Investigations on Cold Die Forging of a Gear Utilizing Divided Flow. I. (Examination of Applicable Condition for a Spur Gear)

An investigation to obtain the basic data for applying a newly proposed process, utilizing a divided flow to actual gear-toothed machine parts, is described. In the first report, a two step forging method is used for the working of a spur gear and the possibility of cold precision die forging for th...

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Bibliographic Details
Published in:Bulletin of the JSME 1985-10, Vol.28 (244), p.2442-2450
Main Authors: Kondo, K, Jitsunari, T, Ohga, K
Format: Article
Language:English
Online Access:Get full text
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Summary:An investigation to obtain the basic data for applying a newly proposed process, utilizing a divided flow to actual gear-toothed machine parts, is described. In the first report, a two step forging method is used for the working of a spur gear and the possibility of cold precision die forging for the gear is examined experimentally, when a preliminary closed die forging is combined with the process utilizing the divided flow. In this experiment, the process has been successful in the complete filling up of materials into a die cavity under a low working pressure and is found applicable to various intial thicknesses of materials. Suitable restriction of a centripetal material flow, is found more effective for decreasing the working pressure and saving the material. 7 ref.--AA
ISSN:0021-3764