The miniature drill comprises a drill tip (41) and a drill body (42).
Disclosed is a micro-drill, comprising a drill body (2) and a drill tip (1) which is formed at one end of the drill body (2).
The drill point includes axial relief surfaces (198).
A long twist drill comprises a shank (12) and a drill body (14) having a drill tip (16).
The drill may be modular having a removable tip body or the drill may be of a solid configuration.
Tooth-shaped projections (12) are provided on the tip of the drill (11).
In one particular embodiment, the drill bit in the drill shaft is clamped on matching wedge-shaped fitting surfaces.
A method for producing such a drill point (125) is also disclosed.
The invention is intended to provide a drill capable of improving the accuracy with which the drill main body and the tip are positioned and capable of stabilized machining while maintaining the strength of the drill main body.
The above cutting tools include, in particular, a twist drill and a throw away tip.
A drill guide (20; 70), for guiding a drill bit towards a predetermined drilling location (62) on an object (64), comprises a guide body (22) defining a bore (26) for receiving a drill bit to be guided thereby.
In such a way, when the bore tip is worn by use, said tip can be recoated after sharpening without the nominal diameter of the drill tip substantially increasing, in particular even after being sharpened several times.
The tool comprises a straight body with a drill point (14) at the forward end, a shank (12) at the rearward end and a thread-form mill (16) between the drill point and the shank.
The drill tip (41) comprises two main cutting edges, two main tool faces and two auxiliary tool faces symmetrical with respect to the axial center of the miniature drill.
In addition, this small-diameter drill has a point where two or more grooves converge.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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