Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045

Regenerative vibration is a major drawback in machining processes reducing the geometric accuracy and dynamic stability of the cutting system. Achieving a dynamically stable cutting operation represents a significant decrease in the production time and therefore in the costs associated with this pro...

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Autores:
Coba Salcedo, Milton Fabian
Acevedo Peñaloza, Carlos Humberto
Valencia Ochoa, Guillermo
Tipo de recurso:
Article of journal
Fecha de publicación:
2018
Institución:
Universidad Francisco de Paula Santander
Repositorio:
Repositorio Digital UFPS
Idioma:
eng
OAI Identifier:
oai:repositorio.ufps.edu.co:ufps/1772
Acceso en línea:
http://repositorio.ufps.edu.co/handle/ufps/1772
http://dx.doi.org/10.20902/IJCTR.2018.110914
Palabra clave:
turning
regenerative chatter
lobe diagram
Rights
openAccess
License
All Privacy & Copyrights reserved with Sai Scientific Communications.
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dc.title.eng.fl_str_mv Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045
title Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045
spellingShingle Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045
turning
regenerative chatter
lobe diagram
title_short Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045
title_full Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045
title_fullStr Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045
title_full_unstemmed Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045
title_sort Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045
dc.creator.fl_str_mv Coba Salcedo, Milton Fabian
Acevedo Peñaloza, Carlos Humberto
Valencia Ochoa, Guillermo
dc.contributor.author.none.fl_str_mv Coba Salcedo, Milton Fabian
Acevedo Peñaloza, Carlos Humberto
Valencia Ochoa, Guillermo
dc.subject.proposal.eng.fl_str_mv turning
regenerative chatter
lobe diagram
topic turning
regenerative chatter
lobe diagram
description Regenerative vibration is a major drawback in machining processes reducing the geometric accuracy and dynamic stability of the cutting system. Achieving a dynamically stable cutting operation represents a significant decrease in the production time and therefore in the costs associated with this process. The information provided by the stability lobe diagrams is of great importance, since from them we know the range of spindle rotation speeds and chip thicknesses at which the cutting operation takes place in a state free from the phenomenon of regenerative chatter, avoiding the rapid wear of the cutting tool and achieving quality surface finishes. In the present investigation, the behavior of the turning operations in steel 1020, steel 1035 and steel 1045 is characterized, with the objective of verifying the presence of instability in the machining caused by the regenerative chattering in the machine tools. Based on the analytical models proposed by Altintas and Budak for the stabilization of self-excited vibrations, a computer tool is developed capable of generating stability lobe diagrams, which allow us to appreciate the operating conditions in which machining presents stable behavior, to simulate the material removal process considering certain parameters specific to the machine tool.
publishDate 2018
dc.date.issued.none.fl_str_mv 2018
dc.date.accessioned.none.fl_str_mv 2021-12-09T18:42:42Z
dc.date.available.none.fl_str_mv 2021-12-09T18:42:42Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.identifier.uri.none.fl_str_mv http://repositorio.ufps.edu.co/handle/ufps/1772
dc.identifier.doi.none.fl_str_mv http://dx.doi.org/10.20902/IJCTR.2018.110914
url http://repositorio.ufps.edu.co/handle/ufps/1772
http://dx.doi.org/10.20902/IJCTR.2018.110914
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.ispartof.none.fl_str_mv International Journal of ChemTech Research
dc.relation.citationedition.spa.fl_str_mv Vol.11 No.9.(2018)
dc.relation.citationendpage.spa.fl_str_mv 114
dc.relation.citationissue.spa.fl_str_mv 9(2018)
dc.relation.citationstartpage.spa.fl_str_mv 108
dc.relation.citationvolume.spa.fl_str_mv 11
dc.relation.cites.none.fl_str_mv Salcedo, M. C., Peñaloza, C. A., & Ochoa, G. V. Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045.
dc.relation.ispartofjournal.spa.fl_str_mv International Journal of ChemTech Research
dc.rights.eng.fl_str_mv All Privacy & Copyrights reserved with Sai Scientific Communications.
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dc.rights.creativecommons.spa.fl_str_mv Atribución 4.0 Internacional (CC BY 4.0)
rights_invalid_str_mv All Privacy & Copyrights reserved with Sai Scientific Communications.
Atribución 4.0 Internacional (CC BY 4.0)
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.extent.spa.fl_str_mv 07 páginas
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dc.publisher.spa.fl_str_mv International Journal of ChemTech Research
dc.publisher.place.spa.fl_str_mv India
dc.source.spa.fl_str_mv https://sphinxsai.com/2018/ch_vol11_no9/ch01.htm
