Device for finishing curved work piece surfaces using a grinding belt

A device for belt-grinding a treating work piece surface of a curved work piece using a grinding belt extracted from a supply roller, passed along the work piece surface, and extracted by an extraction roller, the device comprising:

• means for holding, turning and reciprocating the work piece in an axial direction thereof;
• a first processing arm extending toward the work piece and proximate to a first side of the work piece at a first arm end;
• a second processing arm extending toward the work piece and proximate to a second side of the work piece, opposite to the first side of the work piece, at a second arm end;
• a first processing shell mounted to said first arm end and partially surrounding the first work piece side to press the grinding belt against the work piece surface;
• a second processing shell mounted to said second arm and partially surrounding the second work piece side to press the grinding belt against the work piece surface;
• in-process measuring means for measuring the work piece surface during processing;
• a first processing shoe disposed between said first processing arm and said first processing shell for mounting said first processing shell to said first processing arm;
• and
• a second processing shoe disposed between said second processing arm and said second processing shell for mounting said second processing shell to said second processing arm, wherein said in-process measuring means is disposed on one of said first and said second processing arms, wherein said processing arm on which said in-processing measuring means is disposed comprises deflection means for the abrasive belt in a region of a processing shoe of that processing arm.