management systems and measures established by, and a number of pragmatic, combined part-time workforce education information, the protection of the digital campus construction and sustainable development. Six Bureau attaches great importance to information technology security, information technology security, entrust XX City Center for educational information and equipment dedicated to the work. Network security leading group was set up, chaired by the Education Bureau Chief, head, for XX education Metro-network and information security emergency response leadership. Deputy group leader for XX educational metropolitan area network and information security emergency response coordination, command. The team assist leader and deputy leader, responsible for network XX network security and information . Team. Information security work Conference held each semester, and deployment of information security of documents issued on a regular basis. Information security assessment is included in the annual index. Strictly implement the information security budget to ensure information security of investment. By XX, education information and equipment Centre XX network network security and information security. According to the information technology security requirements, issued a document requires schools (units) implement, defined the information security guidelines, specific work practices, procedures, and requirements. Clear industry information security incidents (accidents) to detect, report and disposal processes. According to self-examination, the school (units) basic established has network security management system; the school (units) according to this units actual, established has units personnel management, information system room management, and equipment management, and media management, and network security construction management, and shipped dimension management, and service outsourcing, management system; developed has computer and the network of network security responsibility held system, signed has network security responsibility; website of information management personnel is responsible for confidential management, password management, on computer enjoys independent right, User name and password of the computer for its proprietary, and release of provisions is prohibited, such as leaks, investigated for responsibility. According to who is in charge of whos in charge, who is running and who is responsible for, who uses principles of who is in charge of management schools (units) defined the roles and responsibilities of information security, assurance responsibilities to schools. XX city schools (units) total site 20, 19 of which were not classified security protection assessment, of which 1 (XX education and resource network) for classified security protection levels, without third-level information systems. Total education information systems 1 (XX education cloud platform), contains features with e-Government, resource library, test database, mail services, such as e-books, all intranet services. No for grade protection grading record and evaluation of school (units), requirements the school (units) according to information security grade protection about policy and standard, organization carried out information security grade protection security management system construction, and technology measures construction and grade evaluation, implementation grade protection system of the requirements, makes information system security management level obviouslyfacility up to 160 million Yuan, according to the standard, high quality planning XX educational metropolitan area network realizes Wan Zhaokuan to schools, hundreds of megabytes of broadband to the table, wire (ie: Web, video, audio) to the target, electronic whiteboards, multimedia classrooms, remote interactive video teaching system of modern educational equipment in the classroom. . With Intel company on XX Education