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| | | Recommended Feed Rates for Aluminium Machining Mills | | |
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| | | Aluminium machining mills, helix angle 45°: i | | |
| | | rel. width of cut ae | | |
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| | | N sz -t-» o o -t-» l_ <D Q. ■D | | |
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| | | a. ■(-» . ~o CO '■4-» ■(-» Ü | | |
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| | | | | | | | | | | Correction factors for fz | | | | Helix angle | Type AA | Type BA | | | | 20°/30° 45° | 0,85 1,00 | 1,00 1,15 | | | | Example: fzdiagram: fz45°helix | 0,13 0,13x1,0 = | = 013 | | | | | | | | | | |
| | | Application example Full slot milling Material............................................: Tensile strength................................: Milling diameter................................: | | |
| | | 3,2315 (AlMgSil) 320 N/mm2 F2AA1600ADL45 16 mm KC631M 2 cutting edges 300 m/min 14,5 mm 16 mm | | |
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| | | Carbide grade. Number of edges z . Cutting speed vc..... Cutting depth ap..... Width of cut ae ....... | | |
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| | | Result: Plunging Full slot milling | | Feed per tooth fz Feed rate Vf | | Speed n 2984 min"1 5968 min"1 | | |
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| | | 0,13 mm 0,13 mm | | 776 mm/min 1552 mm/min | | |
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| | | Attention: In plunging (drilling) only one cutting edge over centre is in contact, i.e. only 1 x fz should be used to calculate the feed rate vf ! | | |
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| | | 120 | | |
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