Method For Fastening A Rebound Stop To A Piston Rod Of A Vibration Damper

A method for fastening a rebound stop to a piston rod of a vibration damper, comprising:

• positioning a rebound stop at a piston rod, wherein
• the rebound stop has a tubular portion that encompasses the piston rod in circumferential direction and is axially supported with respect to a longitudinal axis at a first tool component,
• the piston rod has a circumferential groove, and
• an axial position of the rebound stop is selected such that the tubular portion of the rebound stop at least partially covers the circumferential groove of the piston rod;
• at least partially pressing the tubular portion of the rebound stop into the circumferential groove of the piston rod so that a second tool component having a press-in surface for comes in contact by its press-in surface with the tubular portion of the rebound stop;
• wherein the first tool component and the second tool component carry out an axial relative movement with respect to the longitudinal axis of the piston rod directed toward one another so that a distance between the first tool component and the second tool component is reduced to a defined final dimension;
• exerting, by at least one tool component, an axially directed pressing force and a radially directed pressing force directed radially inward toward a center of the piston rod, on the tubular portion of the rebound stop and presses it into the circumferential groove of the piston rod,
• wherein a pitch angle of the press-in surface varies at least partially over an axial longitudinal extension of the press-in surface so that, as the distance between the first tool component and the second tool component decreases, a force ratio between the axially directed pressing force and the radially directed pressing force changes such that the axially directed pressing force decreases and the radially directed pressing force increases.