Choice of tool 3 - 20,0 2 - 5 × D c 9,5 - 30,4 3,5 - 5 × D c 12,7 - 58 2 - 4 × D c 60 - 80 2,5 × D c Delta-C R415.5 Delta R411.5 Coromant U R416.2 T-MAX U R416.9 67 71 75 See Rotating Tools catalogue See pages 142 - 149. 3 2 3 3 3 3 3 3 3 3 1 1 3 3 P M K 1-2 µm IT8-10 1-2 µm IT8-10 1-5 µm +0,3/-0,1 +0,4/-0,1 6-10 µm ±0,2 All types 3 2 3 3 3 3 2 2 3 2 3 3 3 3 3 3 Ordering information see page Tool – Cutting fluid: Internal External – Insert type – Tailor Made Yes – – Yes Yes – LCMX/WCMX Yes Yes – WCMX – – Yes – – Yes – Workpiece material – Steel – Steel, hardened – Stainless steel – Heat resistant alloys – Cast iron – Aluminium alloys Surface finish Ra Machine Cutting data Drill diameter, D c Drilling depth, l 4 D c l 4 Delta drill family U-drill family Hole tolerance Type of industry – Die & mould – Automotive – Heat ex. plates – Aerospace – Oil industry – General engineering 3 3 3 3 3 3 3 3 – 2 3 – 3 2 2 2 2 2 3 3 3 3 3 3 Solid carbide drills Brazed carbide drills Indexable drills 3 1 Good choice Less suitable choice
Transcript
Choice of tool
3 - 20,02 - 5 × Dc
9,5 - 30,43,5 - 5 × Dc
12,7 - 582 - 4 × Dc
60 - 802,5 × Dc
Delta-C R415.5Delta
R411.5Coromant U
R416.2T-MAX UR416.9
67 71 75 See Rotating Tools catalogue
See pages 142 - 149.
32
33
33
33
33
11
33
P
M
K
1-2 µm
IT8-10
1-2 µm
IT8-10
1-5 µm
+0,3/-0,1+0,4/-0,1
6-10 µm
±0,2
All types
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33
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22
32
33
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33
Ordering information seepage
Tool– Cutting fluid:
InternalExternal
– Insert type– Tailor Made
Yes––
Yes
Yes–
LCMX/WCMXYes
Yes–
WCMX–
–Yes
––
Yes–
Workpiece material
– Steel– Steel, hardened
– Stainless steel– Heat resistant
alloys
– Cast iron– Aluminium alloys
Surface finish Ra
Machine
Cutting data
Drill diameter, DcDrilling depth, l4
Dc
l4
Delta drill family U-drill family
Hole tolerance
Type of industry
– Die & mould– Automotive– Heat ex. plates– Aerospace– Oil industry– General engineering
3 3 3 33 3 3 3– 2 3 –3 2 2 22 2 3 33 3 3 3
Solid carbide
drills
Brazedcarbide
drills
Indexable drills
3 1Good choice Less suitable choice
Dc
l4
18,4 - 6550/100 × Dc
424.6
P
M
K
2 µm
IT10
YesYesYesYes
Yes
–
3 1Good choice = = Less suitable choice
– Cutting fluid:Internal
– Insert type
– Stainless steel– Heat resistant al-
loys
– Cast iron– Aluminium alloys
Machine– DHD machines– NC machines– Lathes– Most conventional
machines– Machining centres
– Special gun drillingmachines
Drill diameter, DcDrilling depth, l4
Ejector STS
Hole tolerance
Workpiece material
– Steel– Steel, hardened
Surface finish Ra
Tool
Choice of tool
Yes–
Cutting data
Ordering information seepage
See Rotating Tools catalogue83
22
22
22
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32
11
420.6
15,6 - 65100 × Dc
2 µm
IT10
Gundrills
428.9
0,98 - 35≤80 × Dc
0,1-3,2 µm
IT9
––––
Yes
Yes
Yes–
Yes–––
–
–
Yes–
See page 153
1
P
M
K
3 1
T-MAX UT-MAX UT-MAX P
IT9 IT9
3–
3–
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33
391.69A391.68A
25–270 mm 25–101 mm
IT6
3–
33
33
33
3–26 mm
391.37A
T-MAX U
IT6
3–
33
33
33
25–103,5 mm
T-MAX U
391.38A
IT7
3–
33
33
33
25–103,5 mm
T-MAX U
391.39A
Choice of tool for boring
Tool
ROUGHING-FINISHING
– Entering angle– Adjustable with
scale– Boring depth– Cutting fluid– Damped
– Type of boring
– Insert type
Workpiece material
– Steel
– Steel, hardened
– Stainless steel
– Heat resistant alloys
– Cast iron
– Aluminium alloys
Working areas– Internal– External
Good choice = = Less suitable choice
Hole tolerance
Machine– Machine type
Diameter
90°, 75°
–90°, 75°
–
92°, 75°
0,01 mm
92°, 75°
0,01 mm92°, 75°
0,01 mm
4 × Bar dia.
