| 摘要 |
A milling head (1) has a central milling cutter (11) with central picks (111) and an annular milling cutter (12) with annular picks (121). Both cutters are coupled with each other and arranged coaxially with respect to the longitudinal axis (x) of a drive shaft. The central picks are disposed within a central circle, while the annular picks are disposed within an outer circle spaced from the central circle by a middle circle. Both circles are concentric with each other with respect to the drive shaft longitudinal axis. An independent claim is also included for a method for machining the head of a pre-manufactured pile. |
