Assembly system design and operations for product variety

Hu, S. Jack; Ko, Jeonghan; Weyand, Lars; ElMaraghy, Hoda A.; Lien, Terje K.; Koren, Yoram; Bley, Helmut; Chryssolouris, George; Nasr, Nabil; Shpitalni, M.

doi:10.1016/j.cirp.2011.05.004

Cited by 446 publications

(236 citation statements)

References 141 publications

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“…The design topics of an RAS also include modelling systems that couple complex interaction among different machines, line balancing, and production scheduling, etc. [107]. In addition, new metrics are needed to quantitatively measure the complexity of the system configuration and the products.…”

Section: From Mass Customization To Mass Individualizationmentioning

confidence: 99%

Reconfigurable manufacturing systems: Principles, design, and future trends

2017

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Reconfigurable manufacturing systems (RMSs), which possess the advantages of both dedicated serial lines and flexible manufacturing systems, were introduced in the mid-1990s to address the challenges initiated by globalization. The principal goal of an RMS is to enhance the responsiveness of manufacturing systems to unforeseen changes in product demand. RMSs are costeffective because they boost productivity, and increase the lifetime of the manufacturing system. Because of the many streams in which a product may be produced on an RMS, maintaining product precision in an RMS is a challenge. But the experience with RMS in the last 20 years indicates that product quality can be definitely maintained by inserting in-line inspection stations. In this paper, we formulate the design and operational principles for RMSs, and provide a state-of-the-art review of the design and operations methodologies of RMSs according to these principles. Finally, we propose future research directions, and deliberate on how recent intelligent manufacturing technologies may advance the design and operations of RMSs.

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Section: From Mass Customization To Mass Individualizationmentioning

confidence: 99%

Reconfigurable manufacturing systems: Principles, design, and future trends

2017

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“…The growth of mobility and mobile apps is highly influenced by the growth and the adoption of the cloud technology in manufacturing [28]. Cloud technology acts as an enabler to adopt mobile devices in manufacturing not only for the provision of applications but also for production data management purposes [29]. However, the adoption of apps focused on core manufacturing processes was up to now limited [25].…”

Section: State Of the Artmentioning

confidence: 99%

A mobile application for knowledge-enriched short-term scheduling of complex products

2016

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The ever-increasing product complexity, especially for the case of engineer-to-order products, highly affects the performance of manufacturing systems. Therefore, a high degree of flexibility is needed during daily decision-making activities, such as production scheduling. For addressing this challenge, this research work proposes a knowledge-enriched short-term job-shop scheduling mechanism, which is implemented into a mobile application. More precisely, it focuses on the short-term scheduling of the resources of the machine shop, through an intelligent algorithm that generates and evaluates alternative assignments of resources to tasks. Based on the requirements of a new order, a similarity mechanism retrieves successfully executed past orders together with a dataset that includes the processing times, the job and task sequence, and the suitable resources. In addition to that, the similarity mechanism is used to calculate the due-date assignments of the orders based on the knowledge stored in past cases. Afterwards, it adapts these parameters to the requirements of the new order so as to evaluate the alternative schedules and identify a good alternative in a timely manner. The deriving schedule can be presented on mobile devices, and it can be manipulated by the planner on-thefly respecting tasks precedence constraints and machine availability. A case study from the mould-making industry is used for validating the proposed method and application.

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“…More specifically, in assembly planning a number of various aspects such as product structure and variety [1], assembly technology, fixturing and tooling [2], part stability [3], handling of rigid and elastic parts [4], tolerances and quality, path of movements [5], capabilities and skills of workers, ergonomics [6], as well as costs and setup times [1] have to be considered and consolidated. While engineering tradition and common sense suggests that there could be no single model for incorporating all the above issues, some general principles apply well: (i) Hierarchical decomposition elevates sequencing and resource assignment decisions to the level of macro planning and refers the handling of other details to micro planning [7] [8].…”

Section: Introductionmentioning

confidence: 99%

“…In the application of the generic approach to assembly process planning, there is a set of assembly tasks (and potentially some auxiliary tasks) that must be sequenced and assigned to resources [1][9] [10]. The detailed technological content of assembly task t is specified by the assembly feature : , , , ,…”

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confidence: 99%

Decomposition approach to optimal feature-based assembly planning

2017

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The paper proposes a generic approach to assembly planning where individual tasks, with detailed technological content specified by features, must be combined into an optimal assembly plan subject to technological and geometric constraints. To cope with the complexity and variety of the constraints that refer to the overall assembly process, Benders decomposition is applied. The macro-level master problem looks for the optimal sequencing and resource assignment of the tasks, while sub-problem modules ensure plan feasibility on the micro-level from aspects of technology, fixturing, tooling, and collision. Constraints are also dynamically generated for the master problem. The approach is demonstrated in automotive assembly.

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Assembly system design and operations for product variety

Cited by 446 publications

References 141 publications

Reconfigurable manufacturing systems: Principles, design, and future trends

Reconfigurable manufacturing systems: Principles, design, and future trends

A mobile application for knowledge-enriched short-term scheduling of complex products

Decomposition approach to optimal feature-based assembly planning

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