Analysis model for surface residual stress distribution of spiral bevel gear by generating grinding

Spiral bevel gears are the key parts of high performance power mechanical transmission system of heavy vehicles, aircraft engines and helicopters. In order to improve the carrying capacity and technique target of spiral bevel gears, it is necessary to study the surface grinding residual stresses of spiral bevel gears, so as to guide the grinding process of spiral bevel gears. An analysis model of surface residual stress based on generating grinding method for spiral bevel gears is proposed. The model can calculate tooth surface residual stress, considering the grinding state of each tooth point in the process of gear machining and the Johnson-Cook plasticity model of material. Supported by the proposed model, the distribution of surface residual stress of spiral bevel gear is analyzed. The model is verified by experimental data, the influence of grinding parameters on the surface residual stress is summarized, and the grinding optimization scheme is put forward. (C) 2018 Elsevier Ltd. All rights reserved.