A method of manufacturing a piston for a reciprocating working machine, a piston made by the method, and a reciprocating working machine having at least one piston produced by the method

摘要

Method for producing a piston (8) having a central longitudinal piston axis (19) and a piston circumference (9) with a circumferential seal in the form of a circular cup sleeve (16), the cup sleeve (16) having a shape that has the functional contour of the installed state Piston (8) held and in a radial region (17) radially aligned to the piston longitudinal axis (19) and a leg bent in an axial region (18) by approximately 90 °, approximately parallel to the piston longitudinal axis (19). In order to reduce manufacturing steps and to achieve a precise fit of the piston (8) into a cylinder (2, 31) of a reciprocating piston working machine (1), it is provided that the cup sleeve (16) is included as a flat or curved preform (21, 21a) a radial region (17a, 17b), which forms the approximately radial limb of the cup sleeve (16) aligned with the piston longitudinal axis (19), is attached to the piston (8), and then a peripheral region (18a, 18b) is deformed into the axial region (18) of the cup sleeve (16) which is bent by approximately 90 ° in order to achieve the functional contour of the installed state of the cup sleeve (16).