| 摘要 |
<p>An abrasive grinding wheel (1) which is flat or has a depressed center, comprising an abrasive discoidal element (2) which can be associated, substantially coaxially, with the free end of a rotating shaft of a grinder, comprising at least one substantially central through hole (3), a first face (4) which can be arranged - in the assembly configuration - so as to be substantially directed toward the machine and which forms the back of the discoidal element (2), and a second face (5), which is opposite to the first face (4), the discoidal element (2) comprising at least one first layer (6) of a discoidal abrasive mix defined at the first face (4) and at least one second layer (7) of discoidal abrasive mix defined at at least one portion of the second face (5), the first and second layers (6, 7) of abrasive mix being mutually superimposed and jointly associated. The particularity of the invention resides in that the second layer (7) of abrasive mix comprises an inside diameter that is substantially larger than the diameter of the through hole (3).</p> |
