Functional geometric specification and tolerance stack-up analysis of mechanical assemblies: an Electrolux case study

This thesis focuses on the importance of adopting an integrated approach in the product development process of mechanical assemblies. It highlights the critical role of technical drawings, drafted according to ISO GPS standards, in communicating correctly, coherently and completely functional requirements, especially when a stack-up analysis is required. This thesis aims to achieve two main goals. The first is to apply and combine tools and methods found in scientific literature to define the functional geometric specification according to the ISO GPS system and then implement it in CAD environment. The second goal is to develop and organize a method to calculate the stack-up analysis in a spreadsheet, starting from a specification that follows the ISO Technical Committee 213 (ISO/TC213) standards. To achieve this, a case study provided by Electrolux is analysed, enabling the application of theoretical methods to an industrial scenario to solve a malfunction in a complex assembly.