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17 Application Skills Points of Milling for the beginner’s guide

In the actual production of CNC milling machining processing, a wide range of application skills are required, including machine tool setting, workpiece clamping, and tool selection. This article briefly summarizes the 17 main points of mill processing for everyone, each of which is worthy of your in-depth grasp.

CNC milling skills

1. Power capacity

Check the power capacity and machine rigidity to ensure that the machine tool can use the required milling cutter diameter.

2. Workpiece stability

Workpiece clamping conditions and considerations.

3. Overhang

Make the tool overhang on the spindle as short as possible during processing.

4. Choose the right mill cutter pitch

Use the correct tooth pitch of the milling cutter suitable for the process to ensure that there are not too many blades involved in the cutting, otherwise it will cause vibration.

5. Cutter

For narrow workpieces or when milling with gaps, ensure that there are enough blades to take the knife.

6. Blade geometry selection

Use positive rake angle indexable inserts as much as possible to ensure smooth cutting action and lowest power consumption.

7. Use the correct feed

By using the recommended maximum chip thickness, ensure the correct feed of the insert used to achieve the correct cutting action.

8. Cutting direction

Use down milling as much as possible.

9. Part considerations

Workpiece material and configuration, as well as the quality requirements of the surface to be processed.

10. Blade material selection

Select the geometry and material according to the type of workpiece material and the type of application.

11. Damping milling cutter

For longer overhangs that are more than 4 times the tool diameter, the vibration tendency becomes more obvious, and the use of vibration-damped tools can significantly increase productivity.

12. Tool cutting edge angle

Choose the most suitable tool cutting edge angle.

13. Milling cutter diameter

Choose the correct diameter according to the width of the workpiece.

14. Milling cutter position

Position the milling cutter correctly.

15. Milling cutter cut in and cut out

It can be seen that through arc cutting, the chip thickness when the tool is retracted is always zero, so that higher feed and longer tool life can be achieved.

16. Coolant

Use coolant only when deemed necessary. Generally, milling can be performed better when coolant is not used.

17. Maintenance

Follow tool maintenance recommendations and monitor tool wear.

CNC milling skills

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