Каталог Widia трохоидальное фрезерование - страница 80

High-Performance Solid Carbide End Mills 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 Definitions 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 find given formula given calculated D1 / x D1 x n 1000 x 200 vc n vc = n= = 510 RPM 1000 D1 = 125mm cutter diameter 3.1416 x 125 Z = 8 teeth in cutter D1 1000 x vcnvcn= vc = 200 mm/minfz = 0,2mm vf = 0,20 x 8 x 510 = 816 mm/min / x D1 fz vf n vf = fz x Z x n Z Z vf fz vf fz = n Zxn 78 WWW.WIDIA.COM