Importance

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Abstract

A milling tool for machining workpieces of wood, derived timber products, plastic material etc., has a support with a receiving portion and a cutting portion. The cutting portion has cutouts with a support surface for receiving at least two exchangeable cutting tips that are connected to the cutouts by at least one screw, respectively. The cutting portion has bores extending from the support surface of the cutouts into the cutting portion. the bores have a threaded portion and a threadless portion. The screws are threaded into the threaded portion of the bores for pressing the cutting tips against the support surface. The cutting tips have receiving openings. The screws have a guide shaft penetrating the receiving opening and extending into the threadless portion that has a tight clearance fit relative to the guide shaft. The screws have a head and the head has a clamping surface extending parallel to the support surface. The guide shaft is arranged adjacent to the clamping surface. The screws have at least one notch positioned adjacent to the guide shaft. The receiving openings are dimensioned such that the guide shaft is received with minimal play. The screws secure cutting tips statically precisely in position and are loaded exclusively by tensile load. Loss of frictional forces between the cutting tips and the cutout results in a maximum displacement of the cutting tips by the minimal play between the guide shaft and the receiving opening. The resulting deformation of the screws occurs in a defined manner in the notch.

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First Claim