institution Universidad Francisco de Paula Santander
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spelling Coba Salcedo, Milton Fabiana98add1326dbb80bf038dda2d817350a600Acevedo Peñaloza, Carlos Humberto1f12a99f8d5bcc67d1eb10c7c07c76a3600Valencia Ochoa, Guillermo7b9fd01ee22f884965a5cd038e2d734d2021-12-09T18:42:42Z2021-12-09T18:42:42Z2018http://repositorio.ufps.edu.co/handle/ufps/1772http://dx.doi.org/10.20902/IJCTR.2018.110914Regenerative vibration is a major drawback in machining processes reducing the geometric accuracy and dynamic stability of the cutting system. Achieving a dynamically stable cutting operation represents a significant decrease in the production time and therefore in the costs associated with this process. The information provided by the stability lobe diagrams is of great importance, since from them we know the range of spindle rotation speeds and chip thicknesses at which the cutting operation takes place in a state free from the phenomenon of regenerative chatter, avoiding the rapid wear of the cutting tool and achieving quality surface finishes. In the present investigation, the behavior of the turning operations in steel 1020, steel 1035 and steel 1045 is characterized, with the objective of verifying the presence of instability in the machining caused by the regenerative chattering in the machine tools. Based on the analytical models proposed by Altintas and Budak for the stabilization of self-excited vibrations, a computer tool is developed capable of generating stability lobe diagrams, which allow us to appreciate the operating conditions in which machining presents stable behavior, to simulate the material removal process considering certain parameters specific to the machine tool.07 páginasapplication/pdfengInternational Journal of ChemTech ResearchIndiaInternational Journal of ChemTech ResearchVol.11 No.9.(2018)1149(2018)10811Salcedo, M. C., Peñaloza, C. A., & Ochoa, G. V. Regenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045.International Journal of ChemTech ResearchAll Privacy & Copyrights reserved with Sai Scientific Communications.info:eu-repo/semantics/openAccessAtribución 4.0 Internacional (CC BY 4.0)http://purl.org/coar/access_right/c_abf2https://sphinxsai.com/2018/ch_vol11_no9/ch01.htmRegenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045Artículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85turningregenerative chatterlobe diagramNwoke O, Okonkwo U, Okafor C, Imhade O. Evaluation of chatter vibration frequency in CNC turninf of 4340 alloy steel material. 2017, (July).Dassanayake A V., Suh CS. On nonlinear cutting response and tool chatter in turning operation. Communications in Nonlinear Science and Numerical Simulation. 2008, 13 (5), pp.979–1001.Altintas Y, Weck M. Chatter stability of metal cutting and grinding. CIRP Annals - Manufacturing Technology. 2004, 53 (2), pp.619–642.Cardi AA, Firpi HA, Bement MT, Liang SY. Workpiece dynamic analysis and prediction during chatter of turning process. Mechanical Systems and Signal Processing. 2008, 22 (6), pp.1481–1494.Yeh L-J, Lai G-J. A Study of the Monitoring and Suppression System for Turning Slender Workpieces. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. 1995, 209 (3), pp.227–236.Tian L, Wu J, Xiong Z, Ding H. Active Chatter Suppression in Turning of Low-Rigidity Workpiece by System Matching BT - Intelligent Robotics and Applications. In: Liu H, Kubota N, Zhu X, DillmannLu K, Lian Z, Gu F, Liu H. Model-based chatter stability prediction and detection for the turning of a flexible workpiece. Mechanical Systems and Signal Processing. 2018, 100 , pp.814–826.Da Silva MM, Venter GS, Varoto PS, Coelho RT. Experimental results on chatter reduction in turning through embedded piezoelectric material and passive shunt circuits. Mechatronics. 2015, 29 , pp.78–85.Altintas Y. Manufacturing Automation: Metal Cutting Mechanics, Machine Tool Vibrations, and CNC Design. Cambridge University Press, 2012.Sadiku MN, Alexander CK. Fundamentos de circuitos eléctricos. 5th ed. 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texttext/plain15443https://repositorio.ufps.edu.co/bitstream/ufps/1772/3/Regenerative%20chatter%20Phenomenon%20in%20the%20Turning%20Process%20based%20on%20the%20alloy%20steels%201020%2c%201035%20and%201045.pdf.txt5deec70ebb701698e611f1f668763380MD53open accessTHUMBNAILRegenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045.pdf.jpgRegenerative chatter Phenomenon in the Turning Process based on the alloy steels 1020, 1035 and 1045.pdf.jpgGenerated Thumbnailimage/jpeg15940https://repositorio.ufps.edu.co/bitstream/ufps/1772/4/Regenerative%20chatter%20Phenomenon%20in%20the%20Turning%20Process%20based%20on%20the%20alloy%20steels%201020%2c%201035%20and%201045.pdf.jpg244946f371a34960efe165b9dd290907MD54open accessufps/1772oai:repositorio.ufps.edu.co:ufps/17722022-05-23 10:59:16.663open accessRepositorio Universidad Francisco de Paula 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 incorporada en las Obras Colectivas.

