Основной каталог Kyocera 2016-2017 - страница 738

MEW ■ MEW Double-sided 4-edge insert, Newly Developed End Mill Kyocera's unique mold technology A.R.Max.+10° reduces cutting force equivalent to (LOMU15 type) positive inserts Cutting angle 90° Obtuse edge increases cutting edge toughness 90° Cutting edge Obtuse Unique mold edge technology Low cutting force equivalent to positive inserts ● Cutting Force Comparison ● Fracture Resistance Comparison * Cutting force is the resultant force of the principal force and the feed force. High stability at high feed rates 2,000 MEW Available for M Cutting force (N) 1,800 Equivalent to positive inserts GM Chipbreaker further machining 1,600 1,400 Competitor D (Negative) Fracture fz（mm/t） 1,200 127% 109% 100% 98% 0.30 1,000 Competitor E (Negative) Fracture 0.35 Milling 800 MEW 0 10 20 30 40 50 Competitor A Competitor B Competitor C (Negative) (Negative) GM Chipbreaker (Positive) Cutting Time (min) Vc=120m/min ap×ae=3×10mm fz=0.3~0.35mm/t Inserts Vc=150m/min ap×ae=3×15mm fz=0.15mm/t S50C Cutter dia. φ20 (Internal evaluation) SCM440H (37～39HS) Cutter dia. φ20 (Internal evaluation) Lead Angle Improved surface finish, minimizing chattering MEW Competitor F Competitor G 45°/20° Lead Angle GM Chipbreaker (Negative) (Positive) 15° Sharp cutting and superior resistance to chattering and burrs, Lead Angle due to helical cutting edge and optimum axial rake design +20° +17° +17° 0° Large actual rake angle lowers cutting force High Feed Surface of shoulder wall Burr comparison with positive cutters Multi- Function Competitor H Competitor I Slot Mill MEW (Positive cutter) MEW (Positive cutter) Ball-nose Burrs Radius Others Smooth surface of MEW without chattering Less burrs than positive cutters due to sharp cutting Vc=240m/min ap×ae=4（3 passes）×5mm fz=0.12mm/t Dry SS400 Cutter dia. φ20 Vc=250m/min ap×ae=4×5mm fz=0.1mm/t Dry S50C Cutter dia. φ20 M52