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RISS 인기검색어
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- 저자 : 池海成 (검색결과 103 건)
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池海成,鄭海鎔 弘益大學校 科學技術硏究所 2000 科學技術硏究論文集 Vol.11 No.-
Rapid prototyping (RP) technologies have an ability of creating a physical part directly from its computer model by adding material on a layer by layer basis. Since actual production of a physical model using traditional techniques has been quite expensive, a prototyping apparatus like Stereolithography can recently be used to get physical verification of a product design rapid and economic. In spite of this tremendous progress in fabrication, many problems remain unsolved including several geometric issues that must be resolved in coming years before these technologies are in common use. The biggest problem lies in their standard file format for CAD data exchange. Current method using the de facto industry standard STL data format have at times resulted in problems such as accuracy, redundancy, and integrity in its representing CAD models. In this paper, a general explanation about why a next generation of data exchange standard for RP technologies is needed, why it must be based on a solid model, and what its major advantages are given.
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지해성 한국공학교육학회 2013 공학교육연구 Vol.16 No.3
The paper addresses an issue of industry-joint engineering education paradigm with the purpose of setting a new standard for engineering education by development and support of competitive curriculum for the interdisciplinary team-based product development, a specialized and innovative engineering education program. In the department of MSDE(Mechanical and System Design Engineering), students are educated via three major courses for targeting engineering design, Creative Engineering Design (freshman), Design Process (Senior), and Creative Product Development (Junior). All these courses are based on personal tool exercises for design software and hardware and team-project group activities of the students with other team members. This paper will briefly discuss the main focuses of these courses and case studies of the teaching results targeting the development of telecommunication device.
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池海成,蘇一鎬 弘益大學校 科學技術硏究所 2002 科學技術硏究論文集 Vol.13 No.-
The activities for the development of STEP-NC, a new STEP-compliant data model for the NC controllers, have been started since 1998, and recent tests showed that the new process chain allows savings of about 20% of total machining cost. The primary goal of the paper is to develop a 'data model', which can be a foundation for the exchange of product data in rapid prototyping(RP) as the one among STEP-NC modules. User requirements have been collected and analyzed in order to formulate a basis for the RP data model that is expected to be a functional model for estimating time and cost for part fabrication.
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신속성형기술 전용 형상 모델링 기술 개발-표면 미세돌기의 설계
池海成 弘益大學校 科學技術硏究所 1998 科學技術硏究論文集 Vol.9 No.1
This paper presents a geometrical modeling technique including an energy method for defining a regular texture field made by an RP apparatus. The texture field is supposed to be made from both a parametric surface and a non-analytic STL CAD model using an energy minimization analogy based on energy constraints. Designing surface texture for rapid prototyping, however, is difficult due to complex macro-structure of the tiny texture geometry that must be compatible with the non-traditional manufacturing method of rapid prototyping. An application of geometric modeling techniques to development of a computer-aided design tool for solving the addressed problems is proposed in this paper. Manufacturing constraints are identified, formulated, and introduced into a unified design constraints framework being incorporated into the design of a texture cell. Also, an energy minimizing parametric geometry is devised and implemented to create an optimal texture geometry.
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신속조형기술(RP: Rapid Prototyping) 분야소개
지해성 한국CDE학회 1997 한국CAD/CAM학회학회지 Vol.3 No.2
최근 몇년간 CAD/CAM 분야에서 활동하시는 많은 분들이 'RP'라는 신기술의 등장과 발전과정을 다분히 생경스러운 심정으로 지켜봐 왔을 것으로 생각된다. 주지하다시피 'RP 즉 Rapid Prototyping'은 '컴퓨터에 저장된 3차원 형상모델의 기하학적 자료로부터 그 물리적인 모형형상을 신속하게 조형해 내는 것'으로 주어진 설계 제품의 수학적 모델을 그 이전에 존재하였던 그 어떤 가공방식과도 비교할 수 없는 빠른 시간안에(통상 24시간 이내) 물리적인 모형으로 재현해 낸다는 것이 그 대표적인 장점이라고 하겠다. 우리말로는 '신속조형기술'이라고 명명할 수 있는 이 기술은 설계된 제품 형상의 기하학적인 복잡성이나 반복성에 전혀 구애받지 않고 그 어떤 제품형상도 조형이 가능하다. 물론 초기에 이 기계장치의 발명목적은 'RP'라는 용어가 시사하듯이 컴퓨터나 수작업에 의해 설계된 제품형상을 신속하게 관능(시각 및 촉각) 감각을 통해서 관찰하고 그에 따른 형상설계의 내용을 검증하기 위함이었다. 그러나 이 기술이 최근 그 발전의 행보를 빨리함에 따라 기존에는 상상할 수도 없었던 복잡한 제품 형상의 신속한 모형제작은 물론 가까운 장래에는 이의 주물성형을 위한 주형의 제작이나 플라스틱 사출성형용 금형제작(신속 주형/금형 제작-RT: Rapid Tooling 이라고 호칭)까지도 신속하게 수행해낼 것으로 기대된다.
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Software supports and E-manufacturing for DMT process
지해성,Jeonghun Suh 대한기계학회 2013 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.27 No.10
The working principle of the laser-aided direct metal tooling(DMT) process is the use of a laser to selectively clad metallic powder on the substrate material part. A high-powered laser beam is focused on a metal substrate to create a molten weld pool; as the laser passes by the deposit is quickly cooled, leaving behind a thin line of metal clad. The major advantage of the DMT process is its capability of depositing a multitude of materials. Since the material deposition relies only on the feeding of a powder, it is relatively simple to use multiple kinds of materials. In fact, recent research has shown that DMT is capable of manufacturing binary functionally graded materials as well. The study is to develop a software support tool, visual simulation technique, as one of the e-manufacturing capability established for a unique DMT process.
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내구강도와 중량을 고려한 인 라인 스케이트 프레임의 설계 해석
池海成,李東烈 弘益大學校 科學技術硏究所 2004 科學技術硏究論文集 Vol.15 No.-
In-line skate generally consists of four major parts: boot, frame, bearing and wheel, and the most important part among those for necessary functionality is the frame. It is the most expensive, and it also makes a decisive role in practical race skating. The functional behavior of a frame is greatly affected by external dynamic forces as well as the static weight of a skater. We are proposing a new inline speed-skating frame design that has been improved in structural strength and weight for providing optimum speed in 20-40km marathon skating.
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