• Title, Summary, Keyword: 제트엔진 압축기 케이스

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A Fast Generation Method of CAM Model for Machining of Jet Engines Using Shape Search (형상 검색을 이용한 제트엔진 절삭가공을 위한 빠른 CAM 모델 생성 방법)

  • Kim, Byung Chul;Song, Ilhwan;Shin, Suchul
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.40 no.3
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    • pp.327-336
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    • 2016
  • Manufacturers of aircraft engines have introduced computer-aided manufacturing (CAM) software to operate and control computerized numerical control (CNC) machine tools. However, the generation of a CAM model is a time consuming and error-prone task since machining procedure and operational details are manually defined. For the automatic generation of a CAM model, feature recognition techniques have been widely studied. However, their recognition coverage is limited so that complex shapes such as a jet engine cannot be fully developed. This study presents a novel approach to quickly generate a CAM model from a CAD model using shape search techniques. Once an operator sets a machining operation as a reference operation, the same shapes as the shapes referenced by the operation are searched. The reference operation is copied to the positions of the searched shapes. The proposed method was verified through experiments with a jet engine compressor case.

Automatic Generation of CAM Model for Machining Holes for Jet Engine Compressor Case Based on Feature Recognition (제트엔진 압축기 케이스의 구멍 가공을 위한 특징형상 인식 기반의 CAM 모델 자동생성)

  • Kim, Byung Chul;Song, Ilhwan
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.39 no.3
    • /
    • pp.337-345
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    • 2015
  • High machining technology is needed for manufacturing jet engines for use in aircrafts. To reduce errors in the jet engine machining process, the machining companies of aircraft engines have introduced the CAM (computer-aided manufacturing) technology. However, to create a CAM model, the operator must manually conduct machining operations based on a CAD (computer-aided design) model, which can take several days or weeks. To solve this problem, this study proposes a method for automatically generating a CAM model for machining holes in the parts, using a CAD model. In this method, the features of the hole are recognized from the CAD model and translated into machining operations to be used with the CATIA program. Additionally, a prototype system was implemented and the proposed method was experimentally verified.