June 15, 2014
June 15, 2014
June 18, 2014
24.1354.1 - 24.1354.11
Utilizing Rep-Rap Machines in Engineering CurriculumIn this ABET accredited manufacturing engineering program, the author has been teaching theRapid Prototyping and Reverse Engineering course for 8 years. The basic curriculum has beenwell set with the exclusion of new developments. However, every year new developments areadded to the curriculum due to the dynamic nature of both fields. In addition, the laboratorieshave been equipped with multiple relevant technologies including Stereolithography (SLAViper), Fused Deposition Modeling (Dimension Elite), and 3D Printing (Prometal RXD) as wellas Konica Minolta 910, Creaform Handyscan, and FARO Platinum Arm 3D scanning equipment.Due to the depreciation on the equipment and maintenance and service costs, the author hasdeveloped the concept of utilizing low cost rep-rap machines based on the Fused FilamentFabrication (FFF) process such as Mendelmax 1.5 for laboratory activities. Multiple machineshave been built by the students in the department as the interest towards rep-raps grew in thepast, and a group was commissioned to build a machine for the course. Under the guidance of amanufacturing senior, two biomedical students have altered the open source design available andbuilt a Mendelmax 1.5+ machine for about $1,000. The machine is currently used within thecourse and utilizes inexpensive biodegradable PLA (polylactic acid) material for printing. Thispaper will depict the development project and the way the machine utilized in the course. Thedevelopment approach for the machine teaches students about machine design includingactuators, drives, extruders, and controls. Utilization of the machine in the course is important forunderstanding of the filament fabrication and materials content, STL file development and itsslicing through the open source software as well as NC code generation, which is slightlydifferent than traditional CNC programs. The GUI interface is also a good tool to demonstratethe extrusion and motion control processes. The paper will conclude with the pros and cons ofsuch an approach and list other possible approaches.
Sirinterlikci, A., & Sirinterlikci, S. F. (2014, June), Utilizing Rep-Rap Machines in the Engineering Curriculum Paper presented at 2014 ASEE Annual Conference & Exposition, Indianapolis, Indiana. 10.18260/1-2--23287
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