Original scientific paper

https://doi.org/10.21278/TOF.481056323

An Investigation Into the Applicability of EN24 Steel for Shrink-Fit Tool Holders for CNC Milling Machines

Matija Bauer ; Sveučilište Jurja Dobrile u Puli, Tehnički fakultet, Pula, Hrvatska
Damir Karabaić orcid.org/0000-0001-6151-2235 ; Sveučilište Jurja Dobrile u Puli, Tehnički fakultet, Pula, Hrvatska *
Marko Kršulja orcid.org/0000-0003-0823-8083 ; Sveučilište Jurja Dobrile u Puli, Tehnički fakultet, Pula, Hrvatska
Matija Jurcan orcid.org/0009-0006-2883-4084 ; Sveučilište Jurja Dobrile u Puli, Tehnički fakultet, Pula, Hrvatska

* Corresponding author.

Abstract

This paper investigates the possibility of using an alternative steel material EN 10250 36CrNiMo4/1.6511 (EN24 steel) in the production of shrink-fit tool holders for CNC machining centres. The alternative material has different thermal properties compared to the standard manufacturing material for tool holders (H13 steel), while the mechanical properties are similar. The structural and thermal stress finite element analysis together with the fatigue analysis are performed on a designed model of a tool holder with a shrink-fit clamping head and standard interface for required limiting working conditions. The application of the alternative material combined with the production process optimisation results in reductions in costs and time of producing tool holders, while adhering to all limitations and parameters prescribed by the corresponding standard. Due to higher thermal stresses during tool changes, the usage of an alternative material would be justified for processes where one type of tool is frequently used and the tool lifespan is long.

Keywords

milling machine; shrink-fit tool holder; EN24 steel; finite element analysis

Hrčak ID:

312876

URI

https://hrcak.srce.hr/312876

Publication date:

1.1.2024.

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