348 8英寸鋼管熱浸鍍鋅自動生產(chǎn)線設(shè)計

348 8英寸鋼管熱浸鍍鋅自動生產(chǎn)線設(shè)計,英寸,鋼管,鍍鋅,自動生產(chǎn)線,設(shè)計 天津科技大學(xué) 2007 屆本科生畢業(yè)設(shè)計摘 要本次設(shè)計的題目是 8 英寸鋼管熱浸鍍鋅自動生產(chǎn)線設(shè)計。它是根據(jù)熱鍍鋅工藝的要求而設(shè)計的。包括工件運輸、工件檢驗、酸洗、清水洗、涂溶劑、烘干、熱浸鍍、引出外吹、內(nèi)吹、冷卻、鈍化、打印、包裝等工序。其中熱浸鍍、鈍化是特殊工序；酸洗、涂溶劑是關(guān)鍵工序。本次設(shè)計中，我具體負責(zé)鍍鋅機橫移機的設(shè)計。在說明書中，我詳細介紹了鋼管熱浸鍍鋅自動生產(chǎn)線設(shè)備設(shè)計，以及橫移機的相關(guān)計算，如軸的校核，螺紋聯(lián)接的強度計算等，來滿足保證設(shè)計要求。同時在說明書中也附有大量的圖示以展示重要機構(gòu)，說明其具體結(jié)構(gòu)和它們之間的裝配關(guān)系。說明書中還介紹了關(guān)于這臺設(shè)備所要注意的環(huán)境保護等方面的問題。關(guān)鍵詞： 鋼管； 熱鍍鋅； 自動生產(chǎn)線； 橫移機 天津科技大學(xué) 2007 屆本科生畢業(yè)設(shè)計ABSTRACTThe paper is written on the topic of design for steel pipe of hot zinc plating automatic product equipment. It is base on the hot zinc plating technics including workpiece , transportation ,work inspection, pickling, washing ,making inpregnent,, drying, hot plating, draw out, postartum mastitis ,passivation, cooling, printing, packaging. The hot zinc plating and passivation, are the special working procedure, pickling and making inpregnent are pretty crucial work procedure. I take charge of the traverse motion machine designing. Steel pipe of hot zinc plating automatic product equipment is introduced in detail in the paper. The important framework are exemplified to show their interaction and we also concentrate on the environment protecting.Keywords: Steel pipe; Hot galvanizing; Automatic product equipment; Traverse motion machine天津科技大學(xué)實習(xí)報告1實 習(xí) 報 告今天我們開始了 07 屆畢業(yè)生專業(yè)實習(xí)參觀，早上 8 點我們坐上車首先來到了天津北星汽車廠。該廠外表不大但是給人的感覺很干凈很氣派，幾座大大的倉庫式廠房。進入了該廠后幾排整齊的奔馳轎車給人感覺更是氣派。該廠主要致力于為東北、華北地區(qū)的奔馳汽車經(jīng)銷商以及擁護提供零配件后備支持、車輛維修服務(wù)、整車售前檢測以及整車銷售服務(wù)。 北京北星行汽車銷售中心是專門從事奔馳汽車銷售咨詢、銷售服務(wù)的專業(yè)公司。公司系北星（天津）汽車有限公司的附屬機構(gòu)，是德國奔馳公司在中國長江以北地區(qū)唯一授權(quán)代理銷售奔馳汽車全線車型的公司。我們致力于把奔馳汽車及其國際化標準的銷售服務(wù)理念引入中國。公司總部位于燕莎商圈。第一分部燕莎展廳毗鄰豪華飯店、使館區(qū)，悠久的歷史，便捷的交通，專業(yè)的銷售人員、力求為顧客提供最優(yōu)質(zhì)的服務(wù)。剛剛建成開業(yè)的盈科展廳是目前中國最大的奔馳汽車展示中心，整體造型及內(nèi)部裝飾均采用德國奔馳的設(shè)計風(fēng)格，集展示、洽談、精品收藏等多種功能。格調(diào)高雅、充滿現(xiàn)代感，是一座代表國際最新汽車服務(wù)方式的展示和銷售場所。公司采用立體的經(jīng)營管理模式，配備高素質(zhì)、專業(yè)化和國際化的人才隊伍，以完善客戶服務(wù)為首要目標，為客戶提供"售前、售中、售后"一站式全程貴賓服務(wù)。我們進入了廠房車車間后，更是眼前一亮這里就是奔馳汽車的檢測車間，奔馳汽車是模塊化設(shè)計，工人師傅們用電腦連接各個模塊后電腦自動監(jiān)測各個模塊的運行情況然后返回數(shù)據(jù)，有問題的數(shù)據(jù)都會用問號來表示。不禁使我感覺到現(xiàn)代化生產(chǎn)的強大，同時也為國外汽車強大的研發(fā)能力感嘆。還有一項檢測就是左右論壇距離的測量，把汽車開到檢測機器上然后使汽車的輪胎運行，儀器表上的指針就是很清楚的表示出各個論壇的運行情況跟兩個輪胎的間距是天津科技大學(xué)實習(xí)報告2否合格。當工人師傅為我們演示奔馳汽車的性能時，我突然覺得我們國家的汽車比起外國還是有一定的差距。首先當 V12 發(fā)動器啟動的時候我?guī)缀趼牪坏绞裁绰曇?，而且汽車做到了全自動化比如安裝了 GPS,電視，音響，全自動儀表，全新的檔位設(shè)計更加合理，夜間行車更是方便，幾乎可以從小電視中看清所有路況免除了汽車道上復(fù)雜的夜間情況，舒適的座椅不但可以前后移動更可以上下全方位移動，我想坐上此車感覺肯定舒適無比。參觀完汽車后我們又看了一些北星汽車的文化他們的文化底蘊繼承了奔馳汽車的高貴傳統(tǒng)他們代表了先進。離開了北星（天津）汽車，我戀戀不舍，此廠帶給我的不僅是視覺的享受，更是機械汽車行業(yè)前進的方向那就是現(xiàn)代化，高科技。為了對熱浸鍍鋅有更深的認識，我們又學(xué)習(xí)了很多關(guān)于鍍鋅的知識。熱鍍鋅板作為深加工產(chǎn)品，具有抗腐蝕性能強、使用壽命長、外觀美觀的特點，在汽車、輕工、建筑、家居等行業(yè)具有廣泛的應(yīng)用前景，是十余年來發(fā)展最快的鋼材品種之一。1995年世界鍍鋅板產(chǎn)量己超過5000萬噸，從世界鋼材品種結(jié)構(gòu)看，鍍鋅板約占鋼材總產(chǎn)量7%-8%，發(fā)達國家占15%以上，而我國2002年鍍鋅板產(chǎn)量卻僅占鋼材總產(chǎn)量的1.3%。世界發(fā)達國家鍍鋅板的生產(chǎn)量占到冷軋產(chǎn)品的60%左右，而我國只有30%。到目前為止，我國己建成15條鍍鋅機組生產(chǎn)線，我國2002年鍍鋅板產(chǎn)量為227萬噸，而2001年國內(nèi)鍍鋅板的表觀消費量達到了428萬噸(2000年為374萬噸)，隨著我國國民經(jīng)濟的不斷發(fā)展和人民生活水平的不斷提高，市場對鍍鋅產(chǎn)品的需求和要求也越來越高。盡管我國熱鍍鋅產(chǎn)品市場容量及前景較為可觀，但是，目前中國國內(nèi)己建有多條熱鍍鋅機組，正在籌建和上馬的熱鍍鋅機組也己超過10條。根據(jù)近年鋼材消費趨勢預(yù)測，2005年我國鍍鋅板表觀消費量將超過500萬噸，考慮到國內(nèi)鋼鐵企業(yè)新建項目的達產(chǎn)情況及設(shè)備開工率情況，預(yù)計“十五”末期，國內(nèi)鍍鋅板產(chǎn)量將達到460萬噸左右。在鍍鋅產(chǎn)品領(lǐng)域，國外鋼鐵企業(yè)全方位領(lǐng)先我們，進口產(chǎn)品始終占據(jù)著中國鍍鋅產(chǎn)品市場的半壁江山(我國鍍鋅板的自給率僅為45%右)。隨著國內(nèi)鍍鋅產(chǎn)品產(chǎn)量的急劇增長和國外產(chǎn)品的大量涌入，未來中國鍍鋅板產(chǎn)品的市場競爭將會非常激烈。在生產(chǎn)實踐中向鋅液中投入定量的鋁會明顯的改善鋅層的附著性，鋅液中含有一定量的鋁會明顯改善鍍鋅層的結(jié)構(gòu)，F(xiàn)e5ZnZ:合金層減少，在溫度、鍍鋅時間的綜合影響下，會優(yōu)先在鋼基表面上形成Fe,Al。中間層。均質(zhì)的Fe,Al。中間層牢固地附著在鋼基表面，作為粘附鍍層的媒介，對提高鋅層附著性起著至關(guān)重要的作用。連續(xù)熱鍍鋅生產(chǎn)工藝的流程為：開卷，焊接，連續(xù)退火，熱鍍鋅，鍍后處理，卷取或切版。熱鍍鋅板卷是冷軋主要產(chǎn)品之一，由于該產(chǎn)品抗腐蝕性能好，外觀美觀等天津科技大學(xué)實習(xí)報告3眾多優(yōu)點，在國內(nèi)、外各行業(yè)中得到廣泛的應(yīng)用。近年來，隨著國內(nèi)熱鍍鋅機組的陸續(xù)建成、投產(chǎn)，國外鍍鋅產(chǎn)品的打入，使國內(nèi)鍍鋅產(chǎn)品市場競爭日益激化，這種競爭的特點主要表現(xiàn)為五個特點:其一，競爭己無國界概念;其二，產(chǎn)品質(zhì)量不斷提高、價格下降;其三，產(chǎn)品系列化及新產(chǎn)品不斷推出;其四，隨著技術(shù)發(fā)展，產(chǎn)品實物質(zhì)量己普遍得到大幅度的提高;其五，消費者日益成熟，消費觀念日益更新。這種形勢迫使每一個生產(chǎn)廠家不但要有自己的拳頭產(chǎn)品，同時還要不斷研發(fā)市場需要的新產(chǎn)品。主要結(jié)論為：通過對于國內(nèi)外熱鍍鋅生產(chǎn)線的研究，鍍鋅生產(chǎn)線上的深入討論以及在實驗室中對于熱軋板工藝的模擬，得出以下結(jié)論:(1)現(xiàn)在最流行的板帶熱鍍鋅工藝是森吉米爾法和美鋼聯(lián)法。它們的主要區(qū)別是美鋼聯(lián)法用一個堿性電解槽代替氧化爐的脫脂作用，其余工序和森吉米爾法基本相同，它特別適用于生產(chǎn)表面油脂較多的冷軋板。而現(xiàn)在森吉米爾法也經(jīng)常在加熱爐前使用堿洗設(shè)備，所以熱軋板熱鍍鋅生產(chǎn)線應(yīng)采用森吉米爾法，它具有優(yōu)質(zhì)，高效，安全等特點。(2)在森吉米爾法工藝條件下，經(jīng)實驗室研究證明熱軋板的鍍層結(jié)構(gòu)與冷軋板沒有明顯區(qū)別，熱軋板鍍鋅時間的增加不會造成有害的鐵鋅合金層的產(chǎn)生。這使得熱軋板有充分的時間生成良好的鐵鋁合金層。(3)由于熱軋板一般比冷軋板較厚，熱軋板鍍鋅線設(shè)備除了強度較大外，還應(yīng)注意:焊機應(yīng)具有焊接厚鋼板的能力;活套和加熱爐應(yīng)采用臥式;由于熱軋板一般不用退火，所以熱軋板生產(chǎn)線可以采用不帶冷卻段的加熱系統(tǒng)。(4)目前板帶熱鍍鋅的一些先進設(shè)備有液壓式開卷機和卷取機，堿洗系統(tǒng)，預(yù)熱爐，帶弧性的氣刀，四輥濕式平整機，拉矯機等。