Internal
–
6 × DcInternal
Yes
13,5–40 mm
Internal
–
3,5 × D5mInternal
–
6 × DcInternal
Yes
All Types
Ordering information see page See Rotating Tools catalogue
See Rotating Tools catalogueCutting data
single edgetwin edge
step boringsingle edge
The Coromant Delta drill familiy
The Coromant Delta family of drills are highly productive tools, deve-loped for close tolerance production with high security within a wideapplication area.
• Excellent chipbreaking — close tolerances — good surface finish• Precision centering — no need for pre-drilling — tighter hole concentricity• Light cutting geometry — low feed force — low power consumption• Weak and thin workpieces can be drilled without deflection• Regrindable geometry• High penetration rate — high productivity
Coromant Delta-C drills R415.5 for diameters 3,00 – 20,00 mm• The solid carbide drill with PVD coating• TwinGrade (compound grade) for stainless steels• Chamfering drills for tapped holes M4 — M16• Recommended drilling depth 2–3 and 4–5 times the diameter• Drills with internal and external coolant supply are available• Whistle Notch shank according to DIN 6535 HE, cylindrical shank according to
DIN 6535 HA and drill design according to DIN 6537 as standard.
RequirementsThe Delta-C drill requires modern, high capacity machines and stable machiningconditions.When drilling in stainless steels always use internal coolant.
Coromant Delta drills R411.5 for diameters 9,50 – 30,40 mm• The brazed, carbide tipped drill, TIN-coated as standard• Optimized geometries and coatings for special applications• Recommended drilling depths 3,5 and 5 times the diameter• Shank designs: Cylindrical with flat (first choice) and Coromant Whistle Notch.
Cylindrical available as Tailor Made.• Different type of drills are available as Tailor Made e.g. shank size, coating,
chamfering insert, diameter and length.
TwinGrade™
GC1030
Coromant Delta-C drills
Coromant Delta-CCoromant Delta-C
Delta-C — the first choice in modern highperformance machinesSelf-centering drillNo need for pre-drillingGood surface finishEasy-to-regrind geometryDrill design according to DIN 6537Tolerance m7 to suit tapping operationsChamfering drills for M4 – M16 threads
Good clamping featuresCylindrical shank according to DIN 6535 HA (K).
For Hydro-Grip precision chucks.
Short design: Max hole depth: 2—3 x diameter
Long design: Max hole depth: 4—5 x diameter
Whistle Notch shank according to DIN 6535 HE (K)
(K = coolant holes)
A precision tool for high productivity hole making
Hole diameters 3,00—20,00 mm
P M K
P K
P K
Basic choice for mixed produc-tion steel, stainless and cast iron.
First choice in steel.Also for cast iron.
For high speeds in steel and castiron.
Grades
GC1020
GC1040
GC1010
Low speed centre performance
High speed peripheralperformance
PVD-coated
Two drills in one — the unique TwinGrade™ GC1030GC1030 for stainless steels is a PVD-coated compound grade forproductivity with long tool life in demanding stainless and duplex ste-els.The low feeds that are normally applied to stainless steel can now beraised substantially, maintaining good drilling performance. GC1030M
Brazed carbide drills Cylindrical shank with flat according to ISO 9766
R411.5
KM
Coromant Delta drills
5 x Dc
4 92 145 140
κr 70°
Drills in the diameterrange 10,0 – 20,0 mmare available asstocked standard insteps of 0,5 mm ingrade P20.
