Drill Bits, End Mills

Image Part Number Description / PDF Quantity Rfq
TL1004

TL1004

Bantam Tools

END MILL CARBIDE 0.031"

34

DBC56-1

DBC56-1

Capital Advanced Technologies, Inc.

DRILL BIT CARBIDE 0.047"

0

TL1000

TL1000

Bantam Tools

END MILL CARBIDE 0.125"

1

TL1010

TL1010

Bantam Tools

END MILL CARBIDE 0.010"

26

BN1004

BN1004

Bantam Tools

END MILL MODELING BIT BUNDLE

1

TL1008

TL1008

Bantam Tools

END MILL CARBIDE 0.005"

4

BN1010

BN1010

Bantam Tools

END MILL CARBIDE ASSORTED

8

TL1007

TL1007

Bantam Tools

END MILL CARBIDE 0.005"

8

2072

2072

Adafruit

DRILL BIT CARBIDE 0.020"

0

2121

2121

Adafruit

DRILL BIT CARBIDE 0.043"

0

DBC55-1

DBC55-1

Capital Advanced Technologies, Inc.

DRILL BIT CARBIDE 0.052"

0

TL1001

TL1001

Bantam Tools

END MILL CARBIDE 0.063"

11

TL1008-10

TL1008-10

Bantam Tools

END MILL PCB ENGRAVD 0.005" 10PK

4

DBC64-1

DBC64-1

Capital Advanced Technologies, Inc.

DRILL BIT CARBIDE 0.036"

0

DBC51-1

DBC51-1

Capital Advanced Technologies, Inc.

DRILL BIT CARBIDE 0.067"

0

TL1005

TL1005

Bantam Tools

END MILL CARBIDE 0.016"

25

DBC69-1

DBC69-1

Capital Advanced Technologies, Inc.

DRILL BIT CARBIDE 0.029"

0

TL1012

TL1012

Bantam Tools

END MILL CARBIDE 0.016"

9

BN1005

BN1005

Bantam Tools

END MILL MODELING BUNDLE

0

TL1002

TL1002

Bantam Tools

END MILL CARBIDE 0.125"

26

Drill Bits, End Mills

1. Overview

Drill bits and end mills are cutting tools used in machining processes for material removal. Drill bits primarily create cylindrical holes, while end mills perform milling operations for complex shapes and surface finishing. These tools are critical in modern manufacturing, enabling precision engineering in industries ranging from aerospace to consumer electronics.

2. Main Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Twist Drill BitsHelical flutes for chip evacuation, point angle geometryMetal drilling in automotive components
Center DrillsCombination drill/countersink for precise hole centersAerospace turbine blade manufacturing
Flat End MillsFlat cutting edges for slotting and contouringMold making for injection molding
Ball Nose End MillsSpherical cutting tips for 3D profilingDie sinking in hardened tool steel
Indexable Insert DrillsReplaceable carbide inserts for deep hole drillingOil and gas exploration equipment

3. Structure & Composition

Typical drill bits feature: - Shank: Cylindrical gripping portion (straight or tapered) - Neck: Reduced diameter section for chip clearance - Flutes: Helical grooves for chip evacuation - Cutting Point: 118 -135 angle with primary/secondary cutting edges

End mills incorporate: - Helical Flutes: Variable pitch for vibration reduction - Cutting Edges: Carbide or HSS with PVD coatings - Center-cutting: Allows plunge cutting capabilities

Material compositions include High-Speed Steel (HSS), Solid Carbide, and Cemented Carbide with TiAlN/AlCrN coatings.

4. Key Technical Parameters

ParameterSignificanceTypical Range
Diameter ToleranceEnsures dimensional accuracyh6 to h10
Helix AngleImpacts chip evacuation and cutting forces15 -45
HardnessWear resistance specification60-80 HRC
Surface RoughnessDetermines finish quality0.1-1.6 m Ra
Max RPMSpeed capability limitation500-20,000

5. Application Fields

Major industries include: - Aerospace (engine components, structural parts) - Automotive (engine blocks, transmission cases) - Die & Mold (complex cavity machining) - Electronics (PCB drilling) - Energy (oil drilling equipment)

Typical equipment: CNC machining centers, drill presses, turning centers, and multi-axis machines.

6. Leading Manufacturers & Products

ManufacturerProduct SeriesKey Features
Sandvik CoromantCoroDrill 860Adjustable margin drill for composites
KennametalKSEM End MillShock-resistant geometry for titanium
Mitsubishi MaterialsVP15TF CarbidePVD coating for high-temp alloys
Guhring930 Straight FluteMicron precision for medical devices
IscarCHUCKIN' SeriesModular drill/mill combination tools

7. Selection Recommendations

Key considerations: 1. Material compatibility (workpiece hardness/abrasiveness) 2. Machine tool specifications (speed/power constraints) 3. Cooling system requirements (through-tool vs external) 4. Tolerance requirements (dimensional vs form tolerances) 5. Cost-efficiency balance (tool life vs initial cost)
Example: When machining Inconel 718 aerospace components, select solid carbide end mills with AlCrN coating and 35 helix angle for optimal chip control.

8. Industry Trends

Current developments include: - Nanocomposite coatings for extended tool life - Digital twins for predictive tool maintenance - Hybrid manufacturing integration (additive + subtractive) - Sustainable manufacturing focus (reduced cutting fluids) - AI-optimized toolpath generation for adaptive machining

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