<p>This report deals with an exam report written by Olle Hjalmarsson and Thomas Likar, students at Högskolan i Halmstad. </p><p>The project was carried out for Haldex Traction AB in Landskrona whose business consist of manufacturing automatic all wheel drive systems (AWD-system). These systems consist of a plate clutch which activates all four wheels of a 4-wheel driven vehicle. An important component in these clutches is the accumulator which basically consists of a piston under the load of a spring which creates an oil pressure with the help of an electric motor used for actuating the clutch.</p><p>At Haldex difficulties has been experienced regarding the assembly of the accumulator parts due to the small tolerances between the piston and the hole of the accumulator in the cast aluminium housing. Attempts have been made to assemble the parts in existing robot cells. The precision was however not sufficient and the pistons have sometimes ripped of pieces of the housing containing the accumulator, damages which in turn have caused leakage in the accumulator valves.</p><p>Before the project was started a machine was manufactured for the assembly of the accumulator. This solution resulted in a hand operated machine which in an ergonomically point of view proved to be unsuitable. There was a need for a new machine or even a new method of assembling. </p><p>The project followed a dynamic product development process which was initiated with an analysis of existing equipment at the plant in Landskrona. Seven different concepts were presented to the company and one was chosen for further development.</p><p>The project resulted in a design of a semi automatic machine controlled by different types of pneumatic cylinders. The final design of the machine still contained some manual steps but the ones that were likely to result in injury were eliminated.</p><p>The report that was finished in December 2006 contains lists of details of chosen components and drawings of all components that need to be manufactured.</p>

No description available.

No description available.

Rotab Rostfria Transportörer AB tillverkar och utvecklar material- och godshanteringsutrustning. Företaget levererar även kompletta materialhanteringslösningar i form av godshanteringsanläggningar som ofta består av transportband och paketeringsutrustning. Examensarbetets mål är att utveckla en vertikaltransportör som ska transportera gods mellan två transportband belägna på olika höjder, transporten ska kunna varieras mellan 1000 - 3000 mm. Transportören ska undvika de två stora nackdelarna som återfinns hos konkurrerande produkter, att de är utrymmeskrävande eller att de använder sig av synkroniserade kedjor. Vertikaltransportören baseras på en konceptidé som tagits fram på företaget. Denna konceptidé utvecklas till en prototyp med hjälp av metoder för produktutveckling. Produktutvecklingsprocessen delas upp i olika faser som inleds med en problemdefinierande fas. Därefter definieras produktens önskade funktioner, detta används till att utveckla ett flertal koncept. Ett av koncepten väljs ut för vidareutveckling. Utifrån det valda konceptet konstrueras en prototyp som används för underlag till en utvärdering. Vid examensarbetets slut har en digital prototyp konstruerats i CAD-programmet (Computer Aided Design) SpaceClaim. Konstruktionen är dimensionerad för att hantera gods med dimensionerna ( längd x bredd x höjd) 400x400x300 mm samt en godsvikt upp till 20 kg. Den drivs av en elektrisk kuggväxelmotor med 0,55 kW:s effekt. Den lägsta möjliga hämthöjden är 800 mm över golvet. Prototypens högsta avlämningshöjd är 3490 mm över golvet, detta kan dock ökas vid behov. Prototypen klarar av 39,5 transporter i minuten. Prototypen är ett bra val för vertikala transporter av gods i den storleksordning som den är dimensionerad för att hantera. Dock är den sämre på att hantera gods i mindre storleksordning. Prototypen bör tillämpas då godset behöver förflyttas vertikalt och endast ta en kort horisontell sträcka i anspråk. I de fall där, den långa horisontella sträcka som krävs av, en vinkeltransportör ryms bör istället en sådan tillämpas. Då vinkeltransportören har en högre transportkapacitet, simplare konstruktion och lägre kostnad. / Rotab Rostfria Transportörer AB manufactures and develops equipment for handling of materials and goods. The company also provides complete solutions for the handling of materials and goods, these solutions often consist of conveyors and equipment for packaging. The goal of the thesis is to design a vertical conveyor which is intended to transport goods from one conveyor to second conveyor located at another elevation. The vertical transportation must be variable between 1000 and 3000 mm above the floor. The conveyor must avoid the two major disadvantages that are common amongst competing products, these are often space consuming and/or use synchronized chains. The vertical conveyor is based on a conceptual idea developed at the company. In the thesis work, the idea is developed into a prototype with the aid of product development methodology. The product development process is divided into several phases, starting with a problem defining phase. After the first phase the required features are defined, the features are used as support for the development of several concepts. One of the concepts is chosen for further development. The chosen concept is the base for the design of the prototype. The finished prototype is evaluated. At the end of the thesis work a digital prototype has been designed using the CAD (Computer Aided Design) software SpaceClaim. The prototype is designed to handle goods with the following dimensions ( length x width x height) 400x400x300 mm and also with a mass up to 20 kg. It is powered by an electrical gear motor with a power output of 0.55 kW. The lowest possible pickup height is 800 mm above the floor level. The highest unloading height for the prototype is 3490 mm above floor level; it is possible to increase the unloading height in order to achieve 3000 mm. The rate of transports is 39.5 transports every minute. The prototype is a good choice for vertical transportation of goods in the same dimensions as described above. It is not as well suited for transportation of smaller goods. The prototype should be used when the vertical transportation is required to be achieved in a short horizontal distance. If the available horizontal space is sufficient for an angled conveyor to be used, a conveyor of that type should be used instead. Since an angled conveyor has higher capacity for transportation, an simpler design and is cheaper than the prototype.

