In order to obtain the dynamic characteristics of the end face engagement worm gear,the relationship of carrying capacity and deformation between different structure types of worm was analyzed,and the scientific analysis and demonstration were made.The Dynamic analysis model of worm was set up by using the finite element method,and transient dynamic analysis of meshing moment was analyzed.At first,by transient dynamics analysis which based on the dynamic model,the contact stress,equivalent effective stress and Total deformation of the end face engagement worm gear were obtained,respectively.Secondly,the dynamic characteristics of the end face engagement worm gear were analyzed theoretically and compared.The transient dynamic performance and deformation were analyzed and compared,respectively between the end face engagement worm gear and anti-backlash double-roller enveloping hourglass worm gearing,and between the end face engagement worm gear and double roller end face meshing worm pair.The results showed that the worm gear are at least simultaneously engaged with eight pairs of teeth,and the yellow part can clearly see the maximum stress at the tooth top.Under the same condition,the contact stress of the end face of the engaging worm gear is reduced more than 33%,compared with the backlash double roller enveloping hourglass worm.The maximum equivalent stress of the end face engagement worm gear is only 22% of backlash double roller worm,equivalent stress of the end face of the worm have a clear relationship with selecting the location of spiral position.Compared with the double roller end face meshing worm pair,the end face meshing worm pair has strong anti-deformation ability. Transient analysis result of double roller end worm showed that whent=0.056 5 s the deformation of the worm is significant over time.This method provides a theoretical basis and engineering applications for the new worm reducer,and other applications in the field.
