Technology

In the GROB spinning process, discs are formed into

cup-shaped blanks, whereby a spinning mandrel

forms the internal geometry of the workpiece. The

spinning rollers infeed locally from the outside and

form the blank onto the spinning mandrel.

Typical applications

The GROB spinning machine is a dedicated concept for

the production of precision, light-gauge and rotationally

symmetric hollow workpieces with constant or variable

wall thicknesses.

This machine has been designed specifically to generate

preforms for the GROB T12 series cold forming machine

and the i9 internal cold forming machine from round or

disc-shaped blanks.

Also possible is a diversity of stand-alone applications for

the production of classic spun parts.

Benefits

Highly-dynamic machine axes and a sophisticated loading

system generate extremely short cycle times.

Changeover times of just a few minutes provide our customers

with flexible planning potentials and just-in-time production.

The R3 machine concept can be readily expanded into a fully

automated production line when linked with other GROB

machines for the downstream processing of spun workpieces

into splined components (T12 cold forming machine,

i9 internal cold forming machine) or slotted components

(S8 slotting machine).