| 摘要 |
A method for cold-forming rolling elements in the form of bodies of revolution with external rolling surfaces having straight or curved generatrices extending between portion of relatively large and relatively small diameter uses a generally cylindrical blank. The diameter of the blank is substantially equal to the greatest diameter of the element to be formed. The blank is forced into a die cup having an internal profile which is identical to the rolling surface profile, against a counter-force which increases as the blank is forced into the cup. The penetration of the blank into the cup is halted at a predetermined stage. The invention is applicable to forming bearing rollers. |
