Fräswerkzeug mit Schrägungswinkelübergang

Details

Veröffentlichungs-Nr.

EP3819056

Aktenzeichen

EP19207415

Anmeldetag

6. November 2019

Veröffentlichung

17. Mai 2023

Erteilung

17. Mai 2023

Rechtsraum

EP

IPC

B23C5/10

Abstract

The invention relates to a milling tool (1) having a front end (2), a rear end (3), and a longitudinal axis (C) extending therebetween, wherein the milling tool comprises a shank portion (4) and a cutting portion (5). The cutting portion extends along the longitudinal axis from the front end towards the shank portion, and comprises a plurality of teeth (6) separated from each other by a corresponding number of flutes (7), wherein the teeth (6) extend axially along the cutting portion (5) following a curved helical path around the longitudinal axis. Each tooth (6) extends at a first helix angle (α) from the front end (2) to a helix transition (8), and at a second helix angle (β) from the helix transition towards the shank portion. The second helix angle (β) is greater than the first helix angle (α) by at least 2° and at most 15°. The first helix angle (α) fulfills 33° ≤ α ≤ 50°, whereas the second helix angle (β) fulfills 40° ≤ β ≤ 55°, and the helix transition (8) is axially located within a distance, from the front end (2), of 0.2 to 0.7 of the longitudinal length of the cutting portion (5).

Anmelder

Firma

AB Sandvik Coromant

Land

🇸🇪 Schweden

Fachgebiete