Tool arrangement
AssigneeKomet Group GmbH
InventorsBenno SPORS, Hendrik NITZSCHE, Manuel MAYER
Life of this patent
Estimating the term…
Abstract
A tool arrangement containing a tool holder and a tool having a tool head for processing workpieces and a shaft supporting the tool head, wherein the tool holder and the shaft each have a planar surface oriented transversely with respect to the axial direction of the tool holder and the shaft, the planar surfaces lying opposite one another. The tool holder and the shaft are connected non-rotatably and releasably to one another by a connecting mechanism which has a journal projecting in the axial direction and a receptacle which receives the journal.
Claims21
-20. (canceled)
A tool arrangement having a longitudinal center axis (28) having a tool holder (12) which can be connected to a machine spindle for rotation around the longitudinal center axis (28)
- having a tool head and having a shank (24) which supports the tool head having a tool (20) for machining workpieces,
- the tool holder (12) and the shank (24) in each case having a flat surface (32, 34) which is oriented transversely with respect to their axial direction, the flat surfaces (32, 34) lying opposite one another, and the tool holder (12) and the shank (24) being connected releasably and fixedly to one another so as to rotate together by way of connecting means (18, 22) which have a journal (22) which projects in the axial direction and a receptacle (18) which receives the journal (22), and
- with a device for isolating torsional vibrations in the tool holder (12) and in the shank (14) which supports the tool head around the longitudinal center axis (28), characterized in that
- the device for isolating torsional vibrations has means (36) for reducing the friction that are arranged between the flat surfaces (32, 34), which means (36) hold the flat surfaces (32, 34) at a spacing from one another, have a lower coefficient of friction than the flat surfaces (32, 34) when in direct contact with one another in comparison with at least one of the flat surfaces (32, 34), and the compressibility of which means (36) is not greater than the compressibility of the shank (24) and than the compressibility of the tool holder (12).
A method for decoupling torsional vibrations of a tool holder (12) and a shank (24) having a tool (20), which torsional vibrations can occur during the machining of workpieces,
- the tool holder (12) and the shank (24) in each case having a flat surface (32, 34) which is oriented transversely with respect to their axial direction, the flat surfaces (32, 34) lying opposite one another, and the tool holder (12) and the shank (24) being connected to one another releasably and fixedly so as to rotate together by way of connecting means (18, 22) which have a pin (22) which projects in the axial direction and a receptacle (18) which receives the pin (22),
- characterized in a step of
- providing means (36) for friction reduction which hold the flat surfaces (32, 34) at a spacing from one another, have a lower coefficient of friction with respect to at least one of the flat surfaces (32, 34) than the flat surfaces (32, 34) when in direct contact with one another, and the compressibility of which is not greater than the compressibility of the shank (24) and than the compressibility of the tool holder (12).
Dependencies are inferred from the claim text.