丁兆福外文加翻譯

1、山東理工大學(xué) 畢業(yè)設(shè)計(jì)（論文）外文資料及譯文學(xué) 院： 機(jī)械工程學(xué)院 專(zhuān) 業(yè)： 機(jī)械設(shè)計(jì)制造及其自動(dòng)化 學(xué)生姓名： 丁兆福 學(xué) 號(hào)： 0732107935 指導(dǎo)教師： 王勇 7外文和翻譯CNC FLOOR BORIING AND MILLING MACHINEDESIGN TRANSFORMATIONBoring and milling machine as a basis for large-scale landing a lot of equipment in the processing and manufacturing equipment, is widely used. In rec

2、ent years, with the technical level of equipment manufacturing industry significantly increased size of the work piece machining accuracy and quality requirements are becoming increasingly improve, the traditional processing technology can not meet the market economy has a high efficiency, high qual

3、ity, multi-processing requirements change , CNC machining is imperative.However, investing in new large-scale investment in CNC Floor Boring and Milling Machine is not only large and long manufacturing cycle; the same time, out of the existing milling machine is not only a waste of large floor is hu

4、ge and the current level of technology to make the old equipment can radiate youth and vitality.1, Transformation of the Basic Principles of NC Mechanical parts for machine tools, CNC machines and general machine tools are basically the same basic parts as large as possible be preserved and utilized

5、.Use of modern communication technology and digital spindle drive machine CNC technology on the main transmission part, the feed drive section, in accordance with the standards of the new CNC machine tools, conduct a thorough upgrade.Choose the world's leading CNC system and servo motor, re-desi

6、gn and manufacture of machine electronic control system; column lateral movement of bodies to replace the double adjustable preload feed a small helical gear boxes and high-precision helical rack transmission mechanism; spindle box down institutions Dress Ball. Original DC spindle motor drive system

7、 to the Siemens digital AC spindle drive system, the installation of the feed axis movement and rotation of grating position encoders. CNC machine tools in order to achieve the whole closed-loop control. And has automatic and manual work, to reach the current advanced level of similar machines.2, La

8、rge Floor CNC Milling Machine Design and Reconstruction Project Lateral movement with the grinding bed column (length 12m), before the column of the rail surface, repair processing column skateboard; bed set mounted high-precision helical rack. AC Digital Spindle headstock drives system according to

9、 requirements, design transformation spindle speed change mechanism.Replacement of lateral movement organizations column adjustable preload dual-feed a small helical gear boxes and high-precision helical rack transmission, AC servo motor drive. Lateral movement of the column bed upon installation of

10、 the German "HEIDEN-HAIN" grating, lateral column feed to achieve closed loop control of movement.Headstock vertical motion mechanism driven by AC servo motor, the mechanical reduction gear and dress of the ball screw pair, driving along the spindle box to complete before the column guide

11、vertical movement. Column before the installation of the vertical grating on the direction of motion, the spindle box vertical feed movements of the closed loop control.Vertical movement of the boring bar axis AC servo motor driven organization, the mechanical reduction gear and dress of the ball sc

12、rew nut to drive the boring bar to complete the longitudinal axis of movement. Axis of linear motion in the direction of boring bar installed on the grating, to achieve the vertical movement of the boring bar axis closed loop control. Ram vertical moving mechanism driven by AC servo motor, the mecha

13、nical reduction gear and dress of the ball screw pair, led to complete longitudinal movement of ram. Meanwhile, the vertical linear motion in the direction of ram to install grating, vertical ram movement to achieve closed loop control. Rotary table driven by AC servo motor, the rotary table install

14、ed at the end spindle rotary position encoder, high precision indexing closed loop positioning control. Longitudinal Movement of AC servo motor drive, U-axis support bearings at both ends of the ball screw replacement, installing grating, the full realization of U-axis numerical control, and closed

15、loop control.Lubrication of the movement Guide way automatic centralized lubrication station and achieve timing, quantitative, fixed-point automatic lubrication. Replaced by standard CNC machine tool linear feed axis of the towline and the installation of guard rails and limit protection switch. Sie

16、mens 840D CNC system or use Favors 8070CNC CNC system, may also need to use well-known manufacturers of CNC system and the same manufacturer of the AC servo motor, servo drive systems and PLC and so on. Need to have: interpolation functions, compensation, data transmission functions, polar functions

17、, circulatory function, diagnostic alarm, PC diagnostic alarm function, three-dimensional graphics display analog functions, manual and automatic programming processing procedures and storage and a variety of parameters called and other functions. System features a 6 servo axes, with a 4-axis functi

