Spindle for a machine tool, comprising a bearing element...

B - Operations – Transporting – 23 – Q

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Details

B23Q 5/04 (2006.01) B23Q 11/12 (2006.01) F16C 33/66 (2006.01) F16N 7/12 (2006.01)

Patent

CA 2560907

The invention relates to a spindle (1) for a machine-tool, especially an engine spindle, comprising a housing (6) for receiving an electric engine, a shaft received in bearing elements (2, 3, 4, 5) and driven by the electric engine, and especially a tool receiving element for a tool for machining workpieces, at least one bearing element (2, 3, 4, 5) comprising a capillary feeding line (15, 16, 17, 18) for supplying lubricant by means of a pump element (20). The invention also relates to a bearing element (2, 3, 4, 5) for one such spindle (1), said bearing element comprising at least one recess (11, 12, 13, 14) for receiving a capillary feeding line (15, 16, 17, 18) for supplying lubricant by means of a pump element (20). The invention further relates to a method for operating one such spindle for a machine-tool, whereby a temporal and/or quantitative dosing of lubricant is carried out according to the evaluation of a sensor element, in order to sufficiently lubricate at least one bearing element. Image

L'invention concerne une broche (1) de machine-outil, notamment une broche motorisée, comportant un boîtier (6) pour recevoir un moteur électrique et un arbre entraîné par ce dernier et logé dans des éléments paliers (2, 3, 4, 5), ainsi qu'un raccordement d'outil pour un outil servant à l'usinage de pièces, au moins un élément palier (2, 3, 4, 5) étant pourvu d'un conduit capillaire (15, 16, 17, 18) pour l'alimentation en lubrifiant par un élément pompe (20). La présente invention porte également sur un élément palier (2, 3, 4, 5) pour une broche (1) de ce type, cet élément palier étant doté d'au moins un évidement (11, 12, 13, 14) pour recevoir un conduit capillaire (15, 16, 17, 18) pour l'alimentation en lubrifiant par un élément pompe (20). Enfin, cette invention concerne un procédé pour faire fonctionner une broche de machine-outil de ce type, l'évaluation d'un élément capteur permettant un dosage temporel et/ou quantitatif de lubrifiant pour une lubrification suffisante d'au moins un des éléments paliers.

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