Control of manufacturing systems Slovak University of Technology Faculty of Material Science and Technology in Trnava

Manufacturing System A Manufacturing System can be defined as the means to operate and control processes that add value to a product. Manufacturing System is its ability to replicate the product profitably.

Basic subsystems Skupiny pracovísk Groups of workstations Transport system Storage system Groups of workstations

Manufacturing Process Layout L L L L L L L L L LM M M M D D D D D D D D G G G G G G P P AAA Receiving and Shipping Assembly Painting Department Lathe Department Milling Department Drilling Department Grinding Department

Analytical process SiSi V j-1 VjVj V j+1 e.g. chemical-physical analyzea Syntetical process VjVj S i-1 SiSi S i+1 e.g. Assembly process Materially neutral process SiSi VjVj e.g. rolling S i = inputs V j = outputs The structure of production process according to material flow Analytical-syntetical process S i-1 SiSi S i+1 e.g. open production V j-1 VjVj V j+1

Flexible manufacturing system A system that consists of numerous programmable machine tools connected by an automated material handling system A flexible manufacturing system (FMS) is a manufacturing system in which there is some amount of flexibility that allows the system to react in the case of changes, whether predicted or unpredicted. This flexibility is generally considered to fall into two categories, which both contain numerous subcategories.

Flexibility The first category, machine flexibility, covers the system's ability to be changed to produce new product types, and ability to change the order of operations executed on a part. The second category is called routing flexibility, which consists of the ability to use multiple machines to perform the same operation on a part, as well as the system's ability to absorb large-scale changes, such as in volume, capacity, or capability.

FMS Most FMS systems comprise of three main systems. The work machines which are often automated CNC machines are connected by a material handling system to optimize parts flow and the central control computer which controls material movements and machine flow.

FMS Parts Finished goods LoadUnload Computer control room Terminal Machine Tools Conveyor Pallet