Study On The Key Technique For Quasi-Dynamic Dual-Resource Manufacturing Cell Formation

Manufacturing is a pillar industry of the national economic; it is also the important embodiment of national competitiveness. Nowadays, the cellular manufacturing system which is characterized by high efficiency, high flexibility, high quality and low cost has become the main trend in the development of manufacturing industry. Cellular manufacture combines the flexibility of the workshop and the efficiency of the flow process, as well as to product varieties of small batch according to the approximate cost of the rigid flow process, so it can meet the market in the time, quality, cost, flexibility and many other changes. It also represents the advanced production model. Cell formation is the basis of the cell manufacturing. Reasonable construction of the cellular manufacturing form a foundation for the wide application on the modular production of manufacturing system, the process reconstruction of production system and the rapid grouping technique. And it is a core part for the manufacturing system to achieve rapid reorganization.Based on the practical needs of today’s cellular manufacturing system and the present problems which are brought from static and dynamic cell formation (such as the inadequacy of pre-conditions:without considering the actual condition of the original manufacturing system (such as machinery&human resources)), the paper originally proposes a new method which is different from both static and dynamic cell formation:quasi-dynamic cell formation. It uses the recycling formation method to achieve the optimal cell formation schemes for every period. The paper focuses on the study of the theory, methods and techniques of the quasi-dynamic cell formation, establishing a unified mathematical model (abstract function) to describe different types of cell-formation problems. It considers the internal influence of work assignment for multi-skilled employees and workers’learning ability on cell formation. And then human resource factors are introduced into quasi-dynamic cell-formation problem. Finally mathematical model are proposed for the quasi-dynamic dual-resource cell-formation and do the sensitivity analysis to some important parameters and demonstration analysis. This paper study will provide strong and foundamental technical support for recombining a manufacturing system rapidly, executing cellular manufacturing and group technology strategy. It will also promote the ability of manufacturing enterprises in responsing the rapid change of the global market. At the same time, it will contribute crucially to the development of formation theory and technique for cellular manufacturing system.The main work and achievements are as follows:1) Research on the quasi-dynamic cell-formation theory. By analyzing the basic method of static and dynamic cell formation and its pratical application, this paper puts forward basical idea and method of quasi-dynamic cell formation, and then research the connection and distngusich of these three formation method, and at last build a a unified expression method.2) Research on the effect of human factor on cell formation. On the basis of analyzing the influence multi-skilled workers on cellular manufacturing system, this paper puts forward dual-resource constrained cell formation problem and build a corresponding mathematical model and do the sensitivity analsis for the weight coefficient to optimize enterprise resource distribution.3) Research on the quasi-dynamic dual-resource cell formation problem. Based on the concept of qusi-dynamic dual-resource cell-formation, analysis machines cell division, human work assignment and cell layout effect on the cell manufacturing system efficiency, and then put forword quasi-dynamic dual-resource cell-foramtion problem and build a corresponding model, at last research on the solution method for this model and gain the optimal formation scheme.4) Case study. Based on the enterprise survey and data analysis, applied the quasi-dynamci dual-resource cell-formation model into the metalworking shop and changed original mode to cellular production mode, thus greatly reducing the material handling distance, improve production quality level, employee’s work efficiency and efficiency of the entire cellular manufacturing system.