Drill insert geometry having chip splitting groove

Details Drill insert geometry having chip splitting groove Drill insert geometry having chip splitting groove

B - Operations, Transporting

23

B

B23B 51/00 (2006.01) B23B 51/04 (2006.01)

Patent

CA 2441610

The present invention provides a novel drill insert having chipbreakers, or chip splitting grooves formed through the cutting surface. The cutting tool insert has a specialised geometry including a chip splitting groove formed at a negative rake angle. The chip splitting grooves increase the cutting efficiency of the tool while allowing the edge strength to be increased while also allowing higher feed rates.

L'invention concerne une nouvelle plaquette rapportée de perçage présentant des brise-copeaux ou des rainures de répartition des copeaux formés par les surfaces de coupe. La plaquette rapportée pour outil de coupe présente une géométrie particulière comprenant une géométrie particulière avec rainures de répartition de copeaux formées à un angle de raclage négatif. Les rainures de répartition de copeaux augmentent le rendement de coupe de l'outil, tout en permettant, d'une part, d'accroître la solidité des arêtes et, d'autre part, d'avoir des vitesses d'avance plus élevées.

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