Rotating shaft tool
AssigneeKomet Group GmbH
InventorsWolfgang Bierl, Bastian Hilty
Life of this patent
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Abstract
A shaft tool for machine tools, has a shaft, a tool head disposed at a shaft end and equipped with at least one cutting element, and a coupling element disposed at the other shaft end for direct or indirect connection to a machine spindle. A peripheral groove extends along the circumference of the shaft and is open radially, and at least one spreading element engages in the peripheral groove and can be radially adjusted therein, resulting in the exertion of spreading and bending forced onto the groove flanks. The peripheral groove is filled with a filler material at least in the area of the spreading element, the filler material having both a sealing function against contaminants and a damping function. The filler material also acts as a rotation prevention for the spreading elements.
Claims10
A shank-type tool for machine tools, having a shank, a tool head which is arranged on one shank end and equipped with at least one cutting element, and a coupling element arranged on an opposite shank end for directly or indirectly attaching to a machine spindle, the shank having a radially open circumferential groove which extends around the shank circumference and at least one spreading element which engages into the circumferential groove and is radially adjustable therein so as to exert spreading and bending forces on flanks provided in the groove, wherein the circumferential groove is filled with a filler material in the form of a ductile, abrasion-resistant and adherent casting compound having a sealing function and providing rotational locking of the spreading elements.
Dependencies are inferred from the claim text.