City domain network of topic case design, relies on Cisco company thought Shu aid chuan project staff free provides has three years technology support, from 2009 began, according to high standards, and high of work thought, and manpower planning, and points step implementation, using school earthquake Hou reconstruction of opportunities, again planning elementary and middle schools campus network and education city domain network, and local broadcasting network company cooperation, using broadcast TV network, will physical fiber laying to each school, to minimum of cost achieved has physical fiber school school pass; Each school construction standards of campus network and network access to all rooms; XX education metropolitan area network center machine room equipment in the Ministry of education standardization management platform, the Central Library of audio-visual education resources, set up a Chinese teacher education cloud platform, implemented links the two platforms. At present, the citys primary and middle school students to computer 3198, vitality than 10:1; 809 equipment classes through the classroom (primary and secondary); 36 of the campus network. The establishment of an advanced, practical Gigabit educational metropolitan area network, the citys schools have access to educational metropolitan area network, schools have computer networks, closed-circuit television network, broadcast networks into the classrooms, realize the triple play. Schools share Internet bandwidth, can meet the needs of teaching of the school office and at any time. According to Ministry of education on full started implementation teaching points digital education resources full cover project of notification (taught technical letter (2012) 74th,) and XX Province Department of education on issued XX province teaching points digital education resources full cover project implementation views of notification (chuan taught letter (2013) 18th,) requirements, I city 6 a teaching points implementation teaching points digital education resources full cover project, combined I city specific situation, developed issued has XX City Bureau on teaching points digital resources full cover project of implementation programme, Established XX, full coverage of digital resources in modern distance education teaching project leading group, XX, chaired the Secretary for education. Established, digital resources in modern distance education teaching, XX full coverage project group, XX, Director of the Center for educational information and equipment chaired Zhu Guiyan, responsible for distance education digital resources covering project work. Projects in XX city school digital resources in modern distance education teaching full-coverage project leading group, digital resources in modern distance education teaching, and XX full coverage project group leadership and organization, in accordance with the unified arrangement of the whole province, responsible for university education digital resources covering project management and implementation. According to provinces arrangements, I Center has arrangements Gong第四章 汽車焊裝線通用夾具的裝配工藝隨著汽車制造業(yè)的飛速發(fā)展，技術(shù)競爭愈來愈激烈，人們對于汽車車身的設(shè)計(jì)和制造提出了更高的要求。汽車車身焊裝生產(chǎn)技術(shù)在其中扮演了重要的角色。6.1 車身焊裝通用夾具的應(yīng)用對象汽車車身殼體是一個(gè)復(fù)雜的結(jié)構(gòu)件，一輛汽車的車身由數(shù)百個(gè)沖壓件，經(jīng)點(diǎn)焊、凸焊、氣體保護(hù)焊、釬焊以及粘結(jié)等工藝連接而成。定位迅速準(zhǔn)確的焊裝夾具、日益精湛的焊接技術(shù)、日臻完善的質(zhì)量控制手段、立體布置的自動化生產(chǎn)線和大量自動化焊接設(shè)備的應(yīng)用，構(gòu)成了現(xiàn)代汽車車身焊裝技術(shù)。車身在焊裝過程中，需要專門的焊裝夾具來對零件或合件的相對位置進(jìn)行定位，并將其夾緊貼合。一般來說，為適應(yīng)同類汽車車型的生產(chǎn)制造，縮短新車型推出的周期，降低工裝設(shè)備成本，提高企業(yè)的市場競爭力，許多通用夾具的設(shè)計(jì)應(yīng)運(yùn)而生。汽車白車身焊裝線制造 的 汽車焊裝線通用夾具的裝配工藝 6.2 車身焊裝通用夾具的特點(diǎn)6.2.1 定位夾緊部位設(shè)計(jì)成可調(diào)整結(jié)構(gòu)焊裝夾具由定位與夾緊兩大因素構(gòu)成，可行的焊裝夾具必須保證定位準(zhǔn)確，和鈑金件良好的貼合性。同時(shí)定位夾緊部位設(shè)計(jì)成在適用車型范圍內(nèi)可調(diào)整的結(jié)構(gòu)，如圖一所示：壓緊塊和定位塊是對應(yīng)于不同的車型成套使用的，為盡量減少壓緊塊和定位塊的工裝儲備，在簡單車型更換時(shí)（如夾緊部位僅在一個(gè)方向上平移，而夾緊的鈑金件斷面形狀不發(fā)生變化），則加裝調(diào)整墊塊來解決。