3.11 Common Pipeline Commander
The overall layout of the pipeline used to guide the design of the pipeline: plan maps to avoid direct contact between pipelines or between pipelines and buildings/structures or to meet specified safety distance requirements.
3.12 Workshop civil engineering materials
3.13 Workshop Common Information
4, the main considerations of process design
a. In the process of welding the car body, it is very important to divide the block reasonably, and the block of the body assembly is basically the same, but the seams at the head are often changed, so it must be carefully analyzed. Blocking determines the number of fixtures and the process flow, which is the first step in process design.
b. Process design can not only be in front of the eyes, it should be combined and developed in a near and far way, so that it can be reasonable in the near future and feasible in the long run.
c. To fully consider the possibility of mixed line production, as flexible as possible in the fixture design task book and process equipment selection.
d. The production method is as lean as possible, minimizing the storage of the products, and the logistics of the large outer cover parts is as short as possible; flexibly arranging the various production lines in the workshop to make the workpiece transfer between the production lines and the connection with other workshops as short and smooth as possible. ,Increase productivity.
e. The layout of the production line should consider the smooth flow of mechanized transportation equipment and water, electricity and gas pipelines.
f. Small parts production should be arranged as much as possible to improve equipment utilization. According to the process flow, the mode of placing small pieces next to the line is not preferable from the perspective of cost saving.
g. The selection of welding tongs is not easy to do. It is relatively low to replace 5% of the welding tongs during the welding production line debugging process. Therefore, the dynamic simulation of the welding process of the three-dimensional welding tongs and the fixture is needed to improve the selection accuracy.
h. Conditional projects suggest the application of digital factory software virtual welding workshop, through the computer simulation, the problems that should not be found in the previous design, were discovered and solved earlier, improve the accuracy of design scheme, drawings and beat balance.
i: The process design cannot be separated from the production management system. The computer system obtains the production information at those stations, and requires the function and interface conditions in the equipment order technical task book.
5, the conclusion
The welding process design involves a wide range of knowledge and is subject to many constraints, such as product series, user concept, process level, quality accuracy requirements, surrounding logistics conditions, investment restrictions, existing plants and plant areas, etc., so process designers are required to see more Knowledgeable. The technical level and automation rate of the production line are not as high as possible, and the investment in the production line is not as low as possible. Under the premise of ensuring product quality, the cost-effective welding production line is the eternal pursuit of process design. With the continuous increase of independent brands in China's auto industry, the welding process design will also be transformed from foreign design to domestic design, and more independent brand welding production lines will be widely used.
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