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dc.contributor.author Ammouri, Ali H.
dc.contributor.author Hamade, Ramsey F.
dc.date.accessioned 2017-01-17T14:07:43Z
dc.date.available 2017-01-17T14:07:43Z
dc.date.copyright 2012 en_US
dc.date.issued 2017-01-17
dc.identifier.issn 0268-3768 en_US
dc.identifier.uri http://hdl.handle.net/10725/5025
dc.description.abstract This paper presents a novel actuator design for vibration-induced micromachining. The bi-directional ultrasonic elliptical vibration actuator (BUEVA) possesses a combination of features that renders it suitable for the machining a wide range of materials over a variety of cutting parameters. The cutting motion is an elliptical tool motion that resembles “spoon feeding”. This cutting action is in contrast to in-plane, horizontal motion utilized by most existing setups. The motion is arrived at through a combination of motions along the tool's axial and transverse directions and by vibrating out of phase and is generated by two stacked ceramic multilayer actuator ring piezo elements. Another distinguishing feature of BUEVA is the use of piezo stacks which ensure high blocking force compared to low force of piezo benders as used in many existing actuators. Furthermore, the amplitude and frequency of vibration of the tool are controlled on-line in order to vary the cutting depth and cutting speed according to the desired cutting parameters. This is a desirable characteristic which allows one to “dial-in” a desirable cutting speed for different workpiece materials. Another attractive BUEVA feature is that the design is very compact and can fit easily into the working space of most milling machining centers without the need for custom motion setups. An off the shelf TiALN-coated carbide turning tool is utilized as the cutting tool. Furthermore, refined versions of previously reported models by other workers in the micromachining field have been developed. Experimental force and surface roughness measurements are compared versus these ideal calculations from the improved models. Compared with these reference models, our refined calculations show improvements in describing chip geometry based on corrected tool motion and which, consequently, resulted in improved estimates of both surface roughness and cutting forces. Verification cutting tests in two different materials (Al2024 and Plexiglas) show good surface integrity and dimensional definition with roughness measurements in reasonable correlation to the refined model calculations. en_US
dc.language.iso en en_US
dc.title BUEVA en_US
dc.type Article en_US
dc.description.version Published en_US
dc.title.subtitle a bi-directional ultrasonic elliptical vibration actuator for micromachining en_US
dc.author.school SOE en_US
dc.author.idnumber 201306469 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal The International Journal of Advanced Manufacturing Technology en_US
dc.journal.volume 58 en_US
dc.journal.issue 9 en_US
dc.article.pages 991-1001 en_US
dc.keywords Elliptical vibration cutting en_US
dc.keywords Micromachining en_US
dc.keywords Cutting forces en_US
dc.keywords Surface roughness en_US
dc.identifier.doi http://dx.doi.org/10.1007/s00170-011-3463-7 en_US
dc.identifier.ctation Ammouri, A. H., & Hamade, R. F. (2012). BUEVA: a bi-directional ultrasonic elliptical vibration actuator for micromachining. The International Journal of Advanced Manufacturing Technology, 58(9-12), 991-1001. en_US
dc.author.email ali.ammouri@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://link.springer.com/article/10.1007/s00170-011-3463-7 en_US
dc.author.affiliation Lebanese American University en_US

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