| 摘要 |
A method for the manufacturing of circular washers for locking from blanks (21), a washer having a central hole, a first side comprising a pattern of radially extending teeth and a second side comprising a pattern of radially extending cams. The method is especially characterized in the steps of-producing a washer blank (21) having an annular shape;-introducing the washer blank into a die assembly (1) for forming a closed shaping space by a lower die portion (12), an opposing upper die portion (13), a central die portion and a support piece , the central die portion extending through a washer blank central hole;-forming the blank to a washer by mutual movement of said lower and upper die portions;-opening the closed shaping space to extract the formed washer. The invention also relates to a device for performing said method and a washer. |
