Study on the Cold Closed-Die Forging of Planetary Bevel Gears

Article Preview

Abstract:

Taking the Planetary Bevel Gears as an object, the characteristic of cold Closed-die Forging was studied. By Using the FEM, the flowing rule of metal in the process of cold forging were analyzed, which is composed of dual-direction extrusion, upsetting and filling the gear form. The results show that each district of cavity was filled completely at the end of forging, without corner collapse, fold or crack. Taken the lower die as an example, the distribution of die stress was also analyzed. The results of numerical simulation were proved by the experiments, meanwhile the high precision and quality forging was formed. To the gears, the cold closed-die forging can not only ensure the dimensional precision, but also improve the capability of the gear, while obviously reduce materials consumption.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

321-325

Citation:

Online since:

September 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] H J Wang, J C Xia, S W Sun et. 2005, Numerical simulation and experimental study of precision forming in passive spiral bevel gear, J. J. Plast. Eng., 12(3): 14-17.

Google Scholar

[2] TAKASHI Nakano. 1994, Modern application of complex forging and multi-action forming in cold forging, J. J. Mater. Proc. Tech. 46: 201-226.

DOI: 10.1016/0924-0136(94)90111-2

Google Scholar

[3] C Zhang. 2004, Development situation and application of closed-die forging in domestic and abroad, J. Forging Stamping Technol., 29(3): 7-10.

Google Scholar

[4] X Lin, Y Z Zhang, Q S Fang, et. 2007, Numerical simulation analysis on cold closed-die forging of car used differential satellite gear, J. Forging Stamping Technol., 32(2): 115-118.

DOI: 10.4028/www.scientific.net/msf.575-578.517

Google Scholar

[5] J Choi, H Y Jo. 2000, An upper-bound analysis for the forging of spur gears, J. J. Mater., Processing Technology, 104(1~2): 67-73.

DOI: 10.1016/s0924-0136(00)00524-0

Google Scholar

[6] K Zhou, G X Chen. 2002, Numerical simulation analysis of die deflection in net shape forming of bevel gear, J. J. Plast. Eng., 9(1): 74-77.

Google Scholar

[7] Z Z Li, Q B Tang, et. 2009, a sort of dimension control method of the forgings, P. Chinese patent ZL200910191331. 7.

Google Scholar