Operating performance of external non-involute spur and helical gears : a review
ID Okorn, Ivan (Author), ID Nagode, Marko (Author), ID Klemenc, Jernej (Author)

URLURL - Source URL, Visit https://www.sv-jme.eu/sl/article/operating-performance-of-non-involute-spur-and-helical-gears-a-review/ This link opens in a new window
- Presentation file, Download (1,54 MB)
MD5: 737945661AF694EAF3DF0F7C1F4007AD

In practical use, most gears have an involute shape of tooth flanks. However, external involute gears have some drawbacks, such as unfavourable kinematic conditions at the beginning and end of meshing, a limited minimum number of teeth, and the highly loaded convex-convex (i.e., non-conformal) contact. Researchers have developed and analysed various non-involute forms of tooth flanks, but they have not been widely accepted. The main reasons are higher manufacturing costs and sensitivity to manufacturing and assembly errors. Analyses of non-involute forms of teeth are mostly theoretical (analytical and numerical), while there is a lack of experimental confirmations of theoretical assumptions. This paper reviews external non-involute shapes, their operating characteristics and possibilities of use compared to involute gears. Established criteria, such as Hertzian pressure, oil film thickness, bending stress at the root of the tooth, contact temperature, and gear noise, were used for assessment. The results of analytical studies and experimental research on S-gears are presented in more detail. S-gears have a higher surface durability and a lower heat load when compared to involute gears. The usability of non-involute gears is increasing with the development of new technologies and materials. However, the advantages of non-involute shapes are not so significant that they could easily displace involute gears, which are cheaper to manufacture.

Keywords:non-involute gears, tooth profile, path of contact, Novikov gears, S-gears, gearing load capacity
Work type:Article
Typology:1.02 - Review Article
Organization:FS - Faculty of Mechanical Engineering
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:Str. 256-271
Numbering:Vol. 67, no. 5
PID:20.500.12556/RUL-127401 This link opens in a new window
ISSN on article:0039-2480
DOI:10.5545/sv-jme.2020.7094 This link opens in a new window
COBISS.SI-ID:65853443 This link opens in a new window
Publication date in RUL:04.06.2021
Copy citation
AddThis uses cookies that require your consent. Edit consent...

Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Title:Obratovalne lastnosti zunanjih neevolventnih valjastih zobnikov z ravnimi in poševnimi zobmi: pregled
Keywords:neevolventni zobniki, profil boka zoba, ubirnica, S-zobniki, cikloidno ozobje, Novikov ozobje, nosilnost ozobja


Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Project number:P2-0182
Name:Razvojna vrednotenja

Similar documents

Similar works from RUL:
Similar works from other Slovenian collections: