1, in a program, according to the size of the scale marked on the use of manual programming, you can use absolute programming, incremental programming or mixed programming; if the use of automatic programming software programming, usually using absolute programming.

2, because the diameter of the workpiece is measured in the size of the scale and measurement are usually used in diameter, so the absolute value of programming, X value to the diameter value; with incremental value programming, the actual amount of radial displacement Double the value, and attach the direction sign.

3, the general rotary parts, radial dimensional accuracy than the axial precision requirements, in order to improve the radial dimension accuracy of the parts, X to the pulse equivalent of half of Z to take.

4, due to turning the bar or forging as a rough material, the processing margin is large, and the processing of the thread to be divided into multi-knife processing, so simplified programming, numerical control device with different forms of fixed cycle, Perform multiple cycles of cutting.

5, CNC machine tools are mostly on a turning point as a benchmark to the programming, and in fact sometimes in order to improve the tool life and surface quality parts, the need to sharpen the knife at the tip of a small arc, in order to prevent the production Cutting or cutting, CNC devices generally have a tool nose radius automatic compensation function, this type of CNC lathe can be directly in accordance with the workpiece contour programming, the program is simple, accurate parts size.