Research On Aircraft Engine Production Line Optimization

With the vigorous development of the general aviation，the demand for aircraftengine gradually increased. But the backward aircraft engine production line indomestic is unable to meet the increasing social demand. In this paper, according tothe production characteristics of aviation engine, it took aviation piston engineproduction line of A company as the research object, and designed a series ofimprovement projects. First of all, based on the machining characteristic of aeroengine, aviation engine production line was divided into two parts: machining lineand assembly line. Then, according to the intrinsic characteristics of the twoproduction lines, and combining with the on line optimization related technology athome and abroad, production line was optimized and improved. The research contentsmainly include:(1)The paper introduced the general situation of A corporation as well as itsproduction status. By using relevant technologies of facilities, the facility layout ofmechanical processing workshop was analyzed, and on the basis of it, then the mainproblems of mechanical processing production line was summarize. According to theassembly line, the paper used work measurement method to measure operation time ofeach process in the assembly line of air piston engine. Then, the defects in theassembly line was analyzed by using related knowledge of production line balancingrate.(2) Point at the problems in machining production line of aviation piston engine,the original production line was divided into three production units through the directclustering algorithm. According to relevant technology of facilities layout in unitproduction line, the facility layout of each production unit was designed. On the basisof process characteristics of products in each production unit, the paper planed theposition of each production unit in the mechanical processing workshop, and drew themap of facility layout in mechanical processing workshop.(3)Aiming at the shortcomings of assembly line, the bottleneck process of theassembly line was eliminated by using the method of work study. On the basis of workmeasurement in assembly line, the paper redistributed the production location inassembly line through the heuristic algorithm. Then the paper analyzed the balancerate in assembly line after distribution by relevant technology of production linebalance. Finally, by using the em-plant, the optimized assembly line was simulated and verified.(4)In order to maintain the improved production line in aircraft piston engine, thepaper proposed the auxiliary infrastructure solutions from four aspects: strengthenedthe enterprise staff training, trained versatile worker; established the standardoperating system and standard production; implemented6S management and visualmanagement, improved the production environment; setup the lean for ward depart-ment, promoted the continuous improvement of the production line in aircraft piston.Through the transformation of cell production on parts machining productionline, the utilization rate of equipment and personnel was improved, the time oftransport routes and handling was reduced, and to some extent the processing cycletime of components was reduced. By using the method of work study and heuristicalgorithms, the bottleneck process in the assembly line was eliminated, the balancingrate in assembly line was improved, and the utilization rate of the each station inassembly line and the productivity of the whole line were also improved. Finally, theauxiliary infrastructure maintained continuous and efficient operation for theimproved production line.