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Article
Publication date: 18 October 2011

Yong Liu and Ning Xi

The industrial robot has high repeatability but low accuracy. With the industrial robot being widely used in complicated tasks, e.g. arc welding, offline programming and…

Abstract

Purpose

The industrial robot has high repeatability but low accuracy. With the industrial robot being widely used in complicated tasks, e.g. arc welding, offline programming and surgery, accuracy of the robot is more and more important. Robot calibration is an efficient way to improve the accuracy. Previous methods such as using coordinate measurement machines, laser trackers or cameras are limited by the cost, complex operation or the resolution. The purpose of this paper is to propose an approach and calibration equipment to address these issues.

Design/methodology/approach

The proposed method relies mainly upon a laser pointer attached on the end‐effector and single position‐sensitive devices (PSD) arbitrarily located on the workcell. The automated calibration procedure (about three minutes) involves aiming the laser lines loaded by the robot towards the center of the PSD surface from various robot positions and orientations. The localization is guaranteed by precise PSD feedback servoing control, which means physically the intersections of each pair of laser lines (virtual lines) are on the same point. Based on the untouched single‐point constraint, the robot joint offset calibration is implemented. Using the authors' proposed approach, a portable, low‐cost, battery‐powered, wireless and automated calibration system was implemented. Error analysis was conducted on the system.

Findings

The localization error of the developed calibration system is within 2 μm. The errors in joint space are magnified in PSD plane, and consequently the resolution in the joint space is improved. The standard deviation of the identified parameters was small (10‐2), indicating the stability of the calibration method. Both simulation and experimental results verify the feasibility of the proposed method and demonstrate the developed calibration system can identify joint offset with uncalibrated laser tool parameters.

Originality/value

The paper shows how a portable calibration system for joint offset of industrial robots was developed and how the goal of fast, automated, low‐cost, portable, and high precision calibration methods for joint offset was achieved.

Details

Industrial Robot: An International Journal, vol. 38 no. 6
Type: Research Article
ISSN: 0143-991X

Keywords

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Article
Publication date: 1 July 2014

Ibrahim H. Garbie

The purpose of this paper is to propose a “Reconfiguration Methodology” in manufacturing systems that they can become more economically sustainable and can operate…

Abstract

Purpose

The purpose of this paper is to propose a “Reconfiguration Methodology” in manufacturing systems that they can become more economically sustainable and can operate efficiency and effectively. This methodology will allow customized flexibility and capacity not only in producing a variety of products (parts) and with changing market demands, but also in changing and reengineering the system itself.

Design/methodology/approach

Reconfigurable manufacturing system (RMS) is a philosophy or strategy which was introduced during the last decade to achieve agility in manufacturing systems. Until now, the RMS philosophy was based changing activities such routing, planning, programming of machines, controlling, scheduling, and physical layout or materials handling system. But the RMS concept can be based on the needed reconfiguration level (NRL), operational status of production systems, and new circumstances (NC). The NRL measure is based on the agility level of the manufacturing systems which is based on technology, people, management, and manufacturing strategies. The components of the manufacturing system design (MSD) consist of production system design, plant layout system, and material handling system. Operational status of production systems includes machine capability (flexibility) and capacity (reliability), production volume or demand, and material handling equipment in addition to the plant layout. The NC are also consisting of new product, developing the existing ones, and changing in demand.

Findings

Reconfiguration manufacturing systems from one period to another period is highly desired and is considered as a novel manufacturing philosophy and/or strategy toward creating new sustainable manufacturing systems. A new reconfiguration methodology for the manufacturing systems will be analyzed and proposed. Two Case studies will be introduced.

Originality/value

The suggestion of a new methodology of reconfiguration including the NRL (configurability index) and the operational status of manufacturing systems with respect to any circumstance is highly considered. The reconfiguration methodology also provides a framework for sustainability in the manufacturing area which mainly focussed on manufacturing systems design.

