Improvement On Production Processes Of Display And Control Panels

XX Company is a subsidiary company of an aviation group directly owned by the country. To meet the developing requirement of the defense industry, the company has introduced and implemented lean production. She requires all production shops to eliminate waste, improve production efficiency and reduce production cost.This paper researches on the production processes of display and control panels, collects data of the current production situation of shops, draws the current value stream maps, and recognizes waste in current processes by using value stream analyzing technique, based on which the future value stream mapping are carried out. By means of industry engineering and lean production tools, this paper analyzes the production processes of display and control panels, makes and carries out a lean improvement proposal. First, improvement on processes and flows of display and control panels is described, which is to use ESCR principle and 5W2H technique to eliminate unnecessary activities, so that the total operation time can reduce by 70% and the total path can be shortened to 37% of the original. Second, the flows in shops are analyzed and layouts are improved by changing the original solid transportation among the first and fourth floors into one floor horizontal transportation. This measure makes all production links more tight, logistics distance greatly reduced and production area reduced by 44.6%. At the same time, by employing work measurement method on bottleneck process assembly line to calculate standard working time of each process, and afterwards carrying out balance improvement, the balance rate in assembly line increases to 86.4% from the original 55.17%, and production capacity increases by 70.8%. Last, the whole production line applies the Kanban Pull System and generally realizes"One Flow"production pattern.By carrying out lean process improvement activities, the lead time LT of display and control panels reduces by 73.57%, and machining efficiency PCE increases by 209.5%, which is a good start of the company's sustainable improvement and also plays a directive role for other subsidiaries under the group on lean improvement.