| 摘要 |
A cutting element 1200 includes an inner rotatable (dynamic) cutting element 1210 which is partially disposed in, and thus, partially surrounded by an outer support (Static) element 1220. Outer support element 1220 includes a bottom portion 1222 and a side portion 1224. Inner rotatable cutting element 1210 includes a cutting face 1212 portion disposed on an upper surface of substrate 1214. Inner rotatable cutting element is disposed within the cavity defined by the bottom portion 1222 and side portion 1224. Cutting face 1212 includes surface alterations 1272 on its top surface. While the surface alterations 1272 shown are in a serrated manner with generally sharp edges, it is within the scope of the present disclosure that such surface features used in the cutting elements of the present disclosure may take on a variety of forms (i.e., geometric shapes, waves, sharp, smooth, etc.). A conical bearing surface for the insert is also disclosed. |
