Hybrid manufacturing technologies
In the hybrid manufacturing of thermoplastics, the ECO-Hybrid combines fused granular fabrication (FGF)-based extrusion with machining.
This plant, which has been developed in cooperation with the Additive Manufacturing Systems Division of Hans Weber Maschinenfabrik GmbH, is based on the direct extrusion of a plastic granulate. The continuous additive printing process permits the production of large-volume and extremely resilient components. After or during printing, 5‑axis machining takes place to optimise accuracies and surfaces. This makes the system an ideal choice for the production of rough-shaped components for use as quick prototypes or for the final production of small and large series.
Dr. Kawalla-Nam: „This trend-setting hybrid technology renders processes much more efficient. The goal must be to produce large quantities in a short time at competitive costs.“.
In addition to small 3D components, the ECO-Hybrid mainly permits the fast production of large-volume components, such as façade elements, formwork for the construction industry or casting/pressing moulds in mould-making industries. CNC machining perfects their functionality in terms of desired accuracies and high-quality surface finishes.
ECO-LT basic machine: Low-vibration portal frame with stationary machining table on a stable substructure. A protective cabin including ceiling element encloses the machine completely. Two versions of equipping the unit and a tool changer with 7 places satisfy most diverse customer requirements.
Printing table: Table surface heatable up to 150 °C, permanent printing plate (surface), base plate from cast aluminium, plate milled (level or with grooves), steel bars with fitted and threaded bushes
Plasticising up to 450 °C
Maximum material output from 2 kg/h to 20 kg/h
Nozzle diameter from 1 mm to 14 mm
Subsequent to their fusing in the extruder, a nozzle deposits the fused pellets on the build-plate/printing table in layers.
The cardanic 5‑axis working head provides for an undercut of up to 46° and can be equipped with different head versions. This permits the high-precision three-dimensional machining of free-form surfaces and contours during and after 3D printing.