Cyclic scheduling in small-scale robotic cells served by a multi-function robot

Foumani, Mehdi; Ibrahim, M. Yousef; Gunawan, Indra

doi:10.1109/iecon.2013.6699837

Cited by 3 publications

(2 citation statements)

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“…In fact, after loading a part on a machine, MFR either stays on this machine until the end of the operation or moves to the next machine to remove a part [22]. The MFRC scheduling is expressed extending the notations and definitions below from [4]: We know two cases may occur when MFR performs activity A i : 1) γ i ≤δ: this means MFR finishes the operation before arriving at M i+1 . Therefore, it loads the part to M i+1 as These permutations are referred to as one-unit since each A i occurs once.…”

Section: Problem Notation and Definitionsmentioning

confidence: 99%

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Notes on Feasibility and Optimality Conditions of Small-Scale Multifunction Robotic Cell Scheduling Problems With Pickup Restrictions

Foumani

Gunawan

Smith‐Miles

et al. 2015

IEEE Trans. Ind. Inf.

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 Abstract-Optimization of robotic workcells is a growing concern in automated manufacturing systems. This study develops a methodology to maximize the production rate of a multi-function robot (MFR) operating within a rotationally arranged robotic cell. A MFR is able to perform additional special operations while in transit between transferring parts from adjacent processing stages. Considering the free-pick up scenario, the cycle time formulas are initially developed for small-scale cells where a MFR interacts with either two or three machines. A methodology for finding the optimality regions of all possible permutations is presented. The results are then extended to the no-wait pick up scenario in which all parts must be processed from the input hopper to the output hopper, without any interruption either on or between machines. This analysis enables insightful evaluation of the productivity improvements of MFRs in real-life robotized workcells.

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Section: Problem Notation and Definitionsmentioning

confidence: 99%

“…1 shows an example of these grippers used for measuring the diameter of a crankshaft [3]. The measuring heads are integrated into the automation by adding gages and crankshaft locating features to MFRs [4]. Here, we present a detailed study regarding GGG grippers.…”

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confidence: 99%