Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Konstruktion av mekaniskt lyftdon
University West, Department of Engineering Science, Division of Mechanical Engineering and Natural Sciences.
2015 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Design of a lifting device (English)
Abstract [sv]

Denna rapport är resultatet av ett examensarbete och beskriver framtagningen av ett standardgripdon. Gripdonet ska gripa och släppa ett lyftobjekt, genom att endast lyfta och ställa ner objektet. Det ska vara helt mekaniskt och klara en last på 75 kg. Önskemålet var att tillverka gripdonet med laserskurna detaljer med lite efterbearbetning och att de ingående komponenterna inte skulle kosta mer än 800 kr.

Den framtagna lösningen baserades på studier av företagets tidigare gripdon samt studier av generella gripdon som kan hittas på internet. För att komma fram till den mest lämpade lösningen för företaget samlades alla idéer och länkades samman genom skisser av enkla koncept. Dessa koncept utvecklades på olika sätt, bland annat genom att ändra en tidigare lösning av saxgrip till att gripa med parallell rörelse istället för radiell. Ytterligare ett exempel var att ha högre utväxling så att gripdonets grepp ökade. Genom ett sållningsförfarande identifierades ett koncept för vidare utveckling. Detta koncept dimensionerades och det skapades en CAD modell för att senare även byggas som en prototyp.

För att veta om prototypen fyllde sin uppgift genomfördes lyfttest samt ett lastprov, där den lyfte dubbla vikten mot vad den var avsedd för. Lyftfunktionen fungerade, dock gjordes några ändringar på konstruktionen i syfte att förbättra den samt att sänka priset.

Slutsatsen av arbetet blir att de funktionella kraven uppfylldes och att gripdonet fungerar som avsett

Abstract [en]

This report is the result of a thesis work and describes the development of a standardized gripping device. The gripper had to lift and let go of the object only by lifting it up or place it down. It had to be completely mechanical and handle a load up to 75 kg. The requirement was to produce gripper device with laser cut parts with as small manufacturing time as possible and that the components would not cost more than 800 kr.

At first various types of grippers were studied at the company and later on the studies continued on the Internet. At the same time simple sketches were made on different concepts. Some of the sketches were made as models in CAD. A concept was chosen and further developed. One of the improvements was that the gripping arms was given parallel movement instead of radial and with a stronger gear compared with a regular scissors gripping device. The correct dimensions for the components were calculated and a final CAD model was created. Out of model the drawings were made and a prototype was manufactured.

The prototype was assembled and tested and the gripper lifted the object as it should. The locking mechanism opened and closed as it should. The gripper was tested to meet two times the safety with no plastic deformation. A load test was made where the prototype managed to take a load over 150 kg which is approved. After that the prototype was tested, there were a few changes to improve the function and to reduce the price. The cost of the components was 920 SEK but compared to the company's other lifting devices it was not very expensive.

The conclusion of the work was that the functional requirements were met and that the gripper works.

Place, publisher, year, edition, pages
2015. , 37 p.
Keyword [en]
gripper, ideas, concept development, prototype, results, conclusion.
Keyword [sv]
gripdon, idégenerering, konceptframtagning, prototyp, resultat, slutsats
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:hv:diva-7483Local ID: EXC580OAI: oai:DiVA.org:hv-7483DiVA: diva2:798287
Subject / course
Mechanical engineering
Educational program
Maskiningenjör
Supervisors
Examiners
Available from: 2015-04-21 Created: 2015-03-26 Last updated: 2015-04-21Bibliographically approved

Open Access in DiVA

No full text

By organisation
Division of Mechanical Engineering and Natural Sciences
Mechanical Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 120 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf