Abstract

In order to invstigate the influence of die design variables on the quality of the sheared surface in cutting of sandwich sheet metals, the cut-off operation is carried out, which is the typical shearing process in sheet metal forming technology. For experiments we made the cut-off die which can be easily adjusted for die design variables such as blankholding force, pad force and clearance. The sandwich sheet metals considered are clad304(STS304-Al1050-STS304) and anti-vibration sheet metal. The shearing process is visualized by the computer vision system installed in front of the cut-off die and the sheared surface is measured and quantitatively compared with the help of the optical microscope after cut-off operation. From test results it is shown that the shearing mechanisms are different according the material of which sandwitch sheet metal is composed. The influence of die design variable is explored and we found optimal conditions for both sandwich sheet metals. It is expected that this investigation can be utilized to get the better sheared surface.

주제어

#Clad Sheet Metal   #Anti-vibration Sheet Metal   #Clearance   #Blankholding Force   #Pad Force   #Sheared Surface   #Die Design Variables   #Cut-off Die  

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이 논문을 인용한 문헌 (5)

1. Kim J. Y. ; Chung W. J. ; Yang D. Y. ; Kim J. H. 2005. "A Study on the Shear Deformation Behavior of Inner Structure-Bonded Sheet Metal" 소성가공 = Transactions of materials processing : Journal of the Korean society for technology of plastics, 14(3): 257~262  원문보기 상세보기
2. Seong D. Y. ; Jung C. G. ; Yoon S. J. ; Yang D. Y. 2005. "Efficient Methods of Prediction Incorporating Equivalent Models for Elasto-Plastic Bending Behavior of Metallic Sandwich Plates with Inner Dimpled Shell Structure" 소성가공 = Transactions of materials processing : Journal of the Korean society for technology of plastics, 14(8): 718~724  원문보기 상세보기
3. Seong, D.Y. ; Jung, C.G. ; Yoon, S.J. ; Shim, D.S. ; Lee, S.H. ; Ahn, D.G. ; Yang, D.Y. 2006. "The Development of Inner Structure of Metallic Sandwich Plates for Bending" 소성가공 = Transactions of materials processing : Journal of the Korean society for technology of plastics, 15(2): 126~131  원문보기 상세보기
4. Yoo, D.J. 2007. "Rapid Die Surface Modification for Sheet Metal Forming" 소성가공 = Transactions of materials processing : Journal of the Korean society for technology of plastics, 16(7): 538~548  원문보기 상세보기
5. Jang, M.J. ; Choi, H.S. ; Lee, S.H. ; Kim, D.S. ; Lee, S.G. ; Ko, D.C. ; Kim, B.M. 2011. "Design of Half Blanking Process for Reducing Rollover and Stress Acting on Tools in Forming of Lower Tooth" 소성가공 = Transactions of materials processing : Journal of the Korean society for technology of plastics, 20(3): 214~221  원문보기 상세보기