Details

Journal of Manufacturing Technology Management, vol. 25 no. 6
Type: Research Article
ISSN: 1741-038X

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Article
Publication date: 30 July 2019

Kamal Khanna and Rakesh Kumar

The purpose of this paper is to present an organized review of existing research on reconfigurable manufacturing system (RMS). The paper considers majority of the…

Abstract

Purpose

The purpose of this paper is to present an organized review of existing research on reconfigurable manufacturing system (RMS). The paper considers majority of the prominent research articles in the domain of RMS published ever since RMS was envisaged in 1997.

Design/methodology/approach

The paper systematically reviews, classifies and analyses the published literature on postulations and design of RMSs. The general observations from the literature and research gaps recognized thereon are highlighted at the end of each section/sub-section.

Findings

The paper reveals important aspects related to RMS research since its inception. It also recognizes the areas of RMS research requiring more focus. The study also highlights open issues and future directions for further research.

Practical implications

The literature in the domain of RMS has so far been narrow. This paper reviews the prominent research in this field and presents an overview of its conceptual developments and various mathematical models for the RMS design and its optimization so far developed by the researchers. Further, manufacturing advancements and future directions have also been proposed for the efficient execution of RMS paradigm in manufacturing industries.

Originality/value

The paper provides an organized listing of published research work in the field of RMS. This work will provide an insight to the researchers, practitioners and others related directly or indirectly to this field to develop and understand better strategies for supervising and controlling the smooth implementation of RMS.

Details

Benchmarking: An International Journal, vol. 26 no. 8
Type: Research Article
ISSN: 1463-5771

Keywords

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Article
Publication date: 18 October 2011

Tsu‐Ming Yeh

Facing keen worldwide competition, it is not enough for companies to pursue customer satisfaction; they must actively pursue customer delight. This paper seeks to design a…

Abstract

Purpose

Facing keen worldwide competition, it is not enough for companies to pursue customer satisfaction; they must actively pursue customer delight. This paper seeks to design a work‐in‐process (WIP) exception handling system (WIPEHS) not simply measuring on‐time delivery performance for managers to take necessary improvement activities. It helps managers detect abnormal WIP levels in advance, trigger rectifying actions and finally notify pertinent people to coordinate roots causes and preventive means.

Design/methodology/approach

The structure of WIPEHS is proposed and then constructed with a soft package, Vigilance. A typical semiconductor factory is built and production data are simulated to evaluate the effectiveness of WIPEHS.

Findings

Collecting and analyzing results from the simulated typical semiconductor factory, the paper finds that the proposed system can effectively improve on‐time delivery performance; and that durations from a WIP exception detected a WIP exception back to normal and durations between two successive WIP exceptions significantly.

Practical implications

It helps factories outperform due dates, achieving significantly higher performance than prior performance without the production exception handling system, which should greatly please customers.

Originality/value

The proposed WIPEHS provide a total solution for undesirable production variations potentially harmful to due‐date performance. It anticipates WIP exception, notifies pertinent recipients, tracks the progress of exception resolution, and provides a forum for discussion of the root causes.

Details

Kybernetes, vol. 40 no. 9/10
Type: Research Article
ISSN: 0368-492X

Keywords

Content available
Article
Publication date: 8 June 2018

Hang Fa Tong and Hong Yan

This paper examines the possible cooperation options in terms of empty container repositioning across alliances for shipping lines based in the Greater China Region…

Abstract

Purpose

This paper examines the possible cooperation options in terms of empty container repositioning across alliances for shipping lines based in the Greater China Region (China, Taiwan and Hong Kong SAR), after the three global shipping alliances reformed in April 2017.

Design/methodology/approach

This paper offers a comprehensive review to the latest shipping alliances and introduces a new cooperative dimension among shipping lines based in the Greater China Region which are member of different shipping alliances.

Findings

Cooperation among shipping lines in the Greater China Region in terms of empty container handling is possible in terms of resource sharing among shipping lines across alliances that fosters mega shipping line formation in the future.

Practical implications

Shipping lines should review their current empty container repositioning strategies and explore cooperation among non-alliance members having headquarters in proximity for quick responsiveness in empty container repositioning plan and execution.

Originality/value

This is a research directly analyzing the empty repositioning plan of the major shipping lines and their major service routes, fleet and containers.

