| 摘要 |
The machine has a spindle which in its free end has a chucking fixture, designed as a collet. The chucking fixture is intended for a tool which can be fed into position and removed by a tool changing device. In this arrangement, a draw bar actuating the collet by axial displacement is guided in the spindle, and the tool, in each case on the spindle side, has a tool holding head with a centring taper in an inverted frustum shape, which centring taper can be gripped from the rear by the collet in its chucking position with a conical inner surface in order to clamp the tool against the spindle. The novel tool holding device according to the invention is characterised in that the collet (7) is provided with at least one T-shaped grooved portion (72) open on one side, in that the spindle end (2') has a T-shaped or rectangular grooved portion (22) at least on one side, and in that the grooved portions (72, 22) of collet (7) and spindle end (2') can be positioned in alignment with one another in such a way as to permit the tool holding head (1) to retract and extend from the side and respectively to the side. The tool change is simplified and accelerated by the invention. <IMAGE> |
