| 摘要 |
A toolholder (22) has a head portion (34) including a slot (36) separating the head portion into a lower extension (44a) with a lower seat (48) and an upper extension (44B) with an upper seat (46) to retain a cutting insert (24). The head portion contains a coolant entrance passage (60), which receives coolant from a coolant source, and a coolant delivery passage (90), which discharges coolant toward a cutting insert. The cutting insert includes a top surface (145) with an upwardly extending protuberance (146) that can be engaged by the toolholder to rigidly mount the cutting insert in the head portion of the toolholder. The cutting insert further includes a coolant channel (154) formed in the top surface of the cutting insert that is positioned directly opposite of the coolant discharge to enhance the flow rate of the coolant delivered to the cutting insert-workpiece interface. |
