外文翻譯--機(jī)械加工中心

1、<p><b>　　附錄1</b></p><p>　　中文名稱：機(jī)械加工中心 英文名稱：machining center 其他名稱：自動(dòng)換刀數(shù)控機(jī)床 </p><p>　　定義：能自動(dòng)更換工具，對(duì)一次裝夾的工件進(jìn)行多工序加工的數(shù)控機(jī)床。 機(jī)械加工中心,簡稱cnc，是由機(jī)械設(shè)備與數(shù)控系統(tǒng)組成的使用于加工復(fù)雜形狀工件的高效率自動(dòng)化機(jī)床。加工中心又叫電

2、腦鑼。加工中心備有刀庫，具有自動(dòng)換刀功能，是對(duì)工件一次裝夾后進(jìn)行多工序加工的數(shù)控機(jī)床。加工中心是高度機(jī)電一體化的產(chǎn)品，工件裝夾后，數(shù)控系統(tǒng)能控制機(jī)床按不同工序自動(dòng)選擇、更換刀具、自動(dòng)對(duì)刀、自動(dòng)改變主軸轉(zhuǎn)速、進(jìn)給量等，可連續(xù)完成鉆、鏜、銑、鉸、攻絲等多種工序，因而大大減少了工件裝夾時(shí)間、測(cè)量和機(jī)床調(diào)整等輔助工序時(shí)間，對(duì)加工形狀比較復(fù)雜，精度要求較高，品種更換頻繁的零件具有良好的經(jīng)濟(jì)效果。 按控制軸數(shù)可分為： </p>&

3、lt;p>　　（1）三軸加工中心 </p><p>　?。?）四軸加工中心 </p><p>　?。?）五軸加工中心。 </p><p>　　項(xiàng)目二 機(jī)械加工中心設(shè)備技術(shù)分類 加工中心的品種、規(guī)格較多，這里僅從結(jié)構(gòu)上對(duì)其作一分類。 </p><p>　　一、立式加工中心 指主軸軸線為垂直狀態(tài)設(shè)置的加工中心。其結(jié)構(gòu)形式多為固

4、定立柱式，工作臺(tái)為長方形，無分度回轉(zhuǎn)功能，適合加工盤、套、板類零件。一般具有三個(gè)直線運(yùn)動(dòng)坐標(biāo)，并可在工作臺(tái)上安裝一個(gè)水平軸的數(shù)控回轉(zhuǎn)臺(tái)，用以加工螺旋線零件。 立式加工中心裝夾工件方便，便于操作，易于觀察加工情況，但加工時(shí)切屑不易排除，且受立柱高度和換刀裝置的限制，不能加工太高的零件。 立式加工中心的結(jié)構(gòu)簡單，占地面積小，價(jià)格相對(duì)較低，應(yīng)用廣泛。 </p><p>　　二、臥式加工中心 指主軸軸線為水平

5、狀態(tài)設(shè)置的加工中心。通常都帶有可進(jìn)行分度回轉(zhuǎn)運(yùn)動(dòng)的工作臺(tái)。臥式加工中心一般都具有三個(gè)至五個(gè)運(yùn)動(dòng)坐標(biāo)，常見的是三個(gè)直線運(yùn)動(dòng)坐標(biāo)加一個(gè)回轉(zhuǎn)運(yùn)動(dòng)坐標(biāo)，它能夠使工件在一次裝夾后完成除安裝面和頂面以外的其余四個(gè)面的加工，最適合加工箱體類零件。 臥式加工中心調(diào)試程序及試切時(shí)不便觀察，加工時(shí)不便監(jiān)視，零件裝夾和測(cè)量不方便，但加工時(shí)排屑容易，對(duì)加工有利。與立式加工中心相比，臥式加工中心的結(jié)構(gòu)復(fù)雜，占地面積大，價(jià)格也較高。 </p>

6、<p>　　龍門式加工中心 龍門式加工中心的形狀與龍門銑床相似，主軸多為垂直設(shè)置，除自動(dòng)換刀裝置外，還帶有可更換的主軸附件，數(shù)控裝置的功能也較齊全，能夠一機(jī)多用，尤其適用于加工大型或形狀復(fù)雜的零件，如飛機(jī)上的梁、框、壁板等。</p><p>　　我國加工中心的未來發(fā)展趨勢(shì)！</p><p>　　未來發(fā)展的前景確實(shí)喜人，不過吳柏林也表示，由于我國工業(yè)基礎(chǔ)相對(duì)薄弱、以企業(yè)為主體的

7、創(chuàng)新體系尚未建立、數(shù)控車床產(chǎn)業(yè)化時(shí)間短等原因，技術(shù)上和產(chǎn)業(yè)上與西方發(fā)達(dá)國家相比還存在一定差距，當(dāng)前的發(fā)展還需要注意四個(gè)方面的問題。 </p><p>　　2008年12月，《高檔數(shù)控車床與基礎(chǔ)制造裝備科技重大專項(xiàng)》得到國家批準(zhǔn)。專項(xiàng)對(duì)高檔數(shù)控車床等重大裝備、數(shù)控系統(tǒng)、功能部件與關(guān)鍵部件、共性技術(shù)、創(chuàng)新平臺(tái)建設(shè)及應(yīng)用示范工程做出了部署。“今年專項(xiàng)將開始逐步啟動(dòng)實(shí)施，車床工具行業(yè)自主創(chuàng)新能力將進(jìn)一步提高，將為國產(chǎn)高

8、檔數(shù)控車床持續(xù)發(fā)展奠定堅(jiān)實(shí)的技術(shù)基礎(chǔ)?！眳前亓终f。 </p><p>　　三年前接受中國工業(yè)報(bào)記者采訪時(shí)，吳柏林提出需要重視功能部件的發(fā)展，此時(shí)又被他再一次重點(diǎn)提出。功能部件發(fā)展滯后的狀況似乎并沒有太多的改觀。“數(shù)控車床的發(fā)展需要高水平、專業(yè)化、規(guī)?；a(chǎn)的功能部件作基礎(chǔ)，目前我國差距很大。”據(jù)了解，大多數(shù)中高檔數(shù)控車床主要配套的還是發(fā)那科和西門子等國外數(shù)控系統(tǒng)，刀庫機(jī)械手、數(shù)控刀架、滾珠絲杠和導(dǎo)軌、電主軸等主要

9、還是日本、德國或中國臺(tái)灣地區(qū)的產(chǎn)品，用戶選購國產(chǎn)車床時(shí)普遍提出選用境外功能部件的要求。功能部件發(fā)展的滯后性，將制約國產(chǎn)中高檔數(shù)控車床的發(fā)展。 </p><p>　　吳柏林還認(rèn)為，當(dāng)前外商獨(dú)資趨勢(shì)應(yīng)引起重視。近幾年來，車床行業(yè)有些合資企業(yè)逐步擴(kuò)資轉(zhuǎn)為外商絕對(duì)控股或獨(dú)資，同時(shí)又新成立一批外商獨(dú)資企業(yè)，這些企業(yè)的產(chǎn)品以占領(lǐng)國內(nèi)中高端市場(chǎng)為目標(biāo)，其技術(shù)由國外母公司控制?！拔覀冇檬袌?chǎng)換不到技術(shù)，又喪失市場(chǎng)，客觀上壓制了國內(nèi)

10、車床企業(yè)的產(chǎn)業(yè)升級(jí)?！?</p><p>　　首先是新產(chǎn)品開發(fā)能力不足。從行業(yè)總體看，基礎(chǔ)技術(shù)和關(guān)鍵技術(shù)研究還很薄弱，基礎(chǔ)開發(fā)理論研究、基礎(chǔ)工藝研究和應(yīng)用軟件開發(fā)還不能適應(yīng)數(shù)控技術(shù)快速發(fā)展的要求，全行業(yè)科技人才不足，缺乏高級(jí)技術(shù)人員，科技投入和科研設(shè)施尚不適應(yīng)等。據(jù)了解，當(dāng)前，國防軍工生產(chǎn)科研和國家重大工程提出的一批高端數(shù)控車床，如超重型雙龍門鏜銑床等，由于車床企業(yè)開發(fā)能力不足或完成開發(fā)的周期太長而不能承接合同，

