機(jī)械設(shè)計(jì)制造及其自動(dòng)化論文，論文編號:JX1481  論文字?jǐn)?shù):19520.頁數(shù):31  附任務(wù)書，開題報(bào)告，文獻(xiàn)綜述，外文翻譯，CAD圖

摘     要
 當(dāng)今，各種現(xiàn)代化企業(yè)均擁有眾多的數(shù)字控制設(shè)備，充分開發(fā)應(yīng)用它們的功能，將對國民經(jīng)濟(jì)的發(fā)展發(fā)揮巨大的作用。科技創(chuàng)新開發(fā)機(jī)電一體化的機(jī)電產(chǎn)品更是時(shí)代的迫切要求。為了適應(yīng)數(shù)控技術(shù)和國民經(jīng)濟(jì)發(fā)展的需要，高等工科院校應(yīng)該將“數(shù)控技術(shù)”這種多學(xué)科交叉、綜合的高新技術(shù)給予重視。
 學(xué)校根據(jù)我們所學(xué)課程結(jié)合現(xiàn)代化數(shù)控技術(shù)的發(fā)展趨勢（即高速化，高效化，高精度化），對我們的畢業(yè)設(shè)計(jì)提出有關(guān)于數(shù)控機(jī)床改進(jìn)的課題，是對我們學(xué)生的專業(yè)知識的進(jìn)一步的提高，以及對現(xiàn)代化數(shù)控技術(shù)的追求。
 高速化，高精度化的數(shù)控技術(shù)對數(shù)控機(jī)床的硬件部件（即傳動(dòng)部件）的剛性及定位精度等提出了更高的要求。機(jī)床的進(jìn)給部件是整個(gè)輪廓描述和保證形位精度的最關(guān)鍵和最基本的部分。如果機(jī)床的進(jìn)給部件不能精確地控制輪廓的描述，即使它的主軸部件再好了不能完成零件的加工。
 數(shù)控機(jī)床對進(jìn)給部件的要求主要體現(xiàn)在滾珠絲杠以及其支撐部件上。不僅要對支撐滾珠絲杠的軸承提出特殊要求，更要對安裝軸承的軸承座提出更高的要求，軸承座的定位安裝精度直接影響軸承座的定位精度，也就導(dǎo)致滾珠絲杠能否達(dá)到需要的安裝精度，滾珠絲杠如果不能正確安裝，必然導(dǎo)致軸承加劇磨損，壽命降底。
 所以，軸承座精度是否達(dá)到要求也將影響機(jī)床的精度。而我們以此作為畢業(yè)設(shè)計(jì)，對軸承座作進(jìn)一步分析，雖不能有所發(fā)現(xiàn)或發(fā)明，卻對我們個(gè)人的專業(yè)知識，和設(shè)計(jì)思維有更進(jìn)一步的發(fā)展和提高。
 本文正文主要分三個(gè)部分：
 第一部分：根據(jù)現(xiàn)今數(shù)控機(jī)床的性能需求，結(jié)合現(xiàn)有的機(jī)床資料，開發(fā)出一種新型的或較全理的軸承座結(jié)構(gòu)方案；并分析該方案的可行性，同時(shí)也要選擇幾種現(xiàn)有的軸承座型號，與開發(fā)出的型號進(jìn)行對比，比較各軸承座之間的優(yōu)點(diǎn)，取華之精華，最終確定軸承座的結(jié)構(gòu)方案；確定該軸承座的工作環(huán)境，裝配關(guān)系等，繪制一套完整的零件裝配圖（A2以上圖幅），并繪制一套零件圖（A2圖幅）。
 第二部分：對軸承座的生產(chǎn)工藝進(jìn)行分析，確定軸承座的加工工藝過程，提交完整的機(jī)加工工藝過程卡片；提取工藝過程中最具代表性的工序即鏜孔工序，進(jìn)行完整分析，選擇加工環(huán)境，計(jì)算機(jī)加工數(shù)據(jù)，填寫該工序卡片。
 第三部分：設(shè)計(jì)鏜孔工藝的夾具——鏜孔夾具。根據(jù)加工環(huán)境設(shè)計(jì)一套適合大批量生產(chǎn)的夾具；對夾具工藝性進(jìn)行分析，繪制夾具裝配圖一張（A1圖幅）；并繪制其中一部分的夾具零件圖。
 關(guān)鍵詞：軸承座 結(jié)構(gòu)分析 鏜孔夾具 工藝分析
Abstract
 Today, modern enterprises have a large number of digital control equipment, the full development and application of their functions, development of the national economy will play a great role. The development of scientific and technological innovation of mechanical and electrical products Mechatronics is an urgent requirement of the times. In order to adapt to digital technology and the needs of national economic development, engineering colleges should be "digital technologies" such cross-multidisciplinary, comprehensive high-tech attention.
