Fluted Drill and Fluted Drill Cutting Head Therefor
AssigneeIscar, Ltd.
InventorsGil Hecht, Danny Chen
Life of this patent
Estimating the term…
Abstract
A fluted drill has a drill body with a fluted drill cutting head removably secured thereto. The cutting head has two drilling portions facing axially opposite directions. In axial view, the cutting head has at least four through openings. Each drilling portion includes a plurality of head flute portions and a plurality of cutting head coupling portions.
Claims29
A fluted drill cutting head (14) comprising:
- two drilling portions (18A, 18B) facing axially opposite directions with respect to a head rotation axis (A),
- a plurality of cutting head coupling portions (19) and
- a plurality of head flute portions (42);
- wherein,
- in an axial view, the cutting head (14) has at least four see-through openings.
A fluted drill body (12) having a body rotation axis (B), the fluted drill body (12) comprising a clamping portion (16) at a forward end, a shank portion (62) extending axially rearwardly from the clamping portion (16) and body flutes (64) extending along the fluted drill body (12), the clamping portion (16) comprising a plurality of drill body coupling portions (69), each drill body coupling portion (69) comprising:
- a cutting head support surface (68) comprising leading and trailing support surface ends (82, 84);
- and
- an integrally formed clamping jaw (70) extending forwardly from the respective cutting head support surface (68), each clamping jaw (70) comprising:
- opposite inner and outer side surfaces (72, 74);
- front and back side surfaces (76, 78) extending between the inner and outer side surfaces (72, 74);
- a drive surface (86) located on the front side surface (76) and facing generally in a rotation direction (T),
- a body centering surface (88) located on the inner side surface (72) and facing inwards, towards the body rotation axis (B);
- and
- a pullout prevention member (58, 90) located adjacent a clamping jaw upper surface (80);
- the clamping portion (16) further comprising a drilling portion housing (96) located rearwardly of the cutting head support surfaces (68);
- wherein
- the body centering surface (88) is axially located between the pullout prevention members (58, 90) and the cutting head support surfaces (68).
Dependencies are inferred from the claim text.