
SUMIDIA Drills DAL/DDL/DML Type From general to High Precision Drilling of Aluminum Alloys! l High precision DAL type is able to produce holes of IT Class of 7~8. l General DDL type is able to produce holes of IT class of 11~12, mainly for drilling of pre-tap holes. l DML type is DDL type with a chamfer edge, incorporating 2 processes in one operation. DAL Type DDL Type Stock Stock Cat. No. øD L l Cat. No. øD L l DA2200 DA2200 DAL 0500H ~ 0600H ø5 ≤ D ≤ ø6 80 30 DDL 050V ~ 060V ø5 ≤ D ≤ ø6 80 30 DAL 0601H ~ 0700H ø6 < D ≤ ø7 90 35 DDL 061V ~ 070V ø6 < D ≤ ø7 90 35 DAL 0701H ~ 0800H ø7 < D ≤ ø8 90 35 DDL 071V ~ 080V ø7 < D ≤ ø8 90 35 DAL 0801H ~ 0900H ø8 < D ≤ ø9 100 40 DDL 081V ~ 090V ø8 < D ≤ ø9 100 40 DAL 0901H ~ 1000H ø9 < D ≤ ø10 100 40 DDL 091V ~ 100V ø9 < D ≤ ø10 100 40 DAL 1001H ~ 1100H ø10 < D ≤ ø11 110 50 DDL 101V ~ 110V ø10 < D ≤ ø11 110 50 DAL 1101H ~ 1200H ø11 < D ≤ ø12 110 50 DDL 111V ~ 120V ø11 < D ≤ ø12 110 50 Recommended Conditions Important Notes Cutting Speed Feed Rate Drilling Length l Select a high rigidity machine and high precison tool Oil (m/min) (mm/rev) L/D holder. øD < 8 0,05 ~ 0,2 l Enough coolant to drilled hole. 80 ~ 250 Below 3 x D Water soluble 8 ≤ øD 0,1 ~ 0,3 Application Examples (DAL Type) Application Examples (DDL Type) Work Shape Work Conditions Results Work Shape Work Conditions Results • Holes by carbide ADC12 A390 drill was out of +0,012 -0,15 +0,11 specifications after Aluminum Vc=100m/min 2.000 holes/reg. Vc=214m/min • Regrind after High silicon • SumiDia drill could drill Die Cast f=0,1mm/rev f=0,14mm/rev 100.000 holes Aluminum up to 30.000 holes/reg. 20 6,6 • 15 times tool life that of M8 Pre-tap carbide drills. holes A390 • Average 40,000 • Regrind after +0,28 -0,12 +0,043 ADC12 High silicon holes/reg 74.000 holes Vc=120m/min Vc=200m/min Sumiboron / SumiDia Aluminum (2.000m) f=0,12mm/rev • Surface roughness Aluminum f=0,17mm/rev (Preset tool Tools 40 27 Die Cast (pre-cast Ry = 1µm change) hole of ø10) +0,102 +0,052 ADC10 AC2A • Regrind after 0,1 • More than Vc=90m/min Vc=234m/min 80.000 holes 50.000 holes Aluminum f=0,08mm/rev Aluminum f=0,28mm/rev (Preset tool and still running 12 Die Cast Casting change) 24 M54