Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/1602
Title: Pure cycles in two-machine dual-gripper robotic cells
Authors: Gültekin, Hakan
Dalgıç, Özden Onur
Aktürk, M. Selim
19313
Keywords: Robotic cell scheduling
Pure cycle
Dual-gripper robot
Throughput maximization
Issue Date: Dec-2017
Publisher: Pergamon-Elsevier Science Ltd
Source: Gultekin, H., Dalgıç, Ö. O., & Akturk, M. S. (2017). Pure cycles in two-machine dual-gripper robotic cells. Robotics and Computer-Integrated Manufacturing, 48, 121-131.
Abstract: We consider a robotic cell served by a dual-gripper robot that consists of identical CNC machines placed linearly and a material handling robot loading/unloading the machines and transporting the parts between them. Identical parts are to be processed in this system and the CNC machines are capable of performing all the operations that a part requires. We consider the problem of sequencing activities of the robot in order to maximize the throughput rate. As a consequence of the flexibility of the CNC machines, a new class of robot move sequences, named as pure cycles, arises. In a pure cycle, the robot loads and unloads each machine once and each part is processed on exactly one of the machines. Thereby, the problem is to determine the best pure cycle that maximizes the throughput rate. We first determine the feasibility conditions for the pure cycles and prove some basic results that reduces the number of feasible pure cycles to be investigated. We analyze 2-machine robotic cells in detail and prove that five of the cycles among a huge number of feasible pure cycles dominate the rest. We determine the parameter regions in which each of the five cycles is optimal. We also analyze the performance improvement that can be attained by using a dual gripper robot and provide managerial insights.
URI: https://doi.org/10.1016/j.rcim.2017.03.004
https://hdl.handle.net/20.500.11851/1602
ISSN: 0736-5845
Appears in Collections:Endüstri Mühendisliği Bölümü / Department of Industrial Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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