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The goal of this project is to establish a novel design approach for the additive manufacturing of mechanical transmission systems. Our focus is the design and 3D printing of a harmonic drive. Harmonic drives use the elastic dynamics of metals to create an elliptical rotation, which is what conceives the reduction of speed of the outer piece. Additive manufacturing is used to achieve more complex and precise mechanical structures. Components of less complexity will be 3D printed with polymer and commercial parts will be purchased. There is a need for the creation of new plastics manufacturing processes that define and simplify the decision methods involved in the production. With this project, we will establish the process we consider best for plastic additive manufacturing. The decision of which parts are 3D printed or machined affects the harmonic drive’s cost and lead-time; therefore, several alternatives are systematically analyzed. The final bill of materials contains the list of commercial parts and 3D printed parts. When assembled, a functioning harmonic drive is produced. The final harmonic drive is experimentally tested to determine the life of its components when subjected to working loads. The methods used in this research include the part consolidation for the optimization of the system, transcription of 3D models to STL files that can be printed, polymer additive manufacturing and traditional quality control techniques to improve the design. Material models utilized in this project are commercial aluminum parts, 3D printer and plastic, and a low-voltage power motor. The complete set of results will give torque and speed reduction ratios that will be compared to those previously obtained by electronic simulations. This locates us a step ahead in the creation of an optimal process for additive manufacturing.
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Ashby, M., & Johnson, K. (2013). Materials and design: the art and science of material selection in product design. Waltham, MA: Butterworth-Heinemann.
Corbett, J. (1991). Design for manufacture: Strategies, principles, and techniques. Boston, MA: Addison-Wesley.
De Lucena, S.E., Marcelino, M.A., & Grandinetti, F.J. (2007). Low-cost PWM speed controller for an electric mini-baja type vehicle. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 29(1), 21-25. doi: 10.1590/S1678-58782007000100004
Frey, D., Palladino, J., Sullivan, J., & Atherton, M. (2007). Part count and design of robust systems. Systems Engineering, 10(3), 203-221. doi: 10.1002/sys.20071
Gervini, V.I., Gomes, S.C.P., & Da Rosa, V.S. (2003). A new robotic drive joint friction compensation mechanism using neural networks. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 25(2), 129-139. doi: 10.1590/S1678-58782003000200004
Huang, G. Q. (1996). Design for X: Concurrent engineering imperatives. London, United Kingdom: Chapman & Hall.
Jeon, H.S., & Oh, S.H. (1999). A study on stress and vibration analysis of a steel and hybrid flexspline for harmonic drive. Paper presented at the 10th International Conference on Composite Structures, November 15, 1999 - November 16, 1999, Melbourne, Aust.
León, D., N. Arzola, & Tovar, A. (2014). Stochastic analysis of the influence of tooth geometry in the performance of harmonic drive. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 36(4). doi: 10.1007/s40430-014-0197-0
Kazmer, D. (2011). Design of plastic parts. In M. Kutz (Ed.), Applied plastics engineering handbook: processing and materials. Oxford, United Kingdom: Elsevier.
Milner, D. A. (2012). Computer-aided engineering for manufacture. London, United Kingdom: Springer.
Molloy, O., Tilley, S., & Warman, E.A. (1998). Design for manufacturing and assembly: Concepts, architectures and implementation. London, United Kingdom: Chapman & Hall.
Ramkumar, P.L., & Kulkarni, D.M. (2014). Objective-based multiple attribute decision-making method for plastic manufacturing process selection. International Journal of Manufacturing Technology and Management, 28(4), 184-199. doi: 10.1504/IJMTM.2014.066696
Wakil, S.D.E. (1998). Processes and design for manufacturing. Boston, MA: PWS Publishing Company.IUJUR Vol. I, 2015| PAGE 49