Robotiserad tillverkning av prefabricerade väggelement
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
This report includes a thesis carried out by Fredrik Almers and Manne Hellsing, students at Mälardalen University in the engineering program, Innovation and product design. The assignment has been carried out in behalf of Robotdalen (Västerås, Sweden) in the period 2015-01-20 – 2015-06-11. The assignment was to explore possibilities of manufacturing prefabricated wall elements using industrial robots. The task also included to determine which robot tools that was needed and also designing one of them. The purpose of the assignment was to develop the first robot tool required for the manufacturing and to investigate whether the production time can be reduced by 70 percent compared to manual work.
To be able to address the problem in a scientific way, the project was split into three phases. The first concerning information gathering, the second concept development and the third the design of the tool.
The data collection included analyzing literature, previous work that had been done in the project and conducting study visits. At this stage it was also revealed which tools were necessary and which one of these that would be designed. It takes six different tools to manufacture a wall element and the one that were designed was a multifunctional beam assembly tool. A function analysis and a requirements specification were also established in this phase. They were used as a basis for further work.
The goal of the concept generation phase was to develop a final concept where the basic features of the tool was presented. The problem was divided into two parts and each part solution was developed and evaluated individually. Through discussions and the use of appropriate product development tools a final concept could be established. The functions of the final concept was to grab hold of the wooden beam, compress it with another beam and then nail them together. To solve this, existing components as grippers, pneumatic cylinders and linear units were used.
The goal of the design phase was to go from a fundamental principle concept to a fully finished and fully specified design. To achieve this CAD were used to calculate the components strength and how they would work together. Trough contact and advice collected from the suppliers the various components were selected. The designing of the tool has been based on the requirement specifications and the function analysis.
The result of this project is a robotic tool that manages to nail together two wooden beams with two nails in under five seconds. It does not require any help to accomplish this task and can handle several different beam dimensions. The tool is designed with a frame of aluminum profiles, whereupon the necessary components for the task are installed. Thus it is easy to maintain and change the design of the tool if needed. With the help of this tool, the production time for a wall element is reduced up to 90 percent, according to simulations in the CAD environment compared to manual work.
Place, publisher, year, edition, pages
2015. , 78 p.
robotverktyg, prefab, automation, hus, väggelement
Robotics Engineering and Technology
IdentifiersURN: urn:nbn:se:mdh:diva-29308OAI: oai:DiVA.org:mdh-29308DiVA: diva2:859746
Subject / course
Product and Process Development
2015-06-11, Eskilstuna, 09:00 (Swedish)
Gustafsson, BengtReyier, IngemarHellström, Erik
Grahn, Sten, Universitetslektor i produkt- och processutveckling