2017 09 EGAG ani Aussenschlagstempeln stroke stamping V1 0

Stroke stamping sheet metals The GROB stroke stamping process is based on a straightforward and universally applicable principle: the total forming effort is axial to the workpiece and broken down into numerous forming increments spread along the entire cylindrical length of the zone being formed. BENEFITS - Minimal spline run-out - Affordable tooling costs - Superior spline and gear quality - Surface work-hardening - Ability to form high-strength steels - Surface finish Ra 0.4 ~ N5 - No disruption of material grain flow As mentioned earlier, the splined length is normally generated by the axial infeed of the workpiece. In certain cases, however, the entire spline length can be produced by vertical infeed towards the centreline. As its name implies, the applied process is a pure forming technique during which no swarf is generated. In contrast to other GROB spline forming processes, the tools (punches) do not rotate in a planetary motion around the roller spindle, but „stamp" the splines at a 90 degree angle to the workpiece. As there is practically no spline fillet, splining can be run very close to shoulders or steps. It is also possible to leave or form a solid ring at the end of the spline without further operations, eliminating the need to manufacture or install additional components. Applications POWERTRAIN - sheet metal www.ernst-grob.com