| 摘要 |
An edge-finishing device comprises a drive unit (L), a holder (M) and a notched tip (N). The tip combines a number of geometric features known as land radius (Y), flank faces (K), flank radii (I) and root radius (J). Typical useage of the device requires a tip to be fitted into the holder, the tip being then offered against the workpiece using the flank faces for guidance. The land radius determines the contact area. The tip impacts against the workpiece and bends the protrusions over. The flank radii then beat the protrusions thin enough for them to break off or be driven off. The tip continues to impact until the finished edge conforms to the root radius. |