通過本次實習(xí)不僅使我對鍍鋅工藝有了更具體的了解與認識，更使我看到目前機械行業(yè)對人才和先進設(shè)備的需求，這也就更加深了我畢業(yè)后投身機械行業(yè)的信心與決心。畢業(yè)實習(xí)報告專 業(yè)：機械設(shè)計制造及自動化姓 名：王景凱指導(dǎo)教師姓名：申請學(xué)位級別：學(xué) 士報告提交日期：2007 年 月 日學(xué)位授予單位：天津科技大學(xué) 天津科技大學(xué)本科生畢業(yè)設(shè)計（論文）開題報告學(xué) 院 天津科技大學(xué)機械工程學(xué)院 專 業(yè) 機械設(shè)計制造及自動化 題 目 8 英寸鋼管熱浸鍍鋅自動生產(chǎn)線設(shè)計 （子題目：鋼管熱浸鍍鋅生產(chǎn)線機橫移機設(shè)計）姓 名 王景凱 指 導(dǎo) 教 師 （ 簽名） 2007 年 3 月 18 日擬選題目 8 英寸鋼管熱浸鍍鋅自動生產(chǎn)線設(shè)計——鍍鋅鋼管橫移機設(shè)計選題依據(jù)及研究意義：熱鍍鋅是鋼鐵最經(jīng)濟、最基本、應(yīng)用最普遍的防腐方法之一，廣泛應(yīng)用于經(jīng)濟建設(shè)中的各個領(lǐng)域，如絲、管、板、帶，鋼結(jié)構(gòu)件等。近年來，隨著基礎(chǔ)建設(shè)的加速，鍍鋅鋼板、高速公路鍍鋅護欄和鍍鋅郵電鐵塔的發(fā)展勢頭強勁。這些行業(yè)的發(fā)展大大推動了熱鍍鋅行業(yè)的發(fā)展。但是，目前我國的熱鍍鋅工藝水平較低，鋅耗高、產(chǎn)品質(zhì)量差、環(huán)境污染嚴重。本項目全面優(yōu)化熱鍍鋅工藝，可大大提高我國的熱鍍鋅水平，使之接近目前國際水平。鋅耗由目前噸產(chǎn)品的 7%降至 5%，產(chǎn)品質(zhì)量大幅度提高，環(huán)境污染減輕。可見，研究與解決金屬腐蝕問題在發(fā)展經(jīng)濟、節(jié)約能源、防止污染、保證人與自然協(xié)調(diào)共存等方面都有十分重要的意義和作用。因此，本課程設(shè)計符合市場及技術(shù)經(jīng)濟的需求，對我國工業(yè)的發(fā)展有著重要的意義。鍍鋅鋼板廣泛地用于輕工、家電、汽車和建筑行業(yè)。在汽車工業(yè)中，用于汽車車體、外殼、內(nèi)板、底板等；在家電和輕工方面，用于各類家用電器的外殼和底板；在建筑業(yè)中，用于各類工業(yè)及民用建筑的輕鋼龍骨、建筑層面板、瓦楞板、卷簾門等。長期以來中國鍍鋅板一直屬于短線產(chǎn)品，1988-2002年，中國鍍鋅板生產(chǎn)及表觀消費量，多年來中國鍍鋅板的自給率約為50％，每年需要大量進口。鋼管熱鍍鋅生產(chǎn)線的設(shè)計作為畢業(yè)設(shè)計課題，其覆蓋面較廣，涉及到機、電、氣、制冷等一體化技術(shù)以及專業(yè)課程等知識，在這個過程中，我們不但提高了自己的繪圖能力，也提高了我們的分析能力和解決實際問題的能力。文獻綜述（對已有相關(guān)代表性研究成果的綜合介紹與評價）：經(jīng)過三周的文獻檢索，展覽會的參觀，我對金屬熱鍍鋅的生產(chǎn)有了進一步的了解。金屬材料在工農(nóng)業(yè)上用的最多的是鋼鐵材料。但鋼鐵材料耐腐蝕性能比較差。熱鍍鋅是防止鋼鐵生銹的一種方法，是公認的高性價比鋼鐵制品防護方法。焊接鋼管的熱鍍鋅技術(shù)國外在六、七十年代已經(jīng)得到比較廣泛的應(yīng)用。由于鋅層能夠保護鋼基體不受腐蝕，鍍鋅管比未鍍鋅的黑管壽命可延長十幾倍，因而，已廣泛用于鋼鐵的保護。如用于建筑、石油、化工、造船和電力等領(lǐng)域。焊接鋼管的熱鍍鋅技術(shù)國外在六、七十年代已經(jīng)得到比較廣泛的應(yīng)用。由于鋅層能夠保護鋼基體不受腐蝕，鍍鋅管比未鍍鋅的黑管壽命可延長十幾倍，因而，被廣泛用于建筑、石油、化工、造船和電力等領(lǐng)域。為了改善鋼管熱浸鍍鋅生產(chǎn)環(huán)境，提高鍍鋅鋼管質(zhì)量，我國開始了研發(fā)鋼管熱浸鍍鋅生產(chǎn)線。該生產(chǎn)線采用新穎的液壓機械手浸鍍，以取代傳統(tǒng)的結(jié)構(gòu)龐大的轉(zhuǎn)耙式與螺旋式鍍鋅機構(gòu)，不僅簡化了熱鍍鋅管生產(chǎn)機構(gòu)，改進了鍍鋅工藝，而且提高了鍍鋅管質(zhì)量，降低了生產(chǎn)成本。目前，美、日大規(guī)模生產(chǎn)熱軋帶鋼鍍鋅板，并已與冷軋鍍鋅板平分天下。可以相信，由于熱軋鍍鋅板的低成本，其市場前景非常廣闊。研究內(nèi)容（包括基本思路、框架、主要研究方式、方法等）：鍍鋅設(shè)備為 SDX 雙線鍍鋅機組，本機采用微機全自動控制。工藝流程：工件運輸、檢驗、酸洗、清水洗、涂溶劑、烘干、熱浸鋅、引出外吹、內(nèi)吹、冷卻、鈍化、檢驗、打印、包裝、入庫。其中，關(guān)鍵工序為：酸洗、涂溶劑；特殊工序為：熱浸鋅、鈍化。1．鋼管酸洗：（1）采用鹽酸酸洗：配置含量為 15-18﹪濃度的酸洗液（或濃度為 100-170 克的稀鹽酸） 。首先將清水放入酸洗槽中，然后加入足量的鹽酸；往水中放入鹽酸時，一定要把放酸的膠管插入水中，防止鹽酸氣體的發(fā)揮，污染空氣。（2）當酸液中鹽酸的含量低于 100 克/升時，可加入新鹽酸進行調(diào)配，以保證酸洗速度。（3）酸洗液的溫度應(yīng)保持在 8℃-35℃，鹽酸不宜加溫縮短酸洗時間，而宜增加其濃度提高酸洗速度。（4）酸洗時間可根據(jù)鋼管的銹蝕程度、酸液濃度、溫度等情況決定。（5）酸液中氯化鐵（鐵鹽）含量最多不得超過 200 克/升，當鐵鹽含量大于 150克/升小于 200 克/升時，應(yīng)停止往酸洗槽中加入新酸。（6）當鐵鹽超過 200 克/升濃度低于 20 克/升時應(yīng)排放，重新配置新的酸液。（7）雨季或空氣濕度大時，會產(chǎn)生酸霧，惡化空氣環(huán)境，要加入酸霧抑制劑，抑制酸霧或使用萘磺酸甲醛縮合物封閉酸液面。（8）為防止鋼管局部欠酸洗，增加酸洗速度，要在酸洗期間勤翻動鋼管，使之產(chǎn)生摩擦，多接觸酸液，酸洗后的鋼管表面應(yīng)呈銀亮色。2. 涂溶劑涂溶劑的目的是：防止在烘干過程中鐵基體接觸空氣而再次氧化生銹；清除掉鋼管表面上殘留的鐵鹽及其他污物；使鋼管表面的鐵基體于鋅液更快的形成合金。鋼管鍍鋅烘干后的鋼管經(jīng)過鍍鋅機自動運轉(zhuǎn)，進入鋅液，鋼管在鋅液中排放管內(nèi)的氣體，經(jīng)過浸鋅，形成牢固的鋅鐵合金層，再經(jīng)過提升、引出就完成了鋼管鍍鋅。在正常情況下鋅液溫度范圍應(yīng)保持在 450℃（+5℃或-5℃）為改善鋅層韌性極鋅液流動性和光潔度，鋅液中的含鋅量應(yīng)保持在 0.2-0.3﹪之間。鋅液中加鋁要以鋅鋁合金方式加入。內(nèi)吹時，必須使鋼管內(nèi)壁吹凈不得有余鋅。往鋅液中加鋅塊時，要分多次添加，不要一次集中添加，一次不得超過 15 塊，以保證鋅液的溫度和設(shè)備的正常運轉(zhuǎn)，同時保證正常鋅液面高。對于往鋅液中投放鋅鋁合金，一般是每下一噸鋅就要投相配量的鋅鋁合金，以保證鋅液的含鋁量在 0.2-0.3﹪之間。鍍鋅生產(chǎn)過程中，在鋅液面產(chǎn)生的鋅灰，不要產(chǎn)生很多時再清除。研究進程安排：3.5 —3.14 收集相關(guān)論文資料和參考文獻，完成翻譯工作。3.15 —3.30 完城實習(xí)報告和開題報告。4.1 —5.10 進行零件，部件，總裝的草圖。 5.11 —5.25 完成結(jié)構(gòu)設(shè)計圖紙。5.26 —6.5 整理完成設(shè)計說明書。6.6 —6.25 準備并參加答辯。主要參閱文獻：[1]王義生．國外鋼管熱鍍鋅生產(chǎn)[M]．冶金工業(yè)出版社．[2]楊廷力．機械系統(tǒng)基本理論一結(jié)構(gòu)學(xué)、運動學(xué)、動力學(xué)．北京：機械工業(yè)出版社，1996[2]陳厚載．熱鍍鋅技術(shù) 1000 例[M]．上海交大出版社．[3]吳作明等．熱鍍鋅、電鍍鋅及鋅合金創(chuàng)新生產(chǎn)工藝實用全書．北方工業(yè)出版社，2OOO(16)[4]李九齡 帶鋼連續(xù)熱鍍鋅（第 2 版） ．冶金工業(yè)出版社，2002(14)[5]凌全偉，劉建秋．熱鍍鋅技術(shù)的現(xiàn)狀及發(fā)展[J] ．鞍鋼技術(shù)，2004(2)[6]孔綱，盧錦堂，陳錦紅等．熱浸鋅浴中少量鋁對鍍層的影響[J]．材料保護，2002(35)[7]朱立．鋼材熱鍍鋅：化學(xué)工業(yè)出版社，1996其它說明：市場前景:全國每年大約有 1000 萬噸鍍鋅產(chǎn)品，如果每噸產(chǎn)品節(jié)鋅 2%，每年可節(jié)鋅 20 萬噸，價值 20 億元。加之由于提高產(chǎn)品質(zhì)量，降低環(huán)境污染帶來的效益，這個市場更加巨大。指導(dǎo)教師是否同意開題簽名: 年 月 日系（教研室）教學(xué)負責(zé)人簽署簽名: 年 月 日說明：1、開題報告工作從第七學(xué)期學(xué)生確定畢業(yè)設(shè)計（論文）題目后開始，在教師指導(dǎo)下，學(xué)生通過調(diào)研、收資后，于第八學(xué)期第四周前完成。2、紙張?zhí)顚懖粔蚩闪砑痈巾?。天津科技大學(xué)外文資料翻譯1數(shù)控技術(shù)和裝備發(fā)展趨勢及對策 裝備工業(yè)的技術(shù)水平和現(xiàn)代化程度決定著整個國民經(jīng)濟的水平和現(xiàn)代化程度，數(shù)控技術(shù)及裝備是發(fā)展新興高新技術(shù)產(chǎn)業(yè)和尖端工業(yè)（如信息技術(shù)及其產(chǎn)業(yè)、生物技術(shù)及其產(chǎn)業(yè)、航空、航天等國防工業(yè)產(chǎn)業(yè)）的使能技術(shù)和最基本的裝備。馬克思曾經(jīng)說過“各種經(jīng)濟時代的區(qū)別，不在于生產(chǎn)什么，而在于怎樣生產(chǎn)，用什么勞動資料生產(chǎn)” 。制造技術(shù)和裝備就是人類生產(chǎn)活動的最基本的生產(chǎn)資料，而數(shù)控技術(shù)又是當今先進制造技術(shù)和裝備最核心的技術(shù)。 當今世界各國制造業(yè)廣泛采用數(shù)控技術(shù)，以提高制造能力和水平，提高對動態(tài)多變市場的適 應(yīng)能力和競爭能力。此外世界上各工業(yè)發(fā)達國家還將數(shù)控技術(shù)及數(shù)控裝備列為國家的戰(zhàn)略物資，不僅采取重大措施來發(fā)展自己的數(shù)控技術(shù)及其產(chǎn)業(yè)，而且在“高精尖”數(shù)控關(guān)鍵技術(shù)和裝備方面對我國實行封鎖和限制政策?？傊?，大力發(fā)展以數(shù)控技術(shù)為核心的先進制造技術(shù)已成為世界各發(fā)達國家加速經(jīng)濟發(fā)展、提高綜合國力和國家地位的重要途徑。