b.	Distribuir copias o fonogramas de las Obras, exhibirlas públicamente, ejecutarlas públicamente y/o ponerlas a disposición pública, incluyéndolas como incorporadas en Obras Colectivas, según corresponda.

c.	Distribuir copias de las Obras Derivadas que se generen, exhibirlas públicamente, ejecutarlas públicamente y/o ponerlas a disposición pública.
Los derechos mencionados anteriormente pueden ser ejercidos en todos los medios y formatos, actualmente conocidos o que se inventen en el futuro. Los derechos antes mencionados incluyen el derecho a realizar dichas modificaciones en la medida que sean técnicamente necesarias para ejercer los derechos en otro medio o formatos, pero de otra manera usted no está autorizado para realizar obras derivadas. Todos los derechos no otorgados expresamente por el Licenciante quedan por este medio reservados, incluyendo pero sin limitarse a aquellos que se mencionan en las secciones 4(d) y 4(e).

4. Restricciones.
La licencia otorgada en la anterior Sección 3 está expresamente sujeta y limitada por las siguientes restricciones:

a.	Usted puede distribuir, exhibir públicamente, ejecutar públicamente, o poner a disposición pública la Obra sólo bajo las condiciones de esta Licencia, y Usted debe incluir una copia de esta licencia o del Identificador Universal de Recursos de la misma con cada copia de la Obra que distribuya, exhiba públicamente, ejecute públicamente o ponga a disposición pública. No es posible ofrecer o imponer ninguna condición sobre la Obra que altere o limite las condiciones de esta Licencia o el ejercicio de los derechos de los destinatarios otorgados en este documento. No es posible sublicenciar la Obra. Usted debe mantener intactos todos los avisos que hagan referencia a esta Licencia y a la cláusula de limitación de garantías. Usted no puede distribuir, exhibir públicamente, ejecutar públicamente, o poner a disposición pública la Obra con alguna medida tecnológica que controle el acceso o la utilización de ella de una forma que sea inconsistente con las condiciones de esta Licencia. Lo anterior se aplica a la Obra incorporada a una Obra Colectiva, pero esto no exige que la Obra Colectiva aparte de la obra misma quede sujeta a las condiciones de esta Licencia. Si Usted crea una Obra Colectiva, previo aviso de cualquier Licenciante debe, en la medida de lo posible, eliminar de la Obra Colectiva cualquier referencia a dicho Licenciante o al Autor Original, según lo solicitado por el Licenciante y conforme lo exige la cláusula 4(c).

b.	Usted no puede ejercer ninguno de los derechos que le han sido otorgados en la Sección 3 precedente de modo que estén principalmente destinados o directamente dirigidos a conseguir un provecho comercial o una compensación monetaria privada. El intercambio de la Obra por otras obras protegidas por derechos de autor, ya sea a través de un sistema para compartir archivos digitales (digital file-sharing) o de cualquier otra manera no será considerado como estar destinado principalmente o dirigido directamente a conseguir un provecho comercial o una compensación monetaria privada, siempre que no se realice un pago mediante una compensación monetaria en relación con el intercambio de obras protegidas por el derecho de autor.