11、一些數(shù)控專機(jī)也由于開發(fā)人員缺乏而拖延。 </p><p>　　同時(shí)，擴(kuò)大產(chǎn)能與未來實(shí)際需求錯(cuò)位也需引起重視。當(dāng)前行業(yè)企業(yè)技術(shù)改造項(xiàng)目的產(chǎn)能目標(biāo)過于龐大，技改項(xiàng)目產(chǎn)品的大型化、重型化趨勢(shì)明顯，高檔數(shù)控車床制造能力和功能部件的投入顯得不足。而且，車床企業(yè)自身裝備的數(shù)控化率低，信息化管理水平不高，生產(chǎn)效率低，企業(yè)的競爭力沒有得到足夠的提高，“從行業(yè)整體看，是否與未來的市場(chǎng)需求相符，還需要研究。</p>&

12、lt;p>　　數(shù)控機(jī)床是一種高技術(shù)設(shè)備,它可以通過改變數(shù)控程序,適應(yīng)不同零件的自動(dòng)加工,而且可以采用較大的切削用量,利用軟件進(jìn)行精度校正和補(bǔ)償,從而提高生產(chǎn)效率、加工精度和加工質(zhì)量,可以實(shí)現(xiàn)工序集中、一機(jī)多用,能完成復(fù)雜型面的加工。數(shù)控機(jī)床是現(xiàn)代制造業(yè)的關(guān)鍵設(shè)備,一個(gè)國家的數(shù)控機(jī)床的產(chǎn)量和技術(shù)水平在某種程度上反映了這個(gè)國家的制造業(yè)水平和競爭力。因此數(shù)控機(jī)床是將來機(jī)床研制的重點(diǎn)。本文針對(duì)經(jīng)濟(jì)型數(shù)控立式銑床及其控制系統(tǒng)的設(shè)計(jì)作簡要的討

13、論。</p><p>　　數(shù)控銑床是機(jī)械和電子技術(shù)相結(jié)合的產(chǎn)物，，它的機(jī)械結(jié)構(gòu)隨著電子控制技術(shù)的在銑床上的餓應(yīng)用，以及銑床性能提出的新要求，而逐步變化。與不同銑床相比數(shù)控銑床用三個(gè)數(shù)控伺服系統(tǒng)替代了傳統(tǒng)的機(jī)械進(jìn)給系統(tǒng)，其外形和結(jié)構(gòu)與普通銑床類似。數(shù)控銑床的設(shè)計(jì)主要是進(jìn)行主運(yùn)動(dòng)系統(tǒng)與進(jìn)給系統(tǒng)的機(jī)械結(jié)構(gòu)設(shè)計(jì)和控制系統(tǒng)設(shè)計(jì)</p><p>　　通常，一個(gè)典型的數(shù)控機(jī)床進(jìn)給系統(tǒng)，由位置比較，放大元

14、件、驅(qū)動(dòng)單元、機(jī)械傳動(dòng)裝置和檢測(cè)反饋元件等幾部分組成。其中，機(jī)械傳動(dòng)裝置是位置控制中的一個(gè)重要環(huán)節(jié)。這里所說的機(jī)械傳動(dòng)裝置，是指將驅(qū)動(dòng)源的旋轉(zhuǎn)運(yùn)動(dòng)變?yōu)楣ぷ髋_(tái)的直線運(yùn)動(dòng)的整個(gè)機(jī)械傳動(dòng)鏈，包括齒輪裝置、絲杠螺母副等中間傳動(dòng)機(jī)構(gòu)。</p><p>　　齒輪傳動(dòng)是應(yīng)用非常廣泛的一種機(jī)械傳動(dòng)，各種機(jī)床的傳動(dòng)裝置中幾乎都有齒輪傳動(dòng)。在數(shù)控機(jī)床伺服進(jìn)給系統(tǒng)中采用齒輪傳動(dòng)裝置的目的有兩個(gè)。一是將高轉(zhuǎn)速的轉(zhuǎn)矩的伺服電機(jī)（如步進(jìn)電機(jī)

