Основной каталог Kyocera 2021 - 2022 - страница 844

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Milling Cutting force in radial direction (N) 60mm Overhang length LPR (mm) Height of wall (mm) Cutting Direction Cutting Direction Lead angle 0°/ 2° MEV Low cutting force and tough cutting edge High rigidity web thickness Keeping A.R. max. at 17°, provides lower cutting force than the Provides excellent surface finish and positive insert types of competitors superior cutting accuracy of the wall Cuttting force comparison (internal evaluation) Surface finish comparison (internal evaluation) 2,000 21% Good Clouded 1,500 1,000 500 M 0 MEV Competitor A Competitor B Vertical inserts MEV Conventional A Cutting conditions: Vc = 200 m/min, ap × ae = 3 × 18 mm, fz = 0.10 mm/t, ø20 (3 inserts), Cutting conditions : Vc = 180 m/min, ap × ae = 3 × 40 mm, Dry, workpiece: 42CrMo4 fz = 0.1 mm/t, ø50 (5 inserts), dry, workpiece: C50 Low cutting force and large optimal web thickness provides excellent chattering resistance Chattering resistance comparison (internal evaluation) Shouldering Cutting accuracy of wall example 80 (Internal evaluation) Machining Increased image 60 rigidity Stable machining Chattering 40 occurred 43μm Chattering occurred 13μm 20 12 10 MEV Competitor A 0 MEV Competitor A Competitor B 8 Vertical inserts 6 Cutting conditions: Vc = 200 m/min, ap × ae = 3 × 18 mm, fz = 0.10 mm/t, ø20 (3 inserts), dry, workpiece: 42CrMo4 4 Slotting Competitor B 2 Machined Reference point MEV Competitor A (Vertical triangle inserts) 0 wall side Good Chattering Chattering -60 -40 -20 0 20 40 60 Cutting accuracy of the wall (μm) Cutting conditions: Vc = 200 m/min, ap × ae = 3 × 10 mm (4 pass), fz = 0.15 mm/t, ø50 (5 inserts), dry, workpiece: C50 *Accuracy of the wall surface varies depending on cutting Cutting conditions: Vc = 220 m/min, ap = 3 mm (Slotting), fz = 0.10 mm/t, ø20 (3 inserts), dry, workpiece: 42CrMo4 conditions, machining environment, and insert combination. M72