This thesis explores the identification, analysis, and resolution of production defects within Iveco Defence Vehicles S.p.A. (IDV) and examines the methodologies employed to enhance manufacturing efficiency. The study is based on a six-month internship at IDV, during which production defects were analyzed, categorized, and addressed to reduce rework time and improve overall department efficiency. The first part of the thesis introduces IDV’s organization and production environment, providing an overview of the company’s manufacturing processes and vehicle types. The focus then shifts to the main challenges affecting the production unit, including supply chain delays, engineering design issues, material defects from suppliers, and workforce-related inefficiencies. To systematically address these challenges, a structured defect resolution methodology was developed, where team leading skills play a fundamental role in gathering defects directly from workers and effectively addressing them through a structured escalation system, first to Supervisors, and eventually to the Unit Manager for further intervention. The core of this study provides a detailed analysis of the real defects encountered during the internship, showing the cross functional collaboration with quality department in identification, prioritization, and classification within the 4M1D framework (Man, Method, Material, Machine, Design), along with the corrective actions implemented to address them. Additionally, the thesis explores improvement projects aimed at developing new production strategies and infrastructure enhancements to further optimize efficiency. The results of this study demonstrate a significant reduction in rework time, with several hours saved, on average, per vehicle. Future developments include reinforcing the pyramidal defect resolution structure, enhancing cooperation between different levels of the company, and improving interdepartmental collaboration. By promoting this culture, IDV will become stronger and able to sustain long term gains in production efficiency, quality, and cost reduction.
La presente tesi esplora l'identificazione, l'analisi e la risoluzione dei difetti di produzione all'interno di Iveco Defence Vehicles S.p.A. (IDV), esaminando le metodologie adottate per migliorare l'efficienza produttiva. Lo studio si basa su un tirocinio di sei mesi presso IDV, durante il quale i difetti di produzione sono stati analizzati, classificati e risolti, con l'obiettivo di ridurre i tempi di rilavorazione e aumentare l'efficienza complessiva del reparto. Nella prima parte, la tesi introduce l'organizzazione e l'ambiente produttivo di IDV, fornendo una panoramica dei processi produttivi e dei veicoli realizzati dall’azienda. Successivamente, si analizzano le principali criticità del reparto produttivo, tra cui i ritardi nella catena di fornitura, i problemi di progettazione ingegneristica, i difetti dei materiali dai fornitori e le inefficienze legate alla forza lavoro. Per affrontare in modo sistematico alcune di queste problematiche, è stata sviluppata una metodologia strutturata per la risoluzione dei difetti in cui le capacità di team leading rivestono un ruolo fondamentale nel raccogliere i problemi direttamente dai lavoratori e nel risolverli tramite un sistema di escalation: prima passando per i supervisori, poi, se necessario, al responsabile dell'unità per un ulteriore intervento. Il cuore dello studio fornisce anche un’analisi dettagliata dei difetti riscontrati durante il tirocinio, evidenziando la collaborazione con il reparto di Qualità per la loro identificazione, prioritizzazione, classificazione con modello 4M1D (Man, Method, Material, Machine, Design), e le azioni correttive implementate per risolverli. Inoltre, vengono descritti i progetti di miglioramento volti a sviluppare nuove strategie produttive e infrastrutturali per ottimizzare ulteriormente l’efficienza. I risultati mostrano una riduzione significativa dei tempi di rilavorazione, con un risparmio medio di diverse ore per veicolo. Gli sviluppi futuri prevedono un rafforzamento della struttura di risoluzione dei difetti e il miglioramento della collaborazione tra i diversi livelli aziendali e tra dipartimenti. Promuovendo questa strategia, IDV potrà sostenere più agevolmente i miglioramenti nel lungo periodo in termini di efficienza produttiva, qualità e riduzione dei costi.
Improving defect resolution with a structured and team-oriented methodology in the assembly unit of Iveco defence vehicles
Corradetti, Marco
2023/2024
Abstract
This thesis explores the identification, analysis, and resolution of production defects within Iveco Defence Vehicles S.p.A. (IDV) and examines the methodologies employed to enhance manufacturing efficiency. The study is based on a six-month internship at IDV, during which production defects were analyzed, categorized, and addressed to reduce rework time and improve overall department efficiency. The first part of the thesis introduces IDV’s organization and production environment, providing an overview of the company’s manufacturing processes and vehicle types. The focus then shifts to the main challenges affecting the production unit, including supply chain delays, engineering design issues, material defects from suppliers, and workforce-related inefficiencies. To systematically address these challenges, a structured defect resolution methodology was developed, where team leading skills play a fundamental role in gathering defects directly from workers and effectively addressing them through a structured escalation system, first to Supervisors, and eventually to the Unit Manager for further intervention. The core of this study provides a detailed analysis of the real defects encountered during the internship, showing the cross functional collaboration with quality department in identification, prioritization, and classification within the 4M1D framework (Man, Method, Material, Machine, Design), along with the corrective actions implemented to address them. Additionally, the thesis explores improvement projects aimed at developing new production strategies and infrastructure enhancements to further optimize efficiency. The results of this study demonstrate a significant reduction in rework time, with several hours saved, on average, per vehicle. Future developments include reinforcing the pyramidal defect resolution structure, enhancing cooperation between different levels of the company, and improving interdepartmental collaboration. By promoting this culture, IDV will become stronger and able to sustain long term gains in production efficiency, quality, and cost reduction.File | Dimensione | Formato | |
---|---|---|---|
Tesi_Definitiva.pdf
non accessibile
Descrizione: Testo della Tesi
Dimensione
14.1 MB
Formato
Adobe PDF
|
14.1 MB | Adobe PDF | Visualizza/Apri |
I documenti in POLITesi sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/10589/234309