Points for Attention in CNC Machining Programming

Note for CNC machining programming:

1. The speed of the white steel knife should not be too fast;

2. Coppersmiths use less white steel knives for rough cutting, and more use flying knives or alloy knives;

3. When the workpiece is too high, use different length cutters to cut thickly;

4. After roughing with a big knife, use a small knife to remove the remaining material to ensure that the remaining amount is consistent before the knife is cut;

5. Flat-bottomed knives are used to process planes, and ball knives are used less to reduce processing time;

6. When the copper worker cleans the corner, first check the size of the R on the corner, and then determine the size of the ball knife to use;

7. The four corners of the calibration plane should be flat;

8. Where the inclination is an integer, use the inclination knife to process, such as pipe position;

9. Before doing each process, think about the margin left after the previous process is processed, so as to avoid empty cutters or excessive processing;

10. Try to take simple toolpaths, such as shape, digging, single-sided, and avoid the surrounding height;

11. When walking WCUT, if you can go FINISH, don't go ROUGH;

12. When the shape of the light knife is rough, polish it first, then polish it. When the workpiece is too high, polish the edge first, then polish the bottom;

13. Set tolerances reasonably to balance processing accuracy and computer calculation time. When roughing, the tolerance is set to 1/5 of the margin, and for light knife, the tolerance is set to 0.01;

14. Do more procedures to reduce the time of empty knife. Do more thinking to reduce the chance of error. Do a little more auxiliary line auxiliary surface to improve processing conditions;

15. Establish a sense of responsibility, carefully check each parameter, and avoid rework;

16. Diligent in learning, good at thinking, and continuous improvement;

17. For milling non-planar surfaces, use ball cutters more, use end cutters less, and don't be afraid of receiving cutters;

18. Clear the corner with a small knife and finely repair the big knife;

19. Don't be afraid of making noodles. Proper noodle making can increase the processing speed and beautify the processing effect;

20. The rough material has high hardness: up-milling is better;

21. The rough material has low hardness: down milling is better;

22. The machine tool has good precision, good rigidity, and fine processing, which is more suitable for down milling, and vice versa;

23. It is strongly recommended to use down milling for finishing of inner corners of parts;

24. Rough machining: up-milling is better; finishing: down milling is better;

25. Tool material has good toughness and low hardness: more suitable for rough machining (large cutting amount machining);

26. The tool material has poor toughness and high hardness: more suitable for fine processing.