數(shù)控技術(shù)發(fā)展趨勢(shì)及對(duì)策 機(jī)械系畢業(yè)論文 外文翻譯

1、 密 級(jí)分類號(hào)編 號(hào)成 績(jī)本科生畢業(yè)設(shè)計(jì) (論文)外 文 翻 譯原 文 標(biāo) 題numerical control technology of development and countermeasure譯 文 標(biāo) 題數(shù)控技術(shù)發(fā)展趨勢(shì)及對(duì)策作者所在系別機(jī)械工程系作者所在專業(yè)機(jī)械設(shè)計(jì)制造及其自動(dòng)化作者所在班級(jí)b08113班作 者 姓 名 作 者 學(xué) 號(hào) 指導(dǎo)教師姓名 指導(dǎo)教師職稱教授完 成 時(shí) 間2012年2月北華航天工業(yè)學(xué)院教務(wù)處制譯文標(biāo)題數(shù)控技術(shù)發(fā)展趨勢(shì)及對(duì)策原文標(biāo)題numerical control technology of development and countermeasure作

2、者steptools company譯 名steptools公司國(guó) 籍美國(guó)原文出處the world technique of manufacture with equips of development division.數(shù)控技術(shù)發(fā)展趨勢(shì)及對(duì)策1數(shù)控技術(shù)的發(fā)展趨勢(shì)數(shù)控技術(shù)的應(yīng)用不但給傳統(tǒng)制造業(yè)帶來(lái)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(kuò)大，他對(duì)國(guó)計(jì)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(lái)越重要的作用，因?yàn)檫@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(shì)。從目前世界上數(shù)控技術(shù)及其裝備發(fā)展的趨勢(shì)來(lái)看，其主要研究熱點(diǎn)有以下幾個(gè)方面14。11

3、高速、高精加工技術(shù)及裝備的新趨勢(shì)效率、質(zhì)量是先進(jìn)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(chǎng)競(jìng)爭(zhēng)能力。為此日本先端技術(shù)研究會(huì)將其列為5大現(xiàn)代制造技術(shù)之一，國(guó)際生產(chǎn)工程學(xué)會(huì)（cirp）將其確定為21世紀(jì)的中心研究方向之一。在轎車工業(yè)領(lǐng)域，年產(chǎn)30萬(wàn)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(diǎn)問(wèn)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(duì)這些筋、壁進(jìn)行加工。近來(lái)采用大型整體鋁合金坯料“掏空”的方法來(lái)制造機(jī)翼、機(jī)身等大型零件來(lái)替代多個(gè)零件通過(guò)

4、眾多的鉚釘、螺釘和其他聯(lián)結(jié)方式拼裝，使構(gòu)件的強(qiáng)度、剛度和可靠性得到提高。這些都對(duì)加工裝備提出了高速、高精和高柔性的要求。從emo2001展會(huì)情況來(lái)看，高速加工中心進(jìn)給速度可達(dá)80m/min，甚至更高，空運(yùn)行速度可達(dá)100m/min左右。目前世界上許多汽車廠，包括我國(guó)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(jī)床。美國(guó)cincinnati公司的hypermach機(jī)床進(jìn)給速度最大達(dá)60m/min，快速為100m/min，加速度達(dá)2g，主軸轉(zhuǎn)速已達(dá)60000r/min。加工一薄壁飛機(jī)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(guó)dmg公

5、司的雙主軸車床的主軸速度及加速度分別達(dá)12*!000r/mm和1g。在加工精度方面，近10年來(lái)，普通級(jí)數(shù)控機(jī)床的加工精度已由10m提高到5m，精密級(jí)加工中心則從35m，提高到11.5m，并且超精密加工精度已開始進(jìn)入納米級(jí)(0.01m)。在可靠性方面，國(guó)外數(shù)控裝置的mtbf值已達(dá)6000h以上，伺服系統(tǒng)的mtbf值達(dá)到30000h以上，表現(xiàn)出非常高的可靠性。為了實(shí)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(jī)得到了快速的發(fā)展，應(yīng)用領(lǐng)域進(jìn)一步擴(kuò)大。1.2五軸聯(lián)動(dòng)加工和復(fù)合加工機(jī)床快速發(fā)展采用5軸聯(lián)動(dòng)對(duì)三維曲面零件的加工，可用刀具最佳幾何形狀進(jìn)行切削，不僅光潔度高，而且效率也大幅度提高。一般

