CNC-Fräse: Unterschied zwischen den Versionen
Reox (Diskussion | Beiträge) remove section that is now on a seperate page |
Reox (Diskussion | Beiträge) rule of thumb |
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| Aluminium (9-13% Si)|| VHM || || 300 || 0.06 || From "Praxis der Zerspantechnik" | | Aluminium (9-13% Si)|| VHM || || 300 || 0.06 || From "Praxis der Zerspantechnik" | ||
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A rule of thumb is the following: The lower the Youngs modulus (E-Module) of a material, the sharper the tools must be, a more rigid setup is required, heavy feeds and slow speeds produce better results and abundant cooling is required. | |||
This is due to the yielding of the material during cutting. A very stiff material will not yield under the cutting force. | |||
A good example is the difference between polymeres and aluminium. Polymeres have low E-Modules (in the range of a few GPa) where aluminium has a E-Module of 70GPa. When cutting polymeres, the main problems are melting and smearing of the material, when using the same parameters as for aluminium. | |||