• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2000년도 추계학술대회 논문집
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• pp.600-603
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• 2000

In the high carbon steel wire drawing process, the wire temperature increases as the drawing speed is faster in order to increase the production rate in the shop floor. The rapid temperature rise causes the wire fracture in the dry wire drawing process. So, in this paper, the isothermal pass schedule program, which includes the calculation method of wire temperature at each pass, is proposed to prevent the wire fracture due to the temperature rise. Using the isothermal pass schedule program, it is newly proposed the pass schedule design system that prevents the cup-cone defects, improves the elongation of the final products and assures further deformation. As a result, the temperature rise of the wire was decreased and the production rate of the final product is remarkably grown up according to the increase of the final drawing speed than that of the conventional process. Also, the proposed pass schedule design system could give a useful information to the process designer who would design the high carbon steel wire drawing process.

• 한국의류학회지
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• 제24권6호
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• pp.799-809
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• 2000

This study was designed for automated pattern drawing and grading a man's Durumagi, Korean traditional coat in order to reestablished and grade the pattern by Apparel CAD SYSTEM. For the study, AM-250 systems of Gerber as the computer and Macro program as the automated drawing were used. Also, PDS(Pattern Design System) was used for the grading of the original Durumagi pattern. Results were followings; First, the size data that could be standardized by reestablishing the pattern of a man's Durumagi by each size was presented. Second, The pattern was developed by each size. Third, new design was propose for mass production with the traditional design of the DURUMAGI Fourth, The time for making DURUMAGI pattern and the cost through the automated drawings by using the Macro program were reduced. Moreover, was presented the basic data for a ready to made garment like the Western garment. Five, A man's DURUMAGI by CAD System was graded that could be applied to ready to made Hanbok

• 한국컴퓨터산업학회논문지
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• 제4권12호
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• pp.943-952
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• 2003

그레이팅이라는 금속 제품의 자동 설계 시스템인 GDS (Grating automatic Drawing System)는 기본 설계 도면 (Plan Drawing)의 정보들을 바탕으로 여러 세부 도면들을 자동 생성하는 시스템이다. 그러나 GDS를 통해 자동 생성된 도면은 설계자들의 일반적인 치수 기입 요령을 부분적으로 만족시키지 못하고 있으며 또 치수 표시 간의 겹침 현상이 발생하여 설계자가 도면을 수정해야 하는 번거로움이 있었다. 전문가 시스템은 컴퓨터 시스템에 입력된 특정분야에서의 전문가적지식(knowledge)과 사실(fact)들을 이용하여 전문가의 지 식 이 요구되는 문제들을 해결하기 위해 만들어진 시스템이다. 본 논문은 이러한 문제점을 해결하기 위하여 선계 전문가들의 치수 표시법을 지식으로 하여 규칙 기반 전문가 시스템을 구성하였다.

• 전기학회논문지
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• 제59권5호
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• pp.854-859
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• 2010

Distribution Automation System(DAS) is designed to improve operational efficiency by acquisition and control of remote data using its components such as central computation units, communication network and feeder remote terminal units. A conventional human machine interface of the DAS adopts a schematic diagram which is made by drawing power equipments on the geographic information system map. The single line diagram is more useful than the schematic diagram for the main tasks of distribution system operation such as protective relay coordination, service restoration and loss minimization. Since the configuration of the distribution line is changed according to the relocation of the open tie switches, the auto-drawing algorithm based on the connection between the sections and the switches is an essential technique. This paper proposes a new auto-drawing algorithm for a single line diagram of distribution systems based on tertiary tree and collision avoidance method. The feasibility of the proposed algorithm has been testified for various cases using practical distribution system with 12 feeders.

• 한국정밀공학회지
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• 제28권3호
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• pp.377-382
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• 2011

Up to now, process design of multistage profile drawing from initial round material is performed through trial-and-error based on experience of industrial experts. This means the increase in production cost and excessive time consuming. In this study, process design program was developed for multistage profile drawing from initial round material. The program was made using VisualLISP. Therefore, the program can be operated by AutoCAD program. In order to verify the effectiveness of the program, two stage profile drawing process for producing heavy duty guide rail was design by using the program. In addition FE analysis and profile drawing experiment were performed. As a result, the program can be used in order to design profile drawing process design.

