Discrete Production System Difficulties Different type of products needs different production process, needs different layout of equipments>Product change,layout changes The production proportion of different type of products often changes workforce organizing,equipments arranging production scheduling are very difficult and needs to adjust continuously. The requirement of production capacity is dynamic,the load- balance and the synchronization of production process are very difficult but necessary. Annual plan for production is usually inaccurate,however,the short plans such as monthly and weekly plans are the keys
Difficulties Different type of products needs different production process, needs different layout of equipments>Product change, layout changes The production proportion of different type of products often changes > workforce organizing, equipments arranging , production scheduling are very difficult and needs to adjust continuously. The requirement of production capacity is dynamic, the loadbalance and the synchronization of production process are very difficult but necessary. Annual plan for production is usually inaccurate, however, the short plans such as monthly and weekly plans are the keys. Discrete Production System
熟 Difference between Continuous Flow and Discrete Production Primary characteristic Continuous flow Discrete Customer number few many Product sorts few many Product standardization high low Customization low high Demand steady change
Difference between Continuous Flow and Discrete Production Primary characteristic Continuous flow Discrete Customer number Product sorts Product standardization Customization Demand few few high low steady many many low high change
Difference in the Facility and Manufacturing Aspects Primary characteristic Continuous flow Discrete Key production elements High dense Capital high dense workforce Automatisation level high comparatively low logistic continuous low discontinuous facility failure great effect effect equipment maintenance high requirement low the types of material fewer many WIP (Work in Process) low low high product inventory high low output flexibility low high product structure flexibility low high operation information collecting easy difficulty
Difference in the Facility and Manufacturing Aspects Primary characteristic Continuous flow Discrete Key production elements Automatisation level logistic facility failure equipment maintenance the types of material WIP (Work in Process) product inventory output flexibility product structure flexibility operation information collecting High dense Capital high continuous great effect high requirement fewer low high low low easy high dense workforce comparatively low low discontinuous effect low many low high low high high difficulty
⑧ Discrete Production System Discrete production systems ·Mass production Multi-products and low volume production One of a kind production Mass customization
Discrete Production System Discrete production systems • Mass production • Multi-products and low volume production • One of a kind production • Mass customization
Mass Production Only one or a few types of products are produced repeatedly in a long period. e.g.watches,bicycles,TV,refrigerator,DVD, screw High productivity:workers are designated to a work with high specialization,and also equipments and process are high specialized. Skilled workers:workers repeat the same operations Characteristics Simple production planning and scheduling:once a production line is set up properly,it will keep going on same rhythm. The products quality is easy to be guaranteed. ·Low production cost.. Management emphasis:facility maintenance;worker management;and quality management
Mass Production Only one or a few types of products are produced repeatedly in a long period. e.g. watches, bicycles, TV, refrigerator, DVD, screw • High productivity：workers are designated to a work with high specialization，and also equipments and process are high specialized. • Skilled workers: workers repeat the same operations • Simple production planning and scheduling : once a production line is set up properly, it will keep going on same rhythm. • The products quality is easy to be guaranteed. • Low production cost. Characteristics Management emphasis: facility maintenance; worker management; and quality management