Abstract: Focusing on the requirement of multi-part scalable batch production, a layout reconfiguration planning technology of manufacturing systems considering system reusability and task recurrence is proposed to reduce system reconfiguration cost. The estimation indexes to measure system and task recurrence are established based on detailed analysis. According to some constraints including task precedence, uniqueness, machining function and capability, maximum idle time and workshop space, a layout reconfiguration model and a GA-based algorithm for multi-part scalable batch production mode are built while choosing the linear combination of additional investment, reconfiguration cost, idle time, task recurrence, system reusability as its objective function. A diesel engine cylinder head machining line is taken as an example to validate the proposed technology. The results show that the integrated layout reconfiguration technology actualizes the reusability and economy of reconfiguration process and fulfills the requirements of production functions and capabilities for manufacturing systems.

Key words: layout reconfiguration, system reusability, task recurrence, manufacturing systems