| 摘要 |
<p>TITLE OF THE INVENTION IMPROVED FORMING ROLL FOR ROLLING CYLINDRICAL METAL BODIES FROM CYLINDRICAL ROD STOCK, AND A METHOD OF MAKING THE SAME An improved forming roll for forming cylindrical metal slugs from cylindrical rod stock is characterised in that the roll has a helical groove defined by a rib the radial height of which and the axial dimension of which increase along the length of the roll, the groove between successive helices of the rib having a cylindrical base the axial length of which is so dimensioned that the volume of metal enclosed by the groove, in use, is substantially constant. There is also described a novel method for making such a forming roll.</p> |
