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機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 1 數(shù)控技術(shù)的發(fā)展趨勢 摘要 簡要介紹了當(dāng)今世界數(shù)控技術(shù)及裝備發(fā)展的趨勢及我國數(shù)控裝備技術(shù)發(fā)展和產(chǎn) 業(yè)化的現(xiàn)狀 在此基礎(chǔ)上討論了在我國加入 WTO 和對外開放進(jìn)一步深化的新環(huán)境下 發(fā)展我國數(shù)控技術(shù)及裝備 提高我國制造業(yè)信息化水平和國際競爭能力的重要性 并從 戰(zhàn)略和策略兩個層面提出了發(fā)展我國數(shù)控技術(shù)及裝備的幾點(diǎn)看法 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(jì)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(jì)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(dāng)今先進(jìn) 制造技術(shù)和裝備最核心的技術(shù) 當(dāng)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(dá)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(shí)行封鎖和限制 政策 總之 大力發(fā)展以數(shù)控技術(shù)為核心的先進(jìn)制造技術(shù)已成為世界各發(fā)達(dá)國家加速 經(jīng)濟(jì)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(jī)械運(yùn)動和工作過程進(jìn)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(jī)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(jī)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(kuò)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?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 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(diǎn)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(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(jì)的中 心研究方向之一 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 2 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(diǎn)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(jìn)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(jī)翼 機(jī)身等大型零件來替代多個零件通過眾多的鉚釘 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(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 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) 60 000r 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 DMG 公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 普通級數(shù)控機(jī)床的加工精度已由 10 m 提高到 5 m 精密級加工中心則從 3 5 m 提高到 1 1 5 m 并且超精密加工精度已開始 進(jìn)入納米級 0 01 m 在可靠性方面 國外數(shù)控裝置的 MTBF 值已達(dá) 6 000h 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 5 軸聯(lián)動加工和復(fù)合加工機(jī)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(jìn)行切削 不僅光 潔度高 而且效率也大幅度提高 一般認(rèn)為 1 臺 5 軸聯(lián)動機(jī)床的效率可以等于 2 臺 3 軸聯(lián)動機(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 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(jī)結(jié)構(gòu) 復(fù)雜等原因 其價格要比 3 軸聯(lián)動數(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(jìn)了復(fù)合主軸頭類型 5 軸聯(lián)動機(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(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 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 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 3 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 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 如前饋控制 電機(jī)參 數(shù)的自適應(yīng)運(yùn)算 自動識別負(fù)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(jī)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(jìn)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(yùn)行平臺上 面向機(jī)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(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(yùn)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(dāng)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(jī)床博覽會的一個新亮點(diǎn) 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(shí)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(jī)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(jī) 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(jī)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(jī)床加工向網(wǎng)絡(luò)化方向發(fā)展的趨勢 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(jìn)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(jìn)步 第三階段是在 國家的 八五 的后期和 九五 期間 即實(shí)施產(chǎn)業(yè)化的研究 進(jìn)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(shí)質(zhì)性進(jìn)步 在 九五 末期 國產(chǎn)數(shù) 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 4 控機(jī)床的國內(nèi)市場占有率達(dá) 50 配國產(chǎn)數(shù)控系統(tǒng) 普及型 也達(dá)到了 10 縱觀我國數(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(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 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(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(duì)伍 雖然在數(shù)控技術(shù)的研究開發(fā)以及產(chǎn)業(yè)化方面取得了長足的進(jìn)步 但我們也要清醒地認(rèn) 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(shí)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(kuò)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(jìn)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(qiáng) 相關(guān)標(biāo)準(zhǔn)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(rèn)識方面 對國產(chǎn)數(shù)控產(chǎn)業(yè)進(jìn)程艱巨性 復(fù)雜性和長期性的特點(diǎn)認(rèn)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(jī)制方面 不良機(jī)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(shí)施 往往規(guī)劃理想 實(shí)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(qiáng) 核心技術(shù)的工程化能力不強(qiáng) 機(jī)床標(biāo)準(zhǔn)落后 水平較低 數(shù)控系統(tǒng)新標(biāo)準(zhǔn)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(jìn)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(jìn)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(jì)格局中的 國際 加工中心 和 組裝中心 而非掌握核心技術(shù)的制造中心的地位 這樣將會 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 5 嚴(yán)重影響我國現(xiàn)代制造業(yè)的發(fā)展進(jìn)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?yàn)橹圃鞓I(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(dá)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(shí)現(xiàn)禁運(yùn)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(jì)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(biāo) 用系統(tǒng)的方法 選擇能夠 主導(dǎo) 21 世紀(jì)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(shí)現(xiàn)制造裝備業(yè)的跨躍式發(fā)展 強(qiáng)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(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(dāng)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(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) 按國家意志實(shí)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(qiáng)調(diào)創(chuàng)新 強(qiáng)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(xiàn) 