Multi-Stage Deep Drawing Process of Thin Sheets for the Sleeve Housing Component of a Spindle Motor in HDD

Abstract:

High-precision micro-fluid dynamic bearing is the key part in a hard disk drive, as it offers low noise levels, high speeds and high rates of accuracy with low amount of vibration. To enhance the performance, a thin sheet component called sleeve housing are newly adopted in FDB. In this paper, multi-stage sheet metal forming process is utilized to fabricate the sleeve housing component. Multi-stage drawing simulations are conducted to investigate the adequate process parameters preventing wrinkling and tearing. From the simulation result, multi-stage drawing processes are conducted with progressive die sets in order to evaluate the forming accuracy. The results reveal that it is successful to fabricate the sleeve housing component with multi-stage drawing process.

• Periodical: Applied Mechanics and Materials (Volume 389)
• Pages: 359-363
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.389.359
• Online since: August 2013
• Authors: S.M. Yeon, S. Choi, G.A. Lee, S.J. Park, J.H. Kim, J.H. Song
• Keywords: Finite Element (FE) Simulation, Formability, Multi-Stage Deep Drawing, Sleeve Housing Component

References

[1] J.H. Song, J. Park, J. Lee, S. Choi, H. J. Lee and J. H. Hwang: Adv. Mater. Res. Vol. 538-541 (2012), p.1203.

[2] J.H. Song, H.J. Lee, S.J. Park and H.W. Lee: Adv. Sci. Lett. Vol. 13 (2012), p.8.

[3] H. Huh and S.H. Kim: J. Eng. Mater. Technol. -Trans. Of ASME Vol. 123 (2001), p.476.

[4] Information on http: /www. eta. com/dynaform.