This report deals with an exam report written by Olle Hjalmarsson and Thomas Likar, students at Högskolan i Halmstad. The project was carried out for Haldex Traction AB in Landskrona whose business consist of manufacturing automatic all wheel drive systems (AWD-system). These systems consist of a plate clutch which activates all four wheels of a 4-wheel driven vehicle. An important component in these clutches is the accumulator which basically consists of a piston under the load of a spring which creates an oil pressure with the help of an electric motor used for actuating the clutch. At Haldex difficulties has been experienced regarding the assembly of the accumulator parts due to the small tolerances between the piston and the hole of the accumulator in the cast aluminium housing. Attempts have been made to assemble the parts in existing robot cells. The precision was however not sufficient and the pistons have sometimes ripped of pieces of the housing containing the accumulator, damages which in turn have caused leakage in the accumulator valves. Before the project was started a machine was manufactured for the assembly of the accumulator. This solution resulted in a hand operated machine which in an ergonomically point of view proved to be unsuitable. There was a need for a new machine or even a new method of assembling. The project followed a dynamic product development process which was initiated with an analysis of existing equipment at the plant in Landskrona. Seven different concepts were presented to the company and one was chosen for further development. The project resulted in a design of a semi automatic machine controlled by different types of pneumatic cylinders. The final design of the machine still contained some manual steps but the ones that were likely to result in injury were eliminated. The report that was finished in December 2006 contains lists of details of chosen components and drawings of all components that need to be manufactured.

Diss. (sammanfattning) Luleå : Univ., 2001. / Härtill 6 uppsatser.

No description available.

No description available.

Vi lever i en dynamisk värld med snabba förändringar och ett tydligt exempel är fordonsindustrin som ständigt strävar efter ökad fordonssäkerhet. Av den orsaken att vi som förare förlitar oss allt mer på den uttalade fordons­säkerheten färdas vi per automatik allt snabbare och tar större risker. Hög hastighet i kombination med tyngre fordon, avancerade ramkonstruktioner samt användning av högteknologiska material leder till allvarliga trafikolyckor med komplicerade och tekniskt svåra räddningsinsatser som följd. Koncist stärker dagens fordonsutveckling behovet av allt starkare och kraft-fullare räddningsverktyg. Vilket i sin tur innebär en större arbetsbelastning på räddningspersonal i form av större och tyngre verktyg. Med ovanstående faktorer i åtanke behandlar följande arbete vidareutvecklingen av ett hydrauliskt räddningsverktyg, med användare och olycksoffer i fokus, för företaget NIKE Hydraulics AB i Eskilstuna. / We live in a dynamic world with rapid changes. A good example is the car manufacturers who are constantly striving to increase safety features in their future car models. The enhanced safety features makes us more inclined to drive fast and risky. High speed in combination with heavy vehicle, use of strong material and advanced technology in the car structure leads to severe accidents with the outcome of an extremely complicated rescue operation. A concise fact is that the modern car technology strengthens the demand of stronger and more powerful hydraulic rescue tools. This burdens the rescue task force due to larger and heavier tools. The following thesis considers the redesign of an existing double-acting hydraulic combination tool intended for rescue task forces with the intention to focus on user perspectives and persons involved in car accidents.

<p>Vi lever i en dynamisk värld med snabba förändringar och ett tydligt exempel är fordonsindustrin som ständigt strävar efter ökad fordonssäkerhet. Av den orsaken att vi som förare förlitar oss allt mer på den uttalade fordons­säkerheten färdas vi per automatik allt snabbare och tar större risker.</p><p>Hög hastighet i kombination med tyngre fordon, avancerade ramkonstruktioner samt användning av högteknologiska material leder till allvarliga trafikolyckor med komplicerade och tekniskt svåra räddningsinsatser som följd.</p><p>Koncist stärker dagens fordonsutveckling behovet av allt starkare och kraft-fullare räddningsverktyg. Vilket i sin tur innebär en större arbetsbelastning på räddningspersonal i form av större och tyngre verktyg.</p><p>Med ovanstående faktorer i åtanke behandlar följande arbete vidareutvecklingen av ett hydrauliskt räddningsverktyg, med användare och olycksoffer i fokus, för företaget NIKE Hydraulics AB i Eskilstuna.</p> / <p>We live in a dynamic world with rapid changes. A good example is the car manufacturers who are constantly striving to increase safety features in their future car models. The enhanced safety features makes us more inclined to drive fast and risky. High speed in combination with heavy vehicle, use of strong material and advanced technology in the car structure leads to severe accidents with the outcome of an extremely complicated rescue operation.</p><p>A concise fact is that the modern car technology strengthens the demand of stronger and more powerful hydraulic rescue tools. This burdens the rescue task force due to larger and heavier tools.</p><p>The following thesis considers the redesign of an existing double-acting hydraulic combination tool intended for rescue task forces with the intention to focus on user perspectives and persons involved in car accidents.</p>