Multi-spindle cnc lathe

B - Operations – Transporting – 23 – B

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B23B 13/00 (2006.01) B23Q 1/00 (2006.01) B23Q 5/26 (2006.01) B23Q 11/00 (2006.01) B23Q 11/10 (2006.01) B23Q 39/04 (2006.01) H05K 3/00 (2006.01)

Patent

CA 2228132

A multi-spindle CNC lathe (50) comprises a frame assembly mounted on a base (52) and including spaced apart, rigidly interconnected subframes (104, 106) defining spaced, parallel alignment surfaces. A plurality of spindles (430) each includes a collet (450) for rotating a stock about a spindle axis. An indexing mechanism (218) positions the spindles (430) in alignment with work stations located at equally spaced intervals about a central axis. Internal tool slides (220) mounted on the alignment surface (106) of one of the subframes (104, 106) each comprises a servo mechanism (224) for advancing and retracting a cutting tool along a work station axis.

Un tour multibroche (50) à commande numérique par ordinateur comprend un bâti monté sur une base (52) et constitué de sous-bâtis (104, 106) espacés, mais tenus ensemble d'une manière rigide et définissant des surfaces d'alignement espacées et parallèles. Plusieurs broches (430) comprennent chacune un mandrin de serrage (450) permettant de faire tourner une pièce à usiner autour d'un axe de broche. Un mécanisme de mise au point (218) aligne les broches (430) avec les postes de travail se trouvant à des intervalles égaux autour d'un axe central. Chaque coulisseau porte-outil (220) interne, monté sur la surface d'alignement (106) d'un des sous-bâtis (104, 106), comprend un servo mécanisme (224) servant à faire avancer et reculer un outil de coupe le long de l'axe du poste de travail.

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