As one of the four major processes, the plane layout of the production line is of great significance to the safety and quality of the future production.
Composition of body welding production line
Body welding production line is the general term of all forming stations of BIW. It is composed of body assembly line and many sub-assembly lines. Each assembly line or sub-assembly line is composed of many welding stations. Each station is composed of many positioning and clamping fixtures and automatic welding devices. The transfer of loading and unloading and parts is realized through electric hoist, robot and other conveying equipment between lines and stations, so as to ensure the continuity of work in each station in the production line.
The body welding production line includes: adjustment and grinding line, main welding line, lower line, floor assembly line, side wall assembly line, door cover line and cabin line.
Plane layout of welding production line
1. Feasibility analysis of the layout of the welding production line (including the factory building)
According to the new model capacity planning and new model product data, determine the process route and production site, through the status of tooling equipment for short-term and long-term production feasibility analysis.
2. Plane layout of welding production line-steel structure
According to the product data and the process division of the body planning technology department, the process diagram list is worked out.
(1) Confirm the corresponding fixture list and size through the process diagram;
(2) Confirm the corresponding equipment list and size through the operation diagram and fixture list;
(3) Through the equipment list and fixture list to arrange, confirm the location and quantity requirements of relevant power, water, steam and compressed air and other energy facilities;
(4) Confirm the shape (length, height and width) of the on-site steel structure through the equipment list, fixture list, power, water, steam, compressed air and other energy facilities and safety passages, and complete the overall on-site layout.
3. Layout of the production line-layout between processes
According to the operation drawing, fixture and equipment list, make the arrangement between the processes. The formulation principles are as follows:
(1) Through the relationship between the upper and lower processes, the mainstream adopts the principle of proximity, according to local conditions.
(2) Through the measurement of working hours, the stations in the area with less working hours, no influence on the overall operation, no influence on the beat and less route transfer shall be concentrated as much as possible, and the relevant personnel shall operate under reasonable beat.
(3) Confirm the special station equipment of the fixture and the integrated station equipment through the process diagram, and confirm the position of the station equipment through the size of the parts and the way the employees take the parts.
(4) Through the measurement of working hours in working stations, the principle of proximity is adopted, and "0" inventory is implemented for working stations with little difference between upper and lower order.
(5) Between station processes, when the transfer route has to be relatively long due to pros and cons analysis, the online inventory mode is adopted to make up for it according to the working hours.
(6) If there is congestion between processes, it is recommended to disassemble the process steps or disassemble the process to make up for it, reduce the small parts that do not affect the accuracy of the station, move to the next process for welding, and reduce the corresponding station equipment; The sliding mechanism is used to pre-assemble and then slide to the welding station for welding, thus eliminating the interference between the welding tongs and other facilities.
4. Layout of the production line-logistics transfer layout
(1) through the actual field measurement and the weight of parts, size, determine the logistics transfer mode between processes.
(2) through the actual field practice, the importance of surface quality and the quality of parts, size to determine the logistics transfer between processes.
(3) Logistics channel planning, welding logistics channel requirements for 3m. The arrangement of welding logistics is an important link in the arrangement of welding production line. Whether a vehicle type runs smoothly in the later production is very critical to the planning and arrangement of welding logistics. It is necessary to calculate the logistics volume of each channel and see the size of the logistics volume when running at full load. The layout of the logistics of the welding workshop also reflects the level of the welding production line from the side.
The success of automobile welding plane layout has laid a good foundation for automobile manufacturing in the future. With the rapid development of the automobile industry, various automobile manufacturers have higher and higher requirements for the plane layout of welding assembly, and they are becoming more and more demanding. In addition to designing the layout in accordance with the principles, specific problems need to be treated concretely.
Body, process, station, pass, production line, layout, list, logistics, fixture, carry out
