Assembly job shops form an important part of make-to-order companies. These high-variety production environments are generally characterized by high shop loads and tight delivery dates. Coordinating the completion times of parts to guarantee a timely start of the assembly operations is complex. Most prior studies on coordination in assembly job shops mainly focus on priority dispatching rules, thereby neglecting the coordinating potential of order release decisions. While release and dispatching methods have been extensively studied in the literature, they lack the refined dynamic mechanisms that are needed to effectively coordinate assembly parts. This study refines order pool sequencing rules for order release by utilizing progress, urgency and load-related status information for coordination purposes. A new selection mechanism focusing on the timely release of critical parts is embedded in the release decision. Furthermore, a newly developed dynamic dispatching rule carefully coordinates parts to be assembled, once they are released to the shop floor. Simulation results show that the newly developed methods for dynamic coordination significantly outperform their static versions.

装配车间是按订单生产的公司的重要组成部分。这些种类繁多的生产环境通常以高车间负载和紧迫的交货日期为特征。协调零件的完成时间以保证及时开始装配操作是复杂的。大多数先前关于装配车间协调的研究主要集中在优先调度规则上，从而忽略了订单发布决策的协调潜力。虽然在文献中已经对发布和调度方法进行了广泛的研究，但它们缺乏有效协调装配部件所需的精细动态机制。本研究通过利用进度、紧迫性和与负载相关的状态信息进行协调，改进了订单发布的订单池排序规则。发布决策中嵌入了关注关键部件及时发布的新选择机制。此外，新开发的动态调度规则会在将要组装的零件发布到车间后仔细协调它们。仿真结果表明，新开发的动态协调方法明显优于其静态版本。