Details

Maritime Business Review, vol. 3 no. 1
Type: Research Article
ISSN: 2397-3757

Keywords

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Article
Publication date: 30 August 2011

Jurriaan Souer, Dirk‐Jan Joor, Remko Helms and Sjaak Brinkkemper

The main purpose of this paper is to improve a web content management system (WCMS) product line for future implementations by identifying software commonalities in…

Abstract

Purpose

The main purpose of this paper is to improve a web content management system (WCMS) product line for future implementations by identifying software commonalities in WCMS‐based web applications. WCMS plays a central role in modern web application development: most large public and internal web sites are based on a WCMS foundation. If we can improve the implementation process, the effectiveness and efficiency of web application development will increase significantly.

Design/methodology/approach

This research identifies reusable solutions from existing WCMS implementations using problem diagrams and structured goal modeling. From configurations were matched with atomic e‐business models by linking them to the strategic competencies through bottom‐up goal modeling. A designed method was constructed on how requirements can be elicited for WCMS implementations using goal modeling and problem frames.

Findings

The resulting method provides insight in relevant e‐business models and their relation to software product lines. Moreover, the approach is applied in a WCMS study which demonstrates its applicability.

Practical implications

The practical implications of this research is twofold: WCMS developers now have a method to improve their product line based on e‐business models; and requirements engineers implementing WCMS can use this model to apply reusable software and prioritize requirements. Both will potentially have a large impact on the effectiveness of implementations since most web applications are developed with WCMS.

Originality/value

The paper presents a novel approach for efficient and effective identification of software commonalities. This research is part of the web engineering method that focuses on development of web applications based on WCMSs.

Details

International Journal of Web Information Systems, vol. 7 no. 3
Type: Research Article
ISSN: 1744-0084

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Article
Publication date: 23 March 2010

Hsiu‐Chun Cheng, Mu‐Chen Chen and Chi‐Kuo Mao

The primary aim of this paper is to investigate the evolutionary process and collaboration within Taiwan's cut‐flower supply chains. The paper also go on to discuss the…

Abstract

Purpose

The primary aim of this paper is to investigate the evolutionary process and collaboration within Taiwan's cut‐flower supply chains. The paper also go on to discuss the enablement of supply chain coordination through information technology (IT) adoption and network effects, as well as performance improvements achieved by the introduction of the wholesale information sharing hotline (WISH) system.

Design/methodology/approach

This paper examines the evolutionary process in Taiwan's cut‐flower supply chains from a macro‐study perspective, based upon primary data obtained from in‐depth interviews. The paper also applies multiple regression analyses from a micro‐study perspective, in order to gain insights into the evolution of market share within the supply chains, thereby facilitating the investigation of the effectiveness of the WISH system.

Findings

The results reveal that the auction houses are heavily dependent upon reliable sources of supply, and that in the earlier stages of the evolutionary process, they played a mediating role in the formulation of auction lines based upon retailer demand through the adoption of the e‐auction mechanism. Since then, the operational performance of the auction houses has been improved considerably, with horizontal coordination being supported by information sharing through the WISH system. The network effect is found to have a positive correlation with the number of participants within the system.

Originality/value

This paper focuses specifically on the evolutionary process of the cut‐flower supply chains in Taiwan, examining the simultaneous achievement of both vertical and horizontal collaboration through the advancement of IT.

Details

Industrial Management & Data Systems, vol. 110 no. 3
Type: Research Article
ISSN: 0263-5577

Keywords

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Article
Publication date: 15 August 2019

Donghua Zhao, Weizhong Guo, Baibing Zhang and Feng Gao

This paper aims to investigate the circulation of moist silica sand to provide appropriate feeding modes and references for designing the coating device when printing sand…

Abstract

Purpose

This paper aims to investigate the circulation of moist silica sand to provide appropriate feeding modes and references for designing the coating device when printing sand mold with line-forming.

Design/methodology/approach

First, this paper briefly introduces sand mold printing with line-forming and the circulation problem brought by moist silica sand. The outlet may be choked due to poor flowability and solidification characteristic, resulting in poor dimensional tolerance and even production failure. Then, based on circulation modeling, a series of feeding modes is proposed to guarantee adequate feeding, avoid solidification and ensure successful fabrication. Finally, the GUI of control software is developed, including slicing, path planning and the function of virtual printing.

