{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,10]],"date-time":"2026-01-10T03:40:24Z","timestamp":1768016424246,"version":"3.49.0"},"reference-count":27,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2025,4,30]],"date-time":"2025-04-30T00:00:00Z","timestamp":1745971200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JMMP"],"abstract":"<jats:p>In a competitive industrial setting, optimizing machining processes is important for enhancing surface quality and productivity. This study focuses on optimizing pocket milling parameters for 5083 H111 aluminum alloy using three toolpath strategies: Zig-Zag, Parallel Spiral, and One-Way. To achieve these goals, the Taguchi method, Grey Relational Analysis (GRA), ANOVA, and visual amplification were employed to evaluate the influence of cutting speed (Vc), feed per tooth (fz), and axial depth of cut (ap) on surface roughness and production rate. For the Zig-Zag and Parallel Spiral tool paths, cutting speed was the most important factor affecting surface roughness. For the One-Way strategy, axial penetration was the most important factor. The Parallel Spiral toolpath, under the Vc of 150 m\/min, the fz of 0.025 mm\/tooth, and the ap of 1.0 mm (A3-B3-C1) configuration, achieved the best balance between surface finish and production rate. Visual analysis also showed significative differences in how rough the wall was along perpendicular and parallel tool paths, which made it clear that finishing passes are needed in some cases. This research shows that using both statistical methods and visual amplification together makes process optimization more organized and effective, which leads to better machining performance.<\/jats:p>","DOI":"10.3390\/jmmp9050148","type":"journal-article","created":{"date-parts":[[2025,5,1]],"date-time":"2025-05-01T05:10:32Z","timestamp":1746076232000},"page":"148","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Optimization of Machining Parameters for the Fixed Pocket Cycle"],"prefix":"10.3390","volume":"9","author":[{"given":"Felipe","family":"Stein","sequence":"first","affiliation":[{"name":"Instituto Polit\u00e9cnico de Bragan\u00e7a, Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"given":"Nickolas","family":"Giacomitti","sequence":"additional","affiliation":[{"name":"Instituto Polit\u00e9cnico de Bragan\u00e7a, Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"given":"Gustavo","family":"Val\u00e9rio","sequence":"additional","affiliation":[{"name":"Instituto Polit\u00e9cnico de Bragan\u00e7a, Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"given":"Jorge","family":"Paulo","sequence":"additional","affiliation":[{"name":"Instituto Polit\u00e9cnico de Bragan\u00e7a, Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"given":"Jo\u00e3o","family":"Rocha","sequence":"additional","affiliation":[{"name":"Instituto Polit\u00e9cnico de Bragan\u00e7a, Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6300-148X","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Instituto Polit\u00e9cnico de Bragan\u00e7a, Campus Santa Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"},{"name":"Centro de Investiga\u00e7\u00e3o de Montanha (CIMO), Instituto Polit\u00e9cnico de Bragan\u00e7a, Campus S. Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"},{"name":"Laborat\u00f3rio Associado Para a Sustentabilidade e Tecnologia em Regi\u00f5es de Montanha (SusTEC), Instituto Polit\u00e9cnico de Bragan\u00e7a, Campus S. Apol\u00f3nia, 5300-253 Bragan\u00e7a, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"833","DOI":"10.1016\/S0890-6955(03)00059-2","article-title":"Predicting surface roughness in machining: A review","volume":"43","author":"Benardos","year":"2003","journal-title":"Int. J. Mach. Tools Manuf."},{"key":"ref_2","unstructured":"Trent, E.M., and Wright, P.K. (2000). Metal Cutting, Butterworth-Heinemann."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.ijmachtools.2003.08.011","article-title":"Experimental study of surface roughness in slot end milling al2014-t6","volume":"44","author":"Wang","year":"2004","journal-title":"Int. J. Mach. Tools Manuf."},{"key":"ref_4","first-page":"390","article-title":"Surface roughness prediction by factorial design of experiments in turning processes","volume":"143","year":"2003","journal-title":"J. Mater. Process. Technol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"122","DOI":"10.1016\/S0924-0136(98)00079-X","article-title":"Design optimization of cutting parameters for turning operations based on the taguchi method","volume":"84","author":"Yang","year":"1998","journal-title":"J. Mater. Process. Technol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1016\/j.jmatprotec.2006.11.029","article-title":"Surface roughness optimization in an end-milling operation using the taguchi design method","volume":"184","author":"Zhang","year":"2007","journal-title":"J. Mater. Process. Technol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1016\/j.measurement.2017.09.051","article-title":"Optimization of drilling parameters for drilling of ti-6al-4v based on surface roughness, flank wear and drill vibration","volume":"114","author":"Balaji","year":"2018","journal-title":"Measurement"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1016\/S0924-0136(01)01063-9","article-title":"A note on the determination of optimal cutting conditions for surface finish obtained in turning using design of ex-periments","volume":"116","author":"Davim","year":"2001","journal-title":"J. Mater. Process. Technol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1379","DOI":"10.1016\/j.matdes.2006.01.008","article-title":"Application of taguchi method in the optimization of cutting parameters for surface roughness in turning","volume":"28","author":"Nalbant","year":"2007","journal-title":"Mater. Des."