汽车焊装线焊装夹具的装配工艺

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 汽车焊装线通用夹具的装配工艺随着汽车制造业的飞速发展，技术竞争愈来愈激烈，人们对于汽车车身的设计和制造提出了更高的要求。汽车车身焊装生产技术在其中扮演了重要的角色。6.1 车身焊装通用夹具的应用对象汽车车身壳体是一个复杂的结构件，一辆汽车的车身由数百个冲压件，经点焊、凸焊、气体保护焊、钎焊以及粘结等工艺连接而成。定位迅速准确的焊装夹具、日益精湛的焊接技术、日臻完善的质量控制手段、立体布置的自动化生产线和大量自动化焊接设备的应用，构成了现代汽车车身焊装技术。车身在焊装过程中，需要专门的焊装夹具来对零件或合件的相对位置进行定位，并将其夹紧贴合。一般来说，为适应同类汽车车型的生产制造，缩短新车型推出的周期，降低工装设备成本，提高企业的市场竞争力，许多通用夹具的设计应运而生。汽车白车身焊装线制造 的 汽车焊装线通用夹具的装配工艺 6.2 车身焊装通用夹具的特点6.2.1 定位夹紧部位设计成可调整结构焊装夹具由定位与夹紧两大因素构成，可行的焊装夹具必须保证定位准确，和钣金件良好的贴合性。同时定位夹紧部位设计成在适用车型范围内可调整的结构，如图一所示：压紧块和定位块是对应于不同的车型成套使用的，为尽量减少压紧块和定位块的工装储备，在简单车型更换时（如夹紧部位仅在一个方向上平移，而夹紧的钣金件断面形状不发生变化），则加装调整垫块来解决。6.2.2 采用可移动夹具单元设计汽车白车身焊装线制造 的 汽车焊装线通用夹具的装配工艺 汽车白车身焊装线制造 的 汽车焊装线通用夹具的装配工艺 当车型更换时，在夹紧部位发生较大范围移动的情况下，一般把一个或几个夹具单元放在移动板上，而移动板则靠滚珠导轨来支撑和导向，并有气缸或液压缸推动。如图二所示。6.2.3 大量使用标准化零部件为提高焊装夹具零部件的互换性，缩短焊装夹具的研制周期，降低焊装夹具的设计制造成本，通用焊装夹具尽可能的使用了标准化零部件。如标准支架、销支架、铰接头、导向装置等等。6.3. 通用焊装夹具的装配工艺6.3.1 装配类型焊装夹具装配工艺的装配类型按其运动特征来区分可分为固件装配、旋转副装配、滑动副装配三大类。6.3.1.1 固件装配汽车白车身焊装线制造 的 汽车焊装线通用夹具的装配工艺 是指非运动的结构件或定位件的装配，如夹具单元的支撑部件、固定安装方式的定位部件。通常夹具支撑件的装配精度为IT10IT12，定位件的装配精度为IT8IT10。由于焊装夹具的零件有较大的相似性，一般成组加工制造而成，在装配的时候则广泛采用修配法和调整法来装配成合件。修配法是指在零件上预留修配量，在装配过程中用手工锉刮研等方法修去零件上的多余部分材料，使装配精度满足技术要求。调整法是指利用可调整零件或依靠增减定尺寸零件（如垫片、调整垫块）进行装配的方法。汽车白车身焊装线制造 的 汽车焊装线通用夹具的装配工艺 夹具定位销的装配是固件装配中一种较特殊的类型。夹具定位销按焊装夹具设计的出发点分为现场销和NC销两种类型。现场销是在基座上不打销孔，而只在夹具安装支座上打预孔，待全部夹具装配并调试完毕以后再扩铰销孔并打入定位销。NC销则是在制造基座和夹具安装支座的时候就加工好销孔，这种方式依赖于精确的汽车车体数据和完善的数控加工手段，目前国内较少采用。6.3.1.2 旋转副装配汽车白车身焊装线制造 的 汽车焊装线通用夹具的装配工艺 焊装夹具的旋转副装配按其装配要求来分有两种。一种是旋转定位夹紧零件的旋转副装配，这类装配普遍采用铰支销外套无油轴承的装配方式，其精度一般为IT6IT7。一种是普通机构的旋转副装配，精度一般为IT8IT10。夹具装配中有部分使用了企业通用制件的（如销轴类零件）可以采用复合选配法来达到规定的装配精度，即零件预先测量分组，装配时再在各对应组中凭工人经验直接选配。6.3.1.3 滑动副装配焊装夹具中包含滑动副装配的机构有移动板（拖板）、顶升装置、移动销等，一般涉及到导轨或导向杆的装配。a). 导轨装配：安装导轨的基准面的平面度应小于0.06/100mm(IT10)，双导轨的安装还要求导轨平行度应达到0.2/1000mm(IT8)。为达到导轨安装的精度要求，应首先安装导轨，安装时先固定导轨中间的位置，再分段测量并调整其安装位置，每测一段即拧紧改测点的安装螺钉；待测量调整完毕以后从中间向两边对称拧紧全部的安装螺钉；最后将导轨滑块移至导轨中间附近，将移动板或承载板安装在导轨滑块上。b). 导向杆导向杆的安装要求一般低于导轨的安装要求。这是由于为尽量缩小导向机构的安装尺寸，导向机构上一般没有可调装置，因此允许导向杆和导向套之间存在一定的间隙，以此来补偿加工误差所带来的安装误差。导向杆和导向套之间的配合公差一般为g7/H8，实际装配时必须留出0.020.05mm的间隙。6.3.2 装配工艺流程通用汽车焊装夹具的装配工艺流程较单一， 一般在生产制造当中直接利用装配工艺流程图来代替工序卡片。如图三所示为某汽车焊装线中单个工位的夹具装配工艺流程示意简图。6.4结束语综上所述，通用汽车焊装夹具的应用可以带来良好的经济效益。a. 换型过渡快、定位准确、夹紧可靠、调整方便。b. 经济性好。多种车型的交替使用，有效提高了工装利用率。节省占地面积，提高了厂房利用率。c. 装配工艺的不断完善和改良，有利于提高夹具精度和汽车车体的焊接质量，提高产品竞争力。消火栓给水系统和自动喷淋给水系统由设在地下二层的消火栓给水泵和自动喷淋给水泵经消防水池到消防给水泵，再向大楼各层消火栓和喷淋管网供水。同时消火栓给水系统和自动喷淋给水系统管网均与屋顶设置的生活、消防共用水箱相连、并通过屋顶设置的消防稳压设备进行稳压。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