OUTIL DE PERCAGE AVEC POSSIBILITE D'AJUSTEMENT DE L'ORIENTATION DU TRANCHANT POUR LE RETRAIT, SANS CONTACT, D'UN PERCAGE

摘要

A boring tool has a radially adjustable tool bit holder mounted on a head part connectable to an adaptor. A threaded stud for the connection between the head part and the adaptor has a thread arranged in each half, the two threads having different pitches or leads. An adjusting tool for the boring tool has a seat which mates with the threaded stud for rotating the stud relative to the thread arranged on the head part. The tool is marked with a scale in accordance with the formula S=SG2/SG1 (scale factor) in which SG1 is the lead of one thread G1 on the threaded stud and SG2 is the lead of the other thread G2 on the threaded stud.