• Title/Summary/Keyword: 2D CAD Drawing

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A Development of Offshore plant Piping Process Monitoring System Based on 3D CAD Model (3D CAD 모델 기반 해양플랜트 배관 공정 모니터링 시스템 개발)

  • Kim, Hyun-Cheol;Lee, Gyu-Hong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.2
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    • pp.58-65
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    • 2020
  • 3D Models of offshore plant piping materials designed by 3D CAD systems are provided to the production processes in the form of 2D piping drawings and 2D piping installation drawings. In addition to the standard engineering information, the purchasing, procurement, manufacturing, installation, and inspection of raw materials are managed systematically in an integrated process control system. The existing integrated process management system can help reduce the processing time by managing the flow and progress of resources systematically, but it does not include 3D design model information. Hence, it is difficult to understand complicated pipe structures before installing the pipe. In addition, when design changes or immediate design modifications are required, it is difficult to find related data or exchange information quickly with each other. To solve this problem, an offshore plant-piping process-monitoring system was developed based on a 3D model. The 3D model-based piping monitoring system is based on Visual Studio 2017 C# and UNITY3D so that the piping-process work information can be linked to the 3D CAD model in real time. In addition, the 3D model could check the progress of the pipe installation process, such as block, size, and material, and the progress of functional inspection items, such as cleaning, hydraulic inspection, and pneumatic inspection.

Automatic conversion of design drawing for CAD/CAM integration (CAD/CAM 통합을 위한 설계도면의 자동변환)

  • 김호룡;김양경
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.12 no.3
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    • pp.466-472
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    • 1988
  • An algorithm and its computer program were developed for the computer aided automatic conversion from 2-D design drawing, which includes arbitrary curves, to a 3-D object, and the 3-D object obtained from the developed program was used to generate the tool path of NC milling machine. The algorithm and its computer program developed were applied to several real objects for their feasibility check and showed satisfactory results. Therefore, it was proved that the algorithm and its program developed can be applied to the CAM for the mechanical parts having arbitraily curved shapes by automatically generating its 3-D object. As a result of this study a basic theory for the integration of CAD/CAM was established which will prompt the improved quality and productivity.

A Study on the Automatic Design Supporting for Automobile Bonnet Tools (자동차 보닛금형의 자동설계 지원시스템에 관한 연구)

  • 정효상
    • Journal of the Korean Society for Precision Engineering
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    • v.21 no.5
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    • pp.131-141
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    • 2004
  • In this study a 3-D automatic die design supporting system for a bonnet panel has been developed using Pro/ROGRAM of the widespread CAD software Pro/ENGINEER A standard drawing die was defined in terms of the punch profile, the die face geometry, and the blank sheet size. The strip layout of a trimming die was defined, in addition, in terms of the trimming line and the locations of scrap cutters. Necessary relations for each design step are formulated and rules for bottom-up type 3-D die design were set up for the automatic design of drawing and trimming dies of a bonnet. With the input geometric data of punch profile, die face, and blank sheet, this 3-D design supporting system could complete the basic design process, in case of the bonnet drawing die, in a time 78% shorter than that required by a typical 2-D CAD system. The new design system showed remarkable design efficiency also when it was applied to the case of redesign and modification of the previous standard output for a different car type.

A Study on the Development of Computer-Aided Process Planning System for the Deep Drawing & Ironing of High Pressure Gas Cylinder (고압가스 용기를 위한 Deep Drawing & Ironing(D.D.I.) 공정설계 시스템 개발에 관한 연구)

  • Yoon, Ji-Hun;Jeong, Sung-Yuen;Choi, Young;Kim, Chul;Choi, Jae-Chan
    • Journal of the Korean Society for Precision Engineering
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    • v.19 no.2
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    • pp.177-186
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    • 2002
  • This paper describes a research work on the development of computer-aided design system far the deep drawing & ironing of high pressure gas cylinder. An approach to the design system is based on the knowledge-based rules. Knowledge for the system is formulated from plasticity theories, handbook, experimental results and the empirical knowledge of field experts. This system has been written in AutoLISP on the AutoCAD Rl4.0 using personal computer. This system is composed of three modules which are input. process design and drawing.

CAD system for 3D modeling using engineering drawings (도면을 이용한 3D 모델링 CAD 시스템)

  • 이창조;김창헌;황종선
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 1995.04a
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    • pp.891-895
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    • 1995
  • This paper describes a solid modeling system based on a systematic description of techniques for analyzing and understanding on engineering drawings. Main stress is placed on clarifying the difference between the drawing understanding and the drawing recognition. The former, in which we feel major interest, is intrinsically a difficult problem because it inherent contains combinatorial search to require more than polynomial time. Actually, understanding drawings is regarded as a process to recover the information lost in projection 3-D objects to 2-D drawings. But, solid modeling by automatic understanding of the given drawings is one of the promising approach, which is described precisely in the text. Reviewing the studies performed so far, we summarize the future direction of the project and inevitable open problems left.

