The growing request of extremely accurate small parts in the last decades led to the disruptive employment of micro-milling processes. Despite conventional milling knowledge is widespread in the industrial field, its application at micro-level remains a big effort because of phenomena usually neglectable at macro-scale, such as the so-called size-effect and tool run-out. Therefore, to correctly evaluate micro-milling forces, a model able to consider these effects is mandatory. In this paper a mechanistic model for predicting cutting forces in micro-milling of Ti-6Al-4V specimens, considering ploughing and tool run-out effects, is presented. The proposed model concerns the introduction of a dedicated coefficient for considering ploughing and shearing effects on tangential and radial components of the cutting forces. Differently from the previous scholars, the coefficients related to ploughing regime have been considered as a function of the specific cutting pressure. In turn, this latter has been characterized by a regression power law dependent on the feed rate since, in this regime, it has a significant influence. The good agreement between analytical and experimental results enforces the proposed model capabilities.

(2024). An analytical micro-milling force model based on the specific cutting pressure-feed dependence, in presence of ploughing and tool run-out effects [journal article - articolo]. In JOURNAL OF MANUFACTURING PROCESSES. Retrieved from https://hdl.handle.net/10446/271772

An analytical micro-milling force model based on the specific cutting pressure-feed dependence, in presence of ploughing and tool run-out effects

Cappellini, Cristian;
2024-01-01

Abstract

The growing request of extremely accurate small parts in the last decades led to the disruptive employment of micro-milling processes. Despite conventional milling knowledge is widespread in the industrial field, its application at micro-level remains a big effort because of phenomena usually neglectable at macro-scale, such as the so-called size-effect and tool run-out. Therefore, to correctly evaluate micro-milling forces, a model able to consider these effects is mandatory. In this paper a mechanistic model for predicting cutting forces in micro-milling of Ti-6Al-4V specimens, considering ploughing and tool run-out effects, is presented. The proposed model concerns the introduction of a dedicated coefficient for considering ploughing and shearing effects on tangential and radial components of the cutting forces. Differently from the previous scholars, the coefficients related to ploughing regime have been considered as a function of the specific cutting pressure. In turn, this latter has been characterized by a regression power law dependent on the feed rate since, in this regime, it has a significant influence. The good agreement between analytical and experimental results enforces the proposed model capabilities.
articolo
2024
Cappellini, Cristian; Abeni, Andrea
(2024). An analytical micro-milling force model based on the specific cutting pressure-feed dependence, in presence of ploughing and tool run-out effects [journal article - articolo]. In JOURNAL OF MANUFACTURING PROCESSES. Retrieved from https://hdl.handle.net/10446/271772
File allegato/i alla scheda:
File Dimensione del file Formato  
1-s2.0-S152661252400197X-main_compressed.pdf

Solo gestori di archivio

Versione: publisher's version - versione editoriale
Licenza: Licenza default Aisberg
Dimensione del file 1.84 MB
Formato Adobe PDF
1.84 MB Adobe PDF   Visualizza/Apri
Pubblicazioni consigliate

Aisberg ©2008 Servizi bibliotecari, Università degli studi di Bergamo | Terms of use/Condizioni di utilizzo

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/271772
Citazioni
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact