Machine for grinding rotor blades provided with a multiwheel head

A machine for grinding rotor blades of an aeronautical or similar reaction engine comprising:

• a numeric control CNC to control the movement of a rotor and the movement of a grinding header,
• a machine bed with a sliding table mounted thereon, said sliding table supports two opposing side stand supports for said rotor, said sliding table further supports a high speed rotating rotor operation unit, said machine bed further includes a measuring unit affixed to said machine bed to control a radius of a blades stage being rectified by a grinder coupled to said header, said measuring unit is aligned with said blades stage, and
• means for displacing said header in two at least two directions, and means for rotating said header about a central axis of said header, said means for displacing and said means for rotating said header are controlled by said CNC;
• wherein
• said grinding header is a rotatable header that comprises at least two grinders, a first abrasive coating of a first one of said grinders is formed from a material different than that of a second abrasive coating of a second one of said grinders, such that said first grinder has grinding characteristics differing from grinding characteristics of said second grinder, and wherein
• said grinders are coupled to said rotatable header so that when said header is rotated, said header positions a selected grinder on a blade stage according to header positioning data values, said header positioning data values are calculated by said CNC using geometrical data values of said grinders.