【正文】 畢業(yè)設(shè)計(jì)可以對(duì)數(shù)控加工中心有一個(gè)相當(dāng)全面的認(rèn)識(shí)。對(duì)本人來(lái)說(shuō)這是一個(gè)數(shù)控領(lǐng)域所不可缺少的一個(gè)過(guò)程，對(duì)于我們機(jī)械專業(yè)的學(xué)生來(lái)說(shuō)能有這樣的一個(gè)機(jī)會(huì)來(lái)接觸并設(shè)計(jì)數(shù)控機(jī)床是很難得的，在這個(gè)過(guò)程中拓寬了我的知識(shí)面，拓展了視野和思維。以前總以為軟件和硬件有著天壤之別，經(jīng)過(guò)這段時(shí)間我找到了兩者的統(tǒng)一，其實(shí)做事的方法是一樣的，認(rèn)真、細(xì)心加大膽。致 謝 大學(xué)生活一晃而過(guò)，回首走過(guò)的歲月，心中倍感充實(shí)，當(dāng)我寫(xiě)完這篇畢業(yè)論文的時(shí)候，有一種如釋重負(fù)的感覺(jué)，感慨頗多。在此論文撰寫(xiě)過(guò)程中，要特別感謝我的導(dǎo)師吳界益的指導(dǎo)與督促，同時(shí)感謝他的諒解與包容。本論文是在導(dǎo)師吳界益教授的悉心指導(dǎo)下完成的，導(dǎo)師淵博的專業(yè)知識(shí)，嚴(yán)謹(jǐn)?shù)闹螌W(xué)態(tài)度，精益求精的工作作風(fēng)，誨人不倦的高尚師德，嚴(yán)以律己、寬以待人的崇高風(fēng)范，樸實(shí)無(wú)華、平易近人的人格魅力對(duì)我影響深遠(yuǎn)。不僅使我樹(shù)立了遠(yuǎn)大的學(xué)術(shù)目標(biāo)、掌握了基本的研究方法，還使我明白了許多待人接物與為人處世的道理。本論文從選題到完成，每一步都是在導(dǎo)師的指導(dǎo)下完成的，傾注了導(dǎo)師大量的心血。在此，謹(jǐn)向?qū)煴硎境绺叩木匆夂椭孕牡母兄x！ 本論文的順利完成，離不開(kāi)各位老師、同學(xué)和朋友的關(guān)心和幫助。沒(méi)有吳老師的幫助也就沒(méi)有今天的這篇論文。求學(xué)歷程是艱苦的，但又是快樂(lè)的。感謝我的班主任劉科敏老師，謝謝他在這四年中為我們?nèi)嗨龅囊磺?，他不求回?bào)，無(wú)私奉獻(xiàn)的精神很讓我感動(dòng)，再次向他表示由衷的感謝。在這四年的學(xué)期中結(jié)識(shí)的各位生活和學(xué)習(xí)上的摯友讓我得到了人生最大的一筆財(cái)富。在此，也對(duì)他們表示衷心感謝。 謝謝我的父母，沒(méi)有他們辛勤的付出也就沒(méi)有我的今天，在這一刻，將最崇高的敬意獻(xiàn)給你們！ 本文參考了大量的文獻(xiàn)資料，在此，向各學(xué)術(shù)界的前輩們致敬！參 考 文 獻(xiàn) [1] 陳吉紅，數(shù)控機(jī)床電氣控制[M]，上海：華東科技大學(xué)出版社。[2] 李寧等編，運(yùn)動(dòng)控制系統(tǒng)[M]，北京：高等教育出版社，2004。[3] 劉啟新主編，電機(jī)與拖動(dòng)基礎(chǔ)[M]，北京：中國(guó)電力出版社，2005。[4] 三菱交流伺服MDSBSVJ2系列規(guī)格和操作說(shuō)明書(shū)[J]。[5] 三菱數(shù)控系統(tǒng)EZMOTIONNCM60S PLC 接口手冊(cè)[J]。[6] 三菱數(shù)控系統(tǒng)EZMOTIONNC E60 編程手冊(cè)[J]。[7] 汪木蘭主編，數(shù)控原理與系統(tǒng)[M]，北京：機(jī)械工業(yè)出版社，2004。[8] 熊光華主編，數(shù)控機(jī)床[M]，北京：機(jī)械工業(yè)出版社，2001。[9] 于春生等編，數(shù)控機(jī)床編程及應(yīng)用[M]，北京：高等教育出版社，2001。[10] 郁漢琪主編，電氣控制與可編程序控制器應(yīng)用技術(shù)[M]，南京：。[11] 郁漢琪主編，機(jī)床電氣及PLC實(shí)驗(yàn)指導(dǎo)書(shū)[J]，南京工程學(xué)院，2005。[12] 揚(yáng)公源主編，可編程序控制器[PLC] [M]，北京：電子工業(yè)出版社，2004。[13] 葉暉，梁福玖主編圖解NC數(shù)控系統(tǒng)[M]——三M64維修技巧，機(jī)械工業(yè)出版社。[14] 朱曉春主編，數(shù)控技術(shù)應(yīng)用[M]，北京：機(jī)械工業(yè)出版社，2001。[15] Diansheng C, Yazhou J. Libin Z. Reliability analysis of machining centers. Proceedings of the Fifth International Conference on Progress of Machining Technology. Beijing: Aviation Industry Press (2000) 514517.[16] GX Developer Ver7/Simulator 操作手冊(cè).[17] MITSUBISHI CNC M60S系列入門(mén)手冊(cè),臺(tái)灣三菱電機(jī)股份有限公司.[18] QinetiQ Ltd, Largearea IR negative luminescent devices[EB/OL].（2003）IEE Proceedings online no. [].67, doi: :.附錄一、 英語(yǔ)資料原文Fault Mode and Effect Analysis for VMC Vertical CNC Machining Centers Xianglei Chi，Xucheng Li (Beijing Machinery and Electricity Institute)Yazhou Jia，Jie Yu and Yi Dai (Jilin University)Abstract: FMEA method is used to analyze the faults of vertical machining center. We should find out the ratios of the fault positions and the fault modes, the weak links and latent weakness of the reliability. We should feed the analysis back to the departments responsible for the designing, manufacturing and assembling. Some measures are adopted and the reliability levels of Machining Center are enhanced clearly. Key Words: Machining Centre, FMEA, faults analysis, information collecting. 