Общий каталог Sumitomo 2018 - 2019 - страница 566

Technical Guidance Basics of Endmilling Up-cut and Dowm-cut l Side milling l Slotting ft ft ft Up-cut Work- Work- Down-cut piece piece Work- Feed Feed Feed piece (a) Up-cut (b) Down-cut Work- Work- piece piece Feed Feed (a) Up-cut (b) Down-cut l Wear amount l Surface roughness l Condition Workpiece: C50 Endmill: GSX21000C-2D Feed dir. Vertical dir. (ø10mm, 2 teeth) Flank wear width (mm) 0,08 -- -- 5 -- Cutting conditions: 0,06 Rmax (µm) Up-cut 4 -- vc = 88 m/min -- -- Down-cut Down-cut (n = 2.800 min-1) 0,04 3 -- v f = 530mm/min Up-cut -- -- f t = 0,1 mm/tooth Down-cut 2 -- Up-cut 0,02 -- doc = 15 mm -- woc = 0,5 mm l l l l l 1 -- 0 50 100 150 200 250 Side milling Cutting length (m) 0 Dry, Air Relation Between Cutting Side milling Slotting Condition and Deflection Work material: Work material: Pre-hardened steel Pre-hardened steel Endmill (40HRC) (40HRC) Cutting data: vc = 25m/min Cutting data: doc = 12 mm vc = 25m/min Up- Down- Woc = 0,8 mm d oc = 8 mm cut cut Woc = 8 mm side side Feed rate Feed rate Feed rate Feed rate Cat. Number Helix 0,16 mm/rev 0,11 mm/rev 0,05 mm/rev 0,03 mm/rev No. of teeth angle Style Style Style Style Up-cut Down-cut Up-cut Down-cut Up-cut Down-cut Up-cut Down-cut SSM 2 30° 2080 Technical Guidance SSM Cutting surface 4 30° 4080 Reference surface N11