• 제목/요약/키워드: Management System of Manufacturing Process

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검사/계측시스템의 능력분석을 포함한 비공정능력지수의 개발과 적용 (Development and Application of Process Incapability Index including Capability Analysis of Inspection or Gage System)

  • 민성진;김계완;류정현;윤덕균
    • 품질경영학회지
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    • 제30권1호
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    • pp.118-132
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    • 2002
  • This paper presents a process incapability index to provide manager with various information of process and to reduce cost. The introduced process incapability indices indicate information about mean and variance of manufacturing process and variance of inspection process to evaluate process capability using ratio of variance and difference between target and mean to specification. This model can be used by the scale of six sigma management.

Variation Stack-Up Analysis Using Monte Carlo Simulation for Manufacturing Process Control and Specification

  • Lee, Byoungki
    • 품질경영학회지
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    • 제22권4호
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    • pp.79-101
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    • 1994
  • In modern manufacturing, a product consists of many components created by different processes. Variations in the individual component dimensions and in the processes may result in unacceptable final assemblies. Thus, engineers have increased pressure to properly set tolerance specifications for individual components and to control manufacturing processes. When a proper variation stack-up analysis is not performed for all of the components in a functional system, all component parts can be within specifications, but the final assembly may not be functional. Thus, in order to improve the performance of the final assembly, a proper variation stack-up analysis is essential for specifying dimensional tolerances and process control. This research provides a detailed case example of the use of variation stack-up analysis using a Monte Carlo simulation method to improve the defect rate of a complex process, which is the commutator brush track undercut process of an armature assembly of a small motor. Variations in individual component dimensions and process mean shifts cause high defect rate, Since some dimensional characteristics have non-normal distributions and the stack-up function is non-linear, the Monte Carlo simulation method is used.

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PC를 이용한 공정관리시스템 개발 (Process Management System using a PC)

  • 송준엽;이승우;이현용
    • 산업공학
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    • 제6권2호
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    • pp.171-181
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    • 1993
  • In this study, a process management system is designed that can automatically control the heat treating atmosphere, and a managment software is developed to monitor and control continously the heat treating process using a n interface device. Especially, a communication protocol is developed to control and monitor atmosphere condition, temperature, surrounding gas, and time. The developed interface device, called COMPORT SELECTOR is to send and receive information from PID controllers and PLC via RS-232C communication. This system will reduce manufacturing cost and cycle time, and improve the effectiveness of working process and quality.

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자동차 부품 현업 분석을 통한 설계 BOM, 생산 BOM, 공정 BOM 구조 설계 (eBOM, mBOM, processBOM structure in analyzing of automobile part industry)

  • 이승우;이재경;이화기
    • 대한안전경영과학회지
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    • 제12권2호
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    • pp.125-132
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    • 2010
  • In accordance with the trend for cooperation of related company, BOM (Bill of Materials) has become an important factor in the manufacturing of production. BOM manages a various basic information of design, production, and process and so on. Especially, automobile industries are related to many company, they build a cooperative system from the communication of information. In this study, we have analyzed a BOM structure of a well-used automobile part industry and proposed a structure of engineering BOM, manufacturing BOM, process BOM for cooperative environment. A proposed various BOM structure are flexible in responding to the situation of structure alternations for automobile part. And also they include in environment factors. It is expected that these BOM structure will be used to basic template in automobile part industry which could be loaded with cooperative hub-system.

전동기 제조업의 지식기반 공정계획 지원시스템에 관한 연구 (Knowledge-based Decision Support System for Process Planning in the Electric Motor Manufacturing)

  • 송정수;김재균;이재만
    • 산업공학
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    • 제11권2호
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    • pp.159-176
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    • 1998
  • In the motor manufacturing system with the properties of short delivery and order based production, the process plan is performed individually for each order by the expert of process plan after the completion of the detail design process to satisfy the specification to be required by customer. Also it is hard to establish the standard process plan in reality because part routings and operation times are varied for each order. Hence, the production planner has the problem that is hard to establish the production schedule releasing the job to the factory because there occurs the big difference between the real time to be completed the process plan and the time to be required by the production planner. In this paper, we study the decision supporting system for the process plan based on knowledge base concept. First, we represent the knowledge of process planner as a database model through the modified POI-Feature graph. Then we design and implement the decision supporting system imbedded in the heuristic algorithm in the client/server environment using the ORACLE relational database management system.

