| 摘要 |
A cold rolling method and apparatus for forming an annular workpiece ( 10 ) with an outer surface ( 11 ) having a given contour and an inner surface ( 12 ) having a given contour, starting from an annular blank. A rotatable forming mandrel ( 21 ) has a working surface ( 21 a) with a contour corresponding to that of inner surface ( 12 ) to be formed. A forming die ( 51 ) has a cavity ( 52 ) with an inner working surface ( 53 ) in form of a surface of revolution corresponding to the outer surface ( 11 ) to be formed. |
