Slot machining

摘要

A method for cutting a blade root retention slot (24) in a turbine engine disk element (20) includes forming a precursor slot (24') in the element (20). The precursor slot (24') has first and second sidewalls and a base (30). A rotating bit (120) is passed through the precursor slot to machine the base (30). The bit (120) rotates about an axis (520) off-normal to a direction of passing (512).