c.	Si usted distribuye, exhibe públicamente, ejecuta públicamente o ejecuta públicamente en forma digital la Obra o cualquier Obra Derivada u Obra Colectiva, Usted debe mantener intacta toda la información de derecho de autor de la Obra y proporcionar, de forma razonable según el medio o manera que Usted esté utilizando: (i) el nombre del Autor Original si está provisto (o seudónimo, si fuere aplicable), y/o (ii) el nombre de la parte o las partes que el Autor Original y/o el Licenciante hubieren designado para la atribución (v.g., un instituto patrocinador, editorial, publicación) en la información de los derechos de autor del Licenciante, términos de servicios o de otras formas razonables; el título de la Obra si está provisto; en la medida de lo razonablemente factible y, si está provisto, el Identificador Uniforme de Recursos (Uniform Resource Identifier) que el Licenciante especifica para ser asociado con la Obra, salvo que tal URI no se refiera a la nota sobre los derechos de autor o a la información sobre el licenciamiento de la Obra; y en el caso de una Obra Derivada, atribuir el crédito identificando el uso de la Obra en la Obra Derivada (v.g., "Traducción Francesa de la Obra del Autor Original," o "Guión Cinematográfico basado en la Obra original del Autor Original"). Tal crédito puede ser implementado de cualquier forma razonable; en el caso, sin embargo, de Obras Derivadas u Obras Colectivas, tal crédito aparecerá, como mínimo, donde aparece el crédito de cualquier otro autor comparable y de una manera, al menos, tan destacada como el crédito de otro autor comparable.

d.	Para evitar toda confusión, el Licenciante aclara que, cuando la obra es una composición musical:

i.	Regalías por interpretación y ejecución bajo licencias generales. El Licenciante se reserva el derecho exclusivo de autorizar la ejecución pública o la ejecución pública digital de la obra y de recolectar, sea individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, SAYCO), las regalías por la ejecución pública o por la ejecución pública digital de la obra (por ejemplo Webcast) licenciada bajo licencias generales, si la interpretación o ejecución de la obra está primordialmente orientada por o dirigida a la obtención de una ventaja comercial o una compensación monetaria privada.

ii.	Regalías por Fonogramas. El Licenciante se reserva el derecho exclusivo de recolectar, individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, los consagrados por la SAYCO), una agencia de derechos musicales o algún agente designado, las regalías por cualquier fonograma que Usted cree a partir de la obra (“versión cover”) y distribuya, en los términos del régimen de derechos de autor, si la creación o distribución de esa versión cover está primordialmente destinada o dirigida a obtener una ventaja comercial o una compensación monetaria privada.

e.	Gestión de Derechos de Autor sobre Interpretaciones y Ejecuciones Digitales (WebCasting). Para evitar toda confusión, el Licenciante aclara que, cuando la obra sea un fonograma, el Licenciante se reserva el derecho exclusivo de autorizar la ejecución pública digital de la obra (por ejemplo, webcast) y de recolectar, individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, ACINPRO), las regalías por la ejecución pública digital de la obra (por ejemplo, webcast), sujeta a las disposiciones aplicables del régimen de Derecho de Autor, si esta ejecución pública digital está primordialmente dirigida a obtener una ventaja comercial o una compensación monetaria privada.

5. Representaciones, Garantías y Limitaciones de Responsabilidad.
A MENOS QUE LAS PARTES LO ACORDARAN DE OTRA FORMA POR ESCRITO, EL LICENCIANTE OFRECE LA OBRA (EN EL ESTADO EN EL QUE SE ENCUENTRA) “TAL CUAL”, SIN BRINDAR GARANTÍAS DE CLASE ALGUNA RESPECTO DE LA OBRA, YA SEA EXPRESA, IMPLÍCITA, LEGAL O CUALQUIERA OTRA, INCLUYENDO, SIN LIMITARSE A ELLAS, GARANTÍAS DE TITULARIDAD, COMERCIABILIDAD, ADAPTABILIDAD O ADECUACIÓN A PROPÓSITO DETERMINADO, AUSENCIA DE INFRACCIÓN, DE AUSENCIA DE DEFECTOS LATENTES O DE OTRO TIPO, O LA PRESENCIA O AUSENCIA DE ERRORES, SEAN O NO DESCUBRIBLES (PUEDAN O NO SER ESTOS DESCUBIERTOS). ALGUNAS JURISDICCIONES NO PERMITEN LA EXCLUSIÓN DE GARANTÍAS IMPLÍCITAS, EN CUYO CASO ESTA EXCLUSIÓN PUEDE NO APLICARSE A USTED.

