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563 Uppsatser om Agile manufacturing - Sida 25 av 38

Utveckling av högspänningskontakt

This report describes the development of a high-voltage connector at the request of Scandinova Systems AB in Uppsala. The development process is described from the making of a customer demand specification, to the making of drawings for the manufacturing of prototypes. Scandinova develops high-voltage modulators, hence the need for connectors that can handle very large power pulses. Their current connector has several weaknesses that may cause the connector to melt or catch fire. The development began with a number of studies that included the modulator structure and the current connector structure and functions.

Användning av nyckeltal, Key performance indicators, som underlag till resurseffektivisering av produktion

Mattias MogardGustav von HeijneSammanfattningFör framgångsrika företag är det essentiellt att ha kontroll över sina resurser. Studien tar upp ett ämne som handlar om att skapa en överblick och en medvetenhet om resurseffektivitet inom ett företags produktion.Performance measurement är ett tillvägagångssätt för att kvantifiera aktiviteterna inom en produktion. Data struktureras genom nyckeltal, Key performance indicators (KPI:er), till övergriplig och användbar information. ISO 22400 är en uppsättning standardiserade nyckeltal med ändamålet att appliceras på automatiserad produktion. Studiens syfte är hitta vilka av nyckeltalen från ISO 22400 som är lämpliga att använda vid mätningen av en helt automatiserad produktionskedja som tillverkar motorblock.

Kvalitetssäkring för Scaniasmotorkomponenter : Jämförelse med andra företag

Quality assurance for Scania engine componentsScania engines have become one of the world?s most renowned corporations in themanufacturing of engines. This is mostly due to the quality and performance thatScania have shown. However, this does not stop Scania from trying to achieve moresuccess in the fields of development and research to assure the quality of theirengines.The purpose of this thesis is to show how Scania ensures the quality of the enginecomponents, both those who made externally and internally at Scania, also inclusivethe manufacturing and assembly process.Three engine components were examined: D16 block engines, water pump andXP-Iinjectors. The study included the whole process from the step of supplying therow materials to the last step in production functional test.In this thesis an investigation of how other companies are working with qualityassurance was conducted.

USA: s militära intervention i Irak : En studie av hur Bushadministrationens agerande överensstämmer med FN stadgan

AbstractUniversity of Växjö, School of Social SciencesCourse: POC 536, Political Science 41-60Title: The U.S. military intervention in Iraq ? A study of how the intervention corresponds with the UN CharterAuthors: Andreas Malmgren & Johan SchneiderSupervisor: Lennart BergfeldtDate: 2006-09-26The aim of this essay is through a qualitative literature study examine the main arguments of the Bush administration to justify a military intervention in Iraq. The theories used to explain the actions of the U.S. are system level analysis, hegemonism and realism while the UN Charter will be applied as a normative theory.

Konstruktion av anordning för att undersöka förslitning av syrebärarpartiklar för kemcyklisk förbränning

The purpose of this work is to design and construct a device able to measure the mechanical attrition of oxygen carrier particles. Those particles are used in chemical looping combustion and in the present situation there is a lack of knowledge in how the attrition process work and in which extension. To find already tested solutions trying to answering this problem a literature study wascarried out and the best solution found was the so called Grace-Davison Jet-Cup method. This method is supposed to emulate the attrition caused by a cyclone separator and its advantages are that it is possible to use small test amounts, 5-10 g, and a thirty minutes long test will be enough to acquire useable results. An device was designed based on the Jet-Cup method with some slight modifications.

Standardisering av bakpanel.

HAFA Bathroom Group has given us the assignment to develop a standardized back panel for their bathroom cabinets. This cabinet is going to be applied to most of their current and future cabinet solutions. To this point, they have constructed unique suspensions-and back panels for most of their cabinet models. They have also been forced to pull wiring and assemble the cabinets differently because of factors like; position of the wall sockets, dimensions of the cabinets and their shapes.The company wants to distance themselves from their current solution, firstly because the cost of having manpower to design each individual suspension solution, secondly because they will save a lot of money when the manufacturing process requires a minimum of components to be constructed. As a result of this, the company can use their resources better to develop future products.The main idea is that the consumer isn?t required to change the suspension or back panel when they decide to buy a new cabinet.

TV-stativ med nytt ställdon

The purpose of this thesis work is to evaluate how the physical behaviour of a pipe bend is affected by the pipe bending procedure. Effects such as initial ovalization, thinning, thickening and plastic hardening from the bending procedure are examined and the mechanical properties of pipe bends containing these effects are investigated.This has been evaluated by creating a detailed Finite Element model of a pipe that is being bent. Then the differences compared to a bent tube in a virgin state, so called Elbow elements and an analytical in-house program have been evaluated. The virgin state refers to a model of a pipe that is bent from the beginning, thus having a homogeneous thickness and not containing any plastic hardening. The Elbow element is a calculationally cheap element, specially developed for accurate calculations of pipe bends in an initially virgin state.The goal with the thesis work is to get a better picture of what happens to a pipe as it is being bent, how this affects the mechanical properties and to evaluate the possibility to develop an easy method for taking these effects into account when using the Elbow element.This report describes the layout of the work and how the detailed FE-model has been constructed.

Additiv tillverkning för serieproduktion : Under vilka förutsättningar lämpar det sig?

