CNC turning and milling complex machining programming is difficult


CNC turning and milling complex machining programming is difficult

The CNC turning and milling of a new part requires multiple programming actions, such as the programming of CNC turning, multi-axis milling, 3+2 positioning processing and drilling, which is more difficult in actual operations. Therefore, those who can program are basically masters with a certain degree of experience. Even if you are younger, you need to be skilled enough to complete a programming operation by yourself.

Generally, UGNX and CATIA systems can also be used for CNC turning and milling combined processing through programming function modules. When roughing the reverse surface, inclined wall and contour cavity, the processed area can be defined by the entity, appearance or curve, and cut Most of the blank materials are suitable for rough machining of all appearance and inner cavity of reversing parts. During rough machining, the machining strategy of following the part is adopted, and the machining toolpath is formed by offsetting the same number of steps along the few borders of the part. When an intersection is encountered, a toolpath in between is trimmed.
CNC turning and milling processing
Under this processing strategy, the margin on the periphery can be eliminated. This processing strategy is particularly suitable for hole-type processing. Because of the uneven surface and the rugged surface, the slope changes greatly. When 3-axis CNC machining, the continuous change of cutting depth and cutting width will cause unstable tool load, aggravate tool wear, and reduce machining quality. In the parts with large convex and concave surfaces, the interference between the tool and the workpiece is prone to occur, and serious consequences occur. The positioning 3+2 processing method can overcome the shortcomings of the 3-axis CNC machining of the messy curved surface. CNC turning and milling compound machining positioning 3+2 machining refers to turning the B and C axes to a certain point of view and locking and then processing. When the processing of one area is completed, adjust the B, C axis according to the normal vector direction of the other processing area. The viewpoint of the C axis continues CNC turning and milling machining.

Its essence is to change the five-axis linkage machining into a fixed viewpoint machining in a certain direction, and the direction of the tool axis no longer changes during the machining process. Since CNC turning and CNC milling combined processing can be completed in one positioning, 3+2 positioning processing has significant advantages in efficiency and quality compared to 3-axis CNC machining. Turn-mill multi-axis milling finishing solutions. Use the multi-axis linkage machining method to finish machining multiple messy fragment surfaces of the cylindrical part of the messy reversal part, and select the machining geometry, drive mode and related parameters. In the actual processing, the characteristics of the machine tool should be fully utilized, and the swing angle of the tool can be effectively manipulated to change the size, so that the displacement and the swing angle are well matched, and the over-cutting phenomenon can be prevented. In order to reduce the sharpness of the change of the swing angle of the tool at the corner of the part, when processing the corner of the part, a transitional tool position should be appropriately added. This is also conducive to the smooth operation of the machine tool, preventing overcutting, and improving the processing appearance quality of the part.