Tool warehouse in a numerical control machining centre and the like and tool changing process in such warehouse

摘要

The warehouse includes a track wherein a plurality of tool-holding bushes is dragged. It comprises: - a gear wheel (13) having a part of the toothing thereof extended in the track; - electrically-operated geared motor means (14) controlling the rotation of said gear wheel (13); - a plurality of tool-holding bushes (15), juxtaposed in said track (12, 12') two by two in mutual contact and for filling-in the track itself; - at least a change station (16) arranged in said track (12) and thereat the coming-out and the reintroduction of one of said bushes (15) at a time is determined selectively, so that when, by means of the geared motor (14), the gear wheel (13) is moved into rotation, a bush (15) at a time is received in a corresponding cavity (13. c1) of said wheel, it is dragged by the wheel itself along a track portion (11C), it is released downwards the wheel (13) and together with all other bushes outside said wheel (13) is moved along the remaining portion of the track (12) due to the push of other bushes (15). The simultaneous motion of all the bushes (15) stops when the bush chosen for the tool change is at said change station (16).