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1016\/j.measurement.2017.07.020","article-title":"Optimisation of machining parameters during ball end milling of hardened steel with various surface inclinations","volume":"111","author":"Wojciechowski","year":"2017","journal-title":"Measurement"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"424","DOI":"10.1016\/j.ijmecsci.2017.10.032","article-title":"Mechanical and technological aspects of micro ball end milling with various tool inclinations","volume":"134","author":"Wojciechowski","year":"2017","journal-title":"Int. J. Mech. Sci."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"582","DOI":"10.1016\/j.precisioneng.2017.10.014","article-title":"Application of signal to noise ratio and grey relational analysis to minimize forces and vibrations during precise ball end milling","volume":"51","author":"Wojciechowski","year":"2018","journal-title":"Precis. Eng."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1016\/j.cirp.2009.03.054","article-title":"Tool path optimization for free form surface machining","volume":"58","author":"Lazoglu","year":"2009","journal-title":"CIRP Ann."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1016\/j.measurement.2017.01.057","article-title":"Multi-objective optimization of multi-axis ball-end milling inconel 718 via grey relational analysis coupled with rbf neural network and pso algorithm","volume":"102","author":"Zhou","year":"2017","journal-title":"Measurement"},{"key":"ref_15","first-page":"10","article-title":"Optimization of Machining Parameters for MRR and Surface Roughness for 7024 AL-alloy in Pocket Milling Process","volume":"26","author":"Abdulrazaq","year":"2019","journal-title":"Assoc. Arab. Univ. J. Eng. Sci."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Upadrashta, A., Saravanan, S., and Annamalai, A.R. (2024). Experimental Study on Dry Milling of Stir-Casted and Heat-Treated Mg-Gd-Y-Er Alloy Using TOPSIS. J. Manuf. Mater. Process., 8.","DOI":"10.3390\/jmmp8050205"},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Felh, C., Tesfom, F., and Varga, G. (2023). ANOVA Analysis and L9Taguchi Design for Examination of Flat Slide Burnishing of Unalloyed Structural Carbon Steel. J. Manuf. Mater. Process., 7.","DOI":"10.3390\/jmmp7040136"},{"key":"ref_18","unstructured":"Ross, P.J. (1988). Taguchi Techniques for Quality Engineering: Loss Function, Orthogonal Experiments, Parameter and Tolerance Design, McGraw-Hill."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"30","DOI":"10.3311\/PPme.9114","article-title":"Optimization of cutting parameters to minimize the surface roughness in the end milling process using the taguchi method","volume":"61","author":"Ribeiro","year":"2017","journal-title":"Period. Polytech. Mech. Eng."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"3808","DOI":"10.1016\/j.jmatprotec.2008.08.030","article-title":"Grey relational analysis coupled with principal component analysis for optimization design of the cutting parameters in high-speed end milling","volume":"209","author":"Lu","year":"2009","journal-title":"J. Mater. Process. Technol."},{"key":"ref_21","unstructured":"Metalthaga (2024, January 06). Technical Table\u2014ALUMINUM ALLOY 5083-H111. Available online: https:\/\/metalthaga.com.br\/wp-content\/uploads\/2019\/09\/liga-de-aluminio-5083-h111.pdf."},{"key":"ref_22","unstructured":"Starkey, C.V. (1992). Engineering Design Decisions, E. Arnold."},{"key":"ref_23","unstructured":"Cimbala, J.M. (2014). Taguchi Orthogonal Arrays, Pennsylvania State University."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Hamza\u00e7ebi, C., Li, P., Pereira, P.A.R., and Navas, H. (2020). Taguchi method as a robust design tool. Quality Control: Intelligent Manufacturing, Robust Design and Charts, IntechOpen.","DOI":"10.5772\/intechopen.94908"},{"key":"ref_25","first-page":"1","article-title":"Introduction to grey system theory","volume":"1","author":"Julong","year":"1989","journal-title":"J. Grey Syst."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"407","DOI":"10.1007\/s00477-006-0034-9","article-title":"Application of grey correlation method to evaluate potential groundwater recharge sites","volume":"20","author":"Gau","year":"2006","journal-title":"Stoch. Environ. Res. Risk Assess."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Liu, S., and Lin, Y. (2010). Grey Systems, Springer.","DOI":"10.1007\/978-3-642-16158-2"}],"container-title":["Journal of Manufacturing and Materials Processing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2504-4494\/9\/5\/148\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T17:25:16Z","timestamp":1760030716000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2504-4494\/9\/5\/148"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,4,30]]},"references-count":27,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2025,5]]}},"alternative-id":["jmmp9050148"],"URL":"https:\/\/doi.org\/10.3390\/jmmp9050148","relation":{},"ISSN":["2504-4494"],"issn-type":[{"value":"2504-4494","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,4,30]]}}}