Precautions for CNC machining

Precautions for CNC machining

1. The rotating speed of white steel knife shall not be too fast.

2. The copper cutter uses less white steel knife and more throwing knife or alloy knife.

3. When the workpiece is too high, it should be cut thick with different lengths of knives in layers.

4. Smooth the knife only when the margin is consistent. After the big knife is used for roughening, use the small knife to remove the surplus material.

5. The plane shall be processed with flat bottom knife and less spherical knife to reduce the processing time.

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

7. The four corners of the surface shall be level.

8. Where the slope is integer, it shall be processed with slope cutter, such as pipe position.

9. Before each working procedure, think about the surplus left after the previous working procedure, so as to avoid empty cutter or excessive machining.

10. Try to take a simple cutting path, such as contour, trenching, single side, less surround height.

11. When walking wcut, if you can walk finish, don’t walk rough.

12. When the shape of a smooth knife is smooth, it should be rough first, then fine. When the workpiece is too high, it should be smooth first, then the bottom.

13. Set tolerance reasonably to balance machining accuracy and computer calculation time. The tolerance is set to 1 / 5 of the allowance when opening rough, and to 0.01 when smoothing.

14. Do more processes to reduce the time of empty cutting. Think more and reduce the chance of mistakes. Do a little more auxiliary line auxiliary surface to improve the processing condition.

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

16. Be diligent in learning, good at thinking and continuous improvement.

Milling non plane, more ball knife, less end knife, do not be afraid to receive knife.

The small knife cleans the corner, the big knife is refined;

Don’t be afraid to mend the surface. Proper mending can improve the processing speed and beautify the processing effect.

High hardness of blank material: better reverse milling

Low hardness of blank material: good milling

Good accuracy, rigidity and finish machining of machine tool: it is more suitable for down milling and vice versa

It is strongly recommended to use down milling for the finishing of internal corners of parts.

Rough machining: better reverse milling, finish machining: better forward milling

Good toughness and low hardness of tool material: suitable for rough machining (machining with large amount of cutting)

Poor toughness and high hardness of tool material: suitable for finishing (machining with small cutting amount)

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