• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.7 no.3
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• pp.85-91
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• 1998

In this paper an assessment has been proceeded about component technology that stamping car panel can be designed and manufactured efficiently. Also this study investigate standard model of CAD/CAM system in production process of automobile dies, Recently, motor companies are doing their best to increase productivity and to reduce production time. So to develop user-friendly and effective standard model of CAD/CAM system is very important. The cbtained results will lead to the reductions in lead time and man-hour required for the design and manufacture of the automobile dies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.12
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• pp.3559-3566
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• 2009

Heating and cooling plate are separately used for heating and cooling cast dies for footwear parts. However, this has a disadvantage that it takes a long time to manufacture footwear parts etc.. In the present study, the pipe-inserted cast die for press forming process was proposed to substitute heating and cooling plate. The temperature distribution on the pipe-inserted cast die was analyzed by numerical work using a FEM. And its temperature was measured by LabView. A manufacturing by the pipe-inserted cast die for press forming process was effectively verified, especially in a productivity.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.6
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• pp.692-696
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• 2017

The shape of press components is becoming increasingly complex due to customer demands, process shortening and cost savings. In addition, the stability of the pressing process frequently varies during mass production due to the influence of many factors. In order to ensure the process stability, it is necessary to establish a process in which reproducibility is realized in tolerance, which is sufficient for advance study of shape, material, press, mold and lubrication. However, unforeseen changes in process parameters cause disruptions in production line shutdowns and production planning. In this paper, we introduce a method to monitor a real time process by applying a sensor to a press mold. A non-contact type sensor for measuring the flow of a sheet material and an example of an experiment using the optical sensor which is highly applicable to mass production are presented. An optical sensor was installed in a cylindrical drawing mold to test its potential application while changing the material, blank holder force, and drawing ratio. We also quantitatively determined that the flow of other sheet materials was quantified locally using a square drawing die and that the measured value was always smaller than the drawing depth due to the material elongation. Finally, we propose a field that can be used by attaching the sensor to the press mold. We hope that the consequent cost reduction will contribute to increasing global mold competitiveness.

• 대한공업교육학회지
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• v.41 no.1
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• pp.1-21
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• 2016

The purpose of this study is to analyze job of die and mold makers for apprenticeship education of specialized high school using DACUM method. The contents of this study were to identify the duties, specific tasks performed and the level of importance, difficulty, frequency and entry level on each task. This study also make out a DACUM chart of die and mold makers for apprenticeship education of specialized high school. The DACUM committee, which consisted of one facilitator, nine die and mold experts, one recorder and one coordinator, was established to conduct DACUM. The conclusions are as follows; First, this study defines a die and mold makers as 'a person who make it possible to manufacture/assemble/inspect die and mold parts using various machine tool'. Second, duties in job of die and mold makers for apprenticeship education were total 12 and total tasks in job of die and mold makers for apprenticeship education were 86. Third, this study determine the level of importance, difficulty, frequency and entry level about each task. Finally, this study make out a DACUM chart of die and mold makers for apprenticeship education of specialized high school based on the results of DACUM job analysis. And knowledge, skills, tools, and positive behaviors, future trends/concerns about die and mold makers for apprenticeship education of specialized high school were presented.

• 기계와재료
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• v.8 no.4 s.30
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• pp.13-22
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• 1996

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.11
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• pp.4108-4114
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• 2010

The automation of the machining and manufacturing process of press die is designed to shorten the working time by avoiding unnecessary repetitive works and to obtain subject articles with standard quality. Automation as used in this paper includes 3-D die design, machining center, wire-cut electrical discharge machining, and drawing works. This paper deals with research work on the automation of the machining and manufacturing process of the press die after 3-D die design using the Irp bracket for the control box sensor. The research was conducted under the same setting as that of die design.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.4
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• pp.708-712
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• 2007

Restriking is a shaping method added to the processed products to get higher precision and accuracy in the press die process. This method is frequently used in bending works and drawing works. The purpose of this research is to develop a design for rectangular drawing die punch and die block form which enables drawing formation and restriking in one set.

• Journal of the korean Society of Automotive Engineers
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• v.17 no.2
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• pp.24-34
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• 1995

여기서는 최근의 자동차 금형의 최적설계 기술개발을 위한 국내의 연구동향을 중심으로 살펴보고 실제 CAE 기술의 적용 예를 소개하고자 한다. 1. 금형설계에서의 CAE 기술의 도입. 2. CAE 기술로서의 FEA 해석. 3. CAE 도입의 기술적 제 문제. 4. 프레스 공정의 2차원/3차원 해석. 5. 최적 블랭크 형상설계기술. 6. 강건설계를 위한 CAE 기술의 응용.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1996.04a
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• pp.358-361
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• 1996

공정계획은 숙련된 작업자의 경험의 경험과 지식에 의해서 작성된다. 이러한 과정을 컴퓨터를 활용하여 자동화함으로써 공정계획을 수립하는 시간은 물론 이와 연관된 설계변경, 설비선정, 견적, 재고관리 등 반복적인 업무의 스피드와 정확도를 향상시킬 수 있으며, 비숙련자라도 쉽게 공정을 파악하고 최선의 공정계획을 수립할 수 있다. 자동차 외판제조용 대형 프레스 금형을 대상으로 자동화된 공정계획 시스템을 구현하기 위해 비공식 또는 공식으로 일어나고 있는 공정에 관한 지식을 수집, 분석하여 금형의 패턴과 형구, 부품, 사양으로 분류하여 표준화하였고, 이를 기반으로 공정계획을 컴퓨터가 자동으로 생성할 수 있도록 공정에 관한 Knowledge를 Relational Data Model로 표현하였다. 자동공정계획 시스템은 단계별 Tree 방식으로서, 각 단계마다 시스템이 제공하는 질의에 대해 설계자 또는 공정계획자가 설계도면을 참고하여 이에 대응하면 해당 금형에 대한 적합한 공정계획과 작업공수가 제시되도록 설계 개발되었다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.5 no.6
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• pp.511-514
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• 2004

Punch and die plate which are press die parts can be made using machine tool or using both machine tool and W-EDM. When machine tool is used, the die life is 2,000,000 to 230,000 strokes. But with W-EDM, the die life is 700,00 to 800,000 strokes. This can be caused by the process deformation layer after W-EDM. SEM pictures of processed section before and after W-EDM are taken to see if the process deformation layer appeared. Also the elimination method is studied.