Manufacturing techniques

We cover a wide range of processes: cutting (sawing, cut-off grinding, adiabatic HSIC), grinding (double surface grinding, flat/profile grinding, vibratory grinding), milling (5-axis, rotary transfer, robot-assisted), turning, and laser cutting with powerful CO₂ lasers.

One of our specialties is nosta mechanical engineering – we design and build custom systems for large-scale customer projects and for our measuring machines.
Machines developed in-house with automation are also used for keyways, T-nuts, wings, and radius grinding on longitudinal edges. Furthermore, wherever possible, we manufacture from profile material that best reflects the contour.
The results are competitive prices, resource-saving products, and optimal quality assurance.

For cutting, we use band saws, miter saws, circular saws, high-precision cut-off grinding, and adiabatic high-speed impact cutting (HSIC) – ideal for fast cycle times, minimal material loss, and burr-free production.

We offer double surface grinding, through-feed grinding, flat and profile grinding, as well as vibratory grinding/trowalizing – using High-Speed Grinding Nosta (HSGN) machines for extremely high throughput rates of up to 220 m/s circumferential speed.

The machine park consists of 5-axis simultaneous and 3/4-axis milling centers and rotary index milling machines with up to 22 spindles, some of which are CNC-controlled—combined with robot handling systems, CAD-CAM, and tool management for efficient complete machining.

Turning and milling are performed with high precision, and shape and position tolerances are strictly adhered to. Use of CNC lathes, multi-spindle systems, and bar feeders – ideal for prototypes through to series production.

Automated production is what is known as unmanned production. We use vibratory feeders, inlays, vibrating plates with cameras, and robotic insertion.
In automated production, we also use rotary and linear machines with up to 28 NC axes – for maximum repeat accuracy and efficiency.
Our in-house machine construction enables us to provide customer-specific automation solutions.

We see ourselves as a full-service provider.
We offer heat treatment (nitriding, hardening, galvanizing, etc.), surface coating (PVD, duplex, anodizing), marking (laser, data matrix, QR), assembly, packaging according to customer specifications, parts cleaning, and 100% outgoing inspection, as well as documentation such as PPAP, FMEA, EMPB, and material certificates.

Yes, you can request case hardening, induction hardening, nitriding, or tempering—or select standard heat treatments depending on material requirements.

Surface finishing includes electroplated zinc lamellar coating (e.g., Geomet 321/500), duplex, anodizing, painting, PVD, or industry-specific alternatives on request.

In 5-axis milling, milling is not only performed with 3-axis movements, but also with 5 axes, sometimes simultaneously. This allows complex contours to be milled, e.g., turbine blades.

In 5-axis simultaneous milling, all five axes can move simultaneously during machining.
This allows complex free-form surfaces to be produced in a single operation – for example, for turbine blades or medical implants – in a single clamping.

In 3-axis milling, the tool or table moves only linearly in three spatial directions. In 5-axis milling, two rotational axes are added, enabling machining from multiple sides – resulting in more complex geometries, higher precision, and fewer re-clamping operations.

To produce complex contours in a single clamping.

Double surface grinding is a process in which both surfaces of a workpiece are ground flat simultaneously.
The workpiece is guided between two grinding wheels, which enables high dimensional accuracy and precision.
These systems are mostly used for high volumes and have an automatic feed.

It is used for large quantities when there are high requirements for plane parallelism, flatness, and surface quality on both sides of a workpiece – e.g., for impellers for oil and gear pumps, seals, bearings, and gears. For larger quantities, it is also the most economical method of grinding parts flat.

– Double-sided machining in a single step
– Very short cycle times
– High dimensional accuracy
– Low distortion due to uniform material removal
– Ideal for series production
– High process capability due to automatic readjustment

Depending on the material and geometry of the component, tolerances and plane parallelism of up to 3 µm can be achieved.

In automated systems, cycle times of 0.12 to 1 second can be achieved, depending on the material, geometry, and grinding allowance.

Typical materials for double surface grinding are as follows, with the corresponding grinding wheels:
– Steel and stainless steel
– Sintered metal
– Copper, brass
– Ceramics
– Plastic
– Carbide

At nosta, we mainly use the following materials for double surface grinding:
– 100Cr6
– 31 CrMoV9
– C75
– VA
– 42CrMo4
– 16MnCr5
– and many more.

Depending on the material, conventional grinding wheels (corundum), CBN or diamond wheels are used. The choice depends on the material and the desired surface quality.

An optimally matched cooling lubricant or grinding oil ensures:
– Temperature stability
– Better flushing effect (removal of grinding particles)
– Reduction in wheel wear
– Higher surface quality
– Lubricating effect

The choice of cooling lubricant or grinding oil depends on the material, machine, and abrasive.
Our double surface grinding machines are supplied centrally via an oil/cooling lubricant system.
This ensures optimal recycling and longevity of the cooling medium.