B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
73/119, 153/16
B21D 39/08 (2006.01) B21D 39/20 (2006.01) B21D 53/84 (2006.01)
Patent
CA 2005404
A process for allowing the attachment of drive or coupling elements, such as cams, gears, crank webs or bearing elements, such as friction bearing bushes, or complete roller bearings on tubes or tubular portions by hydraulic expansion, for the purpose of producing assembled cam shafts, transmission shafts, crank shafts or the like, with the expansion of the tubes taking place exclusively in the region of the respective elements beyond the limit of elasticity of the tubes, against a permanent elastic prestress in the elements. To relieve the load on the seals limiting the regions to be expanded, a counter pressure which is higher than the ambient pressure is applied to the intermediate or end regions.
Un procédé permettant la fixation, par expansion hydraulique, d'éléments d'entraînement ou de raccordement comme des cames, des pignons, des joues de vilebrequin ou des paliers, des coussinets ou des roulements à billes complets sur des tubes ou des portions tubulaires afin de produire des arbres à cames, des arbres de transmission, des vilebrequins, etc. L'expansion des tubes se produit exclusivement dans la région des éléments respectifs au-delà de la limite d'élasticité des tubes, en sens opposé d'une précontrainte élastique permanente dans les éléments. Pour contrebalancer la charge sur les joints délimitant les régions à expanser, une contre-pression supérieure à la pression ambiante est appliquée aux régions intermédiaires ou d'extrémité.
Maus Wolfgang
Swars Helmut
Emitec Gesellschaft Fur Emissionstechnologie Mbh
Ridout & Maybee Llp
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