• 한국정밀공학회지
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• 제25권12호
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• pp.55-64
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• 2008

This paper describes a research work of developing an automated progressive design system for manufacturing the product with multi processes such as piercing, bending, and deep drawing. An approach to the system for progressive working is based on the knowledge-based rules. Knowledge for the system is formulated from plasticity theories, experimental results and the empirical knowledge of field experts. The system consists of three main modules, which are shape treatment, strip layout, and die layout modules. Based on knowledge-based rules, the system is designed considering several factors, such as material and thickness of a product, piercing, bending and deep drawing sequence, and the complexities of the blank geometry and punch profiles. It generates the strip layout drawing for an automobile product. Die design for each process is carried out through the die layout module from the results of the strip layout module. Results obtained using the modules enable the designers for manufacturing products with multi processes to be more efficient in this field.

• 한국컴퓨터정보학회논문지
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• 제19권2호
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• pp.125-132
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• 2014

본 논문에서는 저가의 웹 카메라를 사용하여 마커 없이 손끝과 붓을 트래킹 하는 시스템을 제시한다. 트래킹 시스템은 CUDA를 사용하여 병렬처리를 적용했다. 이 트래킹 시스템은 노트북이나 데스크탑과 같은 환경에서 수행이 가능하고, 실시간 애플리케이션에 사용 가능한 성능을 가진다. 또한 본 논문에서는 사적인 수성 사인펜 드로잉 모델을 제시하고 구현된 결과를 보여준다. 제안하는 시스템은 손끝과 붓을 트래킹 하는 저가의 실시간 트래킹 시스템으로 사실적 드로잉 애플리케이션과 연동하여 미래 최첨단 교육 환경 구축의 테스트베드로의 활용을 기대한다.

• 한국정밀공학회지
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• 제15권11호
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• pp.46-57
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• 1998

Even though there are some studies on the deep drawing process and process planning, little study has been done on the methodology of process planning of secondary operations of deep drawing such as 'piercins'. In this paper, first, we systematized the methodology of the process planning of secondary operations on axisymmetric cup. Second we described the development of the expert system for their CAPP For these studies, we extracted the knowledge of their process planning from experts and analysed and systemized them. To develop the expert system, rule-based reasoning paradigm is used. The shape information of manufacturing features of secondary operations are manually input to the system through SUI. The process planning results are automatically connected to AutoCAD. We believe that the systematized process knowledge and the development of the expert system for its CAPP could give lots of aids to the associated field.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2009년도 춘계 종합학술대회 논문집
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• pp.146-151
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• 2009

현대 설치 예술 분야에서 피지컬 컴퓨팅(physical computing)을 이용한 작품의 사례가 많아지고 있다. 하지만 인터랙션(interaction)을 위한 로봇 사용이 아닌 인터페이스(interface)가 장착된 드로잉(drawing)의 도구로 로봇을 사용하여 작업한 예는 쉽게 찾아 볼 수가 없다. 본 논문에서는 사용자와 통신할 수 있는 드로잉 작업용 시스템 설계와 개발 과정에 대해 언급하고자 한다. 작업 환경을 구성하는 로봇으로는 레고(Lego) 사(社)에서 나온 마인드스톰(Mindstorm) 지능형 로봇 NXT 시스템을 이용하였고, 현실에서의 실제 드로잉 환경과 이를 예측하여 운동을 시뮬레이트(simulate)하는 가상 환경으로 구분하였다. 실제 환경에서 드로잉을 하기 위하여 NXT 시스템을 제어할 수 있도록 하는 아이커맨드(Icommand) 라이브러리(library)를 이용하였고, 가상 환경을 표현하기 위하여 이미지 표현이 쉬운 프로세싱(processing) 라이브러리를 이용하였다. 라인(line) 드로잉을 위하여 벡터(vector) 방식 SVG(Scalable Vector Graphics) 파일을 기반으로 이미지 정보를 얻어 표현하였다. 이 시스템은 블루투스(bluetooth) 연동으로 실시간 통신이 가능하여 사용자의 요구에 따라 원하는 이미지를 만들어 낼 수 있다. 이러한 모습은 이미지의 결과에 그치는 것이 아니라 드로잉을 하는 과정에서 하나의 퍼포먼스(performance)로 작용할 수가 있다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1996년도 추계학술대회 논문집
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• pp.593-597
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• 1996

This paper describes a method for drawing check of dimension errors, such as deficiency and redundancy of dimensions, input-errors in dimension figures and symbols, etc. The logic for finding dimensional errors is written by using the Turbo C language. Checking for deficiency and redundancy of global dimensions has been performed applying Graph Theory. Especialy, this paper gives an account of checking method for annular parts.