• 제목/요약/키워드: Diaphragm Forming Unit

검색결과 3건 처리시간 0.014초

고속 생산형 필름 진동판 성형기 및 금형 국산화 개발(I) - 단수 생산 진동판 성형기 - (Domestic Development of Vibrational Film Forming Machine and Die and Mold in the High Speed Production(I) - Single production forming machine -)

  • 김정현
    • 한국기계가공학회지
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    • 제11권6호
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    • pp.9-15
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    • 2012
  • Vibrational film has been more employed in ear-phones or small type of speakers along with a wide use of portable multi-media equipments such as MP3 and MP4. However, the current hand work production process of diaphragms is inefficient. In this study, a die-and-mold and a single production forming machine are developed, and they result in a multi-production forming machine. The multi-production forming machine consists primarily of a film feeding unit and an unwinding unit. A vacuum suction device provides the film feeding unit, while the unwinding unit is obtained using an appropriate damper. The advantage of the developed single production forming machine is shown according to a proper voice test.

수소압축기용 벨로우즈 다이아프램의 우레탄 금형 전단공정 연구 (A Study on Urethane Pad Blanking Process of Bellows Diaphragm for Hydrogen Compressor)

  • 김용관;박훈재;김강은;홍명표;강경필;이경훈
    • 소성∙가공
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    • 제33권1호
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    • pp.5-11
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    • 2024
  • The development of a next-generation hydrogen compressor, a key component in the expansion of hydrogen charging infrastructure, is in progress. In order to improve compression efficiency and durability, it is important to optimize the precision forming and shearing processes of the diaphragm, which is the bellows unit cell, as well as the optimization of diaphragm shape itself. In this study, we aim to show that die and process design technology that can synchronize the inner and outer shearing points of the diaphragm for the precision forming of product can be constructed based on a numerical simulation. First, the damage model that can predict the fracture points will be determined using the shear load and shear zone measurements obtained by performing a blanking test of AISI-633 stainless steel. Next, we will explain the overall procedure based on numerical analysis model how to determine the shearing points according to the deformation pattern of urethane die for various shearing die design.

에너지법에 의한 직사각형 격막의 정수압벌징 해석 (Analysis of Hydrostatic Bulging of a Rectangular Diaphragm by Using the Energy Method)

  • 양동열;이항수
    • 대한기계학회논문집
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    • 제16권4호
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    • pp.684-695
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    • 1992
  • 본 연구에서는 3차원 형상의 금형에 의한 박판금속 성형 공정을 에너지법으로 해석함에 있어 스윕곡면(SWeep surface)을 통해 기하학적 형상을 효과적으로 표현하는 방법을 제안하고, 이를 직사각형 격막의 정수압벌징의 해석에 으용하여 이에 의한 결 과를 이미 보고된 자료와 비교함으로써 일반적인 박판 성형공정을 해석하는데 본 이론 의 적용 가능성에 대하여 논의하고자 한다.