Drill head for deep hole cutting
Assigneebotek Präzisionsbohrtechnik GmbH
InventorTakuji Nomura
Life of this patent
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Abstract
A drill head for deep-hole drilling includes cutting blade tips brazed to cutting chip discharge ports opened on a head distal end surface, guide pads mounted on a plurality of positions of the circumferential surface at the head distal end side, and a hollow inside portion made into a cutting chip discharge passage communicating with the cutting chip discharge ports. A guide pad portion having an arc surf ace that slide-contacts with the inner circumference of a cutting hole is formed on the outer end surface of the circumferential portion cutting blade tip.
Claims10
A drill head for deep-hole drilling including one or a plurality of cutting blade tips mounted by brazing to face a cutting chip discharge port opened on a head distal end surface, guide pads mounted on a plurality of positions of a circumferential surface at the head distal end side, and a hollow inside portion made into a cutting chip discharge passage communicating with the cutting chip discharge port, wherein
- a guide pad portion having an arc surface that slide-contacts with the inner circumference of a cutting hole is formed on the outer end surface of the cutting blade tip taking charge of cutting a circumferential side.
Dependencies are inferred from the claim text.