Основной каталог Kyocera 2021 - 2022 - страница 510

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Internal grooving EZG type KGDI: Stable machining with excellent chip control and smooth chip evacuation 1. Excellent chip control with GMI chipbreaker for internal grooving Evenly breaks chips in various cutting conditions with newly designed chipbreaker geometry. Good chip control even in finishing applications with small depths of cut. Rear ramp Center geometry squeezes chips and prevents chip clogging during high Comparison of chip control (Internal evaluation) supports chip deformation. feed machining. GMI Chipbreaker Competitor A Conventional product F Smooth chip control with stable chip shape compared with Competitor A and Conventional F. Prevents frequent machine stops caused by G Corner design stabilizes chip shape tangled chips. Front design stabilizes during finishing and improves chip chip shape during low Cutting conditions : Vc = 100 m/min, f = 0.07 mm/rev, toolholder: KGDIR3225B-3 breaking performance. feed machining. Insert: GDM3015N-040GMI, workpiece material: SCr420 2. Smooth Chip Evacuation by Creating Chip Pocket Grooving Smooth chip evacuation when grooving and finishing. Residual chips (Internal evaluation) 5.4 60 Prevents 50 chip 6.0 clogging Residual rate (%) 40 30 5 2 1 3 4 φ33 25 20 10 Cutting conditions: Vc = 100 m/min 0 1: ap = 3 mm, 2, 3: ap = 1 mm, KGDI Competitor B Competitor C 4, 5: ap = 0.2 mm f = 0.08 mm/rev Chips remaining in machined bore were greatly reduced Toolholder: KGDIR3225B-3 compared with Competitor B and C. Insert: GDM3015N-040GMI Improved chip evacuation by innovation chip pockets Workpiece material: 15CrMo4 3. Low cutting forces and stable machining GMI chipbreaker prevents chip clogging and reduces cutting forces. Comparison of cutting force (Internal evaluation) GMI chipbreaker 1,200 1,500 Stable machining ■ ■ Resultant force ■ ■ Principal force ■ ■ Thrust force with few changes in cutting force. Cutting force［N］ 1,000 1,000 500 Cutting force［N］ 800 0 0 0.5 1 1.5 2 2.5 600 Cutting time［sec］ Competitor D 400 1,500 Instantaneous increase of cutting force due to clogged chips. Cutting force［N］ 1,000 200 500 0 GMI chipbreaker Competitor D 0 Cutting conditions: Vc = 150 m/min, f = 0.1 mm/rev 0 0.5 1 1.5 2 2.5 Toolholder: KGDIR3225B-3, insert: GDM3015N-040GMI Cutting time［sec］ Workpiece material: 15CrMo4 G56