15、、直流和交流伺服電機(jī)等）的輸出改變?yōu)榈娃D(zhuǎn)速大轉(zhuǎn)矩的執(zhí)行件的輸入；另一是使?jié)L珠絲杠和工作臺(tái)的轉(zhuǎn)動(dòng)慣量在系統(tǒng)中專有較小的比重。此外，對(duì)于開環(huán)系統(tǒng)還可以保證所要求的運(yùn)動(dòng)精度。 </p><p>　　為了盡量減小齒側(cè)間隙對(duì)數(shù)控機(jī)床加工精度的影響，經(jīng)常在結(jié)構(gòu)上采取措施，以減小或消除齒輪副的空程誤差。如采用雙片齒輪錯(cuò)齒法、利用偏心套調(diào)整齒輪副中心距或采用軸向墊片調(diào)整法消除齒輪側(cè)隙。</p><p>　

16、　這里進(jìn)給系統(tǒng)采用步進(jìn)電機(jī)開環(huán)控制，由滾珠絲杠螺母副來實(shí)現(xiàn) ，縱向和橫向進(jìn)給采用130BF001型步進(jìn)電機(jī)驅(qū)動(dòng)，經(jīng)圓柱齒輪傳動(dòng)帶動(dòng)滾珠絲杠傳動(dòng)，通過絲杠螺母機(jī)構(gòu)來實(shí)現(xiàn)；垂直方向進(jìn)給運(yùn)動(dòng)由150BF003型步進(jìn)電機(jī)驅(qū)動(dòng)，經(jīng)圓錐齒輪帶動(dòng)滾珠絲杠傳動(dòng)?？v向和橫向齒輪可采用斜齒輪彈簧調(diào)整法來消除齒輪間隙；垂直方向的齒輪間隙可采用圓錐齒輪周向彈簧調(diào)整法來消除。</p><p><b>　　附錄2</b>

17、;</p><p>　　What is the mechanical machining center? </p><p>　　Chinese Name: Machining Center English Name: Machining Center Title:</p><p>　　automatic tool changing definition: can a

18、utomatically replace the tool, NC machining of a workpiece fixture. Machining center, referred to as CNC, is composed of mechanical equipment and CNC system for machining of complex high automation tool shape workpiece.

19、Machining center is also called computer gongs. Machining center with knife, the knife has the function of automatic change, is the NC machining of a workpiece fixture after. Machining center is a kind of mechanical and

20、electrical products</p><p>　　(1) three axis machining center, </p><p>　　(2) four axis machining center</p><p>　　(3) of five axis machining center. Many items of equipment technology

21、 of the two machining center classification processing center varieties, specifications, here only the structure makes the classification. A vertical machining center, a machining center spindle axis arranged vertically.

22、 Its structure is of a fixed column, table is rectangular, no dividing rotating function, suitable for machining disc, cover, plate parts. There are three general rectilinear motion coordinate, NC rotary table a</p>

23、;<p>　　Future development trend of China's processing center!</p><p>　　未來發(fā)展的前景確實(shí)喜人，不過吳柏林也表示，由于我國工業(yè)基礎(chǔ)相對(duì)薄弱、以企業(yè)為主體的創(chuàng)新體系尚未建立、數(shù)控車床產(chǎn)業(yè)化時(shí)間短等原因，技術(shù)上和產(chǎn)業(yè)上與西方發(fā)達(dá)國家相比還存在一定差距，當(dāng)前的發(fā)展還需要注意四個(gè)方面的問題。</p><p&g

24、t;　　Future is indeed gratifying, but Wu Bailin also said that, due to China's relatively weak industrial base, with enterprises as the mainstay of the innovation system has not been established, CNC lathe industry in

25、 short time and other reasons, the technology and the industry compared with the western developed countries still have a certain gap, the current development also need to pay attention to four aspects the problem.</p

26、><p>　　2008年12月，《高檔數(shù)控車床與基礎(chǔ)制造裝備科技重大專項(xiàng)》得到國家批準(zhǔn)。專項(xiàng)對(duì)高檔數(shù)控車床等重大裝備、數(shù)控系統(tǒng)、功能部件與關(guān)鍵部件、共性技術(shù)、創(chuàng)新平臺(tái)建設(shè)及應(yīng)用示范工程做出了部署?！敖衲陮ｍ?xiàng)將開始逐步啟動(dòng)實(shí)施，車床工具行業(yè)自主創(chuàng)新能力將進(jìn)一步提高，將為國產(chǎn)高檔數(shù)控車床持續(xù)發(fā)展奠定堅(jiān)實(shí)的技術(shù)基礎(chǔ)?！眳前亓终f。</p><p>　　In 2008 December, "m