6、認(rèn)為，1臺(tái)5軸聯(lián)動(dòng)機(jī)床的效率可以等于2臺(tái)3軸聯(lián)動(dòng)機(jī)床，特別是使用立方氮化硼等超硬材料銑刀進(jìn)行高速銑削淬硬鋼零件時(shí)，5軸聯(lián)動(dòng)加工可比3軸聯(lián)動(dòng)加工發(fā)揮更高的效益。但過(guò)去因5軸聯(lián)動(dòng)數(shù)控系統(tǒng)、主機(jī)結(jié)構(gòu)復(fù)雜等原因，其價(jià)格要比3軸聯(lián)動(dòng)數(shù)控機(jī)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(dòng)機(jī)床的發(fā)展。當(dāng)前由于電主軸的出現(xiàn)，使得實(shí)現(xiàn)5軸聯(lián)動(dòng)加工的復(fù)合主軸頭結(jié)構(gòu)大為簡(jiǎn)化，其制造難度和成本大幅度降低，數(shù)控系統(tǒng)的價(jià)格差距縮小。因此促進(jìn)了復(fù)合主軸頭類型5軸聯(lián)動(dòng)機(jī)床和復(fù)合加工機(jī)床（含5面加工機(jī)床）的發(fā)展。在emo2001展會(huì)上，新日本工機(jī)的5面加工機(jī)床采用復(fù)合主軸頭，可實(shí)現(xiàn)4個(gè)垂直平面的加工和任意角度的加工，使得5面加

7、工和5軸加工可在同一臺(tái)機(jī)床上實(shí)現(xiàn)，還可實(shí)現(xiàn)傾斜面和倒錐孔的加工。德國(guó)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(dòng)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(dāng)代數(shù)控系統(tǒng)發(fā)展的主要趨勢(shì)。21世紀(jì)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(gè)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(guò)程的自適應(yīng)控制，工藝參數(shù)自動(dòng)生成；為提高驅(qū)動(dòng)性能及使用連接方便的智能化，如前饋控制、電機(jī)參數(shù)的自適應(yīng)運(yùn)算、自動(dòng)識(shí)別負(fù)載自動(dòng)選定模型、自整定等；簡(jiǎn)化編程、簡(jiǎn)化操作方面的智能化，如智能化的自動(dòng)編程、智能化的人機(jī)

8、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(wèn)題。目前許多國(guó)家對(duì)開放式數(shù)控系統(tǒng)進(jìn)行研究，如美國(guó)的ngc(未來(lái)的工作站/ 機(jī)器控制)、歐共體的osaca、日本的osec，中國(guó)的onc等。數(shù)控系統(tǒng)開放化已經(jīng)成為數(shù)控系統(tǒng)的未來(lái)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(yùn)行平臺(tái)上，面向機(jī)床廠家和最終用戶，通過(guò)改變、增加或剪裁結(jié)構(gòu)對(duì)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(shí)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(gè)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)

