Accuromm Central Europe

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Towards a new realm of high-efficiency aluminium machining!

Highly efficient machining of aluminium alloys with 'low-resistance thinning’ + 'double margin’.

High feed rate of drill diameter x 15% (mm/rev) due to low-resistance thinning

Stable machining accuracy due to double margin

Improved welding resistance by DLC coating

Amazing facts!

── Introducing ideas and technologies ──

The TFH drill ensures low thrust and stable machining accuracy thanks to special thinning and double margins, and enables high feed rates equivalent to 15% of the drill diameter.
Highly efficient machining contributes to increased productivity in a wide range of application areas.

Low cutting resistance (thrust)

Good!

Diameter expansion allowance

Good!

This is the point!

Low cutting resistance and stable machining accuracy

Excellent!

  • Special pockets: Wide chip pocket for excellent chip evacuation performance
  • Double margin: Ensures stable machining accuracy
  • Thinning shape: Newly developed thinning shape with high centripetal force and chip evacuation and low resistance
  • DLC coating: Excellent anti-welding performance for aluminium alloys

Development / product concept

„Current status and challenges”

  • High efficiency and reduced cutting resistance are essential in drilling in order to reduce investment in equipment and the size of machine tools. Conventional twist drills have high thrust and poor chip evacuation, making it difficult to reduce machining time

“Development points”

  • The TFH drill features a newly developed thinning shape for low thrust and a special flute shape for improved chip evacuation, enabling high feed rate of drill diameter x 15% (mm/rev)
  • The double margin ensures stable machining accuracy and contributes to improved productivity in a wide range of applications

Product specification

Tool name

TFH drill

Target process

Aluminium general hole (solid hole)

Setting diameter

ø4 mm ~

Cutting conditions

Cutting speed: Vc = 50~150 m/min
Feed: f = 0.05D~0.15D mm/rev

Machining accuracy

Hole diameter: IT9 grade
Surface roughness: Rz25
Machining hole depth: L/D≦5
Concentricity: ø0.6 mm

Transmission case

Cylinder head