數(shù)控技術(shù)是用數(shù)字信息對機械運動和工作過程進行控制的技術(shù)，數(shù)控裝備是以數(shù)控技術(shù)為代表的新技術(shù)對傳統(tǒng)制造產(chǎn)業(yè)和新興制造業(yè)的滲透形成的機電一體化產(chǎn)品，即所謂的數(shù)字化裝備，其技術(shù)范圍覆蓋很多領(lǐng)域：(1)機械制造技術(shù)；(2)信息處理、加工、傳輸技術(shù)；(3)自動控制技術(shù)；(4)伺服驅(qū)動技術(shù)；(5)傳感器技術(shù)；(6)軟件技術(shù)等。1 數(shù)控技術(shù)的發(fā)展趨勢數(shù)控技術(shù)的應(yīng)用不但給傳統(tǒng)制造業(yè)帶來了革命性的變化，使制造業(yè)成為工業(yè)化的象征，而且隨著數(shù)控技術(shù)的不斷發(fā)展和應(yīng)用領(lǐng)域的擴大，他對國計民生的一些重要行業(yè)（IT、汽車、輕工、醫(yī)療等）的發(fā)展起著越來越重要的作用，因為這些行業(yè)所需裝備的數(shù)字化已是現(xiàn)代發(fā)展的大趨勢。從目前世界上數(shù)控技術(shù)及其裝備發(fā)展的趨勢來看，其主要研究熱點有以下幾個方面［1～4］ 。1．1 高速、高精加工技術(shù)及裝備的新趨勢效率、質(zhì)量是先進制造技術(shù)的主體。高速、高精加工技術(shù)可極大地提高效率，提高產(chǎn)品的質(zhì)量和檔次，縮短生產(chǎn)周期和提高市場競爭能力。為此日本先端技術(shù)研究會將其列為 5 大現(xiàn)代制造技術(shù)之一，國際生產(chǎn)工程學(xué)會（CIRP）將其確定為 21 世紀的中心研究方向之一。在轎車工業(yè)領(lǐng)域，年產(chǎn) 30 萬輛的生產(chǎn)節(jié)拍是 40 秒/輛，而且多品種加工是轎車裝備必須解決的重點問題之一；在航空和宇航工業(yè)領(lǐng)域，其加工的零部件多為薄壁和薄筋，剛度很差，材料為鋁或鋁合金，只有在高切削速度和切削力很小的情況下，才能對這些筋、壁進行加工。近來采用大型整體鋁合金坯料“掏空”的方法來制造機翼、機身等大型零件來替代多個零件通過眾多的鉚釘、天津科技大學(xué)外文資料翻譯2螺釘和其他聯(lián)結(jié)方式拼裝，使構(gòu)件的強度、剛度和可靠性得到提高。這些都對加工裝備提出了高速、高精和高柔性的要求。從 EMO2001 展會情況來看，高速加工中心進給速度可達 80m/min，甚至更高，空運行速度可達 100m/min 左右。目前世界上許多汽車廠，包括我國的上海通用汽車公司，已經(jīng)采用以高速加工中心組成的生產(chǎn)線部分替代組合機床。美國 CINCINNATI 公司的 HyperMach 機床進給速度最大達 60m/min，快速為100m/min，加速度達 2g，主軸轉(zhuǎn)速已達 60 000r/min。加工一薄壁飛機零件，只用 30min，而同樣的零件在一般高速銑床加工需 3h，在普通銑床加工需 8h；德國 DMG 公司的雙主軸車床的主軸速度及加速度分別達 12*!000r/mm 和 1g。在加工精度方面，近 10 年來，普通級數(shù)控機床的加工精度已由 10μm 提高到 5μm，精密級加工中心則從 3～5μm，提高到 1～1.5μm，并且超精密加工精度已開始進入納米級(0.01μm)。在可靠性方面，國外數(shù)控裝置的 MTBF 值已達 6 000h 以上，伺服系統(tǒng)的MTBF 值達到 30000h 以上，表現(xiàn)出非常高的可靠性。為了實現(xiàn)高速、高精加工，與之配套的功能部件如電主軸、直線電機得到了快速的發(fā)展，應(yīng)用領(lǐng)域進一步擴大。1.2 5 軸聯(lián)動加工和復(fù)合加工機床快速發(fā)展采用 5 軸聯(lián)動對三維曲面零件的加工，可用刀具最佳幾何形狀進行切削，不僅光潔度高，而且效率也大幅度提高。一般認為，1 臺 5 軸聯(lián)動機床的效率可以等于 2 臺 3 軸聯(lián)動機床，特別是使用立方氮化硼等超硬材料銑刀進行高速銑削淬硬鋼零件時，5 軸聯(lián)動加工可比 3 軸聯(lián)動加工發(fā)揮更高的效益。但過去因 5 軸聯(lián)動數(shù)控系統(tǒng)、主機結(jié)構(gòu)復(fù)雜等原因，其價格要比 3 軸聯(lián)動數(shù)控機床高出數(shù)倍，加之編程技術(shù)難度較大，制約了 5 軸聯(lián)動機床的發(fā)展。當前由于電主軸的出現(xiàn)，使得實現(xiàn) 5 軸聯(lián)動加工的復(fù)合主軸頭結(jié)構(gòu)大為簡化，其制造難度和成本大幅度降低，數(shù)控系統(tǒng)的價格差距縮小。因此促進了復(fù)合主軸頭類型 5 軸聯(lián)動機床和復(fù)合加工機床（含 5 面加工機床）的發(fā)展。在 EMO2001 展會上，新日本工機的 5 面加工機床采用復(fù)合主軸頭，可實現(xiàn)4 個垂直平面的加工和任意角度的加工，使得 5 面加工和 5 軸加工可在同一臺機床上實現(xiàn)，還可實現(xiàn)傾斜面和倒錐孔的加工。德國 DMG 公司展出 DMUVoution系列加工中心，可在一次裝夾下 5 面加工和 5 軸聯(lián)動加工，可由 CNC 系統(tǒng)控制或 CAD/CAM 直接或間接控制。1.3 智能化、開放式、網(wǎng)絡(luò)化成為當代數(shù)控系統(tǒng)發(fā)展的主要趨勢21 世紀的數(shù)控裝備將是具有一定智能化的系統(tǒng)，智能化的內(nèi)容包括在數(shù)控系統(tǒng)中的各個方面：為追求加工效率和加工質(zhì)量方面的智能化，如加工過程的自適應(yīng)控制，工藝參數(shù)自動生成；為提高驅(qū)動性能及使用連接方便的智能化，天津科技大學(xué)外文資料翻譯3如前饋控制、電機參數(shù)的自適應(yīng)運算、自動識別負載自動選定模型、自整定等；簡化編程、簡化操作方面的智能化，如智能化的自動編程、智能化的人機界面等；還有智能診斷、智能監(jiān)控方面的內(nèi)容、方便系統(tǒng)的診斷及維修等。為解決傳統(tǒng)的數(shù)控系統(tǒng)封閉性和數(shù)控應(yīng)用軟件的產(chǎn)業(yè)化生產(chǎn)存在的問題。目前許多國家對開放式數(shù)控系統(tǒng)進行研究，如美國的 NGC(The Next Generation Work-Station/Machine Control)、歐共體的 OSACA(Open System Architecture for Control within Automation Systems)、日本的 OSEC(Open System Environment for Controller)，中國的 ONC(Open Numerical Control System)等。數(shù)控系統(tǒng)開放化已經(jīng)成為數(shù)控系統(tǒng)的未來之路。所謂開放式數(shù)控系統(tǒng)就是數(shù)控系統(tǒng)的開發(fā)可以在統(tǒng)一的運行平臺上，面向機床廠家和最終用戶，通過改變、增加或剪裁結(jié)構(gòu)對象（數(shù)控功能） ，形成系列化，并可方便地將用戶的特殊應(yīng)用和技術(shù)訣竅集成到控制系統(tǒng)中，快速實現(xiàn)不同品種、不同檔次的開放式數(shù)控系統(tǒng)，形成具有鮮明個性的名牌產(chǎn)品。目前開放式數(shù)控系統(tǒng)的體系結(jié)構(gòu)規(guī)范、通信規(guī)范、配置規(guī)范、運行平臺、數(shù)控系統(tǒng)功能庫以及數(shù)控系統(tǒng)功能軟件開發(fā)工具等是當前研究的核心。網(wǎng)絡(luò)化數(shù)控裝備是近兩年國際著名機床博覽會的一個新亮點。數(shù)控裝備的網(wǎng)絡(luò)化將極大地滿足生產(chǎn)線、制造系統(tǒng)、制造企業(yè)對信息集成的需求，也是實現(xiàn)新的制造模式如敏捷制造、虛擬企業(yè)、全球制造的基礎(chǔ)單元。國內(nèi)外一些著名數(shù)控機床和數(shù)控系統(tǒng)制造公司都在近兩年推出了相關(guān)的新概念和樣機，如在EMO2001 展中，日本山崎馬扎克（Mazak)公司展出的“CyberProduction Center”（智能生產(chǎn)控制中心，簡稱 CPC)；日本大隈（Okuma）機床公司展出“IT plaza”（信息技術(shù)廣場，簡稱 IT 廣場)；德國西門子(Siemens)公司展出的 Open Manufacturing Environment（開放制造環(huán)境，簡稱 OME）等，反映了數(shù)控機床加工向網(wǎng)絡(luò)化方向發(fā)展的趨勢。1.4 重視新技術(shù)標準、規(guī)范的建立1.4.1 關(guān)于數(shù)控系統(tǒng)設(shè)計開發(fā)規(guī)范如前所述，開放式數(shù)控系統(tǒng)有更好的通用性、柔性、適應(yīng)性、擴展性，美國、歐共體和日本等國紛紛實施戰(zhàn)略發(fā)展計劃，并進行開放式體系結(jié)構(gòu)數(shù)控系統(tǒng)規(guī)范(OMAC、OSACA、OSEC)的研究和制定，世界 3 個最大的經(jīng)濟體在短期內(nèi)進行了幾乎相同的科學(xué)計劃和規(guī)范的制定，預(yù)示了數(shù)控技術(shù)的一個新的變革時期的來臨。我國在 2000 年也開始進行中國的 ONC 數(shù)控系統(tǒng)的規(guī)范框架的研究和制定。1.4.2 關(guān)于數(shù)控標準數(shù)控標準是制造業(yè)信息化發(fā)展的一種趨勢。數(shù)控技術(shù)誕生后的 50 年間的信息交換都是基于 ISO6983 標準，即采用 G，M 代碼描述如何（how）加工，其本天津科技大學(xué)外文資料翻譯4質(zhì)特征是面向加工過程，顯然，他已越來越不能滿足現(xiàn)代數(shù)控技術(shù)高速發(fā)展的需要。為此，國際上正在研究和制定一種新的 CNC 系統(tǒng)標準ISO14649（STEP－NC)，其目的是提供一種不依賴于具體系統(tǒng)的中性機制，能夠描述產(chǎn)品整個生命周期內(nèi)的統(tǒng)一數(shù)據(jù)模型，從而實現(xiàn)整個制造過程，乃至各個工業(yè)領(lǐng)域產(chǎn)品信息的標準化。STEP-NC 的出現(xiàn)可能是數(shù)控技術(shù)領(lǐng)域的一次革命，對于數(shù)控技術(shù)的發(fā)展乃至整個制造業(yè)，將產(chǎn)生深遠的影響。首先，STEP-NC 提出一種嶄新的制造理念，傳統(tǒng)的制造理念中，NC 加工程序都集中在單個計算機上。而在新標準下，NC 程序可以分散在互聯(lián)網(wǎng)上，這正是數(shù)控技術(shù)開放式、網(wǎng)絡(luò)化發(fā)展的方向。其次，STEP-NC 數(shù)控系統(tǒng)還可大大減少加工圖紙（約 75％） 、加工程序編制時間（約35％）和加工時間（約 50％） 。