Lathe tool is by knife head and arbor two parts place is comprised, knife head is the cutting part of lathe tool, the clip that arbor is lathe tool holds a share. Lathe tool is 4 kinds of forms from the cent on the structure, rectify form of characters or letters namely, solder type, machine clip type, but dislocation type lathe tool, following plan institute are shown. Its structure characteristic and applicable circumstance see next tables. Characteristic of type of structure of lathe tool of chart of lathe tool composition and with name characteristic type of applicable circumstance whole uses integral high-speed steel to make, point can be ground tartlier small-sized lathe or metal of treatment blame iron solder type solders hard alloy or high-speed steel razor blade, the structure is compact, use agile and of all kinds lathe tool especially type of clip of small tool machine avoided to solder the blemish such as the stress of generation, crackle, arbor utilization rate is high. Bit can center blade to grind obtain place to need parameter; Use the circle outside going to the lavatory neatly, end panel, bore hole, cut off, whorl lathe tool but dislocation type avoided to solder the defect of the knife, bit can change dislocation quickly; Productivity is tall; Break bits stability; Can use coating bit large and medium-sized the circle outside lathe treatment, end panel, bore hole, special apply to machine tool of transfer matic, numerical control CNC Milling