Abstract
In order to decide the optimum tooth form of die-wheel, computer simulations of a roll-finishing by a die-wheel with profile and longitudinal modifications were carried out. It was revealed that modifications of a die-wheel should be determined in consideration of a tooth form roll-finished by a die-wheel without any modifications, i.e. a tooth form of die-wheel should be hollowed out at the position corresponds to the hollowed part of a roll-finished tooth form and should be projected at the position corresponds to the projected part of a roll-finished tooth form. Furthermore, experiments of roll-finishing with a modified die-wheel were carried out. It is found that profile and longitudinal modifications of die-wheel determined by a manner mentioned above is very effective. And a fairly good roll-finished tooth form can be obtained by using such a die-wheel, provided that an interference between the tooth tip of die-wheel and the tooth root of work-gear is prevented by a tip relief of die-wheel.,
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