1 中國機(jī)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(jī)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(jī)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 場 2001 5 13 17 4 楊學(xué)桐 李冬茹 何文立 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 國家機(jī) 械工業(yè)局 2000 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 6 The development trend of the numerical control technology Summary Have introduced numerical control technology and the development trend of the equipment and the current situations of the technical development of numerical control equipment and industrialization of our country of our times briefly have discussed under the new environment further deepened in our country s accession to the WTO and opening to the outside world on this basis develop technology of numerical control of our country and the importance of the information based level of manufacturing industry of our country and international competitiveness equips improves and has put forward technology of numerical control of our country and some views equipped of developing from two aspects of strategy and tactics The engineering level of equipment industry and modernized intensity are determining the level of the whole national economy and modernized intensity numerical control technology and equip develop new developing new high tech industry and most advanced industry To can make technology and basic equipment most national defense industry industries such as information technology and their industry biotechnology industry aviation spaceflight etc Marx has ever said the differences of different economic times do not lie in what is produced lie in how produce with what means of labor produce Manufacturing technology and equipping the most basic means of production that are that the mankind produced the activity and numerical control technology to equip most central technology Nowadays the manufacturing industry all around the world adopts the technology of numerical control 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 high grade precision and advanced key technology and equipment of numerical control In a word develop taking technology of numerical control as the core advanced manufacturing technology become world all developed country accelerate economic development already in a more cost effective manner important route to improve the comprehensive national strength and national position Numerical control technology to go on technology that control with digital information to mechanical movement and working course numerical control equipment whether represented by technology of numerical control new technology make industry and new developing 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 7 infiltration electromechanics integrated product that form of manufacturing industry to tradition i e what is called digitization equip 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 Transducer technology 6 Software engineering etc 1 Development trend of a numerical control technology The application of the technology of numerical control has not only brought the revolutionary change to traditional manufacturing industry make the manufacturing industry become the industrialized symbol and with the constant development of the technology of numerical control and enlargement of application the development of he some important trades IT car light industry medical treatment etc to the national economy and the people s livelihood plays a more and more important role because these trade necessary digitization that equipped has already been the main trend of modern development According to the technology of numerical control and equipment development trend in the world at present its main research focus has the following several respect 1 4 1 1 A high speed high finish machining technology and new trend equipped Efficiency quality are subjects of the advanced manufacturing technology At a high speed high finish machining technology can raise the efficiency greatly quality and grade to raise product shorten production cycle and improve the competitive power of market Japan carry technological research association classify their as one of the 5 loud modern manufacturing technologies first for this reason learn CIRP to confirm it as the centre in the 21st century to study one of the directions in international production engineering In the field of car industry produce 40 second when beat such as production of 300 000 vehicle per year and many variety process it is car that equip one of the key problems that must be solved In the fields of aviation and aerospace industry its processing s spare parts are mostly the thin wall and thin muscle rigidity very bad material aluminium or aluminium alloy in high to cut pace and cut strength very under the little situation only could process these muscles walls Adopt large scale whole aluminium alloy blank method of pay empty make the wing recently large scale parts such as the fuselage etc come to substitute a lot of parts to assemble through numerous rivet screw and other connection ways make the intensity rigidity and dependability of the component improved All these requirement for processing and equipping and proposing high speed high and precise and high flexibility According to EMO2001 exhibition situation the high speed machining center enters for the pace to can reach 80m min even high air transport competent pace can reach 100m min about A lot of car factories in the world at present including Shanghai General Motors Corporation of our country adopt substitute and make the lathe up with high speed machining center production line part that make up already HyperMach lathe of Company CINCINNATI of U S A enter give pace to be most loud to reach 60m min it is 100m min 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 8 to be fast acceleration reach 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 process and need 8h with ordinary milling machine The paces and acceleration of main shaft of dual main shaft lathes