Optimal machining strategy selection in ball-end milling of hardened steels for injection molds
| dc.contributor.author | Buj Corral, Irene | |
| dc.contributor.author | Ortiz Marzo, José Antonio | |
| dc.contributor.author | Costa Herrero, Lluís | |
| dc.contributor.author | Vivancos Calvet, Joan | |
| dc.contributor.author | Luis Pérez, Carmelo Javier | |
| dc.contributor.department | Ingeniería | es_ES |
| dc.contributor.department | Ingeniaritza | eu |
| dc.date.accessioned | 2019-11-25T13:16:00Z | |
| dc.date.available | 2019-11-25T13:16:00Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | In the present study, the groups of cutting conditions that minimize surface roughness and its variability are determined, in ball-end milling operations. Design of experiments is used to define experimental tests performed. Semi-cylindrical specimens are employed in order to study surfaces with different slopes. Roughness was measured at different slopes, corresponding to inclination angles of 15 degrees, 45 degrees, 75 degrees, 90 degrees, 105 degrees, 135 degrees and 165 degrees for both climb and conventional milling. By means of regression analysis, second order models are obtained for average roughness Ra and total height of profile Rt for both climb and conventional milling. Considered variables were axial depth of cut a(p), radial depth of cut a(e), feed per tooth f(z,) cutting speed v(c,) and inclination angle Ang. The parameter a(e) was the most significant parameter for both Ra and Rt in regression models. Artificial neural networks (ANN) are used to obtain models for both Ra and Rt as a function of the same variables. ANN models provided high correlation values. Finally, the optimal machining strategy is selected from the experimental results of both average and standard deviation of roughness. As a general trend, climb milling is recommended in descendant trajectories and conventional milling is recommended in ascendant trajectories. This study will allow the selection of appropriate cutting conditions and machining strategies in the ball-end milling process. | en |
| dc.description.sponsorship | This research was funded by the Spanish Ministry of Science and Technology, grant number DPI 2003-04727. | en |
| dc.format.extent | 14 p. | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.3390/ma12060860 | |
| dc.identifier.issn | 1996-1944 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/35452 | |
| dc.language.iso | eng | en |
| dc.publisher | MDPI | en |
| dc.relation.ispartof | Materials, 2019, 12(6), 860 | en |
| dc.relation.publisherversion | https://doi.org/10.3390/ma12060860 | |
| dc.rights | © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Surface finish | en |
| dc.subject | High speed milling (HSM) | en |
| dc.subject | Roughness | en |
| dc.subject | Modeling | en |
| dc.title | Optimal machining strategy selection in ball-end milling of hardened steels for injection molds | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion | |
| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | f3b1f886-f01b-4881-9dbc-709b62a3f866 | |
| relation.isAuthorOfPublication.latestForDiscovery | f3b1f886-f01b-4881-9dbc-709b62a3f866 |