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YEMEK PAYDOSUNDA MAKİNALARIN İŞÇİ GÖZETİMSİZ ÇALIŞTIRILMASI DURUMUNDA MAKİNA RANDIMANLARININ SORGULANMASI: TEKSTİL ENDÜSTRİSİNDE BİR UYGULAMA

Year 2015, Volume: 25 Issue: 4, 329 - 336, 01.12.2015

Abstract

Tekstil iplik endüstrisinde işçilere genellikle birden fazla makina tahsis edilir. İki veya üç posta çalışma uygulamasının olduğu fabrikalarda işçilere yemek ve dinlenme ihtiyaçları için verilen 30 dakikalık süre zarfında randımanda olabilecek muhtemel kaybın minimum olması için çoğunlukla makinaların işçi gözetimsiz kendi başlarına çalışmalarına müsaade edilir. Bu uygulama çoğu kere yararlı olabilmekle beraber bazı durumlarda faydasız, maliyetli ve hatta riskli olabilmektedir. Bu çalışmada simülasyon metedolijisi kullanılarak söz konusu uygulamanın hangi durumlarda ve ne miktarlarda faydalı veya faydasız olduğunun belirlenmesi amaçlamaktadır. Bu amaçla, yemek paydosunda makinaların kapatılmayıp kendi kendine çalışmasına müsaade edilmesi ve kapatılması durumlarında makina randımanlarının hesaplanması ve karşılaştırılması yapılmaktadır. Bu araştırmada iki temel parametre göz önünde bulundurulmaktadır. Bunlardan bir tanesi iplik kopuş oranı olup genellikle kullanılan malzemenin kalitesi, makina ayarı ve bakımı ve ortam şartları (nem ve sıcaklık) ilgilidir. Diğeri de işçiye tahsis edilen iğ veya makina sayısıdır. Elde edilen bulgular bu uygulamanın küçük kopuş oranları ve makina sayıları için yararlı, yüksek kopuş oranı ve makina sayıları için faydasız hatta zararlı olduğunu göstermektedir

References

  • 1. R. Raja, K. Suryaprakasa Rao. Performance evaluation through simulation modeling in a cotton spinning system. Simulation Modelling Practice and Theory 15 (2007) 1163–1172
  • 2. Engin. A. B. Determination of optimum economic inspection by economic control Chart design and by machine efficiency estimation: an application in weaving industry. Simulation Modelling Practice and Theory 2008; 16: 147-170.
  • 3. Engin. A. B. Comparative analysis for periodical and random servicing systems Considering different working circumstances: A textile application. Journal of Manufacturing Systems 28 (2009) 89-97
  • 4. Amar. S. Risk Analysis of the Pakistani Textile Industry: Macro Analysis. Thesis Laurea University of Applied Sciences.

INVESTIGATION OF MACHINE EFFICIENCIES IN CASE OF MACHINES CONTINUE TO RUN WITHOUT OPERATOR SUPERVISION BY REASON OF LUNCH TIME BREAK: AN APPLICATION IN THE TEXTILE INDUSTRY

Year 2015, Volume: 25 Issue: 4, 329 - 336, 01.12.2015

Abstract

In the textile spinning industry the operators are assigned generally multi machines. In two or three shifts working applications the operators deserve free time of 30 min for their lunch and rest needs. During this time, machines are mostly allowed to run without supervision of operator expecting the minimum loss at the efficiencies of machines. This application seems beneficial in some cases indeed. However, this application can be useless, costly and even risky in some cases too. This work aims by using simulation methodology to expose the borders of the feasible and unfeasible areas of this application. For this aim, the efficiency of spindles or machines are estimated and compared for both strategies of a) to allow the machines to running by themselves without supervision of operator and b) to shut down the all machines completely during lunch time. The parameters used in the investigation are a) the yarn (end) breaking rates which are related basically quality of material, setting and maintenance of machines, conditions of environment like humidity and temperature and b) the number of machines or spindles assigned operators. The findings obtained show that for the small yarn breaking rates and small the number of spindles, to allow the machines continuing to run without operators can be useful despite some risks. However, in case of high yarn breaking rates and high number of machines, to allow the machines to running themselves is useless and even ineffective

References

  • 1. R. Raja, K. Suryaprakasa Rao. Performance evaluation through simulation modeling in a cotton spinning system. Simulation Modelling Practice and Theory 15 (2007) 1163–1172
  • 2. Engin. A. B. Determination of optimum economic inspection by economic control Chart design and by machine efficiency estimation: an application in weaving industry. Simulation Modelling Practice and Theory 2008; 16: 147-170.
  • 3. Engin. A. B. Comparative analysis for periodical and random servicing systems Considering different working circumstances: A textile application. Journal of Manufacturing Systems 28 (2009) 89-97
  • 4. Amar. S. Risk Analysis of the Pakistani Textile Industry: Macro Analysis. Thesis Laurea University of Applied Sciences.
There are 4 citations in total.

Details

Other ID JA89EC45VF
Journal Section Articles
Authors

A. Baki Engin This is me

Publication Date December 1, 2015
Submission Date December 1, 2015
Published in Issue Year 2015 Volume: 25 Issue: 4

Cite

APA Engin, A. B. (2015). INVESTIGATION OF MACHINE EFFICIENCIES IN CASE OF MACHINES CONTINUE TO RUN WITHOUT OPERATOR SUPERVISION BY REASON OF LUNCH TIME BREAK: AN APPLICATION IN THE TEXTILE INDUSTRY. Textile and Apparel, 25(4), 329-336.

No part of this journal may be reproduced, stored, transmitted or disseminated in any forms or by any means without prior written permission of the Editorial Board. The views and opinions expressed here in the articles are those of the authors and are not the views of Tekstil ve Konfeksiyon and Textile and Apparel Research-Application Center.