Lönsammare framtagning av kulventiler
med avseende på tillverkningsprocess och materialbesparing
AbstractThis is a thesis done in cooperation with the firm Somas and University of Karlstad. The project is an independent final examination part of the program in Innovation and DesignEngineering comprising 22.5 points, and performed by Mia Myrén Zreloff during spring term 2012. In parallel and collaboration, Fredrik Kjellin performs a similar job for the same company and with the same extent, but for the Program in Mechanical Engineering.The client and supervisor at the company have been Magnus Jansson and Anders Josefsson. At Karlstad University has technical supervisor been Hans Johansson, and in the design- and development process it was Monica Jakobsson. Examiner has been Fredrik Thuvander, professor in the Faculty of Technology and Science at Karlstad University.The mission has been to make a basis work for the company's own development and make a computational model to calculate, visualize and implement materials and other solutions in the manufacture of the company's ball valves.The project has undergone three major phases that included thorough study of the company, production, the problem and product. Since the product development phase in which the calculations, idea generation, analysis and concept selection has been completed. Final solution was adapted to the user and the company for final presentation and transfer.The result was the calculation files for different kinds of manufacturing treatments that show stresses and deformations, also suggest improvements in production and development of the product:Material savingsThinner, minimum valve house wallThe wall thickness can be reduced down to 1.25 mm without tension or deformation becomes too high.?Luggs?Other improvements:No precast hole for the steering spindleReview of additional casting material, "green body"New way of clamping the valve of the machining centerThe material saving solutions developed have been demonstrated with CAD-models, FEM-analysis and calculations.If all proposed and developed ideas are implemented, materials purchasing costs can be reduced by 56 %.