| 摘要 |
A tapered ground auger 10 comprising an auger shaft 12 having an auger screw 18 with an at least in part spiral flight and a plurality of auger teeth 34, each auger tooth including a tooth body 36 and a cutter 38 defining an elongate leading cutting edge, the auger teeth being engageable with the auger screw such that the elongate leading cutting edge of the cutter is or substantially is aligned to a radius of the spiral. The teeth maybe removable and positioned in a range of angles. A spiral auger screw 200 and a method of forming such a tapered ground auger 10 are also provided. |
