Journal of Korean Society for Quality Management (품질경영학회지)

Korean Society for Quality Management (한국품질경영학회)
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Taguchi-based robust design for the footwear outsole pelletizing machine cutter

다구찌 방법을 이용한 신발 아웃솔 펠레타이징 기계 절단부의 강건설계

  • Kwon, Oh-Hun (Pukyoung National University Graduate School of Management of Technology) ;
  • Koo, Pyung-Hoi (Pukyong National University Division of Systems Management and Engineering) ;
  • Kwon, Hyuck-Moo (Pukyong National University Division of Systems Management and Engineering)
  • 권오훈 (부경대학교 기술경영전문대학원) ;
  • 구평회 (부경대학교 시스템경영공학부) ;
  • 권혁무 (부경대학교 시스템경영공학부)
  • Received : 2016.10.04
  • Accepted : 2016.12.01
  • Published : 2016.12.31
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Abstract

Purpose: This study attempts to find out the optimum condition of the rotary cutter making pellet in the footwear outsole process. The pellets are used in the process of outsole rubber fabrication to reduce cycle time and save raw material. Methods: Computer simulations are used to analyze the maximum stress in the rotary cutter after designing a variety of cutter shapes. Taguchi method is used to identify the robust condition of the cutter. In $L_{18}$ orthogonal array, the control factors such as knife width, twisted angle, number of knives, diameter, knife depth and supported angle are considered and noise factors like assembly tolerance and amount of antifriction are allocated. Results: It is found that the most important factors to reduce maximum stress in the cutter are supported angle and diameter. Using Tacuchi's results, we can reduce 70% cycle time and 9% raw material compared to the traditional method using cutting die. Conclusion: When designing the rotary cutter, the best conditions are the diameter at its maximum allowable value and supported angle in the boundary of machine inner space.

Keywords

References

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