Stocked drills
= lengths have been modified (parenthesis = previous length)
Even more possibilities thanks to tailored design!If you do not find what you need in our comprehensive standard programme, choose the tool shape you require and we will tailor it for you to your dimensions.
– Quick quotation– Easy to order
– Competitive delivery
Chamfering insert for Coromant Delta drillsMax. chamfer size 1,5 x 45°
Drill dia. > 12,25 mm
L142.01-05 06 00 3113 030-304 ✩
Ordering code Spare parts Coromantgrade
Tension pin (Delivered with the insert).Insert H10
F
Ordering example: 5 pieces L142.01-05 06 00 H10F
Drills with the chamfering insert mounted are available asTailor Made.
10º3,8 0
- 0,2
11º2,5 ± 0,1
r=1
ø5 0- 0,02
4 ± 0,04
90º ± 15´45º ± 20´
0,4 ± 0,1 × 45º
6 ± 0,2
4 0- 0,2
Coromant Delta drills
For more information see page 4.
Coromant U
Cylindrical with flat- according to ISO 9766
Coromant Capto®
Varilock11)
Coromant Whistle Notch1)
2 x Dc3 x Dc4 x Dc
3 x Dc4 x Dc
3 x Dc4 x Dc
3 x Dc
Indexable drills with rigid helical design for high productivity
Lengths for hole depths: 2 x Dia., 3 x Dia. and 4 x Dia. As Tailor Made option: 5 x DiaHole diameters 12,7–58 mm
Dc mm12,7–58
Dc mm12,7–41
Dc mm12,7–41
Dc mm17,5–41,3
Compatible with ABS holders1)
3 x Dc4 x Dc
Dc mm17,5–41
andKM® coupling1)
Hole diameter from 58 mm downto 12,7 mm
Indexable insert economy andproductivity — no need for regrinding
Dc = 58 mm
Dc= 12,7 mm
Indexable drills
1)See Rotating Tools catalogue
Effective cutting fluid holeslocated along the periphery and following the helix — to allow optimum flute area and max cutting fluid flow. High stability shank
Drilling of cross coolant holes in dies – the high productivity solution
Sandvik’s STS drill and adaptor
Deep hole drilling
Deep hole drilling systemsWhen we talk about deep holes, we mean a high ratiobetween hole depth and hole diameter. The term “deepholes” originally referred to hole depths of over 5 × thediameter. Today, deep-hole drilling is a collective namefor methods for the machining of both short and deepholes.
Deep-hole drilling is the preferred method for drillinghole depths of more than 10 × the diameter, but becauseof the method’s high metal-removing capacity and preci-sion, it is also competitive for small holes down to 2 ×the diameter.
During drilling, it is important that the chips be brokenand that they can be transported away without jammingand affecting the drilled surface. In deep-hole drilling,cutting fluid supply and chip transport have been provi-ded for by the development of three different systemsthat permit trouble-free machining of hole depths ofmore than 100 × the diameter. The three systems are called: the Single Tube System(STS),the Ejector system (two-tube system) and the Gundrilling system.
Deep hole drilling
The Single Tube System, STS
The Single Tube System – STSThe first choice for high productivity
The single Tube System is based on external cutting fluid supply and internal chip transport. As a rule, the drill head isscrewed onto the drill tube. The cutting fluid is supplied via thespace beween the drill tube and the drilled hole. The cuttingfluid is then removed along with the chips through the drilltube. The velocity of the cutting fluid is so high that chip transport takes place through the tube without disturbances.
Since chip evacuation is internal, no chipflute is required in theshank, so its cross-section can be made completely round,which provides much higher rigidity than in the gundrillsystem. The productivity for the STS drilling is up to 5 timeshigher than for Gun drilling.
