Research on Scratching of Gear Teeth in the Intermediate Reducer of a Helicopter Transmission System
By analyzing and investigating the causes of gear tooth surface abrasion in the intermediate reducer of a certain type of helicopter transmission system,the values of tooth tip fillet a and b were introduced as auxiliary judgments to determine the connection between tooth tip fillet and tooth surface,and the connection between tooth tip fillet and tooth surface.It was determined that the tooth surface abrasion was caused by the output gear tooth tip fillet being too small and not smoothly transitioning to the tooth surface connection.This article pro-vides a detailed analysis of the fault mechanism and proposes improvement measures from both design and process aspects to address the cause of the fault.The measures have been verified to be effective through experiments.
Intermediate reducerTooth surface abrasionTooth surface adapterTooth tip fillet