What are the main failure modes of enclosed soft-surface gear transmission?
1 Answers
The main failure modes of enclosed soft-surface gear transmission are tooth surface pitting and bending fatigue fracture of the gear teeth. The reasons are: 1. The hardness after heat treatment is relatively low, unable to guarantee the required contact fatigue strength of the gears; 2. The machining and assembly precision of the gears do not meet the requirements; 3. The grade of the lubricating oil is incorrect, with low viscosity and poor lubrication performance; 4. The oil temperature is too high, reducing the viscosity of the lubricating oil. The solutions for the failure of enclosed soft-surface gear transmission are: 1. Use appropriate heat treatment methods to enhance the toughness of the gear tooth core; 2. Increase the fillet radius at the tooth root, eliminate machining tool marks at the tooth root, and strengthen the tooth root area; 3. Increase the gear module; 4. Use positive profile shifted gears.