Steady restWorkpieceChuck
•
Seal
•
Drill tube support
•
Chip box
•
Coolant seal
••
•
Inlet for cutting fluid
•
Drill slide
•
Drill tube
•
Pressurehead
•
Drill bushing
•
Drill head
•
Preferred application1. High productivity2. Long workpiece3. Large diameters4. Difficult chipbreaking5. Stainless steel6. Low carbon steel7. Heat exchangers8. Uneven materials9. Long production runs10. Special machines for mass production
The Ejector system
The Ejector systemThe Ejector system consists of drill head, outer tube, inner tube, connector,collet and sealing sleeve. The drill head is screwed to the drill tube by means of a four-start square thread. The inner tube is 30 mm longer thanthe outer tube, up to drill diameter 65 mm. The drill tube and the inner tubeare attached to the connector by means of a collet and a sealing sleeve.
The collet and sealing sleeve must be changed for different diameterranges, i.e. drill tube diameters.
Drill bushing
•
Outertube
•
Collet
•
Steady restWorkpieceChuck
•
•
•
Inlet for cutting fluid
•
Sealing sleave
•
Connector for non-rota-ting tool•
Inner tube
•
Drill head
•
Deep hole drilling
Preferred application1. Economical and easy to apply to horizontal boring machines -
NC lates2. Chuck automates start from pre-drilled hole3. NC-lathes start from pre-drilled hole4. Machining centres with tool exchanger5. Transfer lines6. Easy machining materials7. No sealing problems
Deep hole drilling
The gun drill system
The gun drill systemThe gun drill system uses the oldest principle for cutting fluid supply. The cutting fluid is supplied through a duct inside the drill and delivers coolant tothe cutting edge, after which it removes the chips through a V-shaped chipflute along the outside of the drill. Due to the V-groove, the cross-section ofthe tube occupies 3/4 of its circumference.
When ordering gun drills the following must be stated:• Drill diameter, xxxxx in the ordering code.• Overall length l2 , AAAA in the ordering code.• If required, driver No., BBB in the ordering code.• Material to be drilled.• If the drill requires a solid carbide head or a tipped head.Ordering example for gun drill with solid carbide head Dc 1,90 mm, length250 mm with driver No 002 for drilling stainless steel:2 pieces 428.9-01900-0250-002 solid carbide head for stainless steel.
Other dimensions on request
Calculation of overall lengthBy using the diagram above, the correct overall length to be includedin the ordering code, can be calculated.l2 = Overall length with or without driver
Drill diameter: 0,98-35,00 mmHole depth: Over 100 × diameterHole tolerance: IT9Surface finish: Ra 0,1-3,20 µmCutting fluid: Neat oilTolerance: Dc = h6
dmm = d9
Dc = Drill diameterdmm = Tube diameterl2 = Overall length with or without driverl21 = Addition for regrindinglm = Depth of hole
l22 = Length of chip box with or without tool steadyl23 = Minimum clearancel24 = Soldering lengthl25 = Cylindrical length of tube
P M K P M K
With steady rest
153
Dimensions, mmOrdering codeDrilldiameter
Drilldiameter
Ordering code Dimensions, mm
SAFETY INFORMATION
Precautions when grinding and brazing of cemented carbide, see back inside cover.
Gun drillsSolid carbide and carbide tipped heads428.9
Gun drilling
140
Gun drilling
Dc mm dmm D1 l1 l2 l21 lc0,98- 1,94 4 – – 30 – – –
Ordering example: 1 piece sealing disc for drill diameter 1,95 mm
1) Oil supply units for drivers no. 002, 801, 802, 803 are stocked items.Oil supply units for other drivers on request.
Dc mm D1 l2
1,95- 6,24 20 35,70-20,50 32 46,25-32,00 40 4
24,61-40,00 90 4
428.9
Tool mounting Mounting direct into machine spindle
Oil supply units
Oil supply unit forautomatic toolchange
Gun drillPage 83
Oil supply unit
For drill diameter: 1,95-35 mm
Leak oil
Drilldiameter
Driver Maxrev
Maxpressure
Dimensions, mm
RPM
The sealing disc fits tightly onto the drill shank and must be held inposition in the chip box with a retaining device. This prevents the discmoving with the feed motion, which could cause chip obstruction.
