Reducing scrapping of gears by assessment of tip contact threshold torque
Hjelm, Rikard LU ; Ahadi, Aylin LU and Wahlström, Jens LU
(2022)
In Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
236(8).
p.1613-1622
- Abstract
While striving for more competitive products as well as reaching the Global Sustainable Development Goals, automotive powertrain manufacturers increase the demands on gears, which translates to decreased manufacturing error tolerances. Too tight tolerances may, however, counteract the goal if it leads to increased material and energy consumption due to unjustified scrapping. This paper presents a method to prevent unjustified scrapping by comparing the severity of different manufacturing error tolerances by means of the tip contact threshold torque. Curve fits are shown to be accurate and helpful to assess the outcome of a produced batch of gears. A case study is made where the method is used with measured data from the industry. It can... (More)
While striving for more competitive products as well as reaching the Global Sustainable Development Goals, automotive powertrain manufacturers increase the demands on gears, which translates to decreased manufacturing error tolerances. Too tight tolerances may, however, counteract the goal if it leads to increased material and energy consumption due to unjustified scrapping. This paper presents a method to prevent unjustified scrapping by comparing the severity of different manufacturing error tolerances by means of the tip contact threshold torque. Curve fits are shown to be accurate and helpful to assess the outcome of a produced batch of gears. A case study is made where the method is used with measured data from the industry. It can be concluded from the investigation that considerable amounts of scrapping can be avoided by consideration of the threshold torque.
(Less)
- author
- Hjelm, Rikard
LU
; Ahadi, Aylin
LU
and Wahlström, Jens
LU
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- LTCA, pitch error, profile slope error, Scrapping, threshold torque, tip contact, tolerance
- in
- Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
- volume
- 236
- issue
- 8
- pages
- 1613 - 1622
- publisher
- Professional Engineering Publishing
- external identifiers
-
- scopus:85122145745
- ISSN
- 1350-6501
- DOI
- 10.1177/13506501211066298
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © IMechE 2021.
- id
- b775f550-9283-47f4-ac77-79e2f8500201
- date added to LUP
- 2022-01-14 09:42:44
- date last changed
- 2023-11-09 03:07:55
@article{b775f550-9283-47f4-ac77-79e2f8500201,
abstract = {{<p>While striving for more competitive products as well as reaching the Global Sustainable Development Goals, automotive powertrain manufacturers increase the demands on gears, which translates to decreased manufacturing error tolerances. Too tight tolerances may, however, counteract the goal if it leads to increased material and energy consumption due to unjustified scrapping. This paper presents a method to prevent unjustified scrapping by comparing the severity of different manufacturing error tolerances by means of the tip contact threshold torque. Curve fits are shown to be accurate and helpful to assess the outcome of a produced batch of gears. A case study is made where the method is used with measured data from the industry. It can be concluded from the investigation that considerable amounts of scrapping can be avoided by consideration of the threshold torque.</p>}},
author = {{Hjelm, Rikard and Ahadi, Aylin and Wahlström, Jens}},
issn = {{1350-6501}},
keywords = {{LTCA; pitch error; profile slope error; Scrapping; threshold torque; tip contact; tolerance}},
language = {{eng}},
number = {{8}},
pages = {{1613--1622}},
publisher = {{Professional Engineering Publishing}},
series = {{Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology}},
title = {{Reducing scrapping of gears by assessment of tip contact threshold torque}},
url = {{http://dx.doi.org/10.1177/13506501211066298}},
doi = {{10.1177/13506501211066298}},
volume = {{236}},
year = {{2022}},
}