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Advanced process limits by rolling of helical gears

: Neugebauer, Reimund; Hellfritzsch, U.; Lahl, M.

Postprint urn:nbn:de:0011-n-723830 (400 KByte PDF)
MD5 Fingerprint: d17caf407225b3e25e8deaa0fe268e26
Created on: 31.3.2011

Institut National des Sciences Appliquees, Lyon:
11th ESAFORM Conference on Material Forming 2008 : Proceedings Mini Symposia. Lyon, France, 23, 24 and 25 april 2008
Berlin: Springer, 2008 (International Journal of Material Forming 1.2008, Supplement 1)
ISSN: 1960-6206
Conference on Material Forming <11, 2008, Lyon>
Conference Paper, Journal Article, Electronic Publication
Fraunhofer IWU ()
forming; rolling; gear; rolling tool; pitch accuracy

A new developed method describes the gear-rolling-process and an alternative pitch design of forming tools. A model was created to analyze rolling processes which determined that in contrast to flat rolling tools, round tools for helical gears need additional kinematic compensation during diameter-related variable pitch forming processes. The new method shows up to a 50% improvement in pitch accuracy and the ability to roll high teeth gears (up to 10 mm in height and a tooth-height-coefficient larger than 2,7). The Fraunhofer Institute IWU has carried out research for many years to provide insight in generating high gearing typical of transmissions with rolling techniques and surpassing the limits of forming feasibility.