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Utveckling av verktyg för montering av fjäderbefästningar på järnvägsväxlar

Forne Admarker, Gustav LU (2025) MMKM10 20241
Innovation
Abstract
This master thesis work was carried out on behalf of and in collaboration with Vossloh Nordic Switch Systems AB with the aim of developing a pressing tool for the assembly of spring fasteners (so-called Pandrol e-clips) used in the installation of railway switches. The tool primarily used today has not been able to be used for the entire product portfolio of switches due to the tool’s size, which does not allow access during the installation of narrow switches.

The work has been based on the process with associated methods developed by Ulrich and Eppinger for product development. Customer needs have been investigated through interviews and observations resulting in several concepts. After concept selection and further studies, one... (More)
This master thesis work was carried out on behalf of and in collaboration with Vossloh Nordic Switch Systems AB with the aim of developing a pressing tool for the assembly of spring fasteners (so-called Pandrol e-clips) used in the installation of railway switches. The tool primarily used today has not been able to be used for the entire product portfolio of switches due to the tool’s size, which does not allow access during the installation of narrow switches.

The work has been based on the process with associated methods developed by Ulrich and Eppinger for product development. Customer needs have been investigated through interviews and observations resulting in several concepts. After concept selection and further studies, one concept has been chosen and detailed designed. Digital prototypes (CAD) as well as simpler physical prototypes have been helpful in the work and decision-making. Finally, FEM-analysis have been carried out to guarantee the tool’s functionality and mechanical properties.

The work resulted in a design solution similar to todays, with some changes that allow the concept to meet the goal specifications and facilitate the task of the assemblers. Additionally, it offers better ergonomics and built-in safety features to prevent personal injuries. In conclusion, Vossloh is excited about the potential and will have a complete working prototype built to test on the assembly line. (Less)
Abstract (Swedish)
Detta examensarbete utfört på uppdrag av och i samarbete med Vossloh Nordic Switch Systems AB i syfte att ta fram ett pressverktyg för montering av fjäderbefästningar (s.k. pandrolfjädrar) vilka används vid installation av järnvägsväxlar. Det verktyg som huvudsakligen används idag har inte kunnat brukas till hela produktportfolion av växlar på grund av verktygets storlek som inte tillåter åtkomst vid installation av smala växlar.

Arbetet har baserats på den process med tillhörande metoder framtagen av Ulrich och Eppinger för produktutveckling. Kundbehov har undersökts genom intervjuer och observationer vilka har mynnat ut i ett antal koncept. Efter koncepturval och fortsatta studier har ett koncept valts och designats i detalj. Digitala... (More)
Detta examensarbete utfört på uppdrag av och i samarbete med Vossloh Nordic Switch Systems AB i syfte att ta fram ett pressverktyg för montering av fjäderbefästningar (s.k. pandrolfjädrar) vilka används vid installation av järnvägsväxlar. Det verktyg som huvudsakligen används idag har inte kunnat brukas till hela produktportfolion av växlar på grund av verktygets storlek som inte tillåter åtkomst vid installation av smala växlar.

Arbetet har baserats på den process med tillhörande metoder framtagen av Ulrich och Eppinger för produktutveckling. Kundbehov har undersökts genom intervjuer och observationer vilka har mynnat ut i ett antal koncept. Efter koncepturval och fortsatta studier har ett koncept valts och designats i detalj. Digitala prototyper (CAD) samt enklare fysiska prototyper har varit till hjälp i arbetet och beslutsfattandet. Slutligen har även FEM-analyser genomförts för att garantera verktygets funktion och hållfasthet.

Arbetet resulterade i en designlösning likt dagens, med vissa förändringar som gör att konceptet uppfyller ställda målspecifikationer och underlättar montörernas uppgift. Dessutom erbjuder det bättre ergonomi och inbyggda säkerhetsfunktioner för att personskador. Som slutsats ser Vossloh potential i konceptet och kommer låta bygga ett fullständigt fungerande prototyp för test på monteringslinan. (Less)
Please use this url to cite or link to this publication:
author
Forne Admarker, Gustav LU
supervisor
organization
alternative title
Development of an Installation Tool for Clip Fasteners on Railroad Switches
course
MMKM10 20241
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Produktutveckling, järnvägsväxlar, monteringsverktyg, Ulrich & Eppinger, fjäderbefästning (e-clip)
language
Swedish
id
9215966
date added to LUP
2025-12-10 13:51:40
date last changed
2025-12-10 13:51:40
@misc{9215966,
  abstract     = {{This master thesis work was carried out on behalf of and in collaboration with Vossloh Nordic Switch Systems AB with the aim of developing a pressing tool for the assembly of spring fasteners (so-called Pandrol e-clips) used in the installation of railway switches. The tool primarily used today has not been able to be used for the entire product portfolio of switches due to the tool’s size, which does not allow access during the installation of narrow switches.

The work has been based on the process with associated methods developed by Ulrich and Eppinger for product development. Customer needs have been investigated through interviews and observations resulting in several concepts. After concept selection and further studies, one concept has been chosen and detailed designed. Digital prototypes (CAD) as well as simpler physical prototypes have been helpful in the work and decision-making. Finally, FEM-analysis have been carried out to guarantee the tool’s functionality and mechanical properties.

The work resulted in a design solution similar to todays, with some changes that allow the concept to meet the goal specifications and facilitate the task of the assemblers. Additionally, it offers better ergonomics and built-in safety features to prevent personal injuries. In conclusion, Vossloh is excited about the potential and will have a complete working prototype built to test on the assembly line.}},
  author       = {{Forne Admarker, Gustav}},
  language     = {{swe}},
  note         = {{Student Paper}},
  title        = {{Utveckling av verktyg för montering av fjäderbefästningar på järnvägsväxlar}},
  year         = {{2025}},
}