| 摘要 |
A cutting machine that can grind a cutting blade in a manner that the angle of a cutting edge is maintained constant. A support block (14) has two arms (14a, 14b) opened at a specific angle. Rotating shafts (12a, 13a) of rotating grindstones (12, 13) are extended upright from the vicinities of the front ends, respectively, of the arms (14a, 14b). The rotating grindstones (12, 13) grind one side (11b) and the other side (11c), respectively, of the cutting edge (11a) of the cutting blade (11) by those flat surfaces (12b, 13b) at the front ends of the rotating grindstones (12, 13) which are perpendicular to the rotating shafts (12a, 13a). A grindstone holding mechanism (15) can move linearly along a guide axis (16) to cause the flat surfaces (12b, 13b) of the rotating grindstones (12, 13) to make contact with the one side (11b) or the other side (11c) of the cutting blade (11), and by this, the grindstone holding mechanism (15) can change conditions of grinding. The flat surfaces (12b, 13b) and the one and the other sides (11b, 11c) of the cutting blade (11) are held parallel to each other even if grinding progresses, so that the angle of the cutting edge is maintained constant. |