6.2.2 采用可移動夾具單元設(shè)計(jì)汽車白車身焊裝線制造 的 汽車焊裝線通用夾具的裝配工藝 汽車白車身焊裝線制造 的 汽車焊裝線通用夾具的裝配工藝 當(dāng)車型更換時(shí)，在夾緊部位發(fā)生較大范圍移動的情況下，一般把一個(gè)或幾個(gè)夾具單元放在移動板上，而移動板則靠滾珠導(dǎo)軌來支撐和導(dǎo)向，并有氣缸或液壓缸推動。如圖二所示。6.2.3 大量使用標(biāo)準(zhǔn)化零部件為提高焊裝夾具零部件的互換性，縮短焊裝夾具的研制周期，降低焊裝夾具的設(shè)計(jì)制造成本，通用焊裝夾具盡可能的使用了標(biāo)準(zhǔn)化零部件。如標(biāo)準(zhǔn)支架、銷支架、鉸接頭、導(dǎo)向裝置等等。6.3. 通用焊裝夾具的裝配工藝6.3.1 裝配類型焊裝夾具裝配工藝的裝配類型按其運(yùn)動特征來區(qū)分可分為固件裝配、旋轉(zhuǎn)副裝配、滑動副裝配三大類。6.3.1.1 固件裝配汽車白車身焊裝線制造 的 汽車焊裝線通用夾具的裝配工藝 是指非運(yùn)動的結(jié)構(gòu)件或定位件的裝配，如夾具單元的支撐部件、固定安裝方式的定位部件。通常夾具支撐件的裝配精度為IT10IT12，定位件的裝配精度為IT8IT10。由于焊裝夾具的零件有較大的相似性，一般成組加工制造而成，在裝配的時(shí)候則廣泛采用修配法和調(diào)整法來裝配成合件。修配法是指在零件上預(yù)留修配量，在裝配過程中用手工銼刮研等方法修去零件上的多余部分材料，使裝配精度滿足技術(shù)要求。調(diào)整法是指利用可調(diào)整零件或依靠增減定尺寸零件（如墊片、調(diào)整墊塊）進(jìn)行裝配的方法。汽車白車身焊裝線制造 的 汽車焊裝線通用夾具的裝配工藝 夾具定位銷的裝配是固件裝配中一種較特殊的類型。夾具定位銷按焊裝夾具設(shè)計(jì)的出發(fā)點(diǎn)分為現(xiàn)場銷和NC銷兩種類型?，F(xiàn)場銷是在基座上不打銷孔，而只在夾具安裝支座上打預(yù)孔，待全部夾具裝配并調(diào)試完畢以后再擴(kuò)鉸銷孔并打入定位銷。NC銷則是在制造基座和夾具安裝支座的時(shí)候就加工好銷孔，這種方式依賴于精確的汽車車體數(shù)據(jù)和完善的數(shù)控加工手段，目前國內(nèi)較少采用。6.3.1.2 旋轉(zhuǎn)副裝配汽車白車身焊裝線制造 的 汽車焊裝線通用夾具的裝配工藝 焊裝夾具的旋轉(zhuǎn)副裝配按其裝配要求來分有兩種。一種是旋轉(zhuǎn)定位夾緊零件的旋轉(zhuǎn)副裝配，這類裝配普遍采用鉸支銷外套無油軸承的裝配方式，其精度一般為IT6IT7。一種是普通機(jī)構(gòu)的旋轉(zhuǎn)副裝配，精度一般為IT8IT10。夾具裝配中有部分使用了企業(yè)通用制件的（如銷軸類零件）可以采用復(fù)合選配法來達(dá)到規(guī)定的裝配精度，即零件預(yù)先測量分組，裝配時(shí)再在各對應(yīng)組中憑工人經(jīng)驗(yàn)直接選配。6.3.1.3 滑動副裝配焊裝夾具中包含滑動副裝配的機(jī)構(gòu)有移動板（拖板）、頂升裝置、移動銷等，一般涉及到導(dǎo)軌或?qū)驐U的裝配。a). 導(dǎo)軌裝配：安裝導(dǎo)軌的基準(zhǔn)面的平面度應(yīng)小于0.06/100mm(IT10)，雙導(dǎo)軌的安裝還要求導(dǎo)軌平行度應(yīng)達(dá)到0.2/1000mm(IT8)。為達(dá)到導(dǎo)軌安裝的精度要求，應(yīng)首先安裝導(dǎo)軌，安裝時(shí)先固定導(dǎo)軌中間的位置，再分段測量并調(diào)整其安裝位置，每測一段即擰緊改測點(diǎn)的安裝螺釘；待測量調(diào)整完畢以后從中間向兩邊對稱擰緊全部的安裝螺釘；最后將導(dǎo)軌滑塊移至導(dǎo)軌中間附近，將移動板或承載板安裝在導(dǎo)軌滑塊上。b). 導(dǎo)向桿導(dǎo)向桿的安裝要求一般低于導(dǎo)軌的安裝要求。這是由于為盡量縮小導(dǎo)向機(jī)構(gòu)的安裝尺寸，導(dǎo)向機(jī)構(gòu)上一般沒有可調(diào)裝置，因此允許導(dǎo)向桿和導(dǎo)向套之間存在一定的間隙，以此來補(bǔ)償加工誤差所帶來的安裝誤差。導(dǎo)向桿和導(dǎo)向套之間的配合公差一般為g7/H8，實(shí)際裝配時(shí)必須留出0.020.05mm的間隙。6.3.2 裝配工藝流程通用汽車焊裝夾具的裝配工藝流程較單一， 一般在生產(chǎn)制造當(dāng)中直接利用裝配工藝流程圖來代替工序卡片。如圖三所示為某汽車焊裝線中單個(gè)工位的夾具裝配工藝流程示意簡圖。6.4結(jié)束語綜上所述，通用汽車焊裝夾具的應(yīng)用可以帶來良好的經(jīng)濟(jì)效益。a. 換型過渡快、定位準(zhǔn)確、夾緊可靠、調(diào)整方便。b. 經(jīng)濟(jì)性好。多種車型的交替使用，有效提高了工裝利用率。節(jié)省占地面積，提高了廠房利用率。c. 裝配工藝的不斷完善和改良，有利于提高夾具精度和汽車車體的焊接質(zhì)量，提高產(chǎn)品競爭力。消火栓給水系統(tǒng)和自動噴淋給水系統(tǒng)由設(shè)在地下二層的消火栓給水泵和自動噴淋給水泵經(jīng)消防水池到消防給水泵，再向大樓各層消火栓和噴淋管網(wǎng)供水。同時(shí)消火栓給水系統(tǒng)和自動噴淋給水系統(tǒng)管網(wǎng)均與屋頂設(shè)置的生活、消防共用水箱相連、并通過屋頂設(shè)置的消防穩(wěn)壓設(shè)備進(jìn)行穩(wěn)壓。improve, security prevention capacity obviously enhanced, security hidden and security accident obviously reduced, effective guarantees information health development. XX Education Centre regularly carry out day-to-day network security monitoring information and equipment. By the appropriate technical staff, XX network engine room maintenance staff on site management and maintenance on a regular basis, scheduled viewing of networks, systems, databases and associated equipment operating conditions, and make a record. Computer lab maintenance managers regularly run a variety of devices in the school information system parameters, server systems and various data backup, so that there was a hardware failure in a system crash can resume quickly and efficiently. Computer lab maintenance managers establish a network antivirus system, Avira Virus system on a regular basis, and anti-virus software security assessment, time to upgrade. Computer lab maintenance management for all equipment in the room a regular dust, replace the old label. Regularly host servers, network switches, core routing, firewalls, hardware maintenance, such as equipment failure, should be processed in a timely manner in order to ensure safe and reliable operation of the system. In XX city information and equipment was established within the Centre, educational metropolitan area network center machine room XX. Servers and data stores and applications to set up in XX City