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Design And Implementation Of Manufacturing Execution System (MES) Project For NC Production Line In The Enterprise

Posted on:2010-11-04Degree:MasterType:Thesis
Country:ChinaCandidate:Z Y BiFull Text:PDF
GTID:2178360272997670Subject:Project management
Abstract/Summary:PDF Full Text Request
Aerospace manufacturing is the high-tech industry, Request to be strictly to the product quality and precisely machined with high accuracy, it is one of the user NC Machines. NC Production Line is the biggest factory in the enterprise of aero engine. Be responsible for about one thousand components productions of company to process a task. Along with the application of new equipments, the factory has blossomed into a NC production line with many NC machines. This has a bigger function to the exaltation of production abilityBut compared with international advanced level, it still exists difference. First NC Machines Operating Ratio, efficiency and labor productivity are much lower than some developed Western countries. The main cause is Management, for example, many administrative levels, extensive management, rule of man, subjective, great spontaneity etc. It spend more time in prepare than in produce. Secondly, the basic industries are weak , material and assembly is not match, production was held up. The existing shortages in the information construction of enterprises limited the exertion of information benefit.For betterly develop a production line to process manufacturing ability, Use management software, Optimize the allocation of internal and external resources, The operation and management of enterprise to be standardized, scientized and systematized, Carry on manufacturing and information-based management the number turn an integration and carry out establishment Jing benefit to make a production line.Attaining to lift thus is high-efficiency and decline a low cost purpose and has become the aviation manufacturing business enterprise inevitable choice.Consequently put forward construction production line manufacturing to carry out system MES, satisfy business development need.The paper first analyses NC production line of the enterprise control the production present condition of processing , and makes use of an existing resources and carries on extensively thorough investigation and need analysis to the spot production control activity, and combine the completion manufacturing performance system of the aviation manufacturing industry characteristics design.Factor Plan Management, This is to adapt to Chinese aviation and the soldier work large business enterprise to widespreadly adopt at present of production organization structure of the demand but constitution of constitution of, divide a factory layer the structure bring a lot of standard MESs model processing not of problem, need to have a specialized plan management with it went with should;Production Operation Management, the core of the MES, use to control to harmoniously adjust plan order between each car on the scene of carry out process, is all plans that make use of original material, energy and information to carry on production, be in conjunction with, gathering of in command of and on the trail of etc. activity.This item adoption need pulls a dynamic mode of production and takes push type plan management as a main mode of production;Quality Operation Management, The scope included quality diagraph and for promise in the center all management activities of the product and end product quality.Aviation and soldier work profession all relevant quality lawses obey sexual of carry out an activity, all belong to MES the scope of quality homework management;Tool Operation Management, Producing section assurance production can be packed acquiring of tool, preservation, maintained with sex and the work that stability carries on, prevention check, use, go together with to send etc. the activity, and support gathering of the management activity of plan, resources and information and result of tool homework activity.The tool homework manages to still include the history that the work packs breakdown to carry on a record.With the work pack a set debt for foundation but don't involve work to pack, the application of tool, instrument gauge, buy, other managements of property and whole life cycleses. Maintain Operation Management, producing section assurance production can be used sex and stability the equipments carried on support an activity, and support maintains gathering of the management activity of plan, resources and information and result of activity.Maintain an activity to include periodic of or prevention maintenance and burst break down to the equipments of respond to.In order to carry on the diagnosis of equipments breakdown, supporting a homework to manage should there is also the history to pass by affairs or breakdown carrying on a record.Inventory Operation Management, Stock homework management for make factory to provide a terrace of high-efficiency operation.Can support a fixed database 2 kinds of management styles is with vivid database.BE handling the stock discrepancy dish database etc. business processing, provide management stock in the meantime the means of the quality, such as stock ABC classification, stock early warning, stock analysis.It with production system integration, integrate with quality system, stock thing processing process record material of the quality serial number or batch is a whole distance the quality follows of important link.Exchange with DNC information, produce phase zero, when MES makes to use sex to check provide the spare parts, work ordinal number and equipments the ID number to the DNC system.The DNC system provides the number of stock(existing) to control procedure(spare parts number, equipments, work ordinal number and edition number) whether existence and can use.MES provides demanding procedure to DNC, starts making an equipments to adjust to try after completing the parties work row preface and making sure to process order of sequence.The DNC system should record to start time at this time;The MES work preface progress records to go into formal opening signal to, DNC system follow collect number control tool machine all movable datas, will collect a data to deliver to MES, MES makes solid can see to turn supervision, and carry on a statistics analysis.The spot supervision personnel can pass computer screen or computer terminal and immediately and synchronously control the operation circumstance of the whole spot tool machine equipments, and related production process data;While surprised condition happening in the production line on the scene, the DNC system sends out a warning to MES and notifies the spot to supervise and control personnel or related decision unit and adopt urgent processing measure.The knife has ID number and attribute, the knife has a surplus usage to shut down for time with breakdown to show a production period, adjust time, shut down time and breakdown to shut down time and physically process time to statistics.With the implementation of the project, Factory can realize effective production plan of factory and workshop, and products seedtime can be shortened and direct production. The foundation that integrate completely in the information up, passing the production can be checked with sex, the appurtenance anticipates, craft, tool work's packing is as various as equipments and promised a production plan of can carry out sex;Carry out the whole value flowses each work preface of the data collect, the progress circumstance can carry out to see to turn a search and pass according to rule of the calculator assistance send work, raised the rationality and convenience of the spot parties work, solved originally because the spot that"the production knocks down" results in carries out confusion problem;The result that the data collects passes a clear work preface progress, in the product appearance, send a work appearance, worker opening completion of work appearance of the diagram show to turn supervision, the realization produces a circumstance information to see to turn, transparency, the data is accurate to believe;Under the instruction of the system, solved to there is a semi-finished product throwing in and a work preface have several batches to wait for processed of confusion phenomenon, basic realization have preface devotion, have a preface and quickly flow to turn;The tool work packed a management to carry out tool work to pack a set debt management;Can born periodical check plan;Packing to borrow to the work still management and work to pack can be searched with the appearance;The realization examination information collects;The unqualified article processing information collects;The quality that presses the batch in proper order number follows and traces back to the quality information of whole processeses to the stove batch number, batch;Can produce a quality statistics in the meantime statement;Carried out establishment, alteration and management of equipments set debt;The report fixs and maintains to respond to a management;Define an equipments to maintain, the check fix of time period, the automatically born equipments maintains a plan;Collect the data of maintaining the result.With the design and implementation of the project, built up a framework of aerospace manufacturing MES. To prepare for implementation of MES Project to other factory, and conquer a solid foundation for the extension of the MES.
Keywords/Search Tags:MES, Aerospace manufacturing, NC process
PDF Full Text Request
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