use of mechanical processing method of change in rough shape, size, the relative position and the nature, make its become finished or semi-finished products of the whole process. Machining process directly determines the parts and the quality and performance of products, product cost, production period has great influence, is an important part of the whole process.3.2 Mechanical ProcessesThe composition of mechanical machining process of the basic unit is a process. Process and is formed by mounting, station, working steps and take the knife.The process is a group of workers, in a work of the same or simultaneously on several workpieces are completed for that part of the process. Process is the formulation of labor quota, with workers and machine tool equipment, arranging operation plan and quality testing of the basic unit.The installation is a workpiece by a fixture after the completion of the procedures.The application of switch ( or displacement) when processing machine tool ( or fixture ) processing, in a fixture, the workpiece ( or cutter ) relative to the machine tool passes through several locations in order processing, in each position is done on that part of the process, called station. The multi-station processing can reduce the times of clamping, reduce the mounting error, improve productivity.The step is processing the surface in the cutting tool and the cutting parameters ( only refers to the spindle speed and feed rate ) are the same circumstances completed part of the process.3.3 Machining Process DefinitionProducts or components manufacturing process and operation methods of the process, called process, it is the enterprise in the production of technical guidance document.3.4 Machining Process Planning Function and ContentMachining process is ready for production work mainly on the basis of. According to its raw material and semifinished product supply, machine tool adjustment, special process equipment design and manufacturing, production scheduling, allocation of labor force, and the production cost accounting.The machining process planning and organization of production, planning and scheduling based on. It can make production schedule and the corresponding scheduling, and can be connected to the scientific process, production is balanced, smooth, to realize high quality, high yield and low consumption.Machining process card and machining process card, are the two main process documents. Machining process card, is illustrated parts machining process technology files. In a single, small batch production, to machining process card guiding production, process card various projects in the preparation of more detailed. Machining process card for each process detailed formulation, used to direct workers, used for mass production parts and mass production of the important parts in the.3.5 Making The Machining Process Planning Principles and StepsUnder certain production conditions, with minimal consumption of labor and the lowest cost, according to plans processing parts that meet requirements of the drawings, is to develop the basic principle of machining process.Formulation of machining process steps are as follows:The under parts of the production program decision production type;The analysis of parts processing technology;The choice of blank type and manufacturing method;The technological process;The process design;The process documentation.4 Fixture Design4.1 Fixture Design SenseIn the machinery industry, how to guarantee the high precision of workpiece, the costs of processing and other substantive issues, has been engaged in the mechanical industry research questions, which in the design of fixture when we should consider the problems above, efficient fixture is the workpiece precision guarantee, how to make the fixture more efficient, more economical, the industry is the urgent need to resolve.With the development of society, the continuous improvement of technology, various high-tech technology gradually infiltrated into all sectors, how to use these high-tech to serve mankind, how to make full use of the technology in mechanical industry, it also requires machinery industry staff continued efforts, innovation.With the development of science and technology, and social needs of the market, the fixture design in progressive super to the flexible manufacturing system development. To date, the fixture is mechanical and electrical products manufacturing in the four indispensable tools, tool itself is already highly standardized, the user only needs to press varieties, specifications selection and procurement. While the mold and fixture and related products products, there is a need to make changes, usually belong to the special properties of the tool, mould has become an independent industry; fixture at home and abroad is also gradually form a dependent or independent small industry of machine tool industry. Combined clamp not only has the standardization, modularization, modular and other contemporary advanced design ideas, and in line with resource conservation principle, more suitable for green manufacturing environment protection principle. So the next fixture technology is an important direction of development unit.Machine tool fixture is usually refers to the use of clamping workpiece clamping device: for the device with various tools, also known as tool. The auxiliary tool is sometimes generalized to include in the range of machine tool fixture. According to the application range of machine tool fixture, generally can be divided into general jig, fixture and adjustable fixture.Universal jig is on general machine tools are generally accompanied by a common fixture, such as a lathe chuck, milling machine rotary table, dividing head, top seat. They have a standardized, with certain universality, can be used to install certain shape and size within the range of the workpiece without the need for special adjustment. However, in actual production, a universal fixture often can not meet the needs of various parts processing; or because of low productivity and must have the universal fixture for proper improvement; or because the shape of the workpiece, the processing requirements to be different specialized design and manufacture of a special jig, in order to solve the actual production needs.Jig is adapted to a workpiece in a processing requirements and the design and manufacturing expertise, its function mainly has the following several aspects: 1 ensure that the surface of the workpiece being processed mainly includes processing workpieces need maneuvering time of loading and unloading workpieces need the auxiliary time of two part. 2 using a dedicated fixture, workpiece installation and conversion work work can be greatly simplified, no longer need to draw the line and to find it, to shorten the working procedure non-cutting time and save line drawing this process, thereby improving the labor productivity. In production due to the adoption of multiple parallel processing workpiece fixture, enabling the simultaneous processing several parts of the motor will time and processing time of the same motor. The rotary multi-station continuous processing fixture, can be used for machining a workpiece at the same time, other workpiece loading and unloading, thereby enabling the auxiliary time and motor time coincides. In short, with the special fixture using and further improvement, can effectively shorten the process time, production to meet the evolving needs of. 3 using a dedicated fixture can expand the scope of machine tool technology. For example in lathe boring jig attached, can replace boring work; special fixture can be installed after turning the molding surface, so as to give full play to the role of general machine tools. 4, reduce the labor intensity, and ensuring safety production. According to the demand of production, using pneumatic, hydraulic or other mechanical changes, a higher degree of automation of the special fixture, to reduce the labor intensity of workers, protection of production safety and the stability of product quality and high yield of a great role. Processing large workpieces, such as the lathe bed, the lower surfaces of the screw holes on the bed, need to flip several times for processing workpieces, high labor intensity and safety. The use of electric rotary drill furniture, can improve production efficiency, reduce labor intensity, ensure safety in production.4.2 Fixture of The Development TrendIndustrial design is the development of human society and the progress of science and technology of the product, from Maurices the arts and Crafts Movement, to the German Bauhaus design revolution and the United States of America wide dissemination and promotion, industrial design after brewing, exploration, formation, development history of more than 100 years of vicissitudes. Today, industrial design has become an independent subject, and a complete set of research system.In 1980 the International Council of societies of industrial design ( ICSID ) to the industry as a clearly defined: production of industrial products, by training, technical knowledge, experience and visual experience, and indicates the material, structure, morphology, structure, color, surface processing, decoration to the new quality and specification, called industrial design. According to the specific circumstances of the time, industrial designer in the industry products are all side or a few aspects of the work, but also the need for industrial designers of packaging, publicity, display, market development and other issues to resolve pay their own technical knowledge and experience and ability of the visual evaluation, which also belongs to the scope of industrial design.Material, structure, technology is the product design material and technical basis, on one hand, technology restrict the design; on the other hand, technology is also promoting design. From the point of view of design aesthetics, technology is not only the material basis but also has its own function action, as long as good application properties of the materials, to the corresponding structure and suitable processing technology, can create a practical, aesthetic, economic products, namely in the product technology potential function.Any design are the product of the times, its different features, different features reflect the different historical periods of level of science and technology. Technology is the product of the morphological development of the pilot, new material, new technology products, is bound to bring new structure, new forms and new style. Materials, processing technology, structure, product image organic ground is contacted together, a part of the change, it will cause the whole body changes.Now, the machining process and fixture with the development of manufacturing technology also make a spurt of progress. Machining process to the various factories in different circumstances, its processing procedures are very different. Break through the past death mode. Make it with different cases has more reasonable technological process. So that product quality greatly improved. Develop processing technology can be rational, but also to meet the basic requirements: guarantee product quality under the premise, as far as possible to improve labor productivity and reduce the processing cost. And to make full use of the existing factory production conditions, as far as possible, using domestic and foreign advanced technology and experience. Should also ensure that the good working conditions. But our country present stage still rely mainly on technology personnel experience to prepare process, often does not require step and cutting amount, man-hour quota is to be determined by experience, very rough, the lack of scientific basis, difficult to carry out reasonable economic accountingInternational Journal of production Research Association statistics show that, at present, small batch production of many varieties of workpiece varieties accounted for about 85% of the total number of the kind of workpiece. Modern manufacturing requirements of enterprises manufacturing products constantly upgrading, to meet the needs of the market and competition. However, the general enterprises are still accustomed to the traditional special fixture, generally in the medium having a production capacity of the plant, some have thousands or even nearly 10000 sets of special fixture; on the other hand, in the production of many varieties of the company, every 3 to 4 years to update 50 80% special jig, fixture actual wear only 10 20% or so. Especially in recent years, CNC machine tools, machining center, group technology, flexible manufacturing system ( FMS ), a new processing technology of machine tool fixture, proposed the following new requirements:1) can rapidly and conveniently and equipment of new products put into production, so as to shorten the production cycle, reduce the production cost;2) capable of clamping a group with similar characteristics of the workpiece;3) can be applied to precision machining of high precision machine tool fixture;4) can be applied to all the modern manufacturing technology of new machine tool fixture;5) adopts the hydraulic station for power efficient clamping device, in order to further reduce the labor intensity and improve labor productivity;6) improve the standardization degree of machine tool fixture.The development trend of modern machine tool fixture mainly for standardization, efficiency, precision and flexibility in four aspects.Use better fixture, can improve labor productivity, improve processing accuracy, reduce waste, machine tool technology can expand the scope, improve the operation of labor conditions. Therefore, the fixture machinery manufacturing is an important process equipment. A good fixture is the processing of qualified products of the first condition, in order to allow the clamp has the better development, fixture industry should strengthen the production, learning and research, collaborative efforts, accelerate the use of high technology to transform and upgrade the level of technology to create the pace of jig, fixture professional technology website, make full use of modern information and network technology, and when in keeping with the innovation and development of fixture technology. Active and foreign fixture manufacturer, for joint venture and cooperation, the introduction of technology, it is the reform and development of our country industry is more effective ways of fixture.