2017 09 EGAG ani Drücken Kaltwalzen Blech spinning cold f sheet metal V1 0

Cold forming sheet metal The GROB cold forming process is based on a straightforward and universally applicable principle: the total forming effort needed is broken down into numerous forming increments spread along the entire cylindrical length of the zone being formed. Benefits - Very short forming cycles - Affordable tooling costs - Superior spline and gear quality - Surface work-hardening - Ability to form high-strength steels - Compensation for the elastic recovery behaviour of the material This subdivision means that the forces needed to achieve superior forming rates and high degrees of deformation are relatively low, allowing ready-to-install precision spline geometries to be produced. As its name implies, the applied process is a pure forming technique during which no swarf is generated. Using rolling tools a blank is formed onto a roller mandrel (support die). Depending on the requirements, different process applications are employed. These include splining from cup-shaped blanks, spinning and splining from disc-shaped blanks, or direct splining from disc-shaped blanks (direct cold reduction). As a result, a diversity of profile geometries can be produced on internally and/or externally splined workpieces. Applications POWERTRAIN - sheet metal ENGINE TECHNOLOGY - sheet metal AUTOMOTIVE ENGINEERING - sheet metal BRAKE DISCS - sheet metal www.ernst-grob.com