目前，歐美國家非常重視 STEP-NC 的研究，歐洲發(fā)起了 STEP-NC 的 IMS 計劃(1999.1.1～2001.12.31)。參加這項計劃的有來自歐洲和日本的 20 個CAD/CAM/CAPP/CNC 用戶、廠商和學(xué)術(shù)機構(gòu)。美國的 STEP Tools 公司是全球范圍內(nèi)制造業(yè)數(shù)據(jù)交換軟件的開發(fā)者，他已經(jīng)開發(fā)了用作數(shù)控機床加工信息交換的超級模型(Super Model)，其目標是用統(tǒng)一的規(guī)范描述所有加工過程。目前這種新的數(shù)據(jù)交換格式已經(jīng)在配備了 SIEMENS、FIDIA 以及歐洲 OSACA-NC 數(shù)控系統(tǒng)的原型樣機上進行了驗證。2 對我國數(shù)控技術(shù)及其產(chǎn)業(yè)發(fā)展的基本估計我國數(shù)控技術(shù)起步于 1958 年，近 50 年的發(fā)展歷程大致可分為 3 個階段：第一階段從 1958 年到 1979 年，即封閉式發(fā)展階段。在此階段，由于國外的技術(shù)封鎖和我國的基礎(chǔ)條件的限制，數(shù)控技術(shù)的發(fā)展較為緩慢。第二階段是在國家的“六五” 、 “七五”期間以及“八五”的前期，即引進技術(shù)，消化吸收，初步建立起國產(chǎn)化體系階段。在此階段，由于改革開放和國家的重視，以及研究開發(fā)環(huán)境和國際環(huán)境的改善，我國數(shù)控技術(shù)的研究、開發(fā)以及在產(chǎn)品的國產(chǎn)化方面都取得了長足的進步。第三階段是在國家的“八五”的后期和“九五”期間，即實施產(chǎn)業(yè)化的研究，進入市場競爭階段。在此階段，我國國產(chǎn)數(shù)控裝備的產(chǎn)業(yè)化取得了實質(zhì)性進步。在“九五”末期，國產(chǎn)數(shù)控機床的國內(nèi)市場占有率達 50％，配國產(chǎn)數(shù)控系統(tǒng)（普及型）也達到了 10％?？v觀我國數(shù)控技術(shù)近 50 年的發(fā)展歷程，特別是經(jīng)過 4 個 5 年計劃的攻關(guān)，總體來看取得了以下成績。a.奠定了數(shù)控技術(shù)發(fā)展的基礎(chǔ)，基本掌握了現(xiàn)代數(shù)控技術(shù)。我國現(xiàn)在已基本掌握了從數(shù)控系統(tǒng)、伺服驅(qū)動、數(shù)控主機、專機及其配套件的基礎(chǔ)技術(shù)，其中大部分技術(shù)已具備進行商品化開發(fā)的基礎(chǔ)，部分技術(shù)已商品化、產(chǎn)業(yè)化。b.初步形成了數(shù)控產(chǎn)業(yè)基地。在攻關(guān)成果和部分技術(shù)商品化的基礎(chǔ)上，建天津科技大學(xué)外文資料翻譯5立了諸如華中數(shù)控、航天數(shù)控等具有批量生產(chǎn)能力的數(shù)控系統(tǒng)生產(chǎn)廠。蘭州電機廠、華中數(shù)控等一批伺服系統(tǒng)和伺服電機生產(chǎn)廠以及北京第一機床廠、濟南第一機床廠等若干數(shù)控主機生產(chǎn)廠。這些生產(chǎn)廠基本形成了我國的數(shù)控產(chǎn)業(yè)基地。c.建立了一支數(shù)控研究、開發(fā)、管理人才的基本隊伍。雖然在數(shù)控技術(shù)的研究開發(fā)以及產(chǎn)業(yè)化方面取得了長足的進步，但我們也要清醒地認識到，我國高端數(shù)控技術(shù)的研究開發(fā)，尤其是在產(chǎn)業(yè)化方面的技術(shù)水平現(xiàn)狀與我國的現(xiàn)實需求還有較大的差距。雖然從縱向看我國的發(fā)展速度很快，但橫向比（與國外對比）不僅技術(shù)水平有差距，在某些方面發(fā)展速度也有差距，即一些高精尖的數(shù)控裝備的技術(shù)水平差距有擴大趨勢。從國際上來看，對我國數(shù)控技術(shù)水平和產(chǎn)業(yè)化水平估計大致如下。a.技術(shù)水平上，與國外先進水平大約落后 10～15 年，在高精尖技術(shù)方面則更大。b.產(chǎn)業(yè)化水平上，市場占有率低，品種覆蓋率小，還沒有形成規(guī)模生產(chǎn)；功能部件專業(yè)化生產(chǎn)水平及成套能力較低；外觀質(zhì)量相對差；可靠性不高，商品化程度不足；國產(chǎn)數(shù)控系統(tǒng)尚未建立自己的品牌效應(yīng)，用戶信心不足。c.可持續(xù)發(fā)展的能力上，對競爭前數(shù)控技術(shù)的研究開發(fā)、工程化能力較弱；數(shù)控技術(shù)應(yīng)用領(lǐng)域拓展力度不強；相關(guān)標準規(guī)范的研究、制定滯后。分析存在上述差距的主要原因有以下幾個方面。a.認識方面。對國產(chǎn)數(shù)控產(chǎn)業(yè)進程艱巨性、復(fù)雜性和長期性的特點認識不足；對市場的不規(guī)范、國外的封鎖加扼殺、體制等困難估計不足；對我國數(shù)控技術(shù)應(yīng)用水平及能力分析不夠。b.體系方面。從技術(shù)的角度關(guān)注數(shù)控產(chǎn)業(yè)化問題的時候多，從系統(tǒng)的、產(chǎn)業(yè)鏈的角度綜合考慮數(shù)控產(chǎn)業(yè)化問題的時候少；沒有建立完整的高質(zhì)量的配套體系、完善的培訓(xùn)、服務(wù)網(wǎng)絡(luò)等支撐體系。c.機制方面。不良機制造成人才流失，又制約了技術(shù)及技術(shù)路線創(chuàng)新、產(chǎn)品創(chuàng)新，且制約了規(guī)劃的有效實施，往往規(guī)劃理想，實施困難。d.技術(shù)方面。企業(yè)在技術(shù)方面自主創(chuàng)新能力不強，核心技術(shù)的工程化能力不強。機床標準落后，水平較低，數(shù)控系統(tǒng)新標準研究不夠。3 對我國數(shù)控技術(shù)和產(chǎn)業(yè)化發(fā)展的戰(zhàn)略思考3.1 戰(zhàn)略考慮我國是制造大國，在世界產(chǎn)業(yè)轉(zhuǎn)移中要盡量接受前端而不是后端的轉(zhuǎn)移，即要掌握先進制造核心技術(shù)，否則在新一輪國際產(chǎn)業(yè)結(jié)構(gòu)調(diào)整中，我國制造業(yè)將進一步“空芯” 。我們以資源、環(huán)境、市場為代價，交換得到的可能僅僅是世界新經(jīng)濟格局中的國際“加工中心”和“組裝中心” ，而非掌握核心技術(shù)的制造天津科技大學(xué)外文資料翻譯6中心的地位，這樣將會嚴重影響我國現(xiàn)代制造業(yè)的發(fā)展進程。我們應(yīng)站在國家安全戰(zhàn)略的高度來重視數(shù)控技術(shù)和產(chǎn)業(yè)問題，首先從社會安全看，因為制造業(yè)是我國就業(yè)人口最多的行業(yè)，制造業(yè)發(fā)展不僅可提高人民的生活水平，而且還可緩解我國就業(yè)的壓力，保障社會的穩(wěn)定；其次從國防安全看，西方發(fā)達國家把高精尖數(shù)控產(chǎn)品都列為國家的戰(zhàn)略物質(zhì)，對我國實現(xiàn)禁運和限制， “東芝事件”和“考克斯報告”就是最好的例證。3.2 發(fā)展策略從我國基本國情的角度出發(fā)，以國家的戰(zhàn)略需求和國民經(jīng)濟的市場需求為導(dǎo)向，以提高我國制造裝備業(yè)綜合競爭能力和產(chǎn)業(yè)化水平為目標，用系統(tǒng)的方法，選擇能夠主導(dǎo) 21 世紀初期我國制造裝備業(yè)發(fā)展升級的關(guān)鍵技術(shù)以及支持產(chǎn)業(yè)化發(fā)展的支撐技術(shù)、配套技術(shù)作為研究開發(fā)的內(nèi)容，實現(xiàn)制造裝備業(yè)的跨躍式發(fā)展。強調(diào)市場需求為導(dǎo)向，即以數(shù)控終端產(chǎn)品為主，以整機（如量大面廣的數(shù)控車床、銑床、高速高精高性能數(shù)控機床、典型數(shù)字化機械、重點行業(yè)關(guān)鍵設(shè)備等）帶動數(shù)控產(chǎn)業(yè)的發(fā)展。重點解決數(shù)控系統(tǒng)和相關(guān)功能部件（數(shù)字化伺服系統(tǒng)與電機、高速電主軸系統(tǒng)和新型裝備的附件等）的可靠性和生產(chǎn)規(guī)模問題。沒有規(guī)模就不會有高可靠性的產(chǎn)品；沒有規(guī)模就不會有價格低廉而富有競爭力的產(chǎn)品；當然，沒有規(guī)模中國的數(shù)控裝備最終難以有出頭之日。在高精尖裝備研發(fā)方面，要強調(diào)產(chǎn)、學(xué)、研以及最終用戶的緊密結(jié)合，以“做得出、用得上、賣得掉”為目標，按國家意志實施攻關(guān)，以解決國家之急需。在競爭前數(shù)控技術(shù)方面，強調(diào)創(chuàng)新，強調(diào)研究開發(fā)具有自主知識產(chǎn)權(quán)的技術(shù)和產(chǎn)品，為我國數(shù)控產(chǎn)業(yè)、裝備制造業(yè)乃至整個制造業(yè)的可持續(xù)發(fā)展奠定基礎(chǔ)。參考文獻：［1］中國機床工具工業(yè)協(xié)會 行業(yè)發(fā)展部.CIMT2001 巡禮［J］.世界制造技術(shù)與裝備市場，2001(3)：18-20.［2］梁訓(xùn)王宣 ,周延佑.機床技術(shù)發(fā)展的新動向［J］.世界制造技術(shù)與裝備市場，2001(3)：21-28.［3］中國機床工具工業(yè)協(xié)會 數(shù)控系統(tǒng)分會.CIMT2001 巡禮［J］.世界制造技術(shù)與裝備市天津科技大學(xué)外文資料翻譯7場，2001(5)：13-17.［4］楊學(xué)桐，李冬茹，何文立，等?距世紀數(shù)控機床技術(shù)發(fā)展戰(zhàn)略研究［M］.北京：國家機械工業(yè)局，2000.