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Printing a Shock

Although this shock absorber is just a demonstration device, its fabrication is rather clever as the materials company that made it, Covestro, used three different materials and three different 3D fabrication processes to make it: First, there’s the outer spring of the 40 x 7-cm part.
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Although this shock absorber is just a demonstration device, its fabrication is rather clever as the materials company that made it, Covestro, used three different materials and three different 3D fabrication processes to make it:

Das Besondere an dem Stoßdämpfer ist neben seiner hohen Funktionalität die Fertigung einzelner Teile aus Polycarbonat-Filament, pulverförmigem thermoplastischem Polyurethan (TPU) bzw. flüssigem Polyurethanharz und mit Hilfe von drei verschiedenen 3D-Druck-Verfahren.
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In addition to its high degree of functionality, the unique feature of the shock absorber is the production of individual parts from polycarbonate filament, powdered thermoplastic polyurethane (TPU) and a liquid polyurethane resin with the aid of three different 3D printing processes

First, there’s the outer spring of the 40 x 7-cm part. It was produced with powered thermoplastic polyurethane via the selective laser sintering process.

Then there’s the adjusting screw that, when the shock is assembled, is on the interior of the assembly. In order to perform well it needs to have both strength and hardness. Consequently, it is produced with a polycarbonate. The fused filament fabrication process was used.

Finally, there is the air chamber. It, too, is in the interior of the shock absorber. It was made with a liquid polyurethane resin with a digital light processing method.

According to Lukas Breuers, a marketing manager for 2D and 3D printing at Covestro, “This complex structure would not have been possible with conventional production processes.”

Auf der Fakuma 2018 präsentiert Covestro einen komplex geformten, 3D-gedruckten Stoßdämpfer. 
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At the Fakuma 2018 trade fair, Covestro will be presenting a complex shock absorber which was manufactured using 3D printing.

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