【正文】 mbedment parts of the laminated riveting, welding technology, 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)（論文） 30 realize low homework, shorten production cycle, improve work efficiency and ensure quality of assembly. 7 and the door frame after assembly, assembly, passenger door skeleton storehouse, the wheels arc doors skeleton assembly skeleton assemblies, skirt side of skinned pound, buries the skeleton assembly quality requirements in terms of product design, the FRP pieces supporting enterprise pleted. 9 installation welding soot discharge system: coach welding soot produce numerous assignments will be issued, air pollution is severe, in order to guarantee the healthy and civilized production workers, requires production space clean, installation ventilation dust removal equipment, improve the working environment. pactions workshop equipped with assembly sling, cranes, ensure the normal production ponents assemblies. body line welding process design and quality assurance According to the overall process layout planning capacity, II type layout, the welding workshop for body line welding process design, mainly body assemblies and outfit, key working procedure and body assemblies and three kinds of welding process of chassis design, reasonable layout production process, use domestic advanced technology and equipment, in order to achieve high efficiency, stable flow operation mode. According to the structure characteristics of the products, welding equipment adopts CO2 shielded welding, all kinds of work medium such as carbon dioxide gas, pressed air GuanDaoHua centralized supply all realize. Specific plan is as follows: A. the production line adopts ground track artificially push production mode. According to the target capacity requirements can be more than the same set production line and process equipment, production line DingGang basing, realize flow operation to achieve high quality bus production capacity. B. production process. Set up a production preparation workstation, responsible and install the preparing work before. The technological process is: skeleton assembly prepare workstation a body assemblies and outfit floor skeleton weldinginstallation skinned leftright side cover drawing, welding 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)（論文） 31 skinned assembly welding passenger area is welded nickelbased sealed cover, the driving area lateral seal welded lateral warehouse door, round skinned body and installation of arc three chassis buckle close luggage storehouse skeleton welding luggage storehouse seal welded weld burnish, make gum part of chassis a installation nap, especially by electric car translation into coating workshop. C. body close pack adopts hydraulic drive stereo fold device. Body and outfit craft is body manufacturing process the essential process, is weldinginstallation production line, the first step in the process of its close outfit effect directly affect the quality of the vehicle. Control and outfit craft is control vehicle body manufacturing quality key steps. Therefore, using this equipment can improve stability of quality body manufacturing, improve the production efficiency, and achieving specialization, largescale production. Fold the positioning device 3d clamping device, easy adjustable varieties bus production requirement. D. left/right tension adopt fission style side skinned skinned hydraulic tensile equipment. Adopt open decorate, namely tensile institution in the body, the front/rear end pletely opened central, can make workers under the condition of the disabled, guarantee body side welding operation smoothness, also facilitate decorate welding tools. It is applicable for various models, all kinds of process conditions for the production, realizing resistive spot welding skinned side have created favorable conditions (resistive welding process domestic immature). E. the cover by skinned assembly welding low work processes. Due to the higher, homework bus body position is relatively high, operation convenience, product quality assurance, production line not big workload, so will the high weldinginstallation skinned moved ground weldinginstallation homework, the top finish rolling welding equipment skinned resistance top new welding skinned low. This device can cover three zhang molded to the rigging, through the positioning, stretching and resistance, forming a top rolling welding 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)（論文） 32 skinned assembly. The welding deformation small, surface smooth, not leak, productivity is high, can pletely solve the actual problem cover leak. Due to the top of the difficult skinned assembly, its operation transport venue layout in production line, convenient use. Flanks F. skinned assembly and ceiling cover can be used in the welding skeleton assembly process performance is good, welding quality high automatic welding low homework production mode. G. using body assemblies and three chassis in welding line fits buckled in the process, realize rapid and stable transportation mode, solve body assemblies in longdistance conveying process distortion problem, the conjunction of quality guarantee plete car, avoid fits the car appear more after the preface secondary damage. H. line close to the next station install location button and using cranes and body workstation place and vehicle sling auxiliary equipment, realize the hoisting the vehicle. I. line fits the body each station buckle before using welding specialized technique revolving cars, buckles and body for coating workshop when gm39。s redtipped car, flexible and convenient process flow. J. production line adopts full chamber ventilation dust removal device. For production line the use of CO2 welders, production assignments produce a lot of smoke, in order to guarantee the healthy and civilized production workers, requires production