天津科技大學(xué)外文資料翻譯1Numerical control technology and equiping development trend and countermeasureEquip the engineering level , level of determining the whole national economy of the modernized degree and modernized degree of industry, numerical control technology is it develop new developing new high-tech industry and most advanced industry to equip (such as information technology and his industry, biotechnology and his industry, aviation , spaceflight,etc. national defense industry industry) last technology and getting more basic most equipment. Marx has ever said " the differences of different economic times, do not lie in what is produced , and lie in how to produce, produce with some means of labor ". Manufacturing technology and equiping the most basic means of production that are that the mankind produced the activity, and numerical control technology is nowadays advanced manufacturing technology and equips the most central technology. Nowadays the manufacturing industry all around the world adopts numerical control technology extensively, in order to improve manufacturing capacity and level, improve the adaptive capacity and competitive power to the changeable market of the trends . In addition every industrially developed country in the world also classifies the technology and numerical control equipment of numerical control as the strategic materials of the country, not merely take the great measure to develop one's own numerical control technology and industry, and implement blockading and restrictive policy to our country in view of " high-grade , precision and advanced key technology of numerical control " and equiping. In a word, develop the advanced manufacturing technology taking numerical control technology as the core and already become every world developed country and accelerate economic development in a more cost-effective manner, important way to improve the overall national strength and national position. Numerical control technology is the technology controlled to mechanical movement and working course with digital information, integrated products of electromechanics that the numerical control equipment is the new technology represented by numerical control technology forms to the manufacture industry of the tradition and infiltration of the new developing manufacturing industry, namely the so-called digitization is equipped, its technological range covers a lot of fields: (1)Mechanical manufacturing technology; (2)Information processing , processing , transmission technology; (3)Automatic control technology; (4)Servo drive technology; (5)Technology of the sensor ; (6)Software engineering ,etc.. Development trend of a numerical control technology The application of numerical control technology has not only brought the revolutionary change to manufacturing industry of the tradition, make the manufacturing industry become the industrialized symbol , and with the constant development of numerical control technology and enlargement of the application, the 天津科技大學(xué)外文資料翻譯2development of some important trades (IT , automobile , light industry , medical treatment ,etc. ) to the national economy and the people's livelihood of his plays a more and more important role, because the digitization that these trades needed to equip has already been the main trend of modern development. Numerical control technology in the world at present and equiping the development trend to see, there is the following several respect [1- ] in its main research focus . 1.A high-speed , high finish machining technology and new trend equipped The efficiency , quality are subjavanufacturing technology. High-speed , high finish machining technology can raise the efficiency greatly , improve the quality and grade of the products, shorten production cycle and improve the market competitive power. Japan carries the technological research association first to classify it as one of the 5 great modern manufacturing technologies for this, learn (CIRP ) to confirm it as the centre in the 21st century and study one of the directions in international production engineering. In the field of car industry, produce one second when beat such as production of 300,000 / vehicle per year, and many variety process it is car that equip key problem that must be solved one of; In the fields of aviation and aerospace industry, spare parts of its processing are mostly the thin wall and thin muscle, rigidity is very bad, the material is aluminium or aluminium alloy, only in a situation that cut the speed and cut strength very small high, could process these muscles , walls . Adopt large-scale whole aluminium alloy method that blank " pay empty " make the wing recently, such large-scale parts as the fuselage ,etc. come to substitute a lot of parts to assemble through numerous rivet , screw and other connection way, make the intensity , rigidity and dependability of the component improved. All these, to processing and equiping the demand which has proposed high-speed , high precise and high flexibility. According to EMO2001 exhibition situation, high-speed machining center is it give speed can reach 80m/min is even high , air transport competent speed can up to 100m/min to be about to enter. A lot of automobile factories in the world at present, including Shanghai General Motors Corporation of our country, have already adopted and substituted and made the lathe up with the production line part that the high-speed machining center makes up . HyperMach lathe of U.S.A. CINCINNATI Company enters to nearly biggest 60m/min of speed, it is 100m/min to be fast, the acceleration reaches 2g, the rotational speed of the main shaft has already reached 60 000r/min. Processing a thin wall of plane parts, spend 30min only, and same part general at a high speed milling machine process and take 3h, the ordinary milling machine is being processed to need 8h; The speed and acceleration of main shaft of dual main shaft lathes of Germany DMG Company are up to 12* separately! 