Coupling spline for synchronising unit has individual teeth formed by reshaping ring-shaped body so that plastic forced material shaping sets region of first end side back between tips of teeth

摘要

The coupling spline has teeth (3) projecting out from a circumferential surface between a first end side (6) and a second end side (7) of a ring-shaped body (2). At least one region (14, 15, 16) of the first end side is set back between the tips (9) of the teeth through a plastic forced material shaping which continues in the surface of the cylindrical surface towards the second end side . The transition area (13) is flat and is no wider than 0.5 mm in the longitudinal direction. The regions are set back at least 0.1 mm from the first end side at the lowest point.