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http://dx.doi.org/10.5228/KSTP.2011.20.3.214

Design of Half Blanking Process for Reducing Rollover and Stress Acting on Tools in Forming of Lower Tooth  

Jang, M.J. (부산대 정밀가공시스템)
Choi, H.S. (부산대 정밀가공시스템)
Lee, S.H. (부산대 정밀가공시스템)
Kim, D.S. ((주)다스 금형팀)
Lee, S.G. ((주)다스 금형팀)
Ko, D.C. (부산대 부품소재산학협력연구소)
Kim, B.M. (부산대 기계공학부)
Publication Information
Transactions of Materials Processing / v.20, no.3, 2011 , pp. 214-221 More about this Journal
Abstract
In recent years, automotive seat components have been manufactured by the fine blanking process, allowing an improvement of dimensional accuracy at sheared surface in series production. However, the rollover has increased and die failures have occurred more frequently when manufacturing gears by fine blanking. Consequently, important goals for manufacturing seat recliner parts with gears have been to decrease the rollover as well as to improve the tool life. In this study, the half blanking and shaving processes were introduced to improve aforementioned problems for the lower tooth, the main component of a seat recliner. For this purpose, the half blanking process was optimized using the finite element (FE) analysis and design of experiment (DOE). The optimized conditions resulting from this study were an offset of 0.2 mm, a clearance of 0.1 mm and a penetration depth of 4.5 mm. Fine blanking experiment conducted under the optimal condition resulted in a rollover depth decrease from 1.9 to 1.3 mm, and no die failure occurrence.
Keywords
Lower Tooth; Recliner; Fine Blanking; Half Blanking; Shaving; Design of Experiment; FE-analysis;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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1 C. S. Woo, J. S. Koo, H. J. Cho, H. S. Kim, J. S. Jeong, 2001, Structual Analysis and Evaluation Technologies of Automotive Seat Frames, Process. Kor. Soc. Mech. Eng. (A), pp. 806-811.   과학기술학회마을
2 J. Y. Kim, J. H. Kim, W. J. Chang, 2005, Influence of Die Design Variables on the Sheared Surface in Shearing Process of Sandwich Sheet Metal, J. Kor. Soc. Technol. Plast., Vol. 14, No. 1, pp. 37-42.   과학기술학회마을   DOI
3 T. S. Kwak, Y. J. Kim, M. K. Seo, W. B. Bae, 2003, The effect of V-ring indenter on the sheared surface in the fine-blanking process of pawl, J. Mater. Process. Technol., Vol. 143-144, pp. 656-661.   DOI
4 T. S. Kwak, Y. J. Kim, W. B. Bae, 2002, Fine element analysis on the effect of die clearance on shear planes in fine blanking, J. Mater. Process. Technol., Vol. 130-131, pp. 462-468.   DOI
5 Y. J. Kim, T. S. Kwak, W, B, Bae, 2000, Finite element analysis on effect of die clearance on shear planes in fine blanking, J. Kor. Soc. Technol. Plast., Vol. 9, No. 2, pp. 40-44.
6 J. D. Kim, J. J. Kang, H. K. Kim, S. K. Hong, B. J. Kim, 2005, A progressive fine blanking process design for forming of carrier plate, J. Kor. Soc. Technol. Plast., Vol. 14, No. 3, pp. 207-214.   과학기술학회마을   DOI
7 T. Nakagawa, K. Suzuki, M. Kinoshita, 1971, Profile effects on the sheared surface qualities in fine blanking, J. of Jpn. Soc. Technol. Plast., Vol. 12, No. 129, pp. 742-751.
8 B. M. Kim, H. S. Choi, M. J. Jang, J. H. Bae, S. B. Lee, D. C. Ko, 2008, Development of High Precision Plate Holder in Automotive Seat Recliner by Mechanical Press(I), J. Kor. Soc. Precis. Eng., Vol. 25, No. 7, pp. 55-63.   과학기술학회마을
9 K. S. Lee, J. Y. Jung, J. H. Kim, 2010, Influence of working variables in simplified gear shaving process, J. Kor. Soc. Technol. Plast., Vol. 19, No. 5, pp. 290-295.   과학기술학회마을   DOI
10 B. V. Hien, S. M. Kim, H. Y. Kim, T. W. Ku, B. S. Kang, 2007, Numerical analysis of parameters affecting formability in micro half blanking using thin sheet metal, Proc. Kor. Soc. Precis. Eng., pp. 15-16.   과학기술학회마을
11 P. D. Harvey, 1985, Engineering Properties of Steel, 2nd ed., American Society for Metals, Ohio. pp. 431-468.
12 K. Kondo, K. Maeda, A. Meada, K. Hirota, 1994, Development of a simple precision shearing process for thick plates, J. of Jpn. Soc. Technol. Plast., Vol. 35, No. 396, pp. 67-72.
13 B. M. Kim, H. S. Choi, M. J. Jang, J. H. Bae, S. B. Lee, D. C. Ko, 2008, Development of High Precision Plate Holder in Automotive Seat Recliner by Mechanical Press(II), J. Kor. Soc. Precis. Eng., Vol. 25, No. 7, pp. 64-71.   과학기술학회마을