Robotlu esnek üretim hücrelerinde çizelgeleme

The focus of this thesis is the scheduling problems arising in roboticcells which consist of a number of machines and a material handling robot.The machines used in such systems for metal cutting industries are highlyflexible CNC machines. Although flexibility is the key term that affectsthe performance of these systems, the current literature ignores this. As aconsequence, the problems considered in the current literature are either toolimiting or the provided solutions are suboptimal for the flexible systems. Thisthesis analyzes different robotic cell configurations with different sources offlexibility. This study is the first one to consider operation allocation problemsand controllable processing times as well as some design problems and bicriteriamodels in the context of robotic cell scheduling. Also, a new class of robotmove cycles is defined, which is overlooked in the existing literature. Optimalsolutions are provided for solvable cases, whereas complexity analyses andefficient heuristic algorithms are provided for the remaining problems.Key words: Robotic cell scheduling, Flexible manufacturing cells, CNC,Controllable processing times, Bicriteria schedulingiv