9、范、通信規(guī)范、配置規(guī)范、運(yùn)行平臺(tái)、數(shù)控系統(tǒng)功能庫(kù)以及數(shù)控系統(tǒng)功能軟件開發(fā)工具等是當(dāng)前研究的核心。1.4重視新技術(shù)標(biāo)準(zhǔn)、規(guī)范的建立1.4.1關(guān)于數(shù)控系統(tǒng)設(shè)計(jì)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(kuò)展性，美國(guó)、歐共體和日本等國(guó)紛紛實(shí)施戰(zhàn)略發(fā)展計(jì)劃，并進(jìn)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(gè)最大的經(jīng)濟(jì)體在短期內(nèi)進(jìn)行了幾乎相同的科學(xué)計(jì)劃和規(guī)范的制定，預(yù)示了數(shù)控技術(shù)的一個(gè)新的變革時(shí)期的來(lái)臨。我國(guó)在2000年也開始進(jìn)行中國(guó)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(biāo)準(zhǔn)數(shù)控標(biāo)準(zhǔn)是制造業(yè)信息化發(fā)展的一種趨勢(shì)。數(shù)控技術(shù)誕生后的

10、50年間的信息交換都是基于iso6983標(biāo)準(zhǔn)，即采用g，m代碼描述如何（how）加工，其本質(zhì)特征是面向加工過(guò)程，顯然，他已越來(lái)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(guó)際上正在研究和制定一種新的cnc系統(tǒng)標(biāo)準(zhǔn)iso14649（stepnc)，其目的是提供一種不依賴于具體系統(tǒng)的中性機(jī)制，能夠描述產(chǎn)品整個(gè)生命周期內(nèi)的統(tǒng)一數(shù)據(jù)模型，從而實(shí)現(xiàn)整個(gè)制造過(guò)程，乃至各個(gè)工業(yè)領(lǐng)域產(chǎn)品信息的標(biāo)準(zhǔn)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(duì)于數(shù)控技術(shù)的發(fā)展乃至整個(gè)制造業(yè)，將產(chǎn)生深遠(yuǎn)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(gè)計(jì)算機(jī)上。而在新標(biāo)準(zhǔn)下，

11、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(shí)間（約35）和加工時(shí)間（約50）。目前，歐美國(guó)家非常重視step-nc的研究，歐洲發(fā)起了step-nc的ims計(jì)劃(1999.1.12001.12.31)。參加這項(xiàng)計(jì)劃的有來(lái)自歐洲和日本的20個(gè)cad/cam/capp/cnc用戶、廠商和學(xué)術(shù)機(jī)構(gòu)。美國(guó)的steptools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(jī)床加工信息交換的超級(jí)模型(supermodel)，其目標(biāo)是用統(tǒng)一的規(guī)范描述所有加工過(guò)程。目前這種新的數(shù)據(jù)交換格式已經(jīng)在配

12、備了siemens、fidia以及歐洲osaca-nc數(shù)控系統(tǒng)的原型樣機(jī)上進(jìn)行了驗(yàn)證。2對(duì)我國(guó)數(shù)控技術(shù)及其產(chǎn)業(yè)發(fā)展的基本估計(jì)我國(guó)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(gè)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(guó)外的技術(shù)封鎖和我國(guó)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(guó)家的“六五”、“七五”期間以及“八五”的前期，即引進(jìn)技術(shù)，消化吸收，初步建立起國(guó)產(chǎn)化體系階段。在此階段，由于改革開放和國(guó)家的重視，以及研究開發(fā)環(huán)境和國(guó)際環(huán)境的改善，我國(guó)數(shù)控技術(shù)的研究、開發(fā)以及在產(chǎn)品的國(guó)產(chǎn)化方面都取得了長(zhǎng)足的進(jìn)步。第三階段是在國(guó)家的“八五”的后期和“

13、九五”期間，即實(shí)施產(chǎn)業(yè)化的研究，進(jìn)入市場(chǎng)競(jìng)爭(zhēng)階段。在此階段，我國(guó)國(guó)產(chǎn)數(shù)控裝備的產(chǎn)業(yè)化取得了實(shí)質(zhì)性進(jìn)步。在“九五”末期，國(guó)產(chǎn)數(shù)控機(jī)床的國(guó)內(nèi)市場(chǎng)占有率達(dá)50，配國(guó)產(chǎn)數(shù)控系統(tǒng)（普及型）也達(dá)到了10。縱觀我國(guó)數(shù)控技術(shù)近50年的發(fā)展歷程，特別是經(jīng)過(guò)4個(gè)5年計(jì)劃的攻關(guān)，總體來(lái)看取得了以下成績(jī)。1.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(guó)現(xiàn)在已基本掌握了從數(shù)控系統(tǒng)、伺服驅(qū)動(dòng)、數(shù)控主機(jī)、專機(jī)及其配套件的基礎(chǔ)技術(shù)，其中大部分技術(shù)已具備進(jìn)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。2.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