Additiv tillverkning, eller ?additive manufacturing? (AM) är den ISO-standardiserade termen på tillverkningsmetoder som bygger detaljer genom att lagervis addera material. Det är en teknik som främst har använts till prototyptillverkning och fortfarande gör men som mer och mer börjar få fäste som tillverkningsmetod för slutanvändningsprodukter. Syftet med denna rapport är att undersöka under vilka förutsättningar AM lämpar sig som tillverkningsmetod för detaljer av plast. Förutsättningarna delas in i ett ekonomiskt, tekniskt och kunskapsmässigt perspektiv.

Produktivitetsstudie Brobyggnad

The development of productivity in the construction industry has long been at a steady state compared to the manufacturing industry. Studies have shown that, amongst other things, waste on construction sites can reach up to one third of the total production cost. This has been observed from different aspects, and change is forthcoming.This thesis aims to provide a foundation for an increased productivity at production sites of building bridges. It is primarily based on a field study at Skanska, at a bridge construction site near Grängesberg. Via continuous interviews with the whole production crew, construction workers and management, information on interference and possibilities of improvement at the work site has been documented.

Activity-based management : En begreppsprecisering

Background: In the eighties the debate concerning the declining relevance of the traditional calculation started. The reason was that the method of calculating not had been changed despite that the costs and manufacturing had changed in many companies. This led to the development of activity-based costing. Management by means of activity information is called activity-based management, but there is no general accepted definition of what the term com- prises. Neither are there any studies which describe within which areas activity information is used as a base for decisions.

Energisparläge i automationsindustrin : Potential för att minska tomgångsförluster med industriella styrsystem

Former studies have shown that a considerable part of industries? energy usage can stem from idle times in the production. This thesis, carried out at Siemens Industry sector, evaluates the potential for using the control system to automatically put machines into energy saving mode during idle times. The main part of the thesis consists of a case study performed on machine tools at a Scania production site in Södertälje. Through load measurements the potential for energy savings was determined.The results show that there is a great potential for energy savings during idle times at the site.

Optimering av påstorkning : Från behov till färdig konstruktion

This thesis describes the redesign ofequipment designed for drying bags thatis used in Fresenius Kabis´manufacturing of their nutritionmedicine in Uppsala. The need of thistask arise during the start of thedevelopment of a new packaging line werethis equipment were meant to be used. Anevaluation of the bagdryers capacity andcapability was necessary.The work started with gathering ofinformation from suppliers of the usedcomponents and from the responsibleengineers for this equipment. Aneducation to learn how the equipmentworked and how to operate it were taken.That was followed by the creation of astudy plan were the tests were plannedto test different parameters effect onthe drying result and to see if thebagdryer managed to handle the bags ofthe correct format in the pace that theequipment should be designed for.The test results detected a need ofdesigning a unit with a function thatholds the bags in place while passingthrough the dryer in order to attainhigh quality results. The results werelater used for optimization of thedesign.

Skiftarbetares självskattade hälsa : Anledning till skiftarbete och kontroll i arbetet

ABSTRACTBackground:To work irregular hours, so called shift work, involves a greater risk to develop bad health compared to work daytime. The society today requires availability 24-hours per day which makes shiftwork necessary. We have to find a way to make shift working people remain at a good health.Purpose:The purpose of this study was to examine the self estimated health of shift workers. This study concerns significant differences between self estimated health and: main reason for shiftwork, possibility to decide what to do at work and possibility to decide how to perform work tasks.Method:A cross sectional study was performed in four companies in industrial manufacturing, printing business and service business in the community of Örebro. 113 questionnaires were delivered and 71 persons filled the questionnaires and returned them, the reply fervency were 65 %.Results:In this population almost 80 % of the participants declared their health good, very good or excellent and no one declared their health as poor.

HemoCue Cognatus - Ett Intelligent Analysinstrument

HemoCue AB is a multinational corporation targeted on manufacturing point-of-care analysisinstruments for medical treatment. Their main product, the DM 201, is outdated and has bigissues gaining new market shares. For example, no medical treatment center in Sweden usesDM 201 frequently. The project of developing a new instrument to replace it was assignedtwo students at the development engineering program at Halmstad University. The projectalso included integration of the new platform for DM 202 to HemoCue AB:s remainingproducts.The project began by defining the different technical areas concerned.

Analys av faktorer som påverkar interna leveransledtider : Dimensionering av lager

It is becoming increasingly important for companies to meet customer demands due to intense competition in today's global market, that forcing companies to improve their offerings and become better at managing their supply chain (Shen et al., 2006).  Long lead times can be reduced by using different methods and strategies shows various researches. Lead times occur in the planning, production, inventories and handling of products (Treville et al., 2003).The aim of the study is to develop a method to analyze the factors that affect the length of internal delivery lead time in manufacturing companies. The method also included suggestions for reducing delivery lead-time to internal customers.The main factors that influenced the length of the on delivery lead times has summarized to make a selection among the factors that can have the most significant impact. The selected elements will be used as a method to analyze how these areas affect a company?s length on internal delivery lead times.The study shows that the causes of the long delivery lead times was the location of the customer order point, uncertain forecasts, long material and production planning time, and long waits in the production and storage.The delivery lead time, according to this report?s suggested improvements reduced by centralizing CODP and makes more reliable forecasts.

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