6. Limitación de responsabilidad.
A MENOS QUE LO EXIJA EXPRESAMENTE LA LEY APLICABLE, EL LICENCIANTE NO SERÁ RESPONSABLE ANTE USTED POR DAÑO ALGUNO, SEA POR RESPONSABILIDAD EXTRACONTRACTUAL, PRECONTRACTUAL O CONTRACTUAL, OBJETIVA O SUBJETIVA, SE TRATE DE DAÑOS MORALES O PATRIMONIALES, DIRECTOS O INDIRECTOS, PREVISTOS O IMPREVISTOS PRODUCIDOS POR EL USO DE ESTA LICENCIA O DE LA OBRA, AUN CUANDO EL LICENCIANTE HAYA SIDO ADVERTIDO DE LA POSIBILIDAD DE DICHOS DAÑOS. ALGUNAS LEYES NO PERMITEN LA EXCLUSIÓN DE CIERTA RESPONSABILIDAD, EN CUYO CASO ESTA EXCLUSIÓN PUEDE NO APLICARSE A USTED.

7. Término.

a.	Esta Licencia y los derechos otorgados en virtud de ella terminarán automáticamente si Usted infringe alguna condición establecida en ella. Sin embargo, los individuos o entidades que han recibido Obras Derivadas o Colectivas de Usted de conformidad con esta Licencia, no verán terminadas sus licencias, siempre que estos individuos o entidades sigan cumpliendo íntegramente las condiciones de estas licencias. Las Secciones 1, 2, 5, 6, 7, y 8 subsistirán a cualquier terminación de esta Licencia.

b.	Sujeta a las condiciones y términos anteriores, la licencia otorgada aquí es perpetua (durante el período de vigencia de los derechos de autor de la obra). No obstante lo anterior, el Licenciante se reserva el derecho a publicar y/o estrenar la Obra bajo condiciones de licencia diferentes o a dejar de distribuirla en los términos de esta Licencia en cualquier momento; en el entendido, sin embargo, que esa elección no servirá para revocar esta licencia o que deba ser otorgada , bajo los términos de esta licencia), y esta licencia continuará en pleno vigor y efecto a menos que sea terminada como se expresa atrás. La Licencia revocada continuará siendo plenamente vigente y efectiva si no se le da término en las condiciones indicadas anteriormente.

8. Varios.

a.	Cada vez que Usted distribuya o ponga a disposición pública la Obra o una Obra Colectiva, el Licenciante ofrecerá al destinatario una licencia en los mismos términos y condiciones que la licencia otorgada a Usted bajo esta Licencia.

b.	Si alguna disposición de esta Licencia resulta invalidada o no exigible, según la legislación vigente, esto no afectará ni la validez ni la aplicabilidad del resto de condiciones de esta Licencia y, sin acción adicional por parte de los sujetos de este acuerdo, aquélla se entenderá reformada lo mínimo necesario para hacer que dicha disposición sea válida y exigible.

c.	Ningún término o disposición de esta Licencia se estimará renunciada y ninguna violación de ella será consentida a menos que esa renuncia o consentimiento sea otorgado por escrito y firmado por la parte que renuncie o consienta.

d.	Esta Licencia refleja el acuerdo pleno entre las partes respecto a la Obra aquí licenciada. No hay arreglos, acuerdos o declaraciones respecto a la Obra que no estén especificados en este documento. El Licenciante no se verá limitado por ninguna disposición adicional que pueda surgir en alguna comunicación emanada de Usted. Esta Licencia no puede ser modificada sin el consentimiento mutuo por escrito del Licenciante y Usted.
0000-0002-2436-5536a98add1326dbb80bf038dda2d817350a6000000-0002-5049-87541f12a99f8d5bcc67d1eb10c7c07c76a3600