14、統(tǒng)生產(chǎn)廠。蘭州電機(jī)廠、華中數(shù)控等一批伺服系統(tǒng)和伺服電機(jī)生產(chǎn)廠以及北京第一機(jī)床廠、濟(jì)南第一機(jī)床廠等若干數(shù)控主機(jī)生產(chǎn)廠。這些生產(chǎn)廠基本形成了我國(guó)的數(shù)控產(chǎn)業(yè)基地。3.建立了一支數(shù)控研究、開發(fā)、管理人才的基本隊(duì)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(zhǎng)足的進(jìn)步，但我們也要清醒地認(rèn)識(shí)到，我國(guó)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(guó)的現(xiàn)實(shí)需求還有較大的差距。雖然從縱向看我國(guó)的發(fā)展速度很快，但橫向比（與國(guó)外對(duì)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(kuò)大趨勢(shì)。從國(guó)際上來(lái)看，對(duì)我國(guó)數(shù)控技術(shù)水平和產(chǎn)業(yè)化水平估計(jì)大致如下。 1.技術(shù)水平

15、上，與國(guó)外先進(jìn)水平大約落后1015年，在高精尖技術(shù)方面則更大。 2.產(chǎn)業(yè)化水平上，市場(chǎng)占有率低，品種覆蓋率小，還沒(méi)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(duì)差；可靠性不高，商品化程度不足；國(guó)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。 3.可持續(xù)發(fā)展的能力上，對(duì)競(jìng)爭(zhēng)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(qiáng)；相關(guān)標(biāo)準(zhǔn)規(guī)范的研究、制定滯后。3對(duì)我國(guó)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(guó)是制造大國(guó)，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(jìn)制造核心技術(shù)，否則在新一輪國(guó)際產(chǎn)業(yè)結(jié)構(gòu)調(diào)整中，我國(guó)制造業(yè)將進(jìn)一步“空芯”。我們以

16、資源、環(huán)境、市場(chǎng)為代價(jià)，交換得到的可能僅僅是世界新經(jīng)濟(jì)格局中的國(guó)際“加工中心”和“組裝中心”，而非掌握核心技術(shù)的制造中心的地位，這樣將會(huì)嚴(yán)重影響我國(guó)現(xiàn)代制造業(yè)的發(fā)展進(jìn)程。我們應(yīng)站在國(guó)家安全戰(zhàn)略的高度來(lái)重視數(shù)控技術(shù)和產(chǎn)業(yè)問(wèn)題，首先從社會(huì)安全看，因?yàn)橹圃鞓I(yè)是我國(guó)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(guó)就業(yè)的壓力，保障社會(huì)的穩(wěn)定；其次從國(guó)防安全看，西方發(fā)達(dá)國(guó)家把高精尖數(shù)控產(chǎn)品都列為國(guó)家的戰(zhàn)略物質(zhì)，對(duì)我國(guó)實(shí)現(xiàn)禁運(yùn)和限制，“東芝事件”和“考克斯報(bào)告”就是最好的例證。3.2發(fā)展策略從我國(guó)基本國(guó)情的角度出發(fā)，以國(guó)家的戰(zhàn)略需求和國(guó)民經(jīng)濟(jì)的市場(chǎng)需求為導(dǎo)向，以提高我國(guó)制造裝備業(yè)綜合

