Page 868 - Tungaloy Catalog

Flange type TID

- High helical flute angle provides excellent chip
evacuation New
- Twisted coolant holes supply higher volume of
coolant
- Central flange restricts drill body movement

Straight type TIDC

- Straight shank design allows the use of the
chamfering component Adjustable
- Easily replaces solid carbide drills without changing
any holding components

Drilling and chamfering in ONE operation
3 types of chamfering angles are available.

α = 60°
α

α = 45°
11
α = 30°
Drilling Tools Chip control and stability of hole diameter

Cutting speed: Vc = 260 sfm
Feed : f = 0.006 ipr
0.4744
f = 0.006 ipr
0.4740 f = 0.008 ipr Cutting speed : Vc = 460 sfm
Feed
: f = 0.012 ipr
f = 0.010 ipr
f = 0.012 ipr
Hole diameter (inch) 0.4732 DrillMeister shows excellent chip
0.4736
control in a wide range of cutting
0.4728
conditions and provides stable hole
diameters.
0.4724
0.4720 Drill diameter : øDc = ø0.4724" (ø12 mm)
Work material
: 4340 (285HB)
Hole depth : H = 1.34" (through hole)
0.4716
200 260 330 400 460 Coolant : Wet
Machine : Vertical M/C
Cutting speed: Vc (sfm)

11–52 Relating Cutting Conditions Technical reference
pages
(11-14 )
(14-1)