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Citation link: https://doi.org/10.26092/elib/2427

Publisher DOI: https://doi.org/10.1016/j.cirpj.2020.06.005
CIRPJ-D-20-00177_R1_Deckblatt_pdfa1.pdf
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Influence of gear hobbing feed marks on the resulting gear quality after discontinuous profile grinding


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Authors: Guba, Nikolai 
Hüsemann, Tobias 
Karpuschewski, Bernhard  
Abstract: 
Gear hobbing is one of the most common soft-machining processes for pre-toothing. The process kinematics result in a characteristic tooth-flank topography, which is mainly determined by so-called feed marks. For an economical finishing process by gear grinding in automotive applications, the feed-mark depths should not exceed a maximum value of 35 mm. In the present study the validity of this limit has been investigated in view of the development of increasingly powerful grinding machines and grinding wheels. For this purpose, gears with feed-mark depths dx below and above 35 mm were machined and ground by means of discontinuous profile gear grinding afterwards. The influence of the feed marks on the grinding process with roughing parameters was systematically evaluated on the basis of various process variables such as the increase in spindle power Ps or the degree of grinding-wheel clogging Zs, while the resulting gear quality was mainly analyzed by various parameters to describe macro- and micro-geometry deviations of the ground tooth flanks. With increasing feed-mark depth, an increase in spindle power was found due to the additional machined volume. An influence of increasing feed-mark depths on the clogging degree, the grinding-wheel wear and the gear quality could not be proven. Therefore, economical finishing of gears by gear grinding is also possible with feed-mark depths of more than 35 mm. A new definition of this limit should be sought.
Keywords: Gear hobbing; Feed marks; Gear grinding; Geometric gear quality
Issue Date: 18-Dec-2020
Publisher: Elsevier
Journal/Edited collection: CIRP Journal of Manufacturing Science and Technology 
Start page: 314
End page: 321
Volume: 31
Type: Artikel/Aufsatz
ISSN: 1755-5817
Secondary publication: yes
Document version: Preprint
DOI: 10.26092/elib/2427
URN: urn:nbn:de:gbv:46-elib71067
Institution: Universität Bremen 
Faculty: Zentrale Wissenschaftliche Einrichtungen und Kooperationen 
Institute: Institut für Werkstofftechnik (IWT) 
MAPEX Center for Materials and Processes 
Appears in Collections:Forschungsdokumente

  

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