000r/mm and 1g. In machining accuracy, the past 10 years, ordinary progression accuse of machining accuracy of lathe bring 5|ìm up to from 10|ìm already, accurate grades of machining center from 3- 5|ìm, rise to 1- 1.5|ìm, and ultraprecision machining accuracy is it enter nanometer grade to begin already (0.01|ìm). In dependability, MTBF value of the foreign numerical control device has already reached above 6 000h, MTBF value of the servo system reaches above 30000h, 天津科技大學(xué)外文資料翻譯3demonstrate very high dependability . In order to realize high-speed , high finish machining, if the part of function related to it is electric main shaft , straight line electrical machinery get fast development, the application is expanded further. 1.2 Link and process and compound to process the fast development of the lathe in 5 axes Adopt 5 axles to link the processing of the three-dimensional curved surface part, can cut with the best geometry form of the cutter , not only highly polished, but also efficiency improves by a large margin . It is generally acknowledged , the efficiency of an 5 axle gear beds can equal 2 3 axle gear beds , is it wait for to use the cubic nitrogen boron the milling cutter of ultra hard material is milled and pared at a high speed while quenching the hard steel part, 5 axles link and process 3 constant axles to link and process and give play to higher benefit. Because such reasons as complicated that 5 axles link the numerical control system , host computer structure that but go over, it is several times higher that its price links the numerical control lathe than 3 axles , in addition the technological degree of difficulty of programming is relatively great, have restricted the development of 5 axle gear beds. At present because of electric appearance of main shaft, is it realize 5 axle complex main shaft hair structure processed to link greatly simplify to make, it makes degree of difficulty and reducing by a large margin of the cost, the price disparity of the numerical control system shrinks . So promoted 5 axle gear beds of head of complex main shaft and compound to process the development of the lathe (process the lathe including 5 ). At EMO2001 exhibition, new Japanese 5 of worker machine process lathe adopt complex main shaft hair, can realize the processing of 4 vertical planes and processing of the wanton angle , make 5 times process and 5 axles are processed and can be realized on the same lathe, can also realize the inclined plane and pour the processing of the hole of awls . Germany DMG Company exhibits the DMUVoution series machining center, but put and insert and put processing and 5 axles 5 times to link and process in once, can be controlled by CNC system or CAD/CAM is controlled directly or indirectly. 1.3 Become the main trend of systematic development of contemporary numerical control intelligently , openly , networkedlily The numerical control equipment in the 21st century will be sure the intelligent system, the intelligent content includes all respects in the numerical control system: It is intelligent in order to pursue the efficiency of processing and process quality, control such as the self-adaptation of the processing course, the craft parameter is produced automatically; Join the convenient one in order to improve the performance of urging and use intelligently, if feedforward control , adaptive operation , electrical machinery of parameter , discern load select models , since exactly makes etc. automatically automatically; The ones that simplified programming , simplified operating aspect are intelligent, for instance intelligent automatic programming , 天津科技大學(xué)外文資料翻譯4intelligent man-machine interface ,etc.; There are content of intelligence diagnose , intelligent monitoring , diagnosis convenient to be systematic and maintaining ,etc.. Produce the existing problem for the industrialization of solving the traditional numerical control system sealing and numerical control application software. A lot of countries carry on research to the open numerical control system at present, such as NGC of U.S.A. (The Next Generation Work-Station/Machine Control), OSACA of European Community (Open System Architecture for Control within Automation Systems), OSEC (Open System Environment for Controller ) of Japan, ONC (Open Numerical Control System ) of China ,etc.. The numerical control system melts to become the future way of the numerical control system open. The so-called open numerical control system is the development of the numerical control system can be on unified operation platform, face the lathe producer and end user, through changing, increasing or cutting out the structure target(numerical control function), form the seriation, and can use users specially conveniently and the technical know-how is integrated in the control system, realize the open numerical control system of different variety , different grade fast, form leading brand products with distinct distinction. System structure norm of the open numerical control system at present, communication norm , disposing norm , operation platform , numerical control systematic function storehouse and numerical control systematic function software developing 包含 ument ,etc. are the core of present research. The networked numerical control equipment is a new light spot of the fair of the internationally famous lathe in the past two years. Meeting production line , manufacture system , demand for the information integration of manufacturing company networkedly greatly of numerical control equipment, realize new manufacture mode such as quick make , fictitious enterprise , basic Entrance that the whole world make too. Some domestic and international famous numerical control lathes and systematic manufacturing companies of numerical control have all introduced relevant new concepts and protos of a machine in the past two years, if in EMO2001 exhibition, " CyberProduction Center " that the company exhibits of mountain rugged campstool gram in Japan (Mazak ) (intellectual central production control unit, abbreviated as CPC); The lathe company of Japanese big Wei (Okuma ) exhibits " IT plaza " (the information technology square , is abbreviated as IT square ); Open Manufacturing Environment that the company exhibits of German Siemens (Siemens ) (open the manufacturing environment, abbreviated as OME),etc., have reflected numerical control machine tooling to the development trend of networked direction. 1.4 Pay attention to the new technical standard , normal setting-up 1.4.1 Design the norm of developing about the numerical control system As noted previously, there are better commonability , flexibility , adaptability , expanding in the open numerical control system, such countries as U.S.A. , European Community and Japan ,etc. implement the strategic development plan one after another , carry on the research and formulation of the systematic norm (OMAC , 天津科技大學(xué)外文資料翻譯5OSACA , OSEC ) of numerical control of the open system structure, 3 biggest economies in the world have carried on the formulation that nearly the same science planned and standardized in a short time, have indicated a new arrival of period of change of numerical control technology. Our country started the research and formulation of standardizing the frame of ONC numerical control system of China too in 2000. 1.4.2 About the numerical control standard The numerical control standard is a kind of trend of information-based development of manufacturing industry. Information exchange among 50 years after numerical control technology was born was all because of ISO6983 standard, namely adopt G, M code describes how processes, its essential characteristic faces the processing course, obviously, he can't meet high-speed development of modern numerical control technology's needs more and more already. For this reason, studying and making a kind of new CNC system standard ISO14649 (STEP-NC) in the world, its purpose is to offer a kind of neutral mechanism not depending on the concrete system , can describe the unified data model in cycle of whole life of the products , thus realize the whole manufacture process, standardization of and even each industrial field product information. The appearance of STEP-NC may be a revolution of the technological field of the numerical control, on the development and even the whole manufacturing industry of numerical control technology , will exert a far-reaching influence. First of all, STEP-NC puts forward a kind of brand-new manufacture idea , in the traditional manufacture idea, NC processes the procedures to all concentrate on individual computer. Under the new standard, NC procedure can be dispersed on Internet, this is exactly a direction of open , networked development of numerical control technology. Secondly, STEP-NC numerical control system can also reduce and process the drawing (about 75% ) , process the procedure to work out the time (about 35% ) and process the time (about 50% ) greatly . At present, American-European countries pay much attention to the research of STEP-NC, Europe initiates IMS plan (1999.1.1- 2001.12.3 ) of STEP-NC. 20 CAD/CAM/CAPP/CNC users , manufacturers and academic organizations from Europe and Japan participated in this plan. STEP Tools Company of U.S.A. is a developer of the data interchange software of manufacturing industry in the global range, he has already developed the super model (Super Model ) which accuses of information exchange of machine tooling by counting, its goal is to describe all processing courses with the unified norm. Such new data interchange form has already been verified in allocating the SIEMENS , FIDIA and European OSACA-NC numerical control at present. 