27、ajor projects" lathe and basic manufacturing equipment and technology approved by the national high-end cnc. Special made the deployment of high-grade CNC lathes and other major equipment, CNC system, functional com

28、ponents and key parts, common technology, innovation platform construction and application demonstration project. "Special will be started this year gradually started, the ability of independent innovation lathe too

29、l industry will be further enhanced, will lay a so</p><p>　　Accept China industrial daily news reporter interviewed three years ago, Wu Bailin put forward the need to attach importance to the development of

30、functional components, then he again put forward. Functional components development lags behind the situation does not seem too much. "The development of numerical control lathe to feature high level, specialized, l

31、arge-scale production base, at present our country difference." It is understood, the majority of high-grade CNC lathe main supporting or </p><p>　　Wu Bailin also believes that the current foreign inves

32、tment trend, attention should be paid to. In recent years, lathe industry some joint ventures are gradually expanding to foreign capital holding or sole proprietorship, and at the same time, the newly established a numbe

33、r of wholly foreign-owned enterprises, the products of these enterprises to occupy the domestic high-end market as the goal, the technology is controlled by the foreign parent company. "We use market for less than t

34、he technolo</p><p>　　The first is the lack of the ability of new product development. From the industry overall look, the technology and the key technology is still very weak foundation, foundation for the d

35、evelopment of theoretical research, basic technology research and application of software development can not meet the requirements of the rapid development of NC technology, science and technology talents in all industr

36、ies, the lack of senior technical personnel, investment in science and technology and research</p><p>　　At the same time, the expansion of production capacity and actual future demand mismatches also need to

37、 pay attention. The current industry enterprise technical transformation project of the production target is too large, large, heavy trends of technological transformation project products obviously, high-end CNC lathe m

38、anufacturing capacity and functional components of the input is insufficient. Moreover, the rate of NC lathe enterprises its equipment is low, the information management level i</p><p>　　NC machine tool is a

39、 kind of high technology equipment, it can change the NC program, adapt to the automatic processing of different parts, but also can use a larger amount of precision cutting, correction and compensation for the use of th

40、e software, so as to improve the production efficiency, machining precision and machining quality, can realize the process using concentrated, a machine, can complete the machining of complex surface. NC machine tool is

41、the key equipment of modern manufacturin</p><p>　　CNC milling machine products, machinery and electronic technology combined, the mechanical structure of the electronic control technology in milling hungry a

42、pplications, as well as the new requirements proposed by performance, and gradually change. Compared with different milling machine CNC milling machine to replace the traditional mechanical feed system with three CNC ser

43、vo system, its shape and structure and the ordinary milling machine similar. Design of NC milling machine is mainly the des</p><p>　　Usually, a typical NC machine tool feed system, the position is, the ampli

44、fication element, a driving unit, a mechanical driving device and a feedback element and other parts. Among them, the mechanical driving device is an important link in the position control. The mechanical transmission de

45、vice here, refers to the entire mechanical transmission chain rotational movement of the driving source into linear motion worktable, including gears, lead screw intermediate transmission mechanism.</p><p>　

46、　Gear is a mechanical transmission is widely used, almost all transmission devices of various machine in gear transmission. The gear transmission device in the NC machine tool servo system has two purposes. One is the hi

47、gh speed of the servo motor torque (such as stepper motors, DC and AC servo motor etc.) output change of low speed and high torque actuator input; the other is the moment of inertia of table and ball screw are smaller in

48、 proper proportion. In addition, for the open loop system can</p><p>　　In order to minimize the impact on small side gap of machining accuracy of NC machine tools, often take measures in structure, to reduce

49、 or eliminate the deadpath error of gear pair. Such as the use of double gear tooth method, using the eccentric sleeve adjusting gear center distance or the axial shim adjustment method to eliminate the gear backlash.<

50、;/p><p>　　Here the feed system uses the open-loop control of a stepper motor, a ball screw pair to achieve, longitudinal and transverse feed using 130BF001 type step motor drive, drive the ball screw drive with

51、 cylindrical gear transmission, to realize the screw nut mechanism; vertical direction feed motion driven by 150BF003 stepper motor, drives the ball screw drive the bevel gear. The longitudinal and transverse gear can be