FIELD: machine building.
SUBSTANCE: tool holder comprises a tail part designed with a possibility of holding by the main shaft of the machine, a tool fixing part with an entry hole on the end surface, where the tool is inserted, a cover with tubular wall, which closes external periphery of the tool fixing part, and bottom surface, which closes a face surface of the tool fixing part, and the limiter, which prevents the cover rotation with the tool fixing part. On the bottom surface of the cover a viahole, through which the tool passes, and an ejection hole located on periphery of the viahole for ejection of coolant to the tool are provisioned.
EFFECT: tool holder allows to eject coolant from the position near the processed part and deliver the coolant to the required place without the necessity in provisioning a hole for feeding of lubricating and cooling fluid inside the tool.
16 cl, 12 dwg
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