A Solid Free Form Fabrication Equipment to Manufacture Axisymmetric Parts with Improved Surface Quality

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University of Texas at Austin


Competitive and Hobby grade Rocket makers quite often build custom nozzles. Solid freeform fabrication is most natural choice for Manufacturing of the Nozzles. Different geometries can be quickly manufactured and tested. However, staircase effect and limited accuracy of 2-1/2 based deposition prevents the design intent from fabrication. Additionally, using different blends of ceramic and sustaining the geometry during curing becomes challenging. This research presents a unique 3D printing system that dispenses ceramic to enable manufacturing of axi-symmetric parts as continuous bead. Relative motion of the material dispenser and rotational substrate as well as unique path planning enables a continually sculpted surface to reduce the staircase effects.


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