Tool head and method for inserting and clamping a cutting insert, and cutting insert

A method for inserting and clamping a cutting insert in a mount of a tool head, comprising:

• introducing a cutting insert into a gap between a first side wall of a groove and a closure element, the groove tapering in a radial direction so as to be wider at a base of the groove;
• producing a first positive locking connection between the cutting insert and the first side wall of the groove;
• clamping the cutting insert with a centrifugal wedge;
• and
• producing a second positive locking connection between the closure element and the centrifugal wedge when the closure element is inserted into the tool mount, wherein the cutting insert is locked to the first positive locking connection to the first side wall and the closure element is locked to the centrifugal wedge by the second positive locking connection, with the closure element forcing the cutting insert into engagement with the first positive locking connection between the cutting insert and the first side wall;
• wherein a first side of the cutting insert abuts the first side wall of the groove such that a first locking connection of the side wall engages with a second locking connection of the first side of the cutting insert and wherein a second side of the cutting insert is planar;
• wherein the closure element has a planar first side abutting against the planar second side of the cutting insert and has a third locking connection on a second side thereof;
• and
• wherein the centrifugal wedge is positioned between the closure element and the second side wall opposite the first side wall of the groove, the centrifugal wedge having a fourth locking connection on a first side thereof, the fourth locking connection engaging with the third locking connection of the closure element, the centrifugal wedge abutting against the second side of the closure element;
• wherein the centrifugal wedge has a hole with an internal thread into which a clamping screw is introduced, wherein the centrifugal wedge is moveable radially outward into a clamping position by turning the clamping screw in a first direction to lock the cutting insert to the first side wall and the closure element to the centrifugal wedge, with the centrifugal wedge applying a clamping force to the closure element and the cutting insert to hold the second locking connection of the cutting insert to the first locking connection of the first side wall, wherein the centrifugal wedge increases the clamping force against the closure element and the cutting insert resulting from a centrifugal force applied to the centrifugal wedge when the tool head is rotated during use and wherein the centrifugal wedge is moveable radially inward and into a tool change position by turning the clamping screw in a second, opposite direction until the cutting insert is disengaged from the first side wall and be radially removed from the groove.

A tool system having a tool head for a woodworking machine having a cylindrical, conical or profiled main part with a tool mount defining a groove that tapers in a radial direction so as to be wider at a base of the groove, the groove having a first side wall and a second side wall opposite the first side wall, a closure element having a planar first side abutting against a planar second side of a cutting insert, a second side of the cutting insert configured to engage and connect to the first side wall of the groove, and a centrifugal wedge positioned between the closure element and the second side wall of the groove, a first side of the centrifugal wedge engaged with and connect to the second side of the closure element, the centrifugal wedge abutting against the second side of the closure element and applying a clamping force against the closure element and the cutting insert to maintain the engagement and connection of the cutting insert to the first side wall, wherein the centrifugal wedge increases the clamping force against the closure element and the cutting insert resulting from a centrifugal force applied to the centrifugal wedge when the tool head is rotated during use and wherein the centrifugal wedge is moveable radially inward and into a tool change position by turning a clamping screw in a first direction until the cutting insert is disengaged from the first side wall and be radially removed from the groove, comprising:

• a cutting insert abutting the first side wall of the groove, the cutting insert having a first side and a planar second side, the first side of the cutting insert engaged with and connected to the first side wall of the groove, the cutting insert comprising a cutting edge along a top edge of the first side thereof, the first side thereof being flat and having a longitudinally extending recess along the second side thereof, the longitudinally extending recess configured to engage with and be held relative to the tool head and having a bottom edge diagonally opposite the cutting edge defining a surface in the form of one of a bevel or a rounding, wherein the cutting insert is configured to be locked to the first side wall of the groove with a surface of a closure element abutting the first side of the cutting insert to force the cutting insert into locking engagement with the first side wall.

A cutting insert for a tool head of a woodworking machine, comprising:

• an elongate plate having a cutting edge along a top edge of a first side of the elongated plate and a bottom edge opposite the cutting edge defining a surface in the form of one of a bevel or a rounding, the depth of which is at least 15% of a thickness of the elongate plate, the first side of the elongate plate being planar and a second side of the elongate plate defining a longitudinally extending recess along a second side of the elongate plate, the longitudinally extending recess configured to engage with and be held relative to the tool head, the tool head comprising:
• at least two tool mounts, each of the at least two tool mounts comprising:
• a groove that tapers in a radial direction so as to be wider at a base of the groove, the groove having a first side wall and a second side wall, the first side wall having a first locking connection;
• a closure element having a planar first side abutting against the planar side of the elongate plate a second side;
• and
• a centrifugal wedge positioned between the closure element and the second side wall opposite the first side wall, the centrifugal wedge having a first side engaged with and connected to the second side of the closure element, the centrifugal wedge abutting against and positively locking to the second side of the closure element, the centrifugal wedge applying a clamping force against the closure element and the elongate plate to hold the elongate plate to the first side wall, wherein the centrifugal wedge increases the clamping force against the closure element and the elongate plate resulting from a centrifugal force applied to the centrifugal wedge when the tool head is rotated during use and wherein the centrifugal wedge is moveable radially inward and into a tool change position by turning a clamping screw in a first direction until the elongate plate is disengaged from the first side wall and be radially removed from the groove, wherein the centrifugal wedge has a hole with an internal thread into which the clamping screw is introduced, wherein the centrifugal wedge is movable radially outward into a clamping position by turning the clamping screw in a second opposite direction to lock the elongate plate to the first side wall and the closure element to the centrifugal wedge and can be moved into a tool change position by turning the clamping screw in the first direction, the elongate plate abutting the first side wall of the groove, the elongate plate engaging with and connected to the first side wall, wherein the elongate plate is configured to be positively locked to the first side wall of the groove with a flat surface of the closure element abutting the second side of the elongate plate to force the elongate plate into engagement with the first side wall.