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© Wright Manufacturing Services Limited (WMS) - 2011

The GROB cold forming process is based on a straightforward and universally applicable fundamental principle: the total forming effort needed to generate splines in sheet metal workpieces is broken down into numerous forming steps spread along the entire cylindrical length of the zone to be formed. This means that the forces needed to achieve superior forming rates and high degrees of deformation are comparatively low, allowing ready-to-install precision spline geometries to be produced.

As its name implies, this applied technique is strictly a forming process during which no chip forming is involved.

COLD FORMING MACHINES

The GROB slotting process is a universal and extremely economical one for stamping, coining and forming of cup and ring shaped sheet metal blanks and preforms.

Typical applications include various slotting/stamping, coining and forming operations on clutch disc carriers in automatic vehicle transmissions / clutch disc carriers in a wide range of hydraulic and magnetic clutches.

Essentially all slotting / stamping, coining and forming operations (bending) of circular sheet metal parts.

The GROB S8 slotting machine is used for this process.

SLOTTING / STAMPING MACHINES

All tools used on GROB machines are developed and manufactured in the in-house tool facility in accordance with the specific requirements of the materials and applications involved. In-depth expertise, combined with state-of-the-art tool making equipment  and continuous research and development enable GROB to provide you with optimal tooling delivered in the shortest possible delivery times.

ROLLING TOOLS

Ernst Grob AG - Mannedorf, Switzerland

Ermst Grob AG is a family owned Swiss enterprise situated in Switzerland, in the Männedorf area near the Zürichsee, with additional production and sub-contract facilities in Oetwil am See.  The Company has a totally global business and technology focus. Ernst Grob AG designs, develops and manufactures machines for cold-forming of cylindrical components, with or without teeth, and slotting machines for operations on cylindrical hollow components. The Company  is also able to offer its customers specific solutions, ranging from individual, manually  operated machines to fully automated, high-volume, production lines for complete machining.  

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