17、競(jìng)爭(zhēng)能力和產(chǎn)業(yè)化水平為目標(biāo)，用系統(tǒng)的方法，選擇能夠主導(dǎo)21世紀(jì)初期我國(guó)制造裝備業(yè)發(fā)展升級(jí)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(shí)現(xiàn)制造裝備業(yè)的跨躍式發(fā)展。強(qiáng)調(diào)市場(chǎng)需求為導(dǎo)向，即以數(shù)控終端產(chǎn)品為主，以整機(jī)（如量大面廣的數(shù)控車床、銑床、高速高精高性能數(shù)控機(jī)床、典型數(shù)字化機(jī)械、重點(diǎn)行業(yè)關(guān)鍵設(shè)備等）帶動(dòng)數(shù)控產(chǎn)業(yè)的發(fā)展。重點(diǎn)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(jī)、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(wèn)題。沒(méi)有規(guī)模就不會(huì)有高可靠性的產(chǎn)品；沒(méi)有規(guī)模就不會(huì)有價(jià)格低廉而富有競(jìng)爭(zhēng)力的產(chǎn)品；當(dāng)然，沒(méi)有規(guī)模中國(guó)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，

18、要強(qiáng)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(biāo)，按國(guó)家意志實(shí)施攻關(guān)，以解決國(guó)家之急需。在競(jìng)爭(zhēng)前數(shù)控技術(shù)方面，強(qiáng)調(diào)創(chuàng)新，強(qiáng)調(diào)研究開發(fā)具有自主知識(shí)產(chǎn)權(quán)的技術(shù)和產(chǎn)品，為我國(guó)數(shù)控產(chǎn)業(yè)、裝備制造業(yè)乃至整個(gè)制造業(yè)的可持續(xù)發(fā)展奠定基礎(chǔ)。參考文獻(xiàn)：1中國(guó)機(jī)床工具工業(yè)協(xié)會(huì)行業(yè)發(fā)展部.cimt2001巡禮j.世界制造技術(shù)與裝備市場(chǎng)，2001(3)：18-20.2梁訓(xùn)王宣,周延佑.機(jī)床技術(shù)發(fā)展的新動(dòng)向j.世界制造技術(shù)與裝備市場(chǎng)，2001(3)：21-28.3中國(guó)機(jī)床工具工業(yè)協(xié)會(huì)數(shù)控系統(tǒng)分會(huì).cimt2001巡禮j.世界制造技術(shù)與裝備市場(chǎng)，2001(5)：13-17.4楊學(xué)桐，李冬茹，何文

19、立，等。距世紀(jì)數(shù)控機(jī)床技術(shù)發(fā)展戰(zhàn)略研究m.北京：國(guó)家機(jī)械工業(yè)局，2000numerical control technology of development and countermeasure 1 numerical control technology trend of developmentnot only the numerical control technology application has brought the revolutionary change for the traditional manufacturing industry, causes the manu

20、facturing industry to become the industrialization the symbol, moreover along with numerical control technology unceasing development and application domain expansion, he to national economy and the peoples livelihood some important professions (it, automobile, light industry, medical service and so

21、 on) development more and more vital role, because these professions must equip the digitization already was the modern development major tendency. the numerical control technology and the equipment development tendency looked from the present world that, its main research hot spot has following sev

22、eral aspect 14.1.1 high speed, high precision work technology and equipment new tendencythe efficiency, the quality are the advanced technique of manufacture main bodies. high speed, the high precision work technology may enhance the efficiency enormously, enhances the product the quality and the sc

23、ale, reduces the production cycle and sharpens the market competition ability. lists as one of 5 great modern techniques of manufacture for this japan tip technology research board it, the international production project learns (cirp) its determination is one of 21st century central research direct

24、ions.in the passenger vehicle industry domain, yearly produces 300,000 production metres was 40/s，moreover the multi-variety processing is one of key questions which the passenger vehicle equipment must solve; in the aviation and the astronavigation industry domain, its processing spare part many fo

