• Title/Summary/Keyword: Clutch Drum-hub

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Optimization of Pre-form for Manufacturing of Automobile Drum Clutch Hub Products Using Taguchi Method (다구찌기법을 이용한 자동차용 드럼 클러치 허브 제조를 위한 예비성형체의 최적화)

  • Kim, Seung-Gyu;Park, Young-Chul;Park, Joon-Hong
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.9 no.6
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    • pp.101-108
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    • 2010

  • The drum clutch investigated in this study is formed in 5 forming steps, which are 1st deep drawing, 2nd deep drawing, restriking, embossing, and $Grob^{TM}$ processes. Dimensional accuracy of the final products greatly depends upon how much more accurate pre-form is manufactured in the previous forming processes before the $Grob^{TM}$ process. The deep drawing, restriking and embossing processes in which the pre-form is formed are very important and decisive steps. Thus in some cases, excessive strain by these operations causes dimensional inaccuracy and cracks initiated from the base and wall of the product. Process variables such as the punch shapes both of 1st and 2nd deep drawing, and punch angle were selected to evaluate the deformation characteristics. The optimum parameters were determined from forming simulations using commercial FEM codes, DEFORM and Tauchi method, specifically developed for metal forming simulation. Finally, experiments for the whole drum clutch forming processes were carried out to verify the optimized forming parameters and the analytical results.

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Roll Die Forming Process for Manufacturing Clutch Hub in Automotive Transmission (롤 다이 성형공정을 이용한 변속기 허브 클러치 제조)

  • Ko, D.H.;Lee, S.K.;Kwon, Y.N.;Kim, S.W.;Lee, H.S.;Park, E.S.;Kim, B.M.;Ko, D.C.
    • Transactions of Materials Processing
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    • v.20 no.2
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    • pp.154-159
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    • 2011

  • The roll die forming (RDF) process is a new manufacturing technique for producing gear parts such as clutch drum and clutch hub in automotive transmission. In the RDF process, the material is deformed by a roll installed on a die set. Excellent productivity, low forming load and improved dimensional accuracy have quantitatively been shown to be the benefits of the RDF. In this study, the RDF process is applied to manufacture a clutch hub with a gear shaped part. A finite element (FE) analysis was performed in order to investigate the material strain field and dimension of the final product. Based on the result of the FE analysis, a RDF experiment was performed and the dimensional accuracy of the final product was validated. This work demonstrates that RDF is a process capable of producing a sound clutch hub.

  • https://doi.org/10.5228/KSTP.2011.20.2.154 인용 PDF KSCI