Research on the influence of pulse current parameters on the tooth filling during current-assisted splitting spinning of small module tooth-shaped part

Abstract

Current parameters are the main factors influencing the tooth filling of small module tooth-shaped parts (SMTSPs) with characteristics of hollow, thin wall-thickness made of difficult-to-deform metal during current-assisted splitting spinning (CASS). A coupled electrical-thermal-mechanical finite element analysis (FEA) model was established based on the ABAQUS software, and the influence of pulse current parameters, such as current density and duty ratio, on the tooth saturation was investigated. The results show that the tooth saturation increases obviously under pulse current comparing without pulse current, and increases rapidly with the increasing of the current density and duty ratio, but the tooth saturation tends to reach a threshold value when the current density greater than 13.5 A/mm2 and the duty ratio greater than 20%. The relative error of the tooth saturation between simulation and experimental result is less than 2%, which indicates that the established CASS FEA model of SMTSPs is reasonable.

Keywords

• small module tooth-shaped parts
• current-assisted splitting spinning
• current parameters
• tooth saturation