| 摘要 |
The invention relates to a chipper knife of the type that is adapted to be mounted in chippers which have a rotatable tool, in the form of a disc, drum or frustoconical member, on which are mounted a plurality of such chipper knives to provide, during rotation of the tool and simultaneous feeding of pieces of wood to the same, material-cutting working or disintegrating of the pieces of wood into chips. The chipper knife comprises at least one cutting edge (7) which is defined between two edge-forming surfaces (9, 10) at an acute angle to each other. At least one of the two edgeforming surfaces is formed with a thickened cutting edge portion (12) in the area next to the cutting edge, said thickened cutting edge portion having a shoulder edge (13) toward the rest of the edge-forming surface and forming an angle to, or having a different centre of curvature to, the rest of the edgeforming surface. The invention also relates to a method of manufacturing such a chipper knife.
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