• Title/Summary/Keyword: Assembly Rationalization

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A Study on Flexible Pallet Design for Assembly Rationalization (조립합리화를 위한 유연성 있는 Pallet 설계에 관한 연구)

  • Mok, Hak-Soo;Lee, Jae-Man;Yang, Tae-Il
    • Journal of the Korean Society for Precision Engineering
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    • v.16 no.1 s.94
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    • pp.75-86
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    • 1999
  • In the assembly system, a pallet plays an important role of transfer and storage. As products become various, many different pallets are also necessary. Since some of them are redundant, a design of pallet with high flexibility is important. This paper suggests design alternatives, in designing pallets with high flexibility. The purpose of this study is to rationalize assembly process of mid-small size products. Every pallet has suitability values depending on characteristic factors of a product, and this value is determined by using AHP (Analytic Hierarchy Process) technique. As the characteristic factors of a product are changed, the suitability value is also changed. Design alternatives can be found by tracing change of the suitability value, which are based on correlation between the characteristic factors of a product and a pallet element.

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Evaluation System of Weak Process for Assemblability in Small-sized Product (소형 제품에 있어 조립 생산성 향상을 위한 취약 공정 평가 시스템)

  • 목학수;황건용;조종래
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.6
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    • pp.64-78
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    • 1998
  • In this paper, on the basis of factory rationalization, the detection and evaluation system of weak assembly process was developed to analyze the processes for improvement of assembly productivity in the current assembly system. Using this detection and evaluation system of weak assembly process, the weak degrees of assembly process were quantitatively calculated. In this system, the improved design rules were constructed for assemblability and the redesign alternative was Presented for elimination of weak Process. After review of the redesign alternative, it was applied to the actual assembly system.

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The holons settlement of the processing and assembly system for the human-oriented manufacturing system forming (인간중심의 제조시스템 구축을 위한 가공 및 조립시스템의 holon 설정)

  • Joung, Boum-Jin;Kim, Day-Sung;Kim, Man-Jin
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1996.04a
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    • pp.639-643
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    • 1996
  • The manufacturing system has been changed from labored manual process system, which is managed and operated by managers and operators, to CIMS(Computer Integrated Manufacturing System) for integration of manufacturing, research, development and consumption in the age of diverse customer's needs[6]. However, because it involves the hierarchical system composed of many sub-systems interface and its installation & setup cost is very expensive, CIMS has many difficulties in constructing the durable optimal system that is able to adapt to rapid in-outer circumstance change. So, HMS(Holonic Manufacturing System), the new conceptual manufacturing system having the self-problem-solving and self-organization[11], is instructed to solve these difficulties that it has in these days. The system flexibility in the HMS is able to be ensured, with the integration of human's strong points into mechatronics manufacturing system to reduce interference among sub-systems. In this paper, the manufacturing process rationalization and integration of the assembly line in an automobile industry, has lots of problems in efficiency and productivity, has been studied in an early stage of converting the present state of process system to HMS, which is human-oriented processing system, to improve the line efficiency, system productivity and reliability by using human capability effectively. This paper is derived into the human-oriented & object-oriented holons settlement of the shop floor system composed of processing, assembly and material handling system for the future holonic manufacturing system, which is going to be computer supported control system.

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Implications of Japanese Private Detective Service (일본 탐정업의 현황과 시사점)

  • Kim, Il Gon
    • Convergence Security Journal
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    • v.12 no.5
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    • pp.3-13
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    • 2012
  • Japan came to result in enacting and enforcing the law on rationalization of service pertinent to the Private Detective Service Law in order to rationalize the illegal service realities of private detective service dealers and detective agencies, which were flooded in 2006. Since the enactment of the law, the problems are still taking place in relation to Japanese private detective service as of 2012. However, Japan's regulatory agencies can be known to revise the corresponding statute and to make effort to improve consciousness of agencies in order to improve these problems. Accordingly, it can be considered to be great in implication as for our country's introduction of private investigation service in the future. Arranging these contents, they are as follows. First, it is improvement in problems related to other statutes according to performance of private detective service. Second, it is reinforcement in management of private detective service violators. Third, it is propulsion of rationalization in cost according to a contract of private detective service. Accordingly, it can be considered to be necessary for being newly legislated at the 19th National Assembly from the perspective dubbed development and social right f unction in private investigation industry, by further supplementing Japan's these problems and arranging improvement plans so that the corresponding service called private detective service can do more public function in society.

