Каталог Widia трохоидальное фрезерование - страница 80
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Technical Information
- Tolerances
End Mill Tolerances tolerance h6
| D1 | tolerance e8 | D | + / - | |
| )3 | -0,014/-0,028 | )3 | 0/0,006 | |
| >3–6 | -0,020/-0,038 | >3–6 | 0/0,008 | |
| >6–10 | -0,025/-0,047 | >6–10 | 0/0,009 | |
| >10–18 | -0,032/-0,059 | >10–18 | 0/0,011 | |
| >18–30 | -0,040/-0,073 | >18–30 | 0/0,013 |
- Additional Formulas
Symbol Defi nitions
Legend vc cutting speed n revolutions per minute (RPM) D1 cutter diameter vf feed (mm/min) fz feed per tooth Z number of effective teeth or inserts in cutter / 3.1416 Ap1 depth of cut ae radial width of cut D diameter of insert (round inserts) hm average chip thickness h chip thickness rr cutting edge lead angle
- Calculating Speed and Feed
| to fi nd | given | formula | given | calculated |
| vc | D1 n | �x D1 x n vc = 1000 | D1 = 125mm cutter diameter Z = 8 teeth in cutter | 1000 x 200 n = = 510 RPM 3.1416 x 125 |
| n | D1 vc | 1000 x vc n = �x D1 | vc = 200 mm/min fz = 0,2mm | vf = 0,20 x 8 x 510 = 816 mm/min |
| vf | fz n Z | vf=fzxZxn | ||
| fz | Z vf n | vf fz = Zxn |