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Konstruktion för optimerad spånavledning på en bearbetningsfixtur / Design for Optimized Metal Chip removal from a Machining Fixture.Larsson, Erik January 2020 (has links)
Thesis project of Bachelor of Science in Mechanical Engineering, MSGC17, is the final exam course at the mechanical engineering program at Karlstad University. This thesis project is carried out at the wheel loader manufacturer Volvo Construction Equipment in Arvika during the spring term 2020. The objective with this thesis is to develop complete technical drawings together with a scale model of a design solution. The target is to design a solution that will enable improved removal of metal chips and thereby reduce the amount of metal chips which remains on the fixture after the machining. The work has been carried out according to a product development process where important steps has been included such as planning, concept generation, concept selection, detailed design and evaluation. The design work has consisted of Brain- and Pen Aided Design and in the work with the detailed design have the CAD software PTC Creo Parametric 3.0 been used. The final result is a design consisting of covers which effectively leads away machining chips from the fixture and at the same time covers the horizontal areas of the fixture where large quantities of machining chips accumulate during machining. A scale model test has been carried out and the result of this showed that the design contributes to remove metal chips in a more efficient way than the individual fixture itself.
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Metodjämförelse för fixturkonstruktion till prototyptillverkningAldegård, Alexander, Gapinski, William January 2018 (has links)
The thesis work is done in collaboration with Prodtex AB, which works to develop digital tools to facilitate the constructor´s work in virtual environments, for instance CAFD within CATIA V5. What the client wanted the project participants to perform was a comparison of the company's semi-automatic software for fixture design, and the traditional construction method with CATIA. The reason for the method comparison is because Prodtex AB requires data, which they can present to potential customers. The participants produced a method to enable the necessary components of the project, the method consisted of training in fixture design, fixture construction and work with the consulting company´s application. These elements have been essential for the comparison to be reliable. The main part of the assignment consisted of constructing units for the given fixture. The reason behind this is due to the necessity of a certain level of experience in fixture design, which is required to be able to assemble units with an accurate and efficient procedure. The method comparison generated data in terms of time in the measurement areas, input, design and export that the project participants analyzed and compiled in the result section. Based on the statistics, participants were able to find answers about which features the software made the most time savings of, and how abundant these were in relation to the traditional design method. A conclusion about when it was beneficial for a company to invest in the software was based on reasoning deduced from the outcome discussion.
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Utveckling av en fixtur genom Open InnovationAl-Delemi, Rend, Al Hakim, Hoda January 2021 (has links)
Introduction: The introduction aims to provide a background to the case company, what Open Innovation (OI) is and how the concept is used in producing companies that are large and SME, as well as a brief description of what a fixture can look like. Purpose and issues: The purpose and goal of this study is to develop a permanent fixture for milling machines that will cut different articles into different lengths to save time and money. Since the case company uses this study as an OI strategy, the purpose is also to investigate why producing companies use OI in the development of products and what risks it may entail.Based on the purpose of the study, two questions were formulated: RQ1: What are the main reasons that producing companies use OI in their product development process and what risks may occur using OI? RQ2: Can a generic product development process, if possible, be applied when developing a fixture for milling machines through OI? In such case, what steps are applicable in this study? Approach and method: A case study was performed at a company and data was collected through literature studies, observations, and semi- and unstructured interviews. The literature study was collected to link the collected theoretical data with the results and was taken from books and scientific articles. The product development process was performed by following the theoretical frame of reference. Results: The respondents use OI for external input to develop the technology and utilize external knowledge. The concept is used to make the innovation process progress. The respondents have experienced positive results from using OI, but it has also entailed certain risks. Students are often used as an OI strategy to carry out student thesis and projects at companies.A fixture was developed following a generic product development process and a 3D CAD model of the product solution was developed. The phases product planning, concept development, development at system level and detailed development were completed to develop a solution to the problem that the case company experienced. Conclusions: The conclusions that can be drawn in this study are that OI is recommended to be used in producing companies to continue to develop even though it may involve risks.A fixture was created based on the requirements and goal specifications that the case company had, with a solution to the problem that existed. The fixture that was developed can be manufactured economically and practically and can save the fall company time and money. Keywords: Open Innovation, Open Innovation risks, reasons for Open Innovation, SME Open Innovation, large companies Open Innovation, product development, concept development, product design, concept design, fixture design, product development process. / Introduktion: Introduktionen syftar till att ge en bakgrund till fallföretaget, vad Open Innovation (OI) är och hur konceptet används i producerande företag som är stora och SME, samt en kort beskrivning av hur en fixtur kan se ut. Syfte och frågeställningar: Syftet och målet med denna studie är att utveckla en permanent fixtur till fräsmaskiner som ska skära olika artiklar i olika längder för att spara tid och pengar. Eftersom fallföretaget använder denna studie som en OI-strategi är syftet även att undersöka varför producerande företag använder OI vid utvecklingsarbeten och vilka risker det kan medföra. Utifrån studiens syfte formulerades två frågeställningar: FF1: Vilka är de främsta orsakerna till att producerande företag använder OI i deras produktutvecklingsprocess och vilka risker kan förekomma genom användning av OI? FF2: Kan en generisk produktutvecklingsprocess om möjligt tillämpas vid framtagning av en fixtur till fräsmaskinergenom OI? Vilka steg är i sådana fall tillämpbara i denna studie? Ansats och metod: En fallstudie utfördes på ett företag och data samlades in genom litteraturstudier, observationer, samt semi-och ostrukturerade intervjuer. Litteraturstudien samlades in för att kunna koppla den insamlade teoretiska data med resultatet, och hämtades från böcker och vetenskapliga artiklar. Produktutvecklingsprocessen utfördes genom att följa den teoretiska referensramen. Resultat: Respondenterna använder OI för extern input för att utveckla tekniken och utnyttja extern kunskap. Konceptet används för att få innovationsprocessen att fortskrida. Respondenterna har upplevt positiva resultat av att använda OI, men det har även medfört vissa risker. Studenter används ofta som en OI-strategi för att utföra studentarbeten och projekt hos företag. En fixtur utvecklades genom att följa en generisk produktutvecklingsprocess och en 3D CAD-modell av produktlösningen utvecklades. Faserna produktplanering, konceptutveckling, utveckling på systemnivå och detaljutveckling fullföljdes för att ta fram en lösning till problemet som fallföretaget upplevde. Slutsatser: Slutsatserna som kan dras i denna studie äratt OI rekommenderas att användas i producerandeföretag för att fortsätta utvecklas även fast det kan medföra risker. En fixtur skapades utifrån de krav-och målspecifikationerna som fallföretaget hade, med en lösning till problemet som fanns. Fixturen som utvecklades kan tillverkas ekonomiskt och praktiskt och kan bespara fallföretaget tid och pengar.
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