本工在磨锯条或锯片时.首先要将它从锯架上卸下,然后才一能磨。西德一家机械公司研究出一种自动磨锯工具。它是一个带有手柄的硬质金属自动磨锯器。将磨刃紧贴在锯齿上,能自动将锯齿磨快,而不再需要传统的磨石 When grinding the saw blade or saw blade, this worker first removes it from the saw frame and only then can it grind. A mechanical company in West Germany developed an automatic sawing tool. It is a hard metal self-grinding saw with a handle. Sliding the edge to the serration will automatically sharpen the serrated teeth, eliminating the need for traditional grindstones