Compression tool for fastening spring-back stop ring to piston rod of shock absorber of motor vehicle

The invention relates to a pressing tool 1 for fastening a spring-back stop ring 4 to a piston rod 5 of a shock absorber, comprising a first workpiece 2 and a second workpiece 3, the first workpiece 3 axially supporting the spring-back stop ring 4 and the second workpiece 3 being displaced axially in the direction of the first workpiece 2 relative to a longitudinal extension axis L during the fastening process, the spring-back limiting ring (4) is partially pressed into a circumferential groove (7) formed on the piston rod (5) by means of the pressing surface (6) of the second workpiece, as a result of which a non-separable, form-fitting connection is formed between the piston rod (5) and the spring-back limiting ring (4). The invention is characterized in that the press-in surface 6 of the second workpiece 3 is designed as a convexly shaped ring, the convexly shaped ring being partially separated by at least one recess 8. 本发明提出了一种用于将回弹限位环4紧固在减振器的活塞杆5上的压紧工具1，其包括第一工件2以及第二工件3，其中在紧固过程期间，第一工件3沿轴向支撑回弹限位环4，并且第二工件3相