25、r the thin wall and the thin muscle, the rigidity is very bad, material for aluminum or aluminum alloy, only then in the high cutting speed and the cutting force very small situation, can to these muscles, the wall carry on the processing. recently uses the large-scale overall aluminum alloy semifin

26、ished materials “pull out spatially” the method to make the wing, the fuselage and so on the large-scale components substitutes many components through the multitudinous rivets, the bolt and other joint way assembling, causes the component the intensity, the rigidity and the reliability obtains the

27、enhancement. these all to processed the equipment to propose high speed, gao jing and the high flexible request.unfolds from emo2001 meets the situation to look that, processes the center feed rate to be possible high speed to reach 80m/min, even higher, the aerial transport stroke speed may reach 1

28、00m/about min. at present in the world many automotive factories, including our countrys shanghai general motors, already used by the high speed processing center composition production line part substitution aggregate machine-tool. american cincinnati corporations hypermach engine bed feed rate rea

29、ches 60m/most greatlymin, fast is 100m/min, the acceleration reaches 2g, the main axle rotational speed has reached 60 000r/min. processes a thin wall airplane part, only uses 30min, but the same components need 3h in the common high speed milling machine processing, needs 8h in the plain milling ma

30、chine processing; the german dmg corporations double main axle lathe main axle speed and the acceleration respectively reach 12*! 000r/mm和1g。in the processing precision aspect, in the recent 10 years, the ordinary level numerical control engine bed processing precision from 10m enhanced 5m, the fine

31、 level of secrecy processing center from 35 m, enhances to 11.5 m, and the ultra precise processing precision started to enter a nanometer level (0.01m).in the reliable aspect, the overseas numerical control installment value has reached above 6 000h, the servosystem value achieved above 30000h, dis

32、plays the extremely high reliability. in order to realize, the high precision work high speed, with it necessary function part like electricity main axle, the straight line electrical machinery obtained the fast development, the application domain further expanded. 1.2 5 axis linkage processing and

33、compound processing engine bed fast development uses 5 axis linkages to the three dimensional curved surface components processing, the available cutting tool best geometry shape carries on the cutting, not only the smooth finish is high, moreover the efficiency also large scale enhances. believed g

34、enerally that, 1 5 axis linkage engine bed efficiency may be equal to 2 3 axis linkage engine bed, specially uses when the cubic boron nitride and so on the ultra hard material milling cutter carries on the high speed milling hardened steel components, 5 axis linkage processing may compared to 3 axi

35、s linkage processing display a higher benefit. because but past 5 axis linkage numerical control system, main engine structure complex and so on reasons, its price must outdo the several fold compared to 3 axis linkage numerical control engine bed, added the programming technology difficulty to be b

36、ig, has restricted 5 axis linkage engine bed development.current as a result of electricity main axle appearance, causes to realize 5 axis linkage processing compound host axle neck structure is greatly the simplification, its manufacture difficulty and the cost reduce large scale, numerical control

37、 system price disparity reduction. therefore promoted the compound host axle neck type 5 axis linkage engine bed and the compound processing engine bed (including 5 processing engine beds) development.unfolds at the meeting in emo2001, the new japanese labor machine 5 processing engine beds use the

38、compound host axle neck, may realize 4 vertical plane processings and the random angle processing, causes 5 processings and 5 axis processings may realize on the identical taiwan engine bed, but also may realize the inclined plane and the back taper hole processing. german dmg corporation displays t

39、he dmuvoution series processing center, may clamp the next 5 processings and 5 axis linkage processing in an attire, may by the cnc systems or cad/cam which are controled deract or inderact.1.3 intellectualizations, open style, the network becomes the contemporary numerical control system developmen

40、t the main tendencythe 21st century numerical control equipments will be has certain intellectualized system, the intellectualized content including in numerical control system each aspect: in order to pursue the processing efficiency and the processing quality aspect intellectualization, like proce

