Influence of gear hobbing feed marks on the resulting gear quality after discontinuous profile grinding
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||Band:||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|
checked on Dec 9, 2023
checked on Dec 9, 2023
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