 Schools are based on our professional courses NC modern CNC technology combined with the development trend (that is, high-speed, efficient, and precision) of our students graduating from NC professional design to improve on the subject of CNC machine tools is on the expertise of our students to increase further, as well as the pursuit of modern CNC technology.
 High-speed, high-precision numerical control of CNC machine tool technology to the hardware components (ie, transmission parts) of the positioning accuracy, such as rigidity and a higher demand. Feed machine parts of the contour shape and position descriptions and to ensure the accuracy of the most critical and most basic part of. If the machine tool feed control components can not accurately describe the contour, even if it no matter how good the main components of the processing parts can not be completed.
 CNC machine tools to feed the requirements of the major components in the ball screw and its support components. Not only for the ball screw support bearings special requirements on the installation of bearings to bearing the higher requirements of the position bearing installation bearing a direct impact on the accuracy of the positioning accuracy, it can lead to ball screw to achieve the need for the installation of precision ball screws, if not installed correctly, will inevitably lead to increased bearing wear, down at the end of life.
 Therefore, whether the bearing accuracy requirements will also affect the accuracy of machine tools. And we as a graduation project, on the bearing for further analysis, though can not be found or invented, but our personal expertise, and design ideas to further develop and improve.
 In this paper, the main body is divided into three parts:
 The first part: According to the performance of today's CNC machine tool demand, combined with the existing tools of information, the development of a new or less the whole rationale of the bearing structure; and to analyze the feasibility of the program, but also to choose a few are some bearing models, and developed a comparative model to compare the advantages between the bearing, take the essence of China, and ultimately determine the structure of the program bearing; to determine the bearing of the working environment, the assembly and so on, drawing a complete sets of parts assembly (A2 Maps above), and the mapping of a set of parts diagram (A2 Maps).
 Part II: The bearing analysis of the production process to determine the bearing of the processing process, to submit a complete machining process card; extraction process in the most representative of the processes that boring process, a full analysis of options processing environment, the computer processing of data, fill in the card process.
 Part III: Design of the Jig Boring Process - jig boring. Processing environment in accordance with the design of a fixture suitable for mass production; of the fixture of the analysis process, drawing a fixture assembly (A1 Maps); and part of the fixture drawn parts diagram.
Keywords: Bearing Block; Structural Analysis; Jig Boring ; Process Analysis
目  錄

中文摘要……1            
英文摘要……3
目錄5  
第一章 緒論 7  
第二章 軸承座的功用及技術(shù)要求………..8
 2.1軸承座的功用…….......8 
 2.2軸承座的結(jié)構(gòu)和技術(shù)要求…… ..8
 2.3機(jī)械設(shè)計(jì)簡介………...9 
 2.4尺寸公差和表面粗糙度分析….10
     2.5軸承座結(jié)構(gòu)方案的選定……….12
第三章 軸承座的工藝分析……15
 3.1機(jī)械加工工藝在生產(chǎn)過程中的重要…….15
 3.2主要加工表面和加工難點(diǎn)分析 15
 3.3加工方案的選定…….16
 3.4定位基準(zhǔn)的選擇…….16
 3.5部分工藝說明……….17
第四章 軸承座的孔加工工藝分析及夾具設(shè)計(jì)……20
 4.1夾具在生產(chǎn)中的現(xiàn)實(shí)意義…….20
 4.2定位分析….20
 4.3夾緊分析….21 
 4.4精度分析….22
 4.5關(guān)于提高軸承座加工精度分析.23
第五章 設(shè)計(jì)平臺說明25
 5.1CAD技術(shù)的應(yīng)用……...25
 5.2AutoCAD技術(shù)的應(yīng)用...25
 5.3Pro/Engineer技術(shù)的應(yīng)用…….27
第六章 結(jié)論 ………..30
致謝………..31
參考文獻(xiàn)…..32