kaltwalzen vollmaterial

PROCESS

Cold forming SOLID Materials

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
- Surface finish Ra 0.4
- No disruption of material grain flow

PROCESSES

SPINNING SHEET METAL
COLD FORMING SPLINES
INTERMITTENT FORMING SPLINES

INTERNAL FORMING & JOINING
SLOTTING, COINING, FORMING SHEET METAL

MACHINES
A-SERIES COLD FORMING MACHINES

C-SERIES COLD FORMING MACHINES

R3 SPINNING MACHINE
i9 INTERNAL FORMING MACHINE

T12 COLD FORMING MACHINE

S8 SLOTTING MACHINE

ERNST GROB AG
Rohrgasse 9
P.O. Box 830
CH-8708 Männedorf
Switzerland

T +41 44 922 77 00
F +41 44 922 77 88
info@ernst-grob.com
sales@ernst-grob.com

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DATA PROTECTION

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.

In principle, all popular splined shaft profiles defined by well-established standards can be generated. Beyond those standards, virtually any desired spline geometry (involutes, arched profiles, straight profile, buttress tooth profiles, and profiles with undercuts, …) with even or uneven numbers of teeth can be produced.

APPLICATIONS

POWERTRAIN - Solid stock

Mit dem GROB- Kaltwalzverfahren hergestellte Steck- und Laufverzahnungen sowie Torsionsfedern, werden dank dem wirtschaftlichen Verfahren und den prozessbedingten Vorteilen sehr oft in Bauteilen des Antriebsstrangs von Personenwagen, Nutzfahrzeugen oder landwirtschaftlichen Fahrzeugen eingesetzt.

Anwendungsbeispiele

Getriebewellen
Steckachsen
Gelenkwellen
Antriebswellen
Gabelwellen
Abgangswellen
Flanschwellen
Getriebeschaltwellen
Kupplungswellen
Novikov-Getriebe
Radwellen
Halbwellen
Abtriebswellen
...
...

ENGINE TECHNOLOGY - solid stock

The extremely high manufacturing accuracy achieved on GROB cold forming machines makes them eminently suitable for precision spline and gear generation on key engine components such as camshafts for valve lift adjustment.

Typical applications

Crankshafts
Camshafts
Starter pinions
...
...

AUTOMOTIVE ENGINEERING - solid stock

In addition to engine and power train applications, GROB cold forming is used to produce various other cost-effective automotive components.

Typical applications

Steering half-shafts (height adjustment)
Brake actuation camshafts
Torsion bars
Power take-off shafts
ABS sensor splines
Axle bridges
Constant-velocity joints
Steering pinions
...
...

INDUSTRY - solid stock

In addition to superior cost-effectiveness, the technological benefits of cold forming are crucial to the success of numerous industrial applications. Prominent among these are, for example, high accuracy levels, surface work-hardening, low distortion after post-forming heat treatment etc.

Typical applications

Extruder shafts
Pump drive shafts
Torsions bars
Shredder blade shafts
Splined shafts for printers
Door closer racks
Selector shafts for medium- and high-voltage switchgear
...
...

A-Series • | Cold forming

Benefitting from the modular system, all machines of the A-Series can be ideally configured to suit your specific requirements. A-Series machines can be equipped with different GROB cold forming technologies like for example the intermittent forming, the conventional cold rolling or the stroke stamping process. There is also the possibility to combine different forming technologies
» More information about the A-Series • | Cold forming