Page 859 - Tungaloy Catalog

TDX type inserts

DG type DJ type

Applicable for low speed machining. Prevents long chips from General purpose chipbreaker for almost all applications.
tangling around the tool body, even when the cutting speed is low on Features low cutting forces and allows stable drilling.
heavy machines with a low-rpm spindle.
Wavy cutting edge
Deeply formed chip groove performs
Creates wavy chips that are easily exceptionally free cutting action with
controlled and broken.
effective chipbreaking.
Chipbreaker for central edge
Relatively shallow chip groove
prevents chips from packing.
Chipbreaker for making short chips
Controls the direction of chip flow to break Low cutting forces and long tool life
chips with cracks. This prevents long chips from Bumps and grooves formed on the rake face reduces cutting force
tangling around the tool body. and delivers longer tool life.
DW type DS type
In comparison with conventional inserts, this chipbreaker allows Performs excellent chip control for gummy materials such as
higher feeds and produces superior surface finishes. stainless steels and low carbon steels.
Entirely new rake face design
Wiper design Can effectively form gummy material
Can improve surface finish. chips into short sections.

Extraordinary strengthened
corner
Increased land width plus a two step relief Strengthened corner
angle strengthens the corner section.
Strengthened corner geometry
minimizes insert breakage even when
Strong chipbreaker for high feeds Sharp cutting edges drilling stainless steels.
Can forcibly curl thick chips produced at high
feeds, causing them to break into short sections. Exceptionally free cutting
action improves chip control.
Cutting performance
Chip control
Chips are well controlled and shortened.
Tool No chip control difference with 11
diameter ø2.250 (without setting plate) ø2.447 (with setting plate)
D or without setting plates.
Feed
f (ipr) This ensures stable machining in
each diameter range.
AISI 4140 Drill : TDBU2250-2447-2.5 Drilling Tools
Insert
Grade : XPMT08T308R-DJ
: AH725
AISI 1045 Cutting speed : Vc = 530 sfm
Machine
: Vertical M/C, CAT50
: H = 3.0"
Hole depth
Coolant
: Wet (Internal)
Hole accuracy 50 mm
Highly rigid body and optimized insert position provides stable machining for high accuracy.
Change of hole diameter Hole enlargement
0.004 øDc = ø2.579" 0.008 Drill : TDBU2461-2579-2.5
*Displacement of hole diameter (inch) -0.002 Diameter enlargement (inch) 0.006 øDc = ø2.579" Insert : AH725
Vc = 530 sfm, f = 0.005 ipr
: XPMT08T308R-DJ
0.002
Grade
(with a setting plate)
0.000
0.004
: AISI 4140
Workpiece
Machine
: Vertical M/C, CAT50
0.002
(without a setting plate)
-0.004
0 10 20 30 40 0 0.004 0.004 0.005 øDc = ø2.461" Cutting speed : Vc = 530 sfm
: f = 0.004 ~ 0.006 ipr
0.006
Feed
Cutting time T (min) Feed: f (ipr)
Hole depth : H = 3.0"
The variation in hole diameter The value of diameter enlargement Coolant : Wet (Internal)
is minimal when drilling with setting plate is similar to the
continuously. value without setting plate.
* (Above graph shows the displacement value compared
with diameter of 1st hole.)
Relating Cutting Conditions Technical reference 11–43
pages (11-14 ) (14-1)