Device for the contactless three-dimensional inspection of blades for a turbomachine, especially an aircraft turbine or jet engine

A method of contactless three-dimensional inspection of a blade for a turbomachine, said blade comprising a body extending radially along a main axis between a blade root and a blade tip, the body having a defined height and comprising a first main face and a second main face terminated by a leading edge and a trailing edge, the method comprising:

• scanning said blade with laser measurement modules while rotationally driving, about the main axis, said blade relative to the laser measurement modules or vice versa, and while translationally driving, in translation along the main axis, said blade relative to the laser measurement modules or vice versa;
• building a three-dimensional virtual representation of said blade using data obtained from said scanning;
• dimensionally inspecting using said three-dimensional virtual representation;
• the laser measurement modules comprising a first laser measurement module oriented towards the first main face of said blade and a second laser measurement module oriented towards the second main face of said blade;
• said laser measurement modules being oriented relative to said blade so that:
• during rotation of said laser measurement modules or of said blade about the main axis, said scanning entails a scan the first and second main faces of said blade on the entire rim of said blade, and
• during translation of said laser measurement modules or of said blade along the main axis, said scanning entails a scan the first and second main faces of said blade throughout their height.