• 제어로봇시스템학회:학술대회논문집
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• 1986.10a
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• pp.443-447
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• 1986

오늘날 제조업에 있어서는 시장의 다양화, 원가절감 및 리드타임의 단축이라는 대내외적 요구에 부응할 수 있는 기술 생산체재의 확립이 요구되고 있다. 이에 따라 설계 및 기술변경(Engineering Change)에따른 원가상승을 막기 위해 CAE(Computer aided engineering), CAD(Computer aided design)의 도입을 서두르게 되었고 CAD데이타의 효율적 이용에 의한 가공 및 생산적 측면에서 CAM(Computer aided manufacturing)의 도입도 검토하게 되었다. 본 논문은 이러한 개념의 발상동기와 이를 뒷받침하기 위한 한국 아이 비 엠이서 제공하는 하드웨어 및 소프트웨어를 소개하고 공장자동화를 위한 기술 생산 통합시스템의 구축이라는 측면에서 아이 비 엠이 추구하는 방향을 검토하고 있다.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 1994.06a
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• pp.129-146
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• 1994

• Korean Journal of Computational Design and Engineering
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• v.12 no.1
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• pp.50-57
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• 2007

In recent years, many robotics researches have been focused on developing human-friendly robots, that is, humanoid biped robots. The researches of humanoid robots include various areas such as hardware development, control of biped locomotion, artificial intelligence, human interaction, etc. The present work concerns the hardware development of a mid-size humanoid robot, BONOBO, focusing on rapid development of outer body parts with integrated application if CAD/CAM/CAE/RP. Most parts are three-dimensionally designed using 3D CAD, and effectively connected with CAE analyses using both kinematic simulation and structural analysis. In order to reduce lead time and investment cost for parts developments, Rapid Prototyping (RP) and CAM are selectively utilized for manufacturing body parts. These master parts are then replicated using the vacuum casting process, from which we can obtain plastic parts repeatedly. Through this integrated approach, the first prototype of BONOBO can be successfully developed with relatively low time and investment costs.

• CDE review
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• v.4 no.2
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• pp.36-41
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• 1998

To survive in the intensive world wide automotive market, more and more automotive companies are investing their resources into concurrent engineering systems (CE) based on the combined CAD/CAM/CAE/ PDM technology. The main objectives of CE in automotive companies are the quality improvement of products and the reduction of cost and time to market. Remarkable effects are appearing from some of these companies. As shown in this paper, these successful automotive companies have been focusing on establishing the new process and methodology in applying CE into their car development process.

• Proceedings of the KIEE Conference
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• 1994.11a
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• pp.130-132
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• 1994

Recently, a Deflection Yoke(DY) is designed in the bobbin-seperator-coil-winding type for high-definite CRT and high-efficient DY of wide vision TV or High Definite TV. This paper presents an optimization or bobbin-seperator-coil-winding type yoke's coil distribution for minimizing gap between desired and practical deflections of electron beams using by Evolution Strategy.

• International Journal of Automotive Technology
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• v.3 no.2
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• pp.47-52
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• 2002

The integration of CAD/CAM/CAE in product development is the key to realize concurrent engineering. Generally, different systems are employed in product development departments. These different systems create a lot of trout)toes such as difficulty in communication, misunderstanding and so on. A new approach to integrate CAD/CAM/CAE in one system based on CATIA thor the end-to-end process in cylinder head development is presented. Hulti Model Technology (MMT) is used to create consistent and associated CAD models for the end-to-end process in cylinder head development. The concept and method to create and organize multi models are discussed. A typical four-layer structure of HHT for mechanical products is defined. The multi level structure of the cylinder head models based on MMT is provided. The CAD models of cylinder head created based on MMT can be used as the consistent model. All models in the downstream of cylinder head development such as structure analysis, CFD, sand core design , casting simulation and so oil are associated with the CAD models. Practice shows the approach in this paper enables the development process to be carried concurrently and can obviously shorten time to the market, reduce product cost and improve product quality.

• Journal of the KSME
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• v.33 no.4
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• pp.330-342
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• 1993

CAD/CAM이 국내에 도입되기 시작한 것은 70년대 후반이나, 본격적으로 보급되어 사용되기 시작한 것은 80년대 초부터라 하겠다. 도입초기에는 설계의 획기적인 변화를 약속해주는 새로운 기술로 각광을 받아오고, 또한 몇몇 분야에서는 그만한 가능성을 보여주기도 하였으나, 설계실 에서 컴퓨터가 제도판을 밀어내기 시작한지 약 10년이 지난 이 시점에서 돌이켜보건대 과연 CAD/CAM이 초기의 커다란 기대에 부응하는 성과를 올리고 있는 가에는 의문이 가는 것도 부 인할 수 없는 사실이다. 이는, 여러 가지 해석이 있을 수 있겠으나 필자의 견해로는 다음의 4가 지에 주로 기인한다. 1) CAD/CAM시스템 자체의 기능 및 성능 부족 2) 이기종 시스템간의 인터페이스 기술의 부족 3) 산업현장의 설계표준, 정보관리체계 등의 기반환경 미비 4) 적용 대상에의 전용화(customizing)기술의 부족 이 글에서는 이러한 원인들의 부분적인 해결을 위해서 필자가 속해있는 회사에서 수행한 노력 들을 몇 가지 사례를 통하여 소개하고자 한다.

• Journal of the Korean Society for Precision Engineering
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• v.11 no.2
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• pp.5-16
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• 1994

NC 공작기계가 생산현장에 도입된 이래 이를 Computer와 연결함으로써 CAD/CAM/CAE의 결합이 실현되어가고 있다. 최근에는 CAD/CAM/CAE와 더불어 생산공정에 있었서 여러 대의 NC공작기계, 로보트, 운송장치를 결합하고 공구관리나 생산관리까지도 Computer를 이용하고자 하는 소위 CIM(Computer Intergrated Manufacturing)시스템에 관한 연구가 활발히 진행되고 있으며 여기에 생산가공 시스템의 상태 변화량의 감지를 통하여 공정상태를 종합적으로 감시, 진단할 수 있는 시스템(M & D : Monitoring and Diagnosis)에 대한 필요성도 증대되고 있다. 이는 생산 공정에 있어서의 궁극적 과제인 생산 자동화 혹은 무인 자동화의 가능성을 한층 높여준다.

• Journal of Multimedia Information System
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• v.2 no.3
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• pp.255-262
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• 2015

The modern manufacturing systems and technologies produce products that are more accurate day by day. This can be reached mainly by improvement the manufacturing process with at the same time restricting more and more the quality specifications and reducing the uncertainty in part. The main objective an industry becomes to lower the part's variability, since the less variability - the better is product. One of the part of this task is measuring the object's uncertainty. The main purpose of this study is to understand the application of bootstrap method for uncertainty evaluation. Bootstrap method is a collection of sample re-use techniques designed to estimate standard errors and confidence intervals. In the case study a surface of an automobile engine block - (Top view side) is measured by Coordinate Measuring Machine (CMM) and analyzed for uncertainty using Geometric Least Squares in complex with bootstrap method. The designed experiment is composed by three similar measurements (the same features in unique reference system), but with different points (5, 10, 20) concentration at each level. Then each cloud of points was independently analyzed by means of non-linear Least Squares, after estimated results have been reported. A MatLAB software tool used to generate new samples using bootstrap function. The results of the designed experiment are summarized and show that the bootstrap method provides the possibility to evaluate the uncertainty without repeating the Coordinate Measuring Machine (CMM) measurements many times, i.e. potentially can reduce the measuring time.

• CDE review
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• v.18 no.2
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• pp.21-25
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• 2012