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Analytical and Experimental Study on the Quality Stability of Multi Roll Forming Process
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 Title & Authors
Analytical and Experimental Study on the Quality Stability of Multi Roll Forming Process
Son, Jae-Hwan; Han, Chang-Woo; Ryu, Kyung-Jin; Kang, Hae-Dong; Kim, Chul-Hong;
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 Abstract
It is faced with the necessity of multi roll forming process of the ball slide rail which is made by adding the separate manufacturing processes, piercing, bending, trimming, to the roll forming process of a continuous plastic deformation, to improve the quality. However, the vibration and noise of the press machine in this process leads to the quality degradation of slide rail manufactured in this process. In this study, the roll was designed considering the optimal strain rates by the roll forming program with finite element method. And to estimate the static stability of the multi process the Von-Mises stress and deformation on the press was calculated with a structural analysis program. Also, to avoid driving systems in the resonance region their natural frequencies in the 1st and 2nd mode were calculated through the modal analysis. To verify its dynamic stability improvement the magnitudes of noise and vibration in the existing and studied system were compared using a microphone and accelerometers. And the widths and surface roughnesses of the rails which had been produced in the existing and studied process were measured. Therefore, it is known that multi roll forming process is stable in the analytical and experimental study.
 Keywords
Ball slide rail;Structural analysis;Modal analysis;Multi roll forming;Noise and vibration test;
 Language
Korean
 Cited by
 References
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