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논문 상세정보

점진적 롤 성형 공정에서 공정 변수가 박판 금속의 곡률 생성에 미치는 영향

An Effect of Process Parameters on the Generation of Sheet Metal Curvatures in the Incremental Roll Forming Process

Abstract

In order to make a doubly-curved sheet metal effectively, a sheet metal forming process has been developed by adopting the flexibility of the incremental forming process and the principle of bending deformation which causes slight deformation in thickness. The developed process is an unconstrained forming process with no holder. For this study, the experimental equipment is set up with the roll set which consists of two pairs of support rolls and one center roll. In the experiments using aluminum sheets, it is found that the curvature of the formed sheet metal is determined by controlling the distance between supporting rolls in pairs and the forming depth of the center roll and it also depends on the thickness of the sheet metal. In order to check the effect of process parameters on the generation of sheet metal curvatures in this process, the orthogonal array is adopted. From the experimental results, among the process parameters, the distance between supporting rolls in pairs along the direction of one principal radius of curvature as well as the forming depth and the thickness of the material is shown to influence the generation of curvature in the same direction significantly. That is, the other distance between supporting rolls in pairs which are not located in the same direction of one principal radius of curvature, does not have an significant effect on the generation of the curvature in that direction. It mainly affects the generation of curvature in its own direction with the forming depth and the thickness of the material.

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참고문헌 (7)

  1. Incremental backward bulge forming of a sheet metal with a hemispherical head tool , S.Matsubara , Journal of the JSTP / v.35,pp.1311-1316, 1994
  2. G.Taguchi;S.Konishi , Orthogonal Arrays and Linear Graphs / v.,pp., 1987
  3. Finite element simulation of an incremental forming process using a roll set for the manufacture of a doubly curved sheet , S.J.Yoon;D.Y.Yang , Proc. of the 5th NUMISHEET / v.,pp.423-428, 2002
  4. A CNC incremental sheet metal forming method for producing the shell components having sharp corners , K.Kitazawa;S.Tanaka;T.Nakamura , Journal of the JSTP / v.35,pp.1348-1353, 1994
  5. Investigation into a new incremental forming process using an adjustable punch set for the manufacture of a doubly curved sheet metal , S.J.Yoon;D.Y.Yang , Proc. Instn. Mech. Engrs / v.215,pp.991-1004, 2001
  6. Improvement of formability for the incremental sheet metal forming process , T.J.Kim;D.Y.Yang , Int. J. Mech. Sci. / v.42,pp.1271-1286, 2000
  7. Forming limit of incremental sheet metal stretch forming using spherical rollers , H.Iseki , Journal of the JSTP / v.35,pp.1336-1341, 1994

이 논문을 인용한 문헌 (2)

  1. Roh, H.J. ; Kim, K.H. ; Shim, D.S. ; Yang, D.Y. ; Chung, S.W. ; Han, M.S. 2008. "Design of Forming Path for Concave Steel Plate Using the Line Array Roll Set" 소성가공 = Transactions of materials processing : Journal of the Korean society for technology of plastics, 17(7): 491~495 
  2. Park, Jeong-Ho ; Lee, Tae-Won ; Jeong, Young-Duk 2011. "The Study for Development of Damper Case Production Technique using Incremental Forming" 한국기계가공학회지 = Journal of the Korean Society of Manufacturing Process Engineers, 10(5): 72~78 

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