DRILL BODY AND DRILL

DRILL BODY AND DRILL

A drill body (4) and a drill (2) are disclosed. The drill body (4) has a rotational axis (10) and comprises a central chip flute (20) extending along a periphery of the drill body (4). A central chip flute cross section has a centre line (26) extending in a plane extending perpendicularly to the rot...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: CARLBERG, Håkan, HEMPH, Mr. Rasmus
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BORING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
TRANSPORTING
TURNING
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Beschreibung
Zusammenfassung:A drill body (4) and a drill (2) are disclosed. The drill body (4) has a rotational axis (10) and comprises a central chip flute (20) extending along a periphery of the drill body (4). A central chip flute cross section has a centre line (26) extending in a plane extending perpendicularly to the rotational axis, and through the rotational axis (10). The central chip flute cross section has a depth, seen along the centre line (26), and a width, seen perpendicularly to the centre line (26). The central chip flute cross section has a maximum depth Dp within a range of Dp = 0.75 x D/2 to Dp = 0.90 x D/2, and a maximum width W within a range of W = 0.75 x D/2 to W = 0.90 x D/2, wherein the maximum width W extends symmetrically about the centre line (26).