CHANGEUR DE PALETTES PORTE-PIECES POUR MACHINE-OUTIL

• Main Author: KENJI NOMURA, TETSURO YAMAKAGE ET KATSUYOSHI NORO
• Format: Patent
• Language: French
• Published: 25.02.1983
• Subjects: COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TRANSPORTING

CE CHANGEUR POSSEDE UN DISPOSITIF 40 POUR CHARGER ET DECHARGER ALTERNATIVEMENT DES PALETTES 20, 20 PORTANT DES PIECES USINEES OU A USINER SUR UNE MACHINE-OUTIL COMPORTANT UNE COLONNE 46 MOBILE HORIZONTALEMENT AVEC UNE POUPEE PORTE-BROCHE 47 MOBILE VERTICALEMENT. LE CHANGEUR POSSEDE EN PLUS UN PLATEAU 19 POUR BLOQUER LA PALETTE SUR LA TABLE D'AVANCE 2 DE LA MACHINE-OUTIL, QUI EST DEPLACABLE HORIZONTALEMENT DEVANT LA COLONNE 46. AFIN D'EMPECHER LA DEFORMATION DU PLATEAU 19 SOUS LE POIDS DE LA PALETTE AVEC SA PIECE AU CHARGEMENT ET AU DECHARGEMENT, LA COMMANDE HYDRAULIQUE DU PLATEAU 19 EST COMBINEE AVEC DES VERINS DE SOUTIEN AUXILIAIRES 32, 32. A pallet changer for a machine tool is provided wherein a pallet clamper for guiding a work pallet during transfer movements onto and away from a rotary table of the machine tool is supported at its center portion and vertically movable by a hydraulic cylinder. This cylinder moves the clamper up to unclamp the pallet from the rotary table prior to the transfer movements and moves the clamper down to clamp the pallet on the rotary table upon completion of the transfer movement onto the rotary table. Auxiliary hydraulic cylinders are further provided at either end portions in a pallet transfer direction of the clamper and between the rotary table and the clamper for auxiliarily supporting the clamper while the pallet is unclamped, so that the clamper can be prevented from being deformed due to the weight of a mass of the pallet and workpiece supported only by the clamper during such time.