Peptide Domain Involved in the Interaction between Membrane Protein and Nucleocapsid Protein of SARS-associated Coronavirus

  • Fang, Xiaonan;Ye, Linbai;Timani, Khalid Amine;Li, Shanshan;Zen, Yingchun;Zhao, Meng;Zheng, Hong;Wu, Zhenghui
    • BMB Reports
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    • v.38 no.4
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    • pp.381-385
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    • 2005
  • Severe acute respiratory syndrome (SARS) is an emerging infectious disease associated with a novel coronavirus (CoV) that was identified and molecularly characterized in 2003. Previous studies on various coronaviruses indicate that protein-protein interactions amongst various coronavirus proteins are critical for viral assembly and morphogenesis. It is necessary to elucidate the molecular mechanism of SARS-CoV replication and rationalize the anti-SARS therapeutic intervention. In this study, we employed an in vitro GST pull-down assay to investigate the interaction between the membrane (M) and the nucleocapsid (N) proteins. Our results show that the interaction between the M and N proteins does take place in vitro. Moreover, we provide an evidence that 12 amino acids domain (194-205) in the M protein is responsible for binding to N protein. Our work will help shed light on the molecular mechanism of the virus assembly and provide valuable information pertaining to rationalization of future anti-viral strategies.

A Study on the Improvement of Load Balance for Materials Supply Worker in Automobile Assembly Line (자동차 조립공정 부품공급 작업자별 부하밸런스 평준화 알고리즘 연구)

  • Jang, Jung-Hwan;Jang, Jing-Lun;Quan, Yu;Jho, Yong-Chul;Kim, Yu-Seong;Bae, Sang-Don;Kang, Du-Seok;Lee, Jae-Woong;Lee, Chang-Ho
    • Journal of the Korea Safety Management & Science
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    • v.18 no.4
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    • pp.107-114
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    • 2016
  • The efficiency of the purchasing and procurement logistics is important in automotive industry. The rationalization of production system is directly impact on productivity and quality. For this reason importance of logistics is high. Despite we are continuously making effort, our country are still below the level than developed country on logistics efficiency. Rising labor costs is an important factor in increasing logistics costs. So workforce reduction in logistics department is a large part. We deal with A-company inbound logistics, especially procurement logistics in automotive logistics as research object. So in this study we do research on work load balance about workers. We do research on 1,475 kinds of components in procurement process. We applied work load balance algorithm on chassis, final, sequence, trim warehouses workers. According to number of workers and average M/H, algorithm is applied in two ways. After applied work load balance algorithm we reduced numbers of workers from 28 to 20 and improved worker load balance rate from 47.1% to 93.7%.

Quality Evaluation Method by Analysis of Waveform in Automatic MIG Circumferential Welding of FCD500 and STS436 (FCD5OO과 STS436의 자동 MIG 원주 용접에서 파형해석에 의한 품질 평가 방법)

  • Yu, Gwang-Seon;Kim, Jin-Uk;Go, Jae-Won;Park, Jae-Yong;Lee, Cheol-Ho;Jo, Sang-Myeong
    • Proceedings of the KWS Conference
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    • 2005.06a
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    • pp.331-333
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    • 2005
  • It comes up conversation in automobile industry that some technologies related to production and quality for goods have to be developed to make rationalization of the unit cost of production because material of car muffler is replaced by expensive stainless steel having corrosion-resistance and oxidation-resistance. Quality evaluation and control is direct method for the company producing welded goods in large quantities to increase productivity and to improve quality. It seems that prevention of inferior quality and increasement of productivity will be hard if production design does not have quality evaluation method related to weld assembly, They have been producing welded goods using MIG weld but still do not have not only quality evaluation method but also evaluation criterion for welded joint. In this study, the way for development of quality evaluation method is showed by analysis and calculation of waveform to improve technology related to welding process

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A Study on Distribution Standardization through AMOS Analysis (AMOS 분석을 통한 물류효율화에 관한 고찰)

