592 Каталог KYOCERA 2017 Инструмент сборный и монолитный для станков Стр.K35

Каталог KYOCERA 2017 Инструмент режущий Стр. K35 0592 Lab2u

Comparison of Hole Dia. (f=0.3mm/rev) 1) Comparison with indexable drill 2) Comparison with carbide solid drill E TO Q 0 10 20 30 40 50 60 70 Cutting Time (min) (Internal evaluation) Q-3 Drilling deep hole machining using DRC (8D type), dimension variation of diameters has occurred at inlet and far (outlet) side possibly due to deflection. Is there any countermeasure There are some countermeasures as follows to prevent deflection (to improve bite of drill). Countermeasures 1 Increasing the feed rate Increasing the feed rate may keep the processing diameters constant. (Estimated rate: Current rate + 0.03 to 0.05 mm/rev) S55C Vc=80m/min H=112mm f=0.25mm/rev 0.30mm/rev Wet (Internal coolant) SS16-DRC140M-8 DC1400M-SC(PR0315) 14.3 £ 14.2 5 14.1 14.0 13.9 DRC 014-8D 40 60 80 100 Drilling Depth H (mm) If increasing the feed rate is not possible because rigidity of machine or clamp is weak. Countermeasures 2 Make a center spot 1) Make a center spot using the DRC drill or a commercially available center drill which has a vertex angle of about 140°. ( If the center drill can be modified, make its vertex angle larger than 140°) 2) Then drill the hole using the DRC drill (8D type). S55C Vc=80m/min f=0.25mm/rev H=112mm Wet (Internal coolant) SS16-DRC140M-3 SS16-DRC140M-8 DC1400M-SC(PR0315) DRC f 4-3D DRC + 14-8D 0.5Dc or more TT More than half of the Drill Dia. Drilling Depth H (mm) Case Studies Flange Vc=97m/min (n=2,490min-1) H=32mm f=0.3mm/rev (Vf=747mm/min) Wet (Internal coolant) DC1250M-SC (PR0315) S50C SCM440 SS14-DRC120M-3 Competitor A 3,000 holes/insert 1,800 holes/drill Compared to competitor's drill A, MagicDrill DRC type has reduced burr and reduced more than 10% of the power required. Tool life has also improved greatly. (Evaluation by the user) Housing Vc=83m/min (n=2,400min-1) H=32mm f=0.24mm/rev (Vf=576mm/min) Wet (Internal coolant) DC1100M-SC (PR0315) SS12-DRC110M-3 Competitor B 2,400 holes/insert 2,000 holes/drill Compared to competitor's solid drill B, MagicDrill DRC type has greatly reduced preparation time with its easy insert replacement feature. Also, the costs of spare tools for re-grinding has been reduced, and 1°o1 life has improved. (Evaluation by the user) K35 Drilling