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ERP 시스템 도입과정에서의 생산시스템 설계방안에 관한 사례연구 (A Case Study for Manufacturing System Design on the Introduction of ERP System)

  • 윤영도;강경식;김귀남
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2000년도 추계학술발표논문집
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    • pp.307-310
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    • 2000
  • The target company of this study goes ahead with plan to adopt ERP systems. Hereupon, I want to present the issues which should be considered in the process of ERP system implementation. This study focuses on the manufacturing system, but it also discusses important issues on the selected business area. This study covers the material benefits and functionalities of ERP package, as well as the Importance of studying and understanding on business process, organization change management, and information technology And this case study start with a long-term plan and consider its own unique characteristics and environmental factors.

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유연생산시스템에서 절삭공구 비용절감을 위한 가공시간과 팔렛배분의 최적화 (Saving Tool Cost in Flexible Manufacturing Systems: Joint Optimization of Processing Times and Pallet Allocation)

  • 김정섭
    • 한국경영과학회지
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    • 제23권4호
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    • pp.75-86
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    • 1998
  • We address the problem of determining the optimal processing times and pallet/fixture allocation in Flexible Manufacturing systems in order to minimize tool cost while meeting throughput targets of multiple part types. The problem is formulated as a nonlinear program superimposed on a closed queueing network of the FMSs under consideration. A numerical example reveals the potential of our approach for significant cost saving. We argue that our model can be Integrated Into the process planning system of an FMS to generate efficient process plans quickly.

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이메뉴팩처링을 위한 협업 프로세스 모델링 (Collaborative Process Modeling for Embodying e-Manufacturing)

  • 류광열;조용주;최헌종;이석우
    • 산업공학
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    • 제18권3호
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    • pp.221-233
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    • 2005
  • e-Manufacturing can be referred to as a system methodology enabling the integration of manufacturing operations and IT technologies to achieve objectives of an enterprise. It is recently regarded as a powerful solution to survive in a chaotic marketplace. While conducting an e-Manufacturing project, we first needed to capture collaborative processes conducted by multiple participants in order to define functions of a system supporting them. However, pervasive process modeling techniques including IDEF3, Petri nets, and UML are not sufficient for modeling collaborative processes. Therefore, we first briefly investigate several process modeling methods including aforementioned modeling methods and ARIS focusing on the collaboration point of view. Then, we propose a new modeling method referred to as Collaborative Process Modeling (CPM) to clearly describe collaborative processes. Also, we develop and illustrate a rule for transforming collaborative process models into Marked Graph models to use the analysis power of the Petri nets. Using CPM empowers us to develop collaborative process models with simple notations, understand and facilitate the realization of the collaboration, and verify models before rushing into the development.

프로세스 재설계에 대한 가치평가모형: 제조업체 사례연구 (Evaluation Model of the Value of Process Redesign: A Case Study of Manufacturing Company)

  • 이상재
    • 한국경영과학회지
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    • 제24권4호
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    • pp.81-94
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    • 1999
  • Organization change projects such as Business Process Redesign(BPR) have been implemented by many firms for enhancing their organizational performance. However, management is reluctant to initiate these projects due to enterprise-wide impact and steeper project cost than the traditional system development projects. Thus, there emerges a need to accurately assess the value of the redesigned organizational process for the successful implementation of BPR projects. The purpose of this study is to assess the value of process redesign in the point of resource utilization and allocation, and cycle time and cost reduction. The candidate process and the design alternatives are identified from organizational requirements analysis. The variables and their relations are defined to perform task activity analysis, bottleneck analysis, cycle cost analysis, and resource utilization analysis. A Case study of a manufacturing company indicates that the assessments method proposed in this study is a promising approach to identify the business alternative process that lead to the highest organizational performance.

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서비스 및 사무관리 분야 6시그마 개선활동 진행절차에 관한 사례연구 (An Empirical Study on Implementation Procedure for Six Sigma Projects in Non-Manufacturing Process)

  • 김채수;김연근
    • 산업경영시스템학회지
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    • 제29권1호
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    • pp.56-62
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    • 2006
  • This paper is concerned with a six sigma application to non-manufacturing process. Based on the comparison to manufacturing process, non-manufacturing process has some specific characteristics. The main focus of this study is to introduce an empirical case study on the implementation of DMAIC procedures for non-manufacturing process. We use a simple and practical road map which consists of 13 steps. Some fundamental rules for DMAIC implementation in six sigma projects are also introduced.