| 摘要 |
PCT No. PCT/SE95/01016 Sec. 371 Date Mar. 20, 1997 Sec. 102(e) Date Mar. 20, 1997 PCT Filed Sep. 11, 1995 PCT Pub. No. WO96/08334 PCT Pub. Date Mar. 21, 1996A drilling tool for drilling in metals has in its front part cutting insert-carrying cartridges, for instance 3, 5 or 7 in number. The peripheral cartridge (6) carries a peripheral cutting insert (7). This peripheral cartridge is fastened in the drill by a locking screw (16) that extends in a slot (17) in the drillhead. Radially inside of the peripheral cartridge is a wedge (15) which can be displaced axially and thereby regulate the radial position of the peripheral cartridge and cutting insert and, thereby, the cutting diameter. When the desired radial adjustment has been attained, the peripheral cutting insert is fixed by the locking screw (16). In this way, a very exact adjustment of the cutting diameter is obtained. |
