A milling cutter head and a milling cutter tool with holow spaces for receiving a male element

Abstract

In a first aspect, the invention relates to a milling cutter head, which has, on one hand, an external envelope surface (10), which has a rotationally symmetrical basic shape in respect of a central axis (C), and includes a plurality of peripherally spaced-apart cutting edges (11 ) and chip flutes (12), and, on the other hand, two axially spaced-apart ends (8, 9) in which hollow spaces (20) open, which are spaced-apart by a partition wall (25) in which a through hole (17) is formed, which mouths in bottom surfaces (21 ) in the hollow spaces (20). According to the invention, the cross-section area of the individual hollow space (20), in a plane perpendicular to the centre axis (C), amounts to at least 25 % of the total cross-section area of the cutter head, such as this is defined by the greatest diameter (D1) of the envelope surface (10).

Description

technical field [0001] In one aspect, the invention relates to a replaceable milling cutter head in the form of a body, which on the one hand has an outer envelope surface having a basic shape which is rotationally symmetrical with respect to a central axis and which Comprising a plurality of circumferentially spaced cutting edges and flutes, and in another aspect having two axially spaced front and rear ends, the ends have hollow spaces therein arranged to receive included A male element within the base, and these hollow spaces are separated by partition walls in which through holes are formed opening in the bottom surface in said hollow spaces. [0002] In another aspect, the invention also relates to a milling tool having such a milling head. Background technique [0003] Such replaceable milling cutter heads, which include an integrated cutting edge and are removably connected to the tool body, are generally configured to extend over the entire path (or a substantial po...

AI Technical Summary

Problems solved by technology

However, these few teachings have only a theoretical character, so that the document lacks any description of how to detachably connect the milling head to the base body in a stable and reliable manner in practice

In addition, in this structure there is a lack of means of transmitting the torque from the base body to the milling head

Although US 6497540 is theoretically considered prior art, such as defined in the preambles of the appended independent claims, a person skilled in the art cannot use its teachings to construct a Milling tools that are useful in practice

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