High RPM in CNC milling machines can improve surface finish in several ways:
- Reduced Chip Load: At higher RPM, the chip load (the amount of material removed with each cutting edge) is reduced. This means that smaller chips are produced, resulting in a finer surface finish.
- Reduced Heat Generation: High RPM can also reduce heat generation during machining. This is because the cutting tool spends less time in contact with the workpiece, reducing the amount of heat that is generated. This can result in a smoother, more uniform surface finish.
- Reduced Vibration: High RPM can reduce the vibration of the cutting tool, resulting in a smoother surface finish. When the cutting tool vibrates, it can leave marks on the workpiece, resulting in a rough surface finish. By reducing vibration, high RPM can help to achieve a smoother surface finish.
- Improved Tool Performance: High RPM can also help to extend the life of the cutting tool. When the cutting tool rotates at high speeds, it experiences less wear and tear, resulting in a longer tool life. This can help to maintain the sharpness of the tool, resulting in a smoother surface finish.
Overall, high RPM can help to achieve a smoother, more uniform surface finish by reducing chip load, heat generation, and vibration, while also extending the life of the cutting tool.
