Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1517-707620170003.0198 http://hdl.handle.net/11449/179086 |
Resumo: | Despite of technological advances in developments of cutting tools such as carbide inserts, ceramic materials and others in the last three decades, some of cutting tools still needs to have their cutting geometry restored due to wear through the sharpening operation with abrasive wheels. Sharpening aims to provide shape either to new cutting tools and worn ones. The efficiency of this operation depends on the correct selection of cutting parameters, machine tool and operator’s ability. In this process, if an improper cutting parameter is selected, the workpiece geometry can be compromised and, at the worst-case scenario, surface burning can occur, thereby leading to reduction of tool hardness. Tool hardness and strength are essential to withstand cutting forces during machining, for example, when a lathe tool bit is employed for cylindrical turning of a mild steel. In this context, this work presents an experimental study on the sharpening operation of HSS lathe tool bit using four different values of depth of cut. The grinding wheel employed was a straight cup white aluminium oxide, which is highly recommended for such operation. The workpiece material was the high speed steel (HSS) with hardness of 62 ± 2 HRC. The output parameters evaluated were the values of the rake angle, side cutting edge angle and end cutting edge angle, that were all measured with aid of a profile projector and a universal protractor (only for the rake angle). All the experimental trials were replicated once and the angles were measured five times. Statistical analyses of the results were performed to evaluate the statistical significance of comparisons and the measurement uncertainty was calculated. The results showed that all the angles were affected by the depth of cut, as expected, and the highest angles accuracy was obtained after machining with a depth of cut of 0.06 mm. No burrs and burning of the machined surfaces were observed. |
id |
UNSP_74fd8c0119f970a6c99f29dd398faa0c |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/179086 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápidoContribution to sharpening operation of HSS lathe tool bitAnglesDepth of cutMachiningMeasurement uncertaintySharpening cutting toolsDespite of technological advances in developments of cutting tools such as carbide inserts, ceramic materials and others in the last three decades, some of cutting tools still needs to have their cutting geometry restored due to wear through the sharpening operation with abrasive wheels. Sharpening aims to provide shape either to new cutting tools and worn ones. The efficiency of this operation depends on the correct selection of cutting parameters, machine tool and operator’s ability. In this process, if an improper cutting parameter is selected, the workpiece geometry can be compromised and, at the worst-case scenario, surface burning can occur, thereby leading to reduction of tool hardness. Tool hardness and strength are essential to withstand cutting forces during machining, for example, when a lathe tool bit is employed for cylindrical turning of a mild steel. In this context, this work presents an experimental study on the sharpening operation of HSS lathe tool bit using four different values of depth of cut. The grinding wheel employed was a straight cup white aluminium oxide, which is highly recommended for such operation. The workpiece material was the high speed steel (HSS) with hardness of 62 ± 2 HRC. The output parameters evaluated were the values of the rake angle, side cutting edge angle and end cutting edge angle, that were all measured with aid of a profile projector and a universal protractor (only for the rake angle). All the experimental trials were replicated once and the angles were measured five times. Statistical analyses of the results were performed to evaluate the statistical significance of comparisons and the measurement uncertainty was calculated. The results showed that all the angles were affected by the depth of cut, as expected, and the highest angles accuracy was obtained after machining with a depth of cut of 0.06 mm. No burrs and burning of the machined surfaces were observed.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Universidade Federal de Uberlândia Faculdade de Engenharia Mecânica, Campus Santa MônicaUniversidade Estadual Paulista – UNESP Faculdade de Engenharia de Bauru, Av. Luiz Edmundo Carrijo CoubeUniversidade Estadual Paulista – UNESP Faculdade de Engenharia de Bauru, Av. Luiz Edmundo Carrijo CoubeCAPES: 00265-13CNPq: 00265-13FAPEMIG: 00265-13Universidade Federal de Uberlândia (UFU)Universidade Estadual Paulista (Unesp)De Paiva, Raphael LimaDa Silva, Rosemar BatistaArencibia, Rosenda ValdésRuzzi, Rodrigo De Souza [UNESP]Bianchi, Eduardo Carlos [UNESP]de Aguiar, Paulo Roberto [UNESP]2018-12-11T17:33:39Z2018-12-11T17:33:39Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/S1517-707620170003.0198Revista Materia, v. 22, n. 3, 2017.1517-7076http://hdl.handle.net/11449/17908610.1590/S1517-707620170003.01982-s2.0-850271105902-s2.0-85027110590.pdf14554003096600810000-0002-9934-4465Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Materia0,188info:eu-repo/semantics/openAccess2023-10-18T06:04:27Zoai:repositorio.unesp.br:11449/179086Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-18T06:04:27Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido Contribution to sharpening operation of HSS lathe tool bit |
