C9T-Helix Cold Forming Machine
For helical splinesThe C9T-Helix cold forming machine is specially designed for the production of helical splines. Thanks to automatically pivotable forming heads, it enables the precise cold forming of complex helical spline geometries while maintaining short cycle times and high process stability. Like all machines in the C series, the C9T-Helix cold forming machine is characterized by very short cycle and setup times, high process stability and minimal tooling costs, making it ideal for a wide range of applications in the automotive, appliance and mechanical engineering industries, where high quality at low production costs is required.
Machine-specific application possibilities
Unlike the standard C9T machine, the C9T-Helix cold forming machine additionally features two CNC-controlled swivel axis angles, enabling the economical and precise production of helical splines – for example on spindles, steering pinions or gears, as used in planetary gear sets. The machines are very often used in the automotive industry for the production of torque-transmitting plug-in splines on shafts and axles, as found in the drivetrain of passenger cars, commercial vehicles or agricultural machinery. The cold forming machines have also proven themselves in series production of splines in appliance and mechanical engineering, thanks to very stable processes and correspondingly low spline costs.
Your advantages
Like all Grob machines, the C9T-Helix cold forming machine impresses with its mature machine concept, focusing on efficiency, flexibility and maintenance-friendliness, and is based on decades of experience in the construction of cold forming machines.
It operates using the proven Grob cold forming process, in which the forming is divided into many small steps, extending over the entire cylindrical section of the forming zone.
The splines produced in this way are characterized by cost-efficiency, highest precision and surface quality, combined with the well-known advantages of cold forming: no destruction of the material structure, work hardening, improvement of the material structure, material savings, low distortion, etc.
Advantages of the C9T-Helix cold forming machine:
- CNC-controlled swivel axis angles
- Interrupted partial process for extremely difficult/heavy splines
- Torque motor for highly dynamic spline forming
- High process stability even in series production
- Minimal setup times thanks to universal design
- Maintenance-friendly, robust and durable
- Optional with Fanuc or Siemens control
- Number of workpiece teeth freely programmable
Grob Machines: Highly efficient instruments, specifically designed for your application
FAQ
For which applications is the C9T-Helix cold forming machine suitable?
The C9T-Helix is mainly used in the automotive, appliance and mechanical engineering sectors – for example, for the production of splines on axles and shafts, splines on planetary gears or splines for various industrial applications, such as pump and shredder shafts.
How flexibly can the C9T-Helix cold forming machine be used?
Thanks to its well-designed tool holders, modular machine structure, and freely programmable number of teeth, the C9T-Helix can manufacture a wide range of workpieces with minimal setup effort.
Is the C9T-Helix cold forming machine also suitable for series production?
Yes. Due to the very short cycle times, high process reliability, and the possibility of automating the machines, the C9T-Helix is ideally suited for series production of small to very large batch sizes.
What distinguishes the C9T-Helix cold forming machine compared to machines from other manufacturers?
The C9T-Helix offers very short cycle times, high process stability, and is particularly maintenance-friendly while having low acquisition costs.
What other advantages does the Grob cold forming process offer?
Work hardening, no destruction of the material structure, very low distortion after subsequent heat treatment, forming of solid material up to a strength of 1,500 N/mm², 1,100 N/mm² for sheet metal.
What spline quality can be achieved with the Grob cold forming process?
According to DIN 5 – 7*, e.g. DIN 5480, 3960 or 3962 * Quality 5 partially.
What types of splines can be produced with the C9T-Helix cold forming machine?
The C9T-Helix can produce a wide variety of spline and spline-like geometries – ranging from classic involute splines to sawtooth geometries. Additionally, helical splines can be produced using the CNC-controlled swivel axis angles.
Which control systems are available?
The machine can be equipped with either Fanuc or Siemens control.
Which process is mainly used on the C9T-Helix cold forming machine?
The C9T-Helix operates in the continuous or interrupted partial process using the long-established Grob cold forming process, a chipless forming process for the production of splines and spline-like geometries. The Grob cold forming process enables highly efficient and precise production of splines with small to medium modules.