1. IntroductionMachining Center is a typical united product which bines modern information science with mechanical technology. With the development of science and technology and the continuous quotation from new technology, the mechanical and electronic products are getting more plicated and more plicated, the using condition of the products are more and more, so the demands for the products’ reliability are getting higher and higher.Fault Mode and Effect Analysis (FMEA) is an important part of the reliability and is also one of the important method and measure of reliability enhancing and designing. In order to enhance the reliability of the machining center, the weak links and latent weaknesses according to the analyses of the products’ construction and the fault modes must be found and the analyses must be fed back to the departments responsible for the designing, manufacturing, assembling, supplying and service after selling. Thus the products’ reliability can be enhanced.According to the fault data collected on the spots of VMC750 CNC Machining Centers, FMEA method is used to analyze the faults. We should find out the fault position and the rations of the fault modes and fault causes. We should find out the fault modes which greatly affect the reliability of the whole machine. We should further analysis the fault modes and fault causes which frequently arise in the subsystems and parts. We should seek the trends of the enhancement and design of the reliability. Through the analyses of fault modes and effects, we should learn the weak links of VMC CNC Machining Center and provide bases for removing the products’ faults.2. Fault modes of Machining CenterThe objective fault data should be firstly gained for carrying out FMEA analysis. So the enterprise should set up Failure Reporting, Analysis and Corrective Action Systems. The fault data are all collected from the user39。s fault reports and the manufacture39。s maintenance records. These data basically reflect the fault status of the machine center. When we collect the reliability information, the codes of the fault modes and subsystems (fault positions) must be defined at first so as to set up fault information data base [3]. In this paper, fault positions table (see table 1) and fault modes table (see table 2) of machining center are defined.Table1 subsystems of Machining Center (fault position)CodeNameCodeNameSSpindle boxXFeed system of X axisYFeed system of Y axisZFeed system of Z axisMTool magazineHManipulatorNCCNC systemDHydraulic systemPLCPLC systemWCooling systemLLubricating systemEPower supplyQProtective equipmentVElectrical systemTable2 Fault Modes of Machining CenterFault typeFault modeCodeFault modeCode01damaged01 spare parts damaged02 elements damaged0101010203 wire and cable broken04 wire and cable short circuits0103010402loosed01 tighten parts loosed02 protighten parts loosed0201020203 wire and electrical parts poor contacted020303blocked up or leaked out01 liquid, gas, oil leaked out030102 liquid, gas, oil blocked up030204dislocated01 tolerance of moving parts dislocated02 flows of hydraulic parts dislocated0401040203 spindle dislocated04 tool magazine dislocated0403040405moving01 spindle and tool magazine collided02 moving parts blocked up03 turning and moving parts