我们社会的各个领域都在贯彻节省开支的方针。在凿岩作业中,为降低每米凿岩费用采取的一种措施,就是无需对所用的钻头进行修磨。通常,为延长使用寿命及加快凿岩速度,需对镶有硬质合金片的钻头进行修磨。但是,由于人工和材料费的提高,现在倾向于对所使用的球齿钻头不进行修磨。 In all areas of our society, the principle of saving money is being implemented. One of the measures taken to reduce drilling costs per meter during rock drilling operations is to eliminate the need to grind the drill bit used. In general, carbide bits are sharpened to extend their service life and speed up drilling. However, due to increased labor and material costs, there is now a tendency to not polish the bit that is used.