Replaceable Tip Drills SMD Series
Tip
Holder (L/D)
Applications
øDc range
1.5D / 1.5DF
ø0.4688" to ø1.2125" (ø12.0 to ø30.8mm) ø0.4688" to ø1.6732" (ø12.0 to ø42.5mm) ø0.5315" to ø1.0157" (ø13.5 to ø25.8mm) ø0.4688" to ø1.2125" (ø12.0 to ø30.8mm) ø0.4688" to ø1.2125" (ø12.0 to ø30.8mm) ø0.5315" to ø1.0157" (ø13.5 to ø25.8mm) ø0.4688” to ø1.2500” (ø12.0 to ø31.75mm ø0.4688" to ø1.1875" (ø12.0 to ø30mm) ø0.4688" to ø1.1875" (ø12.0 to ø30mm) ø0.5315" to ø1.0157" (ø13.5 to ø25.8mm)
1.5XD
Mounted
M / 3D / 3DF 3XD L / 5D / 5DF 5XD D / 8D / 8DF 8XD 12D 12XD
General Steel
Front screw clamp design
Replaceable Head MTL
Radial serration provides steady and precise clamping
Head
1.5D / 1.5DF
Specially surface-treated body for high wear and rust resistance
MultiDrill design + dedicated coated grades
1.5XD
Stainless Steel, Super Alloy, Cast Iron
Replaceable Head MEL Replaceable Head MTL-C -C
M / 3D / 3DF 3XD L / 5D / 5DF 5XD D / 8D / 8DF 8XD 12D 12XD
Oil holes are directed at cutting lip and chips
Holders
J
Ŷ Features
M / 3D / 3DF 3XD Non- Ferrous, Aluminum Alloys L / 5D / 5DF 5XD D / 8D / 8DF 8XD
Indexable type drill with exchangeable drill head, which has a radial serration design, for high precision and strength. An exchangeable drill head provides a new cutting edge, higher productivity and cost ef ciency with easy tool management. Regrinding allowance of 0.059” to 0.118” ( 1.5mm to 3mm ) makes further tool cost reductions possible. * Regrinding is available only for MTL/MEL/MB Type
NAL Replaceable Head NAL
1.5D 1.5XD
M / 3D / 3DF 3XD L / 5D / 5DF 5XD D / 8D / 8DF 8XD 12D 12XD
Spot Facing
Replaceable Head MFS
Ŷ Tool Life and Cost Ɣ Comparison of tool life
Ɣ Total tool comparison when machining 1,000 workpieces
Ɣ Conclusion
(1) Dedicated coating and substrate (2) With regrinding not required, the tool can be used until maximum wear occurs.
100%
For regrinding purposes, brazed drills are only used for 50-70% of their actual tool ife potential. MTL reaches 100%!
Shorter tool change time! MTL has double the tool life of brazed drills!
Regrindable (x4)
New Drill
Regrindable (x4)
2 times the tool life!
120
Reduced costs!
New Drill
Drill tolerance and tool life
100
Regrindable (x4)
are relatively low after regrinding
Ɣ Workpiece Example
50%
80
New Drill
10 drill heads
60
Bore dia.: ø0.709”, depth: 1.97”
Regrindable (x4)
40
New Drill
MTL Insert: SMDT 1800MTL Holder: SMDH 180M Part Material: Machine component Carbon Steel Wet
Regrindable (x4)
Holders
20
New Drill
0
0
MTL
MTL
Brazed Drill
Brazed Drill
Drilling Precision Ŷ
Tool Strength Ŷ Ɣ Durability Comparison
MTL Normal wear
MTL
Brazed Drill Competitor's Product B Competitor's Product A
0.7126
MTL
0.7106
After 900 holes (equivalent to 112ft)
Competitor's Product A: Large amount of wear
Brazed Drill
0.7086
0.7066
0 0.008 0.016 0.024 0.032 0.040 0.048 Feed Rate at which Drill Was Damaged f ( IPM )
After 900 holes (equivalent to 112ft)
Competitor's Product B: Shoulder breakage
0
200
400
600
800 1000
No. of Holes
Part Material
: Carbon Steel, O.D.: ø0.709”
Part Material
: Carbon Steel, O.D. : ø0.630”
Cutting Conditio n s : v c =262 SFM
Cutting Conditions : v c =230 SFM, f =0.010”
Hole Depth 1.50” (through), wet
Hole Depth : 1.50”
After 670 holes (equivalent to 82ft)
Ŷ Recommended drilling method for 12D: Use a collet, hydro chuck or milling chuck to hold the 12D drill body (tapered collet chuck cannot be used)
(1) Drill a guide hole with SMDH żżż M (3D holder) + MTL (head) Ɣ Use a 3D drill body and a drill head with the same diameter as the 12D (same cat. no.) when drilling the guide hole.
(3) Increase spindle speed until the set spindle speed is reached, then start drilling
*On some NC machines, the feed command may be activated before the set spindle speed is reached, so it is recommended to enter a dwell sequence before the feed command.
H = Drill diameter × 1 to 1.5 times the depth
Increase rotation speed
H
(2) Feed the SMDH żżż -12D (12D holder) + MTL Type (head) through the guide hole at a low spindle speed Ɣ Spindle speed: 500 RPM Ɣ Feed rate: 39.37 IPM to 78.74 IPM
(4) After drilling, rotation speed is reduced and the drill is retracted from the work material Ɣ Spindle speed: 500 RPM Ɣ Feed rate: 39.37 IPM to 78.74 IPM
*If the drill is inserted into the guide hole at the set cutting speed, peripheral run-out may cause damage to the drill's peripheral edges.
*Retracting a drill from the work material at a high spindle speed, is dangerous as doing so may result in breakage due to runout.
Stop 0.040” away from the guide hole depth
1
Change rotation speed to 500 RPM
J96
Made with FlippingBook flipbook maker