Analysis group unlocks new technique to 3D-print advanced, practical parts for gentle robotics

Analysis group unlocks new technique to 3D-print advanced, practical parts for gentle robotics

Use of yield stress hydrogels to 3D-print practical gentle parts for gentle robotics with a

SUTD unlocks new method to 3D print complex, functional components for soft robotics
Use of yield stress hydrogels to 3D-print practical gentle parts for gentle robotics with a excessive diploma of complexity. Credit score: SUTD

A group of researchers from the Singapore College of Know-how and Design (SUTD) has developed a brand new strategy for adopting the Freeform Liquid 3D Printing (FL-3DP) expertise to 3D print extra strong and geometrically advanced parts for gentle robotics.

FL-3DP is an rising expertise with excessive potential that permits the 3D printing of multi-material practical parts. It makes use of gel as a brief suspension media by which inks are extruded and held in place. As soon as the inks are solidified, the gel can then be simply washed off.

This strategy overcomes two main limitations confronted in present 3D printing applied sciences. Firstly, it permits the 3D-printing of supplies that take a very long time to solidify when extruded. Secondly, because of its capacity to carry inks and preserve them within the liquid state, superior geometries equivalent to overhanging constructions shapes with high-aspect ratios or high-quality mixtures of a number of supplies have now turn out to be a possible choice.

Nevertheless, early FL-3DP was discovered to have restricted options when fabricating superior parts, as solely mono-material constructions or easy shapes equivalent to meshes and shells may very well be demonstrated. The absence of extra advanced demonstrators, regardless of the guarantees of this expertise, may very well be partly defined by difficulties in controlling the interfaces between the inks and helps, thus difficult the printing decision.

By an in-depth examine of the rheological properties and interfacial stabilities between inks and help gels, SUTD researchers managed to raised predict the filament form, which led to improved printing decision and constancy.







FL-3DP of sensorized composite cleeves. Credit score: SUTD

This consequence enabled the total exploitation of FL-3DP expertise via the fabrication of advanced elastomeric-based parts combining a number of supplies and the enhancement of the vary in advanced geometrical prints. Their paper “Freeform Liquid 3D Printing of Tender Purposeful Elements for Tender Robotics,” which summarizes these key findings, was revealed in ACS Utilized Supplies & Interfaces.

To display some great benefits of FL-3DP over conventional manufacturing approaches together with casting and molding, the researchers designed and fabricated superior pneumatic parts for gentle robotics functions particularly utilized in gentle grippers. By combining stiff, gentle and practical elastomers, they have been capable of exactly management the form deformation of the parts, to tune their functionalities by adjusting the friction of sentimental gripper surfaces or by offering sensing capabilities, and improve the lifespan of parts by as much as ten instances in comparison with their conventional forged counterparts.

These outcomes are a part of a world effort to mark a brand new period for extrusion-based 3D printing through the use of appropriate suspension media. This enhanced strategy additionally affords a broader design house to designers and engineers, and may gain advantage many functions, equivalent to gentle robotics the place advanced and strong mixtures of a variety of supplies and functionalities are required.

The group is now engaged on widening the vary of processable supplies by creating new suspension media which are chemically suitable with extra inks.

“FL-3DP and different new extrusion-based additive manufacturing processes are getting us nearer and nearer to the final word goal purpose of full direct co-fabrication of advanced practical methods equivalent to robots and different advanced practical merchandise and units,” mentioned principal investigator Assistant Professor Pablo Valdivia y Alvarado from SUTD.


Distinctive technique to manufacture freeform constructions of thermoplastics in microparticulate gels


Extra info:
Théo Calais et al, Freeform Liquid 3D Printing of Tender Purposeful Elements for Tender Robotics, ACS Utilized Supplies & Interfaces (2021). DOI: 10.1021/acsami.1c20209

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Singapore College of Know-how and Design

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Analysis group unlocks new technique to 3D-print advanced, practical parts for gentle robotics (2022, April 7)
retrieved 12 April 2022
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