Research And Development On Job-shop Scheduling And Controlling System Applied To Discrete Manufacturing Enterprise

Nowdays information technology provides manufacturing with enormous tech support. "Job-shop scheduling and controlling" is the key and nuclear technology of QMS and MES, which not only has important status in the course of information development, but also is the difficulty and feeble techs of it.According to the present level of information in manufacturing of our country, the paper which is combined with actual production of job-shop of Shenyang Heavy Machinery Group Co., Ltd analyzes the status of production scheduling and management, including the layout and performance of equipment, the type of production, the mode of production scheduling and management, etc... The problems which lie in the current scheduling and management of production of their corporation are presented.On the base of analyzing the status of scheduling production, the paper regards the main workpieces that include mechanical press, metal rolling equipment, metal extrusion production line and so on as the research object, in which the scheduling method that how to shorten the processing cycle and reduce the amount of WIP and realize the balanced production is discussed. The Algorithms that are suitable to job-shop scheduling are discoursed at large.As sum up, the prototype of job-shop scheduling and controlling system is developed and the designation is completed by means of VB 6.0.The system which makes use of visual interface automatically comes into being the scheduling and controlling and may print the dispatch list which directs the production to deliver to the on-site worker. What's more, all kinds of disturbances in the course of production progress and actual data of man-hour feed back to scheduler by means of field data collection, which forms the controlling of loop.The system which is comparable to the manual work of production scheduling may increase the efficiency of scheduling, make the solution more optimal and improve theproductivity of enterprise. Thus, it makes enterprise attain the lower cost, boost the economic benefit and relieve the scheduler from the heavy manual work.