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External forming: High-precision splines made easy

New possibilities for the efficient production of complex components - with our Grob cold forming process and Grob roll forming.

Cold forming

Cold forming

With our Grob cold forming process, we facilitate the production of complex geometries. By dividing the forming effort into numerous small steps, high degrees of forming can be achieved even with high-strength steels. This enables the precise production of ready-to-install splines and makes the process both versatile and effective.

Advantages

  • Highest spline quality
  • Surface hardening
  • No destruction of the material grain flow

Workpieces that have been finished using the cold forming process

Cold formed sample parts
Cold formed sample parts
Yoke-shaft
Yoke-shaft
From disc to finished clutch plate carrier
From disc to finished clutch plate carrier

Intermittent Forming

Intermittent Forming

With the Grob intermittent forming, we close a technical process gap in forming technology. The process offers you new potentials for the fast and efficient production of complex components. Thanks to our innovative, newly-developed kinematics, splining is feasible without axial feed and with very short spline run-out.

Advantages

  • Splining up to one shoulder
  • Universally applicable
  • Surface roughness Ra 0.4 ~ N5

Workpieces that have been produced using the intermittent forming process

Thru-axles
Thru-axles
Rotor shaft
Rotor shaft
Clutch plate carrier
Clutch plate carrier

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