| Abstract:In order to solve the problems of weak analyzing ability, lack of basic data support, and severe tooth surface wear under
complex working conditions in the forward design phase of spline joints aeroengine accessory transmission system, the research on wear
resistance evaluating method of floating spline was carried out, a tooth surface contact stress calculating method suitable for floating splines
in aeroengine accessory transmission systems was proposed. Comparative tests were carried out to investigate the influencing factors of
spline wear, during which measurements of the amount of wear and tooth thickness changes were conducted under the different materials,
surface roughness, surface treatment, lubrication conditions, angular misalignment, and tooth profile conditions. The results show that the
surface hardness is the main factor affecting wear resistance, the higher the hardness the higher the wear resistance; spline can improve
contact zone position by tooth profile changes, and reduce contact stress, hence improving the wear resistance under angular misalignment;
the lubrication can reduce frictional wear, decrease ablation, and is the primary measure to reduce spline wear; correct selection of
backlash is beneficial for reducing wear. |
