Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Progressive Process Design of Integrated Part for Mobile Phone

모바일 폰용 일체형 부품의 프로그레시브 성형공정 설계

  • 장명진 (부산대학교 대학원 정밀가공시스템) ;
  • 김강현 (부산대학교 대학원 정밀가공시스템) ;
  • 이찬주 (부산대학교 대학원 정밀가공시스템) ;
  • 김병민 (부산대학교 대학원 정밀가공시스템) ;
  • 이선봉 (계명대학교 기계자동차공학부) ;
  • 고대철 (부산대학교 ILIC)
  • Received : 2010.10.29
  • Accepted : 2011.01.05
  • Published : 2011.04.01
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Abstract

The purpose of this work is to develop of a press forming process for mobile phone battery cover as an alternative to the current manufacturing process by laser welding. This press forming process consists of a combination of bending, side pressing and side bending operations. The dimensional error for each process was investigated by finite element(FE) analysis and the Taguchi optimization method. The spreading of the cover width in the side pressing process was adjusted by modifying the blank shape with a notch. The over-bending method was adopted to compensate the spring-back which occurs after bending. Forming experiments were performed to verify the reliability of the developed press forming process. In addition, the strength of the product was evaluated to verify the suitability of the battery cover manufactured with this new press forming process. The results of the forming experiments indicate that the dimensional accuracy of the battery cover is within the required tolerance. The strength of the battery cover was evaluated to 547N which is larger than required strength of 400N.

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References

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