  • Koh, Jae-Ho;Kim, Tae-Hwan;Kim, Sok-Eun;Kang, Kyung-Sik
    • Journal of the Korea Safety Management & Science
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    • v.10 no.3
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    • pp.167-181
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    • 2008
  • There are lack of labour and increase in logistics costs due to rapid change in logistics environments and the demand for logistics. The reality is that over spending on logistics costs are getting worse due to lack of logistics standardization. An example will be excessive logistics costs caused by unsatisfactory use of logistics equipments in wholesale markets. The logistics efficiency is falling due to delays in using logistics equipments and standardization. Therefore, there needs standardization of logistics functions and unit of handling in each stage from packing, unloading, storage, transporting, logistics information and needs logistics standardization on equipments, machineries used for the above. Standard unified with standardization is called specification and if standardization is applied broadly in manufacturing or processing, inspection than each process in terms of production can be managed rationally and labour skills will improve and product quality will be evenly maintained and compatability of each part in terms of assembly will be maintained thus materials and labour could be saved thus results in increasing productivity and lowering production costs. Also, if it is applied in industry at state-level then there will be rationalization in consumption in circulation as in purchase of raw materials, sales of products, purchase of products by consumers and contribute in improving compatibility and fair transactions. This paper is aimed to help in first solving factors affecting the most in improving logistic efficiency among unit load system and logistic hollowization, standardizing logistics base, standardizing logistics information. The study conducted surveys on limited companies but hope that in the future the target companies can be divided further into types, industries and conduct more demonstrative analysis.

A Study on System Construction to the Product Liability Law-with focus on a small & medium business (제조물책임법에 대응하기 위한 시스템 구축에 관한 연구 -중소기업을 중심으로-)

  • Han, Min-Suk
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.6
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    • pp.596-608
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    • 2017
  • In 2002, the government arranged an institutional strategy to make it possible for a consumers to make a claim for damages caused by product defects against a business that produces and sells a product by enforcing the Product Liability Law(hereinafter referred to as 'PL'). On the other hand, due to the recent humidifier sterilizer accident, approximately 12 cases of related bills, such as a revised bill for the product liability law, have been proposed to the National Assembly at present in an effort to introduce the group action system and punitive compensation system for the purpose of the strengthening of the corporate product liability, and consumer damage relief. Ironically, as much as 62.6% of small & medium businesses, which are actual interested parties to this bill, are unaware of this. Many companies are responding to PL with the rationalization of document preparation & storage, clarification of responsibility relations with related business operators, and PL insurance policy purchase, or securing compensation funds as a means of Product Liability Defense(PLD), but the methods of preparation such as this leave much room for limits on the considerations of product design and product safety. This paper presents the individual management system model with more focus on product safety by looking into the clear concept of PL and the countermeasures against it, grasping the relevance between the PL system and individual management system, and integrating the PL response system in preparation for the PL. It is hoped that the result of this research objective will be evaluated as a rational countermeasure for small & medium businesses to respond effectively to the PL.

The Rationalization of PDM in Pusan Port for the Period of Round Pacific Area (환태평양 시대의 부산항 물류산업 합리화)

  • Park, S. Y.;Park, C. S.
    • Journal of Korean Port Research
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    • v.6 no.1
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    • pp.93-110
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    • 1992
  • The most change in this century is supposed to be declination of ideology, and block of world economy. Addition to down full of cold war atmosphere around Northeast Asia, not only economic and social mood in this region is dramatically changed, but also it gave birth to the block of Northeast economy that accerlated new hub of world economy. According to dramatic change of economic surroundings the dynamic potential of growth in this region will be guided to enlarge inter-regional trade and increase volume of trade, thus suggests to grow steadily transportation. cargos in this region will have to arrange the system of delivery and inner transportation, accessary facilities, inter-regional harbors if North America and EC has connected easily. As have accerlated GATT and UR represented multilateralism and regionalism, it has regulated to increase trades of region due to relief of the trade barrier through specific areas has agreed with separately. The flow of regionalism of world economy has appeared to realize EC and NAFTA centered U.S.A, and also has presented to free trade region or one-size market agreement in Asia as APEC, EAEG in Malaysia, and etc. In defense to this block and internationalism of world economy, Pusan has to come forward to the hub of Northeast others has proposed a project to dominate the Northeast, Economy Association Agreement as Far East comprehensive development project in USSR, Hunchun development project in NK, and East Sea development project in PRC, Niigate regional development in Japan, Duman River development project in NK, and East Sea development project in Korea. As this exercise has proceed, Pusan also have arranged development strategy definitely and prepared provisions systematically. Engaging to participate center of delivery system is meant to be completed complex functions, namely the transfer storage processing & assembly function of international commodity. Pusan has ability to be terminal point of TSR. it had been connected to EC as the biggest economy block and TKR as complex transportation root to Far East, it would be the center of inground and seabase delivery terminal to Rotterdom as the biggest container pier and major piers to North-East and South East Asia. In order to provide a Role of 21 century's internationalization, Pusan has appealed to participate in management information research and development connected to Pohang-Ulsan-Changwon-Masan, and has utilized efficiently the resources such as man, material, money and information.

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