Calculation of cutting data during milling - basics

The efficient calculation of cutting data is crucial to achieve optimal milling results. Two crucial parameters that must be taken into account are the Speed in revolutions per minute (rpm) and the Milling rate in millimeters per minute (mm/min).

1. Speed (rpm):

Speed is a central factor in milling and depends on various factors such as Tool diameter (d) and the material off. The formula for calculating speed is:

In this case, the cutting speed (Vc) into meters per minute (m/min) measured.

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2nd milling rate (mm/min):

The milling feed determines how fast the workpiece is moved relative to the milling machine. The formula for calculating the milling feed is:

The rate per tooth depends on the Depth of cut (ap) and the Cutting width (ae).

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example:

Let's say you want to mill aluminum.

• Cutting speed (Vc): 400 m/min
• Tool diameter (d): 10mm
• Number of blades: 1
• Feed per tooth (fz): 0.13 mm
• Cutting depth (ap): 0.5xd
• Cutting width (ae): 10mm

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1. Calculation of Speed (n):

           n = (400 m/min x 1000) / (10mm x 3.14)

           n = 12,732 rpm

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2. Calculation of Milling rate (mm/min)

Vf = 0.13 mm x 1 x 12,732 rpm

           Vf = 1655 nn/min

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This example shows how to use the formulas for Speed (n) and Milling rate (mm/min) be able to apply with specific values.

It is important to emphasize that the correct cutting data can increase the life of the tool and improve the quality of the machined surfaces.

However, the precise definition of these parameters also requires experience and consideration of the specific material properties. Experiment with the values and adapt them to individual circumstances to achieve optimal results.