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Establishment Strategy of 3D Spatial Information from 2D Facility Drawing Related to Fire Fighting (2차원 소방대상 시설물도면의 3차원 공간정보 구축방안)

  • Lee, Yun;Kim, In-Hyun;Choi, Yun-Soo;Oh, Kyu-Shik
    • Spatial Information Research
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    • v.18 no.5
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    • pp.47-54
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    • 2010
  • Until recently, GIS technology was mainly based on 2D for disaster management. Necessity of 3D spatial information came to the fore with a speedy and accurate response system in disaster management. However, most fire-fighting facilities presently use CAD with 2D formation, Image drawings, and conception of construction data's formation. It is not about the drawings in map production. It's about varieties of construction ways or contents. In this study, we are proposing the ways on analyzing the existing disaster management targets for 2D technology drawings, designing the 3D spatial information data model, and transforming the effective 3D spatial information into algorithm and dimension spatial information construction for easily building on mass 2D architectural drawings to 3D spatial information effectively in disaster management. We can maxim ize efficient construction time and expenses. Then what is proposed in this study about constructing 3D spatial information for manual work, and it's significance for improving decisive decisions and utilizing the tasks to prevent, prepare, respond and restore steps in disaster management.

Survey on CAD Softwares Used in Small Contractors and Improvement to College CAD Education (중소규모 건설회사 CAD 활용현황과 대학교육 방안)

  • Choi, Heebok;Jang, Myung-Houn
    • Journal of the Korea Institute of Building Construction
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    • v.16 no.2
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    • pp.169-175
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    • 2016
  • A survey of small-size contractors in Jeju was conducted to investigate college graduate's CAD (computer aided design) competence. Most of small-size contractors use CAD softwares to review and update drawings submitted from an architect. This research analyzed the curriculum of the architectural engineering in several national universities. The CAD classes have 4 or 6 hours per week and use AutoCAD primarily. This research proposes that a CAD class needs at least 6 hours per week, 2D drawing is the main theme in the curriculum, and exercises to make 3D models are also included in the CAD class. The improved methods, Internet cafe and real time feedbacks using a smartphone, to evaluate the reports and exercise results are necessary.

Development of Automatic Drawing Program for Hemming Unit by AutoCAD (AutoCAD를 이용한 자동차용 헤밍 유닛의 자동작도 프로그램 개발)

  • Kim, D.S.;Song, Y.J.;Chung, H.;Kim, Y.B.;Hahn, Y.H.
    • Transactions of Materials Processing
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    • v.16 no.3 s.93
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    • pp.163-171
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    • 2007
  • Due to the complicated character of the hemming process for automobile panels, it is very difficult to setup a consistent and reliable die design guide rule that require subtle decision of experienced experts and multiple trials during hemming die design and making. In this paper an automatic die design system of hemming units is pursued by presenting some algorithms, in which geometric data and constraints of the hemming units were converted to formula. The geometries and kinematics of all part for two kinds of hemming units, 2-link type and 4-link type were analysed kinematically to build the design algorithm. The algorithms were verified by automatic drawing used AutoCAD VBA program in example for the hemming unit design of a bonnet.

A study on the Analysis of Building Information Modeling Factors of Construction Firms Using an Analytic Hierarchy Process (계층분석법을 이용한 BIM(Building Information Modeling)이 건설사에 미치는 영향요인 분석에 관한 연구)

  • Shim, Jin Kyu;Yi, Hye In;Kim, Jae Jun
    • KIEAE Journal
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    • v.10 no.4
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    • pp.123-130
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    • 2010
  • A lot of construction companies in overseas markets of construction try to change 2D CAD to 3D CAD for improving business ability and change to Building Information Modeling(BIM) for integrating information produced from construction life cycle. In America, GSA(General Service Administration) requires a design drawing planed by BIM and in Singapore and Europe, the government encourages architectures to use this tool. Recently in the domestic market, many organizations related construction industry are aware of importance of 3D CAD integrated information, and try to use BIM. Therefore, this research would analyze how does BIM affect construction industry and derive influence factors and provide basic data for using BIM.

Design and Implementation of a Framework for Collaboration Systems in the Shipbuilding and Marine Industry (조선해양 설계분야에서 협업시스템을 위한 프레임워크의 설계 및 구현)

  • Yun, Moon-Kyeong;Kim, Hyun-Ju;Park, Min-Gil;Han, Myeong-Ki;Kim, Wan-Kyoo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.05a
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    • pp.270-273
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    • 2015
  • In shipbuilding and marine industry, engineering and design software solutions have upgraded from the original 2D schematic data based CAD system to a modern 3D drawing-based system. Due to the fact that the massive amount of data usage in real time and data volumes of various engineering models including graphic data have increased, several problems such as lack of server resources and improper handling of 3D drawings have been raised. Besides, increasing the number of session connections per server can cause deterioration of server performance. Recently, increasing the yard's sophisticated design capabilities highlighted the need to develop engineering and design system which would not only overcome the network performance issues, but would provide efficient collaborative design environment. This paper presents an overview of the framework for collaborative engineering design system based on the virtual application (Citrix XenApp 6.5)and acceleration hardware technology of 3D graphics (NVIDIA GRID K2 solution).

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