图1所示为机械夹固快換硬质合金刀片切断刀的新結构,当在自动切管机上切断直徑为120～140毫米,壁厚18毫米以下的ШХ15鋼管时可保证工作可靠,并形成所需的切屑。切刀由刀体1、压板(断屑器)2、硬质合金刀片3和 Figure 1 shows the new structure of the mechanical clamping quick-change carbide cutting blade. When the ШХ15 steel pipe with a diameter of 120 to 140 mm and a wall thickness of 18 mm is cut on the automatic pipe cutting machine, the work can be reliably performed and formed The required chip. Cutter knife body 1, platen (chip breaker) 2, carbide inserts 3 and