The purpose of this thesis is to study the rough grinding process applied to the flanged outer ring BB1-2755C, a critical component of a specific type of bearing manufactured at the SKF plant located in Bari. This work stems from the need to understand and address issues related to workpiece burning observed during machining operations performed on the SGB55 machine. The adopted approach initially involved a qualitative analysis using an Ishikawa diagram, which was useful in identifying potential root causes of the defect. Subsequently, the most relevant process parameters were selected for an experimental investigation. A statistical analysis was conducted through a Design of Experiments (DOE) in order to understand the impact of different factors on the burning phenomenon. The results allowed for the identification of the most influential grinding parameters, providing practical guidelines for process optimization and defect reduction.
L' elaborato ha come obiettivo lo studio del processo di rettifica di sgrossatura relativo all’anello esterno flangiato BB1-2755C, un componente critico di un particolare tipo di cuscinetto prodotto presso lo stabilimento SKF, sito in Bari. Il lavoro nasce dall’esigenza di comprendere e risolvere problematiche legate alla bruciatura del pezzo, riscontrate durante le lavorazioni effettuate su macchina SGB55. L’approccio adottato si è basato inizialmente su un’analisi qualitativa tramite diagramma di Ishikawa, utile a identificare le possibili cause alla base del difetto. Successivamente, sono stati selezionati i parametri di processo più rilevanti da sottoporre a un’indagine sperimentale. Tramite un DOE è stata condotta un’analisi statistica volta a comprendere l’impatto dei diversi fattori sul fenomeno della bruciatura. I risultati hanno permesso di individuare i parametri di rettifica maggiormente influenti, fornendo indicazioni operative utili per l’ottimizzazione del processo e la riduzione dei difetti.
FATTORI CRITICI DI BRUCIATURA NELLA RETTIFICA DI SGROSSATURA DELLA FLANGIA DELL'ANELLO ESTERNO BB12755C: CASO SKF
LOTTI, DAVIDE
2024/2025
Abstract
The purpose of this thesis is to study the rough grinding process applied to the flanged outer ring BB1-2755C, a critical component of a specific type of bearing manufactured at the SKF plant located in Bari. This work stems from the need to understand and address issues related to workpiece burning observed during machining operations performed on the SGB55 machine. The adopted approach initially involved a qualitative analysis using an Ishikawa diagram, which was useful in identifying potential root causes of the defect. Subsequently, the most relevant process parameters were selected for an experimental investigation. A statistical analysis was conducted through a Design of Experiments (DOE) in order to understand the impact of different factors on the burning phenomenon. The results allowed for the identification of the most influential grinding parameters, providing practical guidelines for process optimization and defect reduction.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.14253/65379