26 Essential CNC Machining Tips Every Professional Should Know

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, you should use different length cutters to cut the thickness.
4. After roughing with a big knife, use a small knife to remove the remaining material to ensure that the remaining amount is consistent.
5. Flat-bottomed knives are used for plane machining, and ball knives are used less to reduce machining 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, grooving, single-sided, and less 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 first, then polish. When the workpiece is too high, polish the edges first, then polish the bottom.
13. Set tolerances reasonably to balance processing accuracy and computer calculation time. For 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 a little more thinking to reduce the chance of error. Do a little more auxiliary line auxiliary surface to improve the processing condition.
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 non-planar milling, use ball cutters more and less end cutters. Don’t be afraid to pick up the cutter.
18. A small knife is used to clear the corners and a large knife is used for fine repairs.

19.Don’t be afraid of making up the 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 finishing: 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 (it is best to avoid backwashing, which can damage the tool, especially hard materials)
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: it is more suitable for finishing.