| 摘要 |
A deep hole drill for chip-removing drilling in a workpiece includes a body which has a cutting head and an integral cutting part. The body defines a longitudinal axis of rotation and has a longitudinal internal channel which opens into an end face of the cutting head for receiving cuttings that are entrained in a cooling medium. A chip removing insert is disposed on the cutting head. A support pad and a guide bar are disposed on a generally cylindrical outer peripheral surface of the cutting head and are arranged in circumferentially spaced relationship to one another. Cooling ducts are formed in the outer peripheral surface and are oriented generally parallel to the axis. The cooling ducts are open at the end face for conducting cooling medium thereto. The cooling ducts are situated adjacent the support pad and guide bar, respectively, for cooling same. |
