Author(s): Santos, António Duarte ; Ávila, Paulo ; Santos, Bebiana ; Mota, Alzira ; Castro, Hélio ; Ferreira, Luís Pinto ; Bastos, João ; Sá, José Carlos ; Moreira, Joaquim ; Santos, Gilberto
Date: 2025
Persistent ID: https://hdl.handle.net/11144/7590
Origin: Camões - Repositório Institucional da Universidade Autónoma de Lisboa
Subject(s): process planning; variant process planning; knowledge-based variant process planning; case study; continuous improvement
Purpose: This study addresses the development of a variant process planning tool, following the Knowledge-Based Variant Process Planning methodology, applied in a case study and presents the gains achieved. Methodology/Approach: Case study supported by six steps: (1) Feature Analysis, (2) Knowledge Retrieval, (3) Inference, (4) Plan Adaptation, (5) Knowledge Update, and (6) Plan Validation/Optimisation. Findings: The implementation of the Knowledge-Based Variant Process Planning tool led to significant improvements: planner time reduced by 70%, analyst workload by 90%, and process plan errors to 0%. Results show this approach significantly improves process planning in customised production. Research Limitation/Implication: The limitations are associated with the specificity of the case study problem – the electric engine production systems. Originality/Value of paper: This study helps fill the gap in case studies on the Variant Process Planning approach, specifically for electric engine production systems, paving the way for similar companies to adopt Knowledge-Based Variant Process Planning.
