Experimental Study on Forging Process of Micro Stepped Gear

Article Preview

Abstract:

This paper proposes an integrated computer-aided design and computer-aided manufacturing procedure to produce the forging die for experiment, and the forging formability of micro stepped gear was explored. In the forging process, this paper proposes a novel hybrid forging method with a single die set which would execute two forging stages including the first stage of Upsetting and the second stage of Clamping type Gear forging. In the case study, the materials were fully filled into tooth cavity of small gear of module 0.12mm. On the other hand, the estimated unfilled rate of bigger gear is less 8 to 12%, showing this method is exactly feasible.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

541-547

Citation:

Online since:

August 2014

Export:

Price:

* - Corresponding Author

[1] Y. Saotome and H. Iwazaki, Superplastic backward microextrusion of microparts formicro-electro- mechanical systems, Journal of Materials Processing Technology, 119, pp.307-311, 2001.

DOI: 10.1016/s0924-0136(01)00957-8

Google Scholar

[2] T. Geitzelt, O. Jacobi, V. Piotter, R. Ruprecht, J. Hausselt, "Development of a micro annular gear pump by micro powder injection molding", Journal of Materials Processing Technology, Germany, vol.39, pp.2113-2119, 2004.

DOI: 10.1023/b:jmsc.0000017774.64153.d9

Google Scholar

[3] W.J. Kim, Y.K. Sa, Micro-extrusion of ECAP processed magnesium alloy for production of high strength magnesium micro-gears, Scripta Mterialia, 54, pp.1391-1395, 2006.

DOI: 10.1016/j.scriptamat.2005.11.066

Google Scholar

[4] M.S. Yeh, H.Y. Lin, H.T. Lin and C.B. Chang, Superplastic micro-forming with a fine grained Zn–22Al eutectoid alloy using hot embossing technology, Journal of Materials Processing Technology, 180, pp.17-22, 2006.

DOI: 10.1016/j.jmatprotec.2006.04.013

Google Scholar

[5] M. Ishida, H. Takeda, N. Nishiyama, K. Kita, Y. Shimizu, Y. Saotome, A. Inoue, Wear resistivity of super-precision microgear made of Ni-based metallic glass, Materials Science & Engineering, A 449-451, pp.149-154, 2007.

DOI: 10.1016/j.msea.2006.02.300

Google Scholar

[6] Y.-X. Wu, A research on progressive dies of design and manufacturing of micro-punched gears, M.S. Thesis. National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan.

Google Scholar

[7] Y.-X. Su, Forging preform design and experiment of micro gear, M.S. Thesis. National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan.

Google Scholar

[8] J.-G. Huang, Preform design and experiments of the cold forging of micro gear, M.S. Thesis. National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan.

Google Scholar

[9] Y.-T. Jian, Application of gear profile and die design for precision forging, M.S. Thesis. National Formosa University, Yunlin, Taiwan.

Google Scholar