of Germany DMG Company reach 12 separately 000r mm and 1g In machining accuracy in the past 10 years ordinary progression has accused of the machining accuracy of the lathe to already improve from 10 m to 5 m accurate grades of machining center from 3 5 m raise to 1 1 5 m and ultraprecision machining accuracy begin enter getting nanometer already In machining accuracy the past 10 years ordinary progression accuse of machining accuracy of lathe raise to 5 m from 3 5 m accurate grades of machining center from 10 m already improve to 1 1 5 m and the ultraprecision machining accuracy has already begun to enter nanometer 0 01 m ly 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 demonstrate very high dependability For realize at a high speed high finish machining related to it function part if electric main shaft straight line electrical machinery get fast development the application is further expanded 1 2 5 axles link and process and compound and process the lathe to develop fast Adopt 5 axle link to three dimensional curved surface processing of part can cut with the best geometirc form of the cutter not only highly polished but also efficiency is improved by a large margin It is generally acknowledged a 5 axle gear beds of efficiency can equal 2 3 axle gear beds use cubic nitrogen boron wait ultra hard material milling cutter go on at a high speed milling sharpening quenching hard steel at the part 5 axle link process constant 3 axle link process give play to high benefit But go over because 5 axles link the numerical control system complicated reason of host computer structure price its link numerical control to be lathe several times higher than 3 axle in addition programming technological difficulty relatively heavy have restricted 5 axle gear beds of development At present because of electric appearance of main shaft make realize 5 axle compound main shaft hair structure processed to link greatly simplify it make difficulty and cost reduce by a large margin numerical control price disparity of systems shrink So promote compound main shaft head type 5 axle gear bed and compound development to process lathe process the lathe including 5 At EMO2001 exhibition new Japanese 5 of worker machine process lathe adopt compound main shaft hair can realize 4 processing and arbitrary processing of angle of vertical plane make 5 process and 5 axles are processed and can be realized at the same lathe can also realize the inclined plane and pour the processing of the hole of awls Company DMG of Germany exhibit DMUVoution series machining center can put insert down 5 process and 5 axes link and process in one can be controlled by CNC system or CAD CAM controls directly or indirectly 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 9 1 3 intellectualizations open style the network turns into for the contemporary numerical control system development mainly hastens The 21st century numerical control equipments will be has certain intellectualized the 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 processing process adaptive control craft parameter automatic production In order to enhance the actuation performance and the use connection convenient intellectualization like the feed forward control the electrical machinery parameter auto adapted operation the automatic diagnosis load automatic designation model is automatic entire grades 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 convenience system diagnosis and the service and so on In order to solve the traditional numerical control system seal and the numerical control application software industry production existence question At present many countries conduct the research to the open style numerical control system like US S NGC The Next Generation Work Station Machine Control European Economic Community s OSACA Open System Architecture for Control within Automation Systems Japan s OSEC Open System Environment for Controller China s ONC Open Numerical Control System and so on The numerical control 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 the tailor structure object numerical control function forms the seriation and may conveniently integrates user s 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 individuality famous brand goods At present the open style numerical control system system structure 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 development kit and so on is the current research core The network numerical control equipment is a nearly two year international famous engine beds expositions new luminescent spot The numerical control equipment network enormously will satisfy the production line the manufacture system the manufacture enterprise to the information integration demand also will be realizes new manufacture pattern like agile manufacture hypothesized enterprise the global manufacture foundation unit The domestic and foreign some famous numerical controls engine bed and the numerical control system manufacture company has all promoted the related new concept and the prototype in the nearly two years if unfolds in EMO2001 Japanese Shan Qima Mazak the 機(jī)電工程學(xué)院畢業(yè)設(shè)計外文翻譯 10 company displays CyberProduction Center intelligence production control center is called CPC Japan is Okuma the engine bed company to display IT plaza information technology square is called the IT square German Simens Siemens the company displays Open Manufacturing Environment opening manufacture environment is called OME and so on had reflected the numerical control engine bed processing the tendency which develops to the network direction 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 course in the past 50 years can roughly be divided into 3 stages The first stage is from 1958 to 1979 i e closed developing stage In this stages technology of foreign countries blockade and basic restriction of terms of our country the development of the technology of numerical control 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 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 thi