| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a deep hole drill tool and a cutting insert.SOLUTION: The present invention relates to a deep hole drill tool of the type that includes: a basic body; and a cutting insert having a cutting edge, which is formed between a chip surface (21) and a clearance surface (19). The chip surface (21) includes a chamfer surface (23) adjacent to the cutting edge (20) and the clearance surface (19), the chamfer surface (23) having a width (W) of at least 0.1 mm defined between two boundary lines (24, 25), and which, in each infinitesimal part along the cutting edge, forms an angle (γ) of at least 25° and at most 50° with a reference plane (RP) extending perpendicular to the center or rotation axis of the tool.</p> |
