That is, lathe processing, lathe processing is part of machining. The turning machine mainly uses a turning tool to turn the rotating workpiece. On the lathe, drills, reamer, reamer, taps, dies and knurling tools can also be used for machining. Lathes are mainly used for machining shafts, discs, sleeves and other workpieces with a rotating surface. They are the most widely used type of machine tool in machine building and repair plants.
The workpiece is rotated, and the turning tool performs a straight or curved movement in the plane. Turning is generally carried out on a lathe to machine the inner and outer cylindrical faces, end faces, conical faces, forming faces and threads of the workpiece.
When turning the inner and outer cylindrical faces, the turning tool moves in a direction parallel to the axis of rotation of the workpiece. When turning the end face or cutting the workpiece, the turning tool moves horizontally in a direction perpendicular to the axis of rotation of the workpiece. If the trajectory of the turning tool is at an oblique angle to the axis of rotation of the workpiece, the conical surface can be machined. For the surface of the turning body formed by turning, a forming tool method or a tool tip trajectory method may be employed. During turning, the workpiece is driven by the spindle of the machine tool for rotation; the tool held by the tool holder is used for feeding motion. The cutting speed v is the linear velocity (m/min) at the point of contact between the rotating workpiece machining surface and the turning tool; the cutting depth is the vertical distance (mm) between the workpiece to be machined surface and the machined surface for each cutting stroke, but The cutting and forming turning is the contact length (mm) of the turning tool perpendicular to the feeding direction. The feed amount indicates the amount of displacement (mm/rev) of the turning tool in the feed direction per revolution of the workpiece, and can also be expressed by the feed per minute (mm/min) of the turning tool. When turning ordinary steel with high-speed steel turning tool, the cutting speed is generally 25-60 m/min, the carbide turning tool can reach 80-200 m/min; the highest cutting speed can reach 300 when using coated carbide turning tool. M/min or more.
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