metropolitan area network center machine room. WindowsServer2003, windowsServer2008, windowsServer2012, Linux, the operating system, the database for SQL Server2008, Office software, such as Microsoft Office software. Schools (units) of computer, information system security products for domestic products, including the use of 360 and kingsoft Internet security software. XX education metropolitan area network used by the server for HP, firewall and information security product for Huawei and Cisco products. In their daily work, to publicize related knowledge and information security considerations. Enhanced global awareness of network and information security, and strive to achieve network everyone knows security and virus before the guard, to improve network and information security, ensure that the XX education system network and information system security. Tracking reporting system requires all parties to strengthen collaboration, work closely with emergency safety plan developed XX education metropolitan area network, regularly carry out emergency drills, and carried out special funds every year to protect the security of information. Annual 2-3 professional training for network managers in the city, forming technology with a strong professional and technical team, school network managers on common network failures and be capable of solving security issues. Issues that cannot be resolved, timely forms of meetings, such as meetings, analysis, and solutions through a meeting, without rolling up the ability to solve problems, and feedback to superiors in writing departments to resolve. Through self-examination, we are well aware, relative lack of investment in education, facilities and equipment for further updates, education development is still uneven, new education concepts need to be further enhanced to some extent and restricting the development of city education. We will take the opportunity of government supervision, to strive for the province education demonstration counties as a driving force, further increase input in education, efforts to promote thelong wing, and Li Wanfu, and Michael Jenkins, and Chen Jian, and Song and xiaochuanyun, 7 bit comrade participate in province backbone face-to-face or network learning, do each teaching points are has teachers participate in training, October 17, 2013, issued XX city education information and equipment Center on requirements the teaching points school for good satellite ground station installation prepared of notification, requirements school related management personnel familiar XX province teaching points digital education resources full cover project construction management manual, Particularly with regard to installation preparation parts according to the point of XX province full coverage of digital educational resources in the project construction management manual . Devices are able to receive TV signals and IP data, the schools have school training and school-based application to use good. Actively organize implementation of a division of a class, a teacher in one class activity. XX in XX city first to complete full registration of teachers working in this city, XX, Sun class rate of 54 per cent respectively, the forefront. In XX, a division of a class, a class a total ranked first in Division activities, was awarded the national ministerial one, 2 provincial second prize, third prize at the provincial level 3. Actively organize implementation of the e-learning space the work of everyone. At present, in the open space of public service platform of provincial educational resources teachers number 2444, 83 to the total number of teachers, student number is 6569 of the open space, the citys total students 18.31 to (junior high school students in 30 above, students not required), registration number to meet the requirements of teachers and students, in XX in first place. Five, information technology application capability as a