| 摘要 |
<p>A metal cutting tool (1) comprising an exchangeable cutting insert (2) having a body portion (3) and a cutting head portion (4); said cutting head portion comprising an upper rake surface (4a) and a front relief flank surface (4b), defining between them a cutting edge (4c); and a cutting insert holder (7) formed with a pair of clamping jaws releasably clamping said insert in said holder, a first of said clamping jaws (5) being located adjacent said rake surface, a second of said clamping jaws (6) being located adjacent a base edge (2a) of said relief flank surface, a projecting portion (6a) of said second clamping jaw extending beyond said base edge (2a); a coolant flow channel (8) formed in said holder having an inlet adapted to be coupled to a coolant flow supply; a downstream portion of said channel having an outlet formed in said projecting portion and being so formed that a coolant outflow from said outlet is directed substantially parallel to said relief surface. <IMAGE></p> |
