Konceptuell utveckling av modulära monteringspaletter för flexibla monteringslinjer

This bachelor’s thesis presents three concepts for modular assembly pallets designed to efficiently accommodate production with varying product specifications. The study was conducted in collaboration with Scania AB, aiming to support the company’s transition toward more sustainable and flexible production systems. As Scania expands its range of battery electric vehicles while continuing the production of combustion engine vehicles, the need for adaptable assembly solutions has become increasingly important. The overall goal of the project was to develop a standardized base for assembly pallets that enables quick reconfiguration, easy maintenance, secure fastening, and ergonomic handling. The analysis of various fastening methods was a key focus of the project. All concepts are based on the use of a CNC fixture plate as a standardized base component. The first concept features a nylon plate mounted on top of the fixture plate, optionally reinforced with a metal layer, where alignment geometries are milled to allow precise and rotation-secure mounting with only one screw. The second concept involves milling specific shapes directly into the fixture plate to match the contour of the fixture, ensuring a stable fit. The third concept utilizes quick-release fastening elements with cam or ball-lock mechanisms for efficient, tool-free fixture mounting. To avoid the additional machining typically required for ball-lock systems, threaded receivers can be installed in the plate’s existing threaded holes, enabling quick and flexible fastening. All concepts also include the use of sealing plugs in unused holes to maintain a clean surface and minimize the risk of contamination. The concepts were evaluated through a structured theoretical assessment based on stakeholder requirements. Each concept was analyzed against safety, time efficiency, quality, maintainability, and ergonomics using a criteria-based scoring model. The evaluation indicated that Concepts two and three best met the project’s objectives. Concept three excelled in rapid fixture changes and reconfigurability, while Concept three demonstrated strong fastening stability.