title |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido |
spellingShingle |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido De Paiva, Raphael Lima Angles Depth of cut Machining Measurement uncertainty Sharpening cutting tools |
title_short |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido |
title_full |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido |
title_fullStr |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido |
title_full_unstemmed |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido |
title_sort |
Contribuição ao processo de afiação de ferramentas monocortantes de aço rápido |
author |
De Paiva, Raphael Lima |
author_facet |
De Paiva, Raphael Lima Da Silva, Rosemar Batista Arencibia, Rosenda Valdés Ruzzi, Rodrigo De Souza [UNESP] Bianchi, Eduardo Carlos [UNESP] de Aguiar, Paulo Roberto [UNESP] |
author_role |
author |
author2 |
Da Silva, Rosemar Batista Arencibia, Rosenda Valdés Ruzzi, Rodrigo De Souza [UNESP] Bianchi, Eduardo Carlos [UNESP] de Aguiar, Paulo Roberto [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Uberlândia (UFU) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
De Paiva, Raphael Lima Da Silva, Rosemar Batista Arencibia, Rosenda Valdés Ruzzi, Rodrigo De Souza [UNESP] Bianchi, Eduardo Carlos [UNESP] de Aguiar, Paulo Roberto [UNESP] |
dc.subject.por.fl_str_mv |
Angles Depth of cut Machining Measurement uncertainty Sharpening cutting tools |
topic |
Angles Depth of cut Machining Measurement uncertainty Sharpening cutting tools |
description |
Despite of technological advances in developments of cutting tools such as carbide inserts, ceramic materials and others in the last three decades, some of cutting tools still needs to have their cutting geometry restored due to wear through the sharpening operation with abrasive wheels. Sharpening aims to provide shape either to new cutting tools and worn ones. The efficiency of this operation depends on the correct selection of cutting parameters, machine tool and operator’s ability. In this process, if an improper cutting parameter is selected, the workpiece geometry can be compromised and, at the worst-case scenario, surface burning can occur, thereby leading to reduction of tool hardness. Tool hardness and strength are essential to withstand cutting forces during machining, for example, when a lathe tool bit is employed for cylindrical turning of a mild steel. In this context, this work presents an experimental study on the sharpening operation of HSS lathe tool bit using four different values of depth of cut. The grinding wheel employed was a straight cup white aluminium oxide, which is highly recommended for such operation. The workpiece material was the high speed steel (HSS) with hardness of 62 ± 2 HRC. The output parameters evaluated were the values of the rake angle, side cutting edge angle and end cutting edge angle, that were all measured with aid of a profile projector and a universal protractor (only for the rake angle). All the experimental trials were replicated once and the angles were measured five times. Statistical analyses of the results were performed to evaluate the statistical significance of comparisons and the measurement uncertainty was calculated. The results showed that all the angles were affected by the depth of cut, as expected, and the highest angles accuracy was obtained after machining with a depth of cut of 0.06 mm. No burrs and burning of the machined surfaces were observed. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 2018-12-11T17:33:39Z 2018-12-11T17:33:39Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1517-707620170003.0198 Revista Materia, v. 22, n. 3, 2017. 1517-7076 http://hdl.handle.net/11449/179086 10.1590/S1517-707620170003.0198 2-s2.0-85027110590 2-s2.0-85027110590.pdf 1455400309660081 0000-0002-9934-4465 |
url |
http://dx.doi.org/10.1590/S1517-707620170003.0198 http://hdl.handle.net/11449/179086 |
identifier_str_mv |
Revista Materia, v. 22, n. 3, 2017. 1517-7076 10.1590/S1517-707620170003.0198 2-s2.0-85027110590 2-s2.0-85027110590.pdf 1455400309660081 0000-0002-9934-4465 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Materia 0,188 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803046044895805440 |