Method and apparatus for making diffused cooling holes in an airfoil

摘要

A two step process for laser drilling a hole in an airfoil and subsequently performing an EDM step to form the diffuser shaped part of the hole. Alternatively, the process may be performed by laser drilling after EDM formation of the diffuser shape. The laser drilling apparatus and the EDM apparatus each have their own computer that uses a coordinate position data base that is in common for both computers.