| 摘要 |
A cutting tip (10) for a mechanical excavator comprises a tip body (11) having a generally pointed distal end (12), a proximal end (13) spaced from the distal end, and a wall (14) that diverges outwardly from the distal end towards the proximal end. The wall (14) is profiled to induce a non-uniform stress profile on the material impacted by the cutting tip to facilitate radial cracking in that material. In one form, the wall (14) is profiled to include a plurality of ridges (15) and intermediate regions (16), with the ridges (15) being arranged to induce a higher stress concentration in the impacted material than the intermediate regions (16). |
