| 摘要 |
Device on machine tools for torque transmission to tools, having at least two rotary driving grooves (9), opening out at the end of the tool shank (3) and located diametrically opposite one another, and rotary drivers (8) engaging in the rotary driving grooves (9), and at least one locking body (5) arranged in the tool holder in a radially movable manner and intended for engaging in a locking groove (4), closed in the axial direction on both sides, in the tool shank (3), in which device the rotary drivers (8), to reduce the susceptibility to wear, have a cross-section narrowing in a stepped manner in the direction of the axis of rotation and in each case at least two rotary driving surfaces (F1, F2), offset from one another in a stepped manner, in each direction of rotation. A tool for insertion into such a device. <IMAGE> |
