Production Of Lower Frame On Excavator Based On "One Piece Flow" Mode

As the excavator market competition intensifies, various manufacturers in quality and after-sales service launched fierce competition, and gradually extended to the product manufacturing costs. Frame of the excavator, as one of the five components, occupies an important place in the cost of production and quality. Therefore, this topic has been about how to improve the welding production efficiency, quality of the frames, through a detailed study of the production process, to find out effective methods of quality control and efficiency improvement.This topic through the analysis of the production process of the frames, the frames of the production process time for preliminary analysis, initially formed one piece flow mode. According to one piece flow pattern of demand for site layout, through to the assembly line balance calculation number of work and work time Settings. The results show that to implement a flow pattern from the shelves of production need five station, a compound, four welding and an offline location; The preliminary design takt time of 60 minutes; Personnel 13 people.In the production of one piece flow mode, after the completion of the preliminary calculated according to production plan needs the beat and production location requirements, according to the location of operation time and product quality requirements in terms of personnel allocation. Then carries on the compilation of the shelves standard, through the operation method, operation parameters and walking routes to confirm complete standard operating under the frame of establishment, standard work as a guiding document for production must be strictly observed. Standard work after optimization, the results show that the flow from the shelves of a production needs four station, a compound, three welding and an offline location; Takt time 75 minutes; Personnel 9 people.Through a detailed analysis on the frames of welding production, through process optimization, deformation control measures, make whole frames of the production process more reasonable, greatly reduced the frames after welding deformation, improve the production efficiency. The results show that the deformation is decreased by 45%, balance production rate increased by 20%, reduced the 4 persons, wip inventory fell by 75%.Through implementation of the production mode, frame welding under this can effectively enhance the production efficiency, reduce the inventory; Improve the welding quality from the frames. Therefore, this topic achieved the tasks and goals.