| 摘要 |
The invention relates to a cutting plate for tools rotating about a tool axis, especially boring tools with several cutting edges. Said cutting plate comprises a major cutting edge (26) which is connected to the minor cutting edge (32) in the radial extension thereof over a cutting corner (30) at a certain angle. A common face (38) is joined to a longitudinal side of the major cutting edge (26) and the minor cutting edge (32), while a major flank (40) or a minor flank (42) is joined to the other longitudinal side of the major cutting edge (26) and the minor cutting edge (32), said flank forming a wedge angle with said face. The aim of the invention is to be able to support the tool on the boring wall (36) with low friction in order to enable extensively vibration-free machining to be carried out even with long projecting tools. In order to achieve this, a support land (34) is arranged in the region of the minor cutting edge (32), said support land being defined by two interspaced support edges (44, 46) which are arranged in the rotating direction of the tool. The support edges have the same radial distance (r1, r2) in relation to the tool axis (24) over the whole of the length thereof. Said support edges (44, 46) are oriented in a functionally parallel manner in relation to the tool axis (24), while the support land is functionally embodied in the form of a flat surface which is parallel in relation to the tool axis.
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