Findings

Several feeding modes of moist silica sand are put forward to avoid the choke.

Research limitations/implications

The authors will further investigate the flowability of furan no-bake sand based on experiments.

Originality/value

This paper is going to provide references for the novel design of nozzle, prototype and sand mold printing, influencing significantly on mold manufacturing and the casting industry. This research applies equally to equipment having the circulation of high moist particles with solidification features.

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Article
Publication date: 16 August 2011

Martin Cave and Tony Shortall

The purpose of this paper is to set out the history and content of the European Commission's Recommendation on the regulation of next generation access networks, published

Abstract

Purpose

The purpose of this paper is to set out the history and content of the European Commission's Recommendation on the regulation of next generation access networks, published in September 2010. The aim is to assess the Recommendation in terms of its likely impact on harmonisation and certainty of regulation within the European Union and on investment and competition.

Design/methodology/approach

The approach adopted is to review the European Commission's Recommendation from the standpoint of regulatory economics.

Findings

The publication in September 2010 of the Recommendation on the regulation of next generation access networks completed a process which had begun two years and two drafts previously. The paper sets out the background to the decision to prepare a Recommendation for national regulators supervising the installation of fibre based networks, where the fibre might go either to the premises (FTTP) or to the street cabinet (FTTC). It also describes the development of the Recommendation from the first draft in September 2008 to the final draft in September 2010. It concludes that the delay in issuing the Recommendation created an interval in which national regulators pursued their own diverse policies, to the detriment of harmonisation. In terms of investment and competition, the successive drafts appear to have diminished pressure on competitors to build their own infrastructures, with consequential effects on the likely form of competition. Finally, a degree of regulatory uncertainty has been created in member states where the regulator has pursued in its market reviews of fibre access products remedies which are at odds with the Recommendation.

Originality/value

This is an early appraisal of a European Commission Recommendation which is likely to have a significant impact on European communications policy and regulation.

Details

info, vol. 13 no. 5
Type: Research Article
ISSN: 1463-6697

Keywords

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Article
Publication date: 9 August 2011

Arash Shahin and Rezvan Jaberi

The purpose of this paper is to propose an integrative model of leagile production and to examine its influence on the quality of products based on Six Sigma approach.

Abstract

Purpose

The purpose of this paper is to propose an integrative model of leagile production and to examine its influence on the quality of products based on Six Sigma approach.

Design/methodology/approach

A new model has been proposed in which the three strategies of postponement, mass customization, and modularization are included together with an executive algorithm. The proposed model has been examined using three main products of the Ghods Manufacturing Group, which is a manufacturer of truck body parts, from March to July 2008. In the case study, upstream and downstream processes (after processes warehousing of the semi‐manufactured parts) have been considered for the implementation of lean and agile production strategies, respectively. The product waiting time in the production section has been considered as the lean production indicator, and the warehousing time in the final warehouse has been considered as the indicator of agile manufacturing. These indicators have been evaluated before and after implementation of the proposed model and the sigma level of the studied processes has been evaluated.

Findings

The results imply that the sigma level the product A has been improved by 147 percent considering the first indicator and by 8 percent considering the second indicator. Also, product B has 65 and 47 percent and product C has 65 and 150 percent of improvement considering the two indicators, respectively.

Research limitations/implications

The proposed model has not been implemented in a wide range of operations and has not covered all of the products of the case study. Also, due to the lack of literature on standard criteria for evaluating leagile production, the criterion of the duration of waste has been defined and used for leanness and the duration of final storage has been defined and applied to assembly line based on specific orders from customers, which in turn might be realized as a limitation. In comparing the process before and after improvement, there might exist other unknown factors by which, results would be affected.

Originality/value

While the literature includes researches on leagile production and its advantages, this investigation further proposes a leagile production model which includes three strategies of postponement, mass customization, and modularization and is employed based on Six Sigma approach.

Details

International Journal of Lean Six Sigma, vol. 2 no. 3
Type: Research Article
ISSN: 2040-4166

Keywords

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