2 pairs of basic estimations of technology and industry development of numerical control of our country The technology of numerical control of our country started in 1958, the development 天津科技大學(xué)外文資料翻譯6course in the past 50 years can roughly be divided into 3 stages: The first stage is from 1958 to 1979, namely closed developing stage. In this stages, because technology of foreign countries blockade and basic restriction of terms of our country, the development of numerical control technology is comparatively slow. During " Sixth Five-Year Plan Period " , " the Seventh Five-Year Plan Period " of the country in second stage and earlier stage in " the Eighth Five-Year Plan Period ", namely introduce technology, digest and assimilate, the stage of establishing the system of production domesticization arisesing tentatively. At this stage , because of reform and opening-up and national attention , and study the improvement of the development environment and international environment, research , development and all making considerable progress in production domesticization of the products of the technology of numerical control of our country. The third stage is and during the " Ninth Five-Year Plan Period " on the later stage in " the Eighth Five-Year Plan Period " of the country, namely implement the research of industrialization, enter market competition stage. At this stage , made substantive progress in industrialization of the domestic numerical control equipment of our country. In latter stage for " the Ninth Five-Year Plan ", the domestic occupation rate of market of the domestic numerical control lathe is up to 50%, it is up to 10% too to mix the domestic numerical control system (popular ). Make a general survey of the development course in the past 50 years of technology of numerical control of our country, especially through tackling key problems of 4 Five-Year Plans, all in all has made following achievements. a.Have establish the foundation of the technical development of numerical control, has mastered modern numerical control technology basically. Our country has already, the numerical control host computer , basic technology of special plane and fittings grasped and driven from the numerical control system and servoly basically now, among them most technology have already possessed and commercialized the foundation developed , some technology has already, industrialization commercialized. b.Have formed the industrial base of numerical control tentatively. In tackling key problems the foundation that the achievement and some technology commercialize , set up the systematic factories of numerical control with production capacity in batches such as numerical control in Central China , numerical control of the spaceflight etc.. Electrical machinery plant of Lanzhou, such factory and the first machine tool plant of Beijing , the first machine tool plant of Jinan ,etc. several numerical control host computer factories of a batch of servo systems and servo electrical machineries as the numerical control in Central China,etc.. These factories have formed the numerical control industrial base of our country basically. c.Have set up a numerical control research, development , managerial talent's basic team . Though has made considerable progress in research and development and industrialization of numerical control technology, but we will realize soberly, the research and development of the technology of advanced numerical control of our country, especially there is greater disparity in current situation and current demand of 天津科技大學(xué)外文資料翻譯7our country of engineering level in industrialization. Though very fast from watching the development of our country vertically, have disparity horizontally more than (compare foreign countries with ) not merely engineering level, there is disparity too in development speed in some aspects, namely the engineering level disparity between some high-grade , precision and advanced numerical control equipment has the tendency to expand . Watch from world , estimate roughly as follows about the engineering level of numerical control of our country and industrialization level.