Page 114 - HOLE_MAKING_CATALOG_INCH_2022_P237-P372

GUNDRILLS • Smooth chip evacuation Brazed body USER GUIDE

Wide flute angle

Large oil hole Steel body tool Flange
• Efficient lubrication • Extremely high rigidity • Superior rigidity for
• Longer tool life for inserts • Simple direct mounting setup higher speeds and feeds
and guide pads

Drilling Process on Machining Centers 1 Drill a .6” pilot hole flat bottom
And Lathe Machines
+.0020
1 Drill a .6” pilot hole D +.0012 flat bottom

2 Set the TRIDEEP drill into the pilot hole
(.4” depth).Vc=16-35 SFM f=.020-.039 IPR
3 Initial cutting at a 1.0” DOC (80% feed rate),
verify activated coolant (Vc=100%). .6
4 In case of through hole, drill the full hole
to a depth of +.2”
5 Retract with slow rotation (15-35 SFM)
2 Slow rotation and feed while entering the pre-hole

.4

3 Maintain for 2-3 seconds and activate the cooling system

1.0

4 Drill +.2” depth through hole

.2

350 ISCAR