A method for mounting a flat laminar spring in a lower plate with a direct riveting. (Machine-translation by Google Translate, not legally binding)

摘要

A method for mounting a flat leaf spring on a bottom plate with a direct rivet with which the rivets for riveting are formed by pressing on the bottom plate by an operation with a rivet-forming die and in the riveting process a saddle is inserted in the recesses formed below the protuberances, the flat spring being pressed against the lower plate by means of a tread, characterized in that according to the invention this problem is solved because the protuberances (8) are obtained by extracting in a press operation the material of the bottom plate (6) with a tool or matrix for forming rivets with a slight rounding, because the step (5) of the riveting tool is completely rounded at its end (12), projecting from the base (3) a 50 % more than what corresponds to the height of the recesses (9) and because the inner diameter of the tread (2) is approximately 60% greater than the diameter of the protuberances of rivet (8). (Machine-translation by Google Translate, not legally binding)