TOOL HOLDER

PROBLEM TO BE SOLVED: To easily and certainly prevent a leakage of a cutting fluid from a holder body, to ensure a feeding of a cutting liquid to a cutting tool having a larger diameter than that of a shank part and a cutting position by the tool, to change an injection direction of the cutting liquid, and to facilitate a pre-set in a projection direction of the cutting tool. SOLUTION: A space member 50 being also used for sealing is interposed between a stepped part Td provided at a border position of the shank part Ts and a blade part Tc of the cutting tool T and a tip end surface 33b of a chuck cylinder 33. Thereby, a projected length of the cutting tool T from the tip end surface 33b of the chuck cylinder is restricted to a constant length and a leakage of the cutting liquid from the tip end surface 33b of the chuck cylinder 33 and an outer periphery of the shank part Ts of the cutting tool T. A plurality of fluid injection nozzles 60 are pivotably provided at a position near an outer periphery of the front end surface of the space member 50 and is constituted such that they communicate with a groove 56 for a fluid feed passage provided on a holder body 30 through a fluid passage 53 formed on the space member 50. COPYRIGHT: (C)2003,JPO