| 摘要 |
<p>The rotary chipping head comprises a chipping head body mountable for rotation about an axis in an operative direction. The body has a face at one end of it delineating the end of the body. The face extends normal to the axis and the body has an outer periphery extending about the axis disposed in an axial direction inwardly from the face. A knife structure is detachably mounted on the periphery of the body having one cutting edge extending in an axial direction and effective to cut chips from a workpiece as a workpiece is advanced into the knife structure and a second cutting edge producing a cut in the workpiece in a plane disposed perpendicular to the axis. An end-located facing knife is mounted on the end of the body having a third cutting edge disposed normal to the axis of the body for producing a facing cut in a workpiece which trails the cut produced by the second cutting edge. The body is rotated in an operative direction, and an anvil portion is mounted on the end of the body disposed in a circumferential direction intermediate the second and third cutting edges operable to press against the workpiece immediately prior to the workpiece being cut by the third cutting edge.</p> |
