Twist drill

Details Twist drill Twist drill

B - Operations, Transporting

23

B

B23B 51/02 (2006.01)

Patent

CA 2168889

The invention relates to a twist drill, especially for metals. It has a substantially cylindrical basic component (1) divided into a shaft (2) and a cutting section (3), the central longitudinal axis (5) of which is the axis of rotation of the twist drill. Several swarf grooves (4,4') are made in the cylindrical surface of the basic component (1) which extend spirally and continuously from the shaft (2) to the drill tip (6) and bound a swarf chamber (35). The feature of the twist drill is that its drill core diameter tapers continuously from the drill tip (6) to the shaft (2).

La présente invention concerne un foret hélicoïdal, conçu en particulier pour les métaux, qui comporte un corps de base (1) sensiblement cylindrique, subdivisé en une tige (2) et un élément de coupe (3), dont l'axe longitudinal médian (5) est l'axe de rotation du foret hélicoïdal. Dans la surface latérale du cylindre du corps de base (1) sont ménagées plusieurs rainures à copeaux (4, 4') qui s'étendent en continu de manière hélicoïdale de la tige (2) à la mèche (6) en délimitant chaque fois un logement pour les copeaux (35). Ce foret hélicoïdal est caractérisé par le fait que le diamètre du noyau diminue régulièrement de la mèche (6) à la tige (2).

Affiliated with

Also associated with

Rating

Twist drill does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Twist drill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Twist drill will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1827917