18、on. Cabinet equipped with air conditioning and lighting panels function.Boring and milling machine to improve the floor work in two ways: automatically when the work and from the NC boring and milling machine to use as an ordinary number. Re-design to create a button to stop hanging concentrated, un

19、ified control of the machine. The button station will feed all of the control of movement and the main transmission operation functions together. Button station with full CNC keyboard, control panel for the Chinese language interface, the display is flat LCD color display. Configure multiple keys an

20、d hand-held manual pulse generator operation unit. Hydraulic system according to the spindle speed and feed motion machine locating and clamping action to re-design and manufacturing requirements.3, CNC Floor Boring and Milling Machine Reformed With Common Type and Floor Type CNC Boring and Milling

21、Machine Compared the Main ParametersNC reformed to T6920 and Y6920 common type and TK6920 CNC floor-type milling machine, for example, three in the boring bar diameter, the movement of the moving parts of the travel range, boring and milling plane diameter range of parameters consistent with other a

22、spects. But the NC transformation involves the spindle speed range, torque characteristics and the feed part of the feed rate range of motion, movement accuracy, precision, automation and process efficiency, etc. After comparing the parameters to prove that modified the landing NC relative to the or

23、dinary type boring and milling machine milling machine landing performance parameters to achieve a technological leap, its function and the main performance parameters and new CNC floor type boring and milling machines are basically the same performance parameters. While retaining a common function

24、of digital milling machine, so that the machine type and the general set of digital numerical control milling machine landing work characteristics in one. However, the cost of new products compared to CNC Floor Boring and Milling Machine, have been substantially reduced.Common ground boring and mill

25、ing machine in the complex processing of large holes in the cabinet when repeated measurements required manual alignment, low efficiency, accuracy, difficult to adapt to a variety of complex large box size holes changing requirements. The processing of CNC Floor Boring and Milling Machine CNC progra

26、m control by the servo axes motion positioning or interpolation to complete movement, the linkage with the spindle, turning heads driven plane coordinate system to complete the processing of any curve; in the processing of large box holes when the repeated measurements without manual alignment, as l

27、ong as the operator input to the CNC program and the relative position coordinates of each hole size, with a good tool and run the procedures. Processing efficiency, high precision, quality, size of holes in the complex plane curve profile variability and change in working hours, as long as the proc

28、essing program can adapt to change.After transformation, NC boring machine for pieces made of steel, cast iron and nonferrous metal parts of the rough, finishing. Both a larger size to complete the major type of box the hole boring process, but also can be done face milling, drilling, reaming, reami

29、ng and thread cutting and other processing requirements of the hole. Great to meet users holes work piece complex distribution box, high quality, high efficiency, strong adaptability requirements, facilitate the operation, improve productivity and reduce production costs.落地鏜銑床的數(shù)控化改造設(shè)計(jì)大型落地鏜銑床作為基礎(chǔ)設(shè)備大量

30、裝備于加工制造業(yè)，應(yīng)用非常廣泛。近年來(lái)，隨著裝備制造業(yè)技術(shù)水平的大幅度提高，工件的加工尺寸精度和質(zhì)量要求也日趨提高，傳統(tǒng)的加工工藝已經(jīng)不能適應(yīng)市場(chǎng)經(jīng)濟(jì)條件下的高效率、高質(zhì)量、多變化的加工要求，數(shù)控化加工勢(shì)在必行。然而，投資購(gòu)買(mǎi)全新的大型數(shù)控落地鏜銑床不僅投資大而且制造周期長(zhǎng)；同時(shí)，淘汰現(xiàn)有的大型落地鏜銑床不但浪費(fèi)巨大，而且以現(xiàn)在的技術(shù)水平完全可以使老設(shè)備煥發(fā)青春和活力。1、 數(shù)控改造的基本原則對(duì)機(jī)床的機(jī)械部分，數(shù)控機(jī)床和普通機(jī)床基本一致的大型基礎(chǔ)性零部件盡量最大可能予以保留和利用。利用現(xiàn)代化的交流數(shù)字主軸驅(qū)動(dòng)技術(shù)和計(jì)算機(jī)數(shù)控技術(shù)對(duì)機(jī)床的主傳動(dòng)部分，進(jìn)給傳動(dòng)部分，按照全新的數(shù)控機(jī)床的標(biāo)準(zhǔn)，進(jìn)行全

