Общий каталог Sumitomo 2018 - 2019 - страница 565

Technical Guidance Basics of Endmilling Parts of an Endmill Body Neck Shank Land width Cutter sweep Neck diameter Relief width Radial relief Margin width Radial primary Diameter Shank relief angle diameter Margin Radial secondary relief angle Neck length Length of cut Shank length Center hole Overall length Center cut Rake angle Rake face Helix angle land width Flute Heel Corner Radial cutting edge Land End cutting edge End gash Rounded flute bottom Center hole Web thickness Axial primary relief angle Flute depth Chip pocket Axial secondary relief angle Ball radius Concavity angle of end cutting edge Calculating Cutting vc : Cutting speed (m/min) l Cutting speed Side milling Conditions π ≈ 3,14 π.D.n 1.000 . vc vc = n= D : Endmill diameter (mm) 1.000 π.D n : Rotational speed (min -1) v f : Feed speed (mm/min) l Feed rate f r : Feed rate per revolution (mm/rev) f t : Feed rate per tooth (mm/tooth) vf = f 5 n doc z : Number of teeth vf D vf = ft 5 z 5 n ft = z 5 n Woc Slotting l Depth of cut (D.O.C) doc : Axial D.O.C. (depth) woc : Radial D.O.C. (width) R doc doc (Ball Endmill) l Notch width (D1) D1= 2 5 2 5R 5doc —doc2 D1 D Pf øD l Cutting speed and feedrate are calculated using R Technical Guidance the same formula as square endmill. doc D1 Woc N10