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The CNC machining process mainly includes: analysis of part drawings, process analysis, mathematical processing of graphics, programming, program verification, trial cutting, modification confirmation and other steps.

Analyze the drawing of the part: compare the specifications, performance and function of the CNC lathe with the geometric shape and size of the part to determine whether it meets the requirements.

Process analysis: The process of CNC lathe processing cannot be adjusted manually like ordinary machine tools, so an economical and reasonable process plan must be formulated in advance. It mainly includes determining the positioning of parts and fixtures, processing sequence, tool routing, cutting tools, cutting parameters, heat treatment methods, verification and auxiliary procedures, etc.

Mathematical processing of graphics: Establish the workpiece coordinate system and perform necessary calculations, such as obtaining the center and end coordinates. For some relatively backward CNC machine tools, it may be necessary to manually calculate the sharp corner transition.

Programming: A program is a process described by a digital representation provided by a CNC machine tool. This method is called processing code or G code. Details will be introduced in the next section.

Program verification and trial cutting: Generally, first check whether the tool path is correct during simulation, then dry run to observe whether the tool movement is normal, and then clamp the workpiece for trial cutting.

Modification confirmation: modify the problems exposed in the verification link.

For complex parts, CAD/CAM software is often used to analyze part drawings, process analysis, mathematical processing of graphics, and programming. Due to the differences in the G code definitions of various CNC systems, the corresponding post processor needs to be selected in the CAD/CAM software. Complete G code generation.