41、ssing process adaptive control, craft parameter automatic production; in order to enhance the actuation performance and the use connection convenient intellectualization, like feed-forward control, electrical machinery parameter auto-adapted operation, automatic diagnosis load automatic designation

42、model, self regulating grade; simplification programming, simplification operation aspect intellectualization, like intellectualized automatic programming, intellectualized man-machine contact surface and so on; also has the intelligence to diagnose, the intelligent monitoring aspect content, the co

43、nvenience system diagnosis and the service and so on.in order to solve the traditional numerical control system closeness and the numerical control application software industrial production production existence question. at present many countries conduct the research to the open style numerical con

44、trol system, like us ngc(the next generation work-station/machine control)、european economic community osaca(open system architecture for control within automation systems)、japanese osec(open system environment for controller)，chinese onc(open numerical control system) and so on。the numerical contro

45、l system will open already becomes the numerical control system road of the future. the so-called open style numerical control system is the numerical control system development may in the unified movement platform, face the engine bed factory and the end-user, through the change, the increase or th

46、e tailor structure object (numerical control function), forms the seriation, and may conveniently integrates users special application and the technical knack in the control system, the fast realization different variety, the different scale open style numerical control system, forms has the bright

47、individuality famous brand goods. at present the open style numerical control system architecture standard, the correspondence standard, the disposition standard, the movement platform, the numerical control system function storehouse as well as the numerical control system function software develop

48、ment kit and so on is the current research core.1.4 takes the new technical standard, the standard establishment1.4.1 about numerical control system design development standardas mentioned above, the open style numerical control system has a better versatility, the flexibility, the compatibility, th

49、e extension, countries and so on us, european economic community and japan implements the strategy development plan in abundance, and carries on the open style architecture numerical control system specification (omac, osaca, osec) the research and the formulation, the world 3 biggest economies have

50、 carried on the nearly same science plan and the standard formulation in the short-term, has indicated a numerical control technology new transformation time oncoming. our country also started in 2000 to conduct chinas onc numerical control system standard frame research and the formulation. 1.4.2 a

51、bout numerical control standard the numerical control standard is the manufacturing industry informationization development one tendency. the numerical control technology is born after 50 year exchanges of information all is based on the iso6983 standard, how namely uses the g, m code to describe th

52、e (how) processing, its substantive characteristics faces the processing process, obviously, he has more and more not been able to satisfy modern numerical control technology high speed the need to develop. therefore, on international is studying and formulates one kind of new cnc system standard is

53、o14649(step-nc), its goal is provides one kind not to rely on the concrete system neutral mechanism, can describe in the product entire life cycle unified data model, thus realizes the entire manufacture process, and even each industry domain product information standardization.the step-nc appearanc

54、e is possibly a numerical control area of technology revolution, regarding the numerical control technology development and even the entire manufacturing industry, will have the profound influence. first, step-nc proposed one kind of brand-new manufacture idea, in the traditional manufacture idea, t

55、he nc processing procedure all concentrates on the single computer. but under the new standard, the nc procedure may disperse on the internet, this is precisely the numerical control technology open style, the network development direction. next, the step-nc numerical control system also may reduce

56、the processing blueprint greatly (approximately 75%), the processing programming time (approximately 35%) and the process period (approximately 50%).at present, the european and american countries extremely took step-nc the research, europe initiate step-nc ims to plan (1999.1.12001.12.31). particip

57、ates in this plan to have comes from european and japans 20 cad/cam/capp/cnc user, manufacturer and academic organization. uss step tools corporation is in the global scope the manufacturing industry data exchange software exploiter, he already developed has served as the numerical control engine be

58、d processing exchange of information the super model (super model), its goal was with the unification standard description all processing process. at present this kind of recent data exchange form already in has provided siemens, fidia as well as on the european osaca-nc numerical control system prototype prototype has carried on the confirmation.2 pair of our country numerical control technology and industrial development basic estimateour cou