| 摘要 |
<p>The invention relates to a tool coupling for machine tools. The coupling comprises a draw bar (20) which carries a shaft portion (12) of a tool holder (13) by means of a radially expandable locking element (24) that is releasably provided around the draw bar. The shaft portion (12) is carried by the provision of a radially extending integral shoulder (21) on the draw bar, said shoulder comprising a bevelled face (30) and a radially outer surface (31) which upon relative axial movement between the draw bar and the locking element forces the latter radially outwards into locking engagement with a complementarily designed annular recess (18) in the shaft portion (12) so as to provide firm clamping thereof.</p> |
