Machine tool

B - Operations – Transporting – 23 – Q

Patent

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Details

B23Q 3/157 (2006.01) B23Q 3/155 (2006.01)

Patent

CA 2214708

The machine tool comprises a machine stand (10) with a vertically movable vertical carrier (12) carrying a spindle head (SK1) for treatment of a workpiece. To exchange the spindle head (SK1) against a new spindle head (SK2), an exchange unit (15) is provided, comprising an exchange arm (16) pivotable by 90° about a vertical axis (37). Two holding couplings (17,18) are mounted above each other on the exchange arm (16), each adapted to carry a spindle head (SK1,SK2). A delivery means (21), gripping the spindle heads from above, is used to supply the spindle heads for transfer to the exchange unit (15). The exchange unit (15) grips the spindle heads from the side. By pivoting the exchange arm (16) over 90°, the spindle head is pivoted to a position in front of the machine stand (10) and thus can be taken over by the vertical carrier (12).

L'invention concerne une machine-outil comprenant un montant (10) avec un coulisseau vertical (12) déplaçable en hauteur qui porte un nez de broche (SK1) et assure ainsi des opérations d'usinage. Pour remplacer un nez de broche (SK1) par un nouveau nez de broche (SK2), il est prévu un dispositif de remplacement (15) comportant un bras de remplacement (16) pouvant pivoter de 90· autour d'un pivot vertical (37). L'arbre de remplacement (16) est pourvu de deux accouplements de retenue (17, 18) dont chacun peut porter un nez de broche (SK1, SK2). Les nez de broche sont acheminés à l'aide d'un dispositif d'acheminement (24) qui enserre lesdits nez de broche par en haut et les transfère sur le dispositif de remplacement (15). Ledit dispositif de remplacement (15) enserre les nez de broche latéralement. Un pivotement de 90· du bras de remplacement (16) permet de faire pivoter le nez de broche devant le montant de la machine (10), de manière qu'il puisse être pris en charge par le coulisseau vertical (12).

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