CNC machining Gold standard for tight tolerances and complex geometries

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CNC machining enables Speedpart to manufacture complex components from production-grade metals and engineering plastics with high dimensional accuracy. The process complements additive manufacturing where tight tolerances, fits and functional surfaces are required.

Whether prototypes, spare parts or small series: when components need to be manufactured from production-grade materials starting from quantities of one, and tight tolerances are required, CNC machining is often the method of choice. In addition to additive manufacturing processes, Speedpart therefore also uses modern machining technology to produce components with high dimensional accuracy and functional requirements.

CNC manufacturing is particularly useful for applications where mechanical properties, fits or functional surfaces are decisive. By machining metals as well as engineering plastics, both prototypes and components for direct use can be produced.

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Suitable for complex geometries

In a world where micrometres can determine success or failure, computer-controlled manufacturing systems are setting new standards for precision and efficiency. Modern five-axis machining centres are used to manufacture demanding components. Simultaneous five-axis machining makes it possible to machine complex contours and free-form surfaces efficiently and to carry out several machining steps in a single setup. This also allows components with complex geometries to be produced cost-effectively.

At Speedpart, milling machines from manufacturers such as Posmill and DMG are used. Programming is carried out using CAD/CAM systems, enabling CAD data to be transferred directly into the manufacturing process. This is complemented by reproducible clamping technology, which ensures reliable component positioning during machining.

Broad range of materials for different requirements

One advantage of CNC machining is the wide variety of materials that can be processed, including both metals and engineering plastics.

The metals processed include aluminium alloys, steel and stainless-steel variants, as well as tool steels. A particular advantage lies in the broad selection of machinable engineering plastics, which provides a high degree of flexibility when choosing materials.

This makes the process suitable both for functional prototypes and for components that are later to be tested or used in real-world applications. From aerospace and medical technology to the automotive industry, numerous sectors use CNC machining to manufacture components with high dimensional accuracy, complex geometries and efficient production times. Typical applications range from housings and fixtures to components for tool and mould making.

Complementing additive manufacturing processes

In many projects, CNC machining is used as a targeted complement to additive processes. Subsequent machining of 3D-printed components enables precise finishing of function-critical areas such as threads, fits or defined functional surfaces.

In this way, complex geometries can be realised that would be difficult or impossible to produce using a single process alone. The combination of additive and subtractive manufacturing opens up hybrid concepts that combine the design freedom of 3D printing with the dimensional accuracy and surface quality of CNC machining, while significantly reducing development times.

From one-off parts to small series

Another advantage is the flexibility of production. One-off parts can be manufactured just as reliably as recurring small series. Depending on requirements, components can be further processed, machined after production or integrated into assemblies. CNC machining therefore covers a broad spectrum, from initial prototypes to robust components for machines, technical devices and industrial applications.

The versatility of the process makes it possible to realise even complex geometries and functional requirements efficiently. In combination with additive manufacturing processes, development times can be shortened, designs optimised and customised solutions implemented for a wide range of requirements.

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