Analysis on Forming Characteristics of Cup-Shaped Thin-Walled Inner Gear Spinning

Abstract:

Spin-forming is a new near net-shape forming process for cup-shaped thin-walled inner gear (CTIG). The CTIG spinning was investigated by numerical simulation and processing experiments. The results show that the compressive deformation along tangential direction on the internal surface of part leads to a reduction in root circle of spun part; and the local loading and friction work result in the nonuniform radial deformation on the external surface of spun part. For spin-forming of CTIG with a small number of teeth, the diameter reduction is feasible for improving the forming quality of tooth groove, while the nonuniform radial deformation would cause concaves on external surface of part. For spin-forming of CTIG with a large number of teeth, the diameter reduction is not conducive to removing the part from the mandrel.

• Periodical: Key Engineering Materials (Volume 455)
• Pages: 544-547
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.455.544
• Online since: December 2010
• Authors: L.Y. Sun, Bang Yan Ye, Qin Xiang Xia, Xiu Quan Cheng
• Keywords: Cup-Shaped Thin-Walled Inner Gear, Forming Characteristics, Metal Spinning, Numerical Simulation, Processing Experiment

References

[1] Maschinenbau and Blechformtechnik GmbH & Co. KG: Innovation in Chipless Forming Technology on http: /www. wfmaschinenbau. com/objectfiles, 2002-04-08.

[2] Y.H. ZHAO: Present situation of spinning technology. Forging & Stamping Technology, Vol. 4 (2005), pp.95-100.