Abstract:

Based on the engineering bionics, experimental optimal design method was employed for the scheme of experiments, laser graphic texturing was applied to the micro-morphology process of the grid bionic surface on gear root surface. Experiments to investigate the bending fatigue strength of gears were carried out. The results show that, compared with ordinary gears, the bending fatigue life of all the gear teeth with the grid micromorphology is prolonged to 106% to 142%. The anti-fatigue strength of the gear was improved by the bionic surface micro-morphology.

Key words: engineering bionics, bionic surface micro-morphology, laser graphic texturing, bending fatigue life, anti-fatigue strength