31、面徹底的升級(jí)改造。選擇世界領(lǐng)先的數(shù)控系統(tǒng)和交流伺服電動(dòng)機(jī)，重新設(shè)計(jì)制造機(jī)床電控系統(tǒng)；立柱橫向移動(dòng)機(jī)構(gòu)更換為可調(diào)預(yù)緊力的雙小斜齒輪進(jìn)給箱和高精度斜齒條傳動(dòng)機(jī)構(gòu)；主軸箱升降機(jī)構(gòu)換裝滾珠絲杠。將原直流主軸電動(dòng)機(jī)驅(qū)動(dòng)系統(tǒng)改為西門(mén)子交流數(shù)字主軸驅(qū)動(dòng)系統(tǒng)，各進(jìn)給運(yùn)動(dòng)軸加裝光柵尺和旋轉(zhuǎn)位置編碼器。從而實(shí)現(xiàn)機(jī)床的數(shù)控化、全閉環(huán)控制。并具有自動(dòng)和手動(dòng)兩種工作方式，使其達(dá)到目前同類(lèi)機(jī)床的先進(jìn)水平。2、 大型落地鏜銑床的數(shù)控化設(shè)計(jì)及改造項(xiàng)目磨削加工立柱橫向移動(dòng)用床身（長(zhǎng)度12m）、前立柱各導(dǎo)軌面，加工修復(fù)立柱滑板；床身鑲裝高精度斜齒條。主軸箱按交流數(shù)字主軸驅(qū)動(dòng)系統(tǒng)要求，設(shè)計(jì)改造主軸變速機(jī)構(gòu)。立柱橫向移動(dòng)機(jī)構(gòu)更換為可

32、調(diào)預(yù)緊力的雙小斜齒輪進(jìn)給箱和高精度斜齒條傳動(dòng)機(jī)構(gòu)，用交流伺服電動(dòng)機(jī)驅(qū)動(dòng)。立柱橫向運(yùn)動(dòng)床身上加裝德國(guó)“HEIDEN-HAIN”光柵尺，實(shí)現(xiàn)立柱橫向進(jìn)給運(yùn)動(dòng)的全閉環(huán)控制。主軸箱垂直運(yùn)動(dòng)機(jī)構(gòu)采用交流伺服電動(dòng)機(jī)驅(qū)動(dòng)，經(jīng)機(jī)械減速裝置和換裝的滾珠絲杠螺母副，帶動(dòng)主軸箱沿前立柱導(dǎo)軌完成垂直運(yùn)動(dòng)。前立柱垂直運(yùn)動(dòng)方 向上加裝光柵尺，實(shí)現(xiàn)主軸箱垂直進(jìn)給運(yùn)動(dòng)的全閉環(huán)控制。鏜桿軸縱向移動(dòng)機(jī)構(gòu)采用交流伺服電動(dòng)機(jī)驅(qū)動(dòng)，經(jīng)機(jī)械減速裝置和換裝的滾珠絲杠螺母副，帶動(dòng)鏜桿軸完成縱向移動(dòng)。在鏜桿軸直線運(yùn)動(dòng)方向上加裝光柵尺，實(shí)現(xiàn)鏜桿軸縱向移動(dòng)的全閉環(huán)控制?；砜v向移動(dòng)機(jī)構(gòu)采用交流伺服電動(dòng)機(jī)驅(qū)動(dòng)，經(jīng)機(jī)械減速裝置和換裝的滾珠絲杠螺母副，帶動(dòng)滑枕完成縱向移動(dòng)。同時(shí)，在滑枕縱向直線運(yùn)動(dòng)方向上加裝光柵尺，實(shí)現(xiàn)滑枕縱向移動(dòng)的全閉環(huán)控制。工作臺(tái)旋轉(zhuǎn)采用交流伺服電動(dòng)機(jī)驅(qū)動(dòng)，在旋轉(zhuǎn)工作臺(tái)主軸末端加裝旋轉(zhuǎn)位置編碼器，實(shí)現(xiàn)高精度分度定位的全閉環(huán)控制。工作臺(tái)縱向移動(dòng)采用交流伺服 電動(dòng)機(jī)驅(qū)動(dòng)，U軸更換滾珠絲杠兩端支撐軸承，加裝光柵尺，實(shí)現(xiàn)U軸的全數(shù)控化、全閉環(huán)控制。各運(yùn)動(dòng)導(dǎo)軌副的潤(rùn)滑采用自動(dòng)集中潤(rùn)滑站，實(shí)現(xiàn)定時(shí)、定量、定點(diǎn)自動(dòng)潤(rùn)滑。按數(shù)控機(jī)床標(biāo)準(zhǔn)更換各直線進(jìn)給軸拖鏈并加裝導(dǎo)軌防護(hù)罩及限位保護(hù)開(kāi)關(guān)。選用西門(mén)子840D 數(shù)控系