Tool holder for shrink-fit attachment of rotating tools with predominantly cylindrical shafts

摘要

The invention relates to a tool holder ( 10 ) for shrink-fit attachment of rotating tools ( 11 ) with predominantly cylindrical shafts ( 12 ), having a chuck ( 13 ) with a clamping section ( 14 ) containing a conical receiving bore ( 15 ) to accommodate an insert ( 30 ) that has a cylindrical bore ( 32 ) to accommodate the tool shaft ( 12 ) and has a conical outer surface ( 31 ) to be contained in the receiving bore ( 15 ) of the clamping section ( 14 ). The insert ( 30 ) is embodied so that after the axial insertion of the insert ( 30 ) into the hot chuck ( 13 ), a contact is produced between the insert ( 30 ) and the chuck ( 13 ) on the one hand and between the insert ( 30 ) and the inserted tool shaft ( 12 ) on the other hand and, when the chuck ( 13 ) cools, the tool shaft ( 12 ) is clamped, wherein it is possible to bridge over large diameter tolerances while achieving maximum clamping forces (FIG. 1).