| 摘要 |
The subject matter of the invention is a tool-clamping device, more particularly for milling and drilling machines, consisting of a clamping arrangement (5) with clamping tongues (6), arranged centrally and longitudinally displaceably in the tool spindle (2), of a rotational position indicator for presetting the clamping jaws into their tool-change position, and of a positioning mechanism (11, 15) for finely adjusting and fixing the tool spindle (2) in the tool-change position. In order to achieve automatic positioning of the tool spindle (2) in its tool-change position after presetting by means of the rotational position indicator, the positioning device has a cross pin (11) which is secured to the clamping arrangement (5), projects through an elongated axial hole (13) in the tool spindle (2), and is guided between two guide surfaces of a guide member (15) on longitudinal movement of the clamping arrangement (5). |
