An FMS can be defined as a manufacturing technology designed to produce a variety of parts in medium-sized volumes while utilizing the flexibility of a shop floor manufacturing model. Although the term FMS has been widely studied, there is no globally accepted definition of a flexible manufacturing system and numerous definitions have been reported. The most cited definition is: "an FMS can be defined as a manufacturing system dealing with a high level of distributed data processing and automated material flow, equipped with computer-controlled machine tools, automated material handling and storage systems materials, automated/semi-automated assembly cells, industrial robots and AGVs, automated inspection systems and so on.[1]An FMS can also be defined as[3] a "highly automated cellular manufacturing system designed based on group, comprising a group of processing workstations such as NC/CNC machine tools, entirely interconnected by an automated material handling and storage system and completely controlled by a distributed IT system".1.2 FMS components: the key components that make up an FMS are: (i) potentially independent CNC/NC machine tools (ii) an automated material handling and storage system. An integrated computer control system to control the whole functions of the FMS, such as machine tool control, material handling system control, inspection system so as to achieve flexibility. The above-mentioned FMS components can be divided into two categories: Primary and Secondary. The main components include CNC/NC machine tools, material handling and storage system and a supervisory computer control network. Subcomponents include machine tool processing technology, labor… half of the paper… the desired production volume. Klahorst [5]• When the processing of each part requires more than two machines to convert it into a finished product.• ​​When the production volume exceeds two parts per hour.• The production system is process-driven producing a variety of parts in batch mode .• Parts can be grouped together to form families of parts.• When implementation is planned in phases so that material handling arrangements can be incorporated early on.1.7 FMS Applications:• Pontiac Division of GM, Saturn Plant and Locomotive Plant, Erie, Pennsylvania.• Hughes Aircraft Plant, EI Segundo, California• Vought Aerospace Plant, USA• Ford Sterling Heights Transmission and Frame Axle Plant• Manufacturing and machining processes such as: machining and press forging, sheet metal fabrication, milling and drilling operations and line assembly.