In order to explore the influence law of original errors included machine tool kinematic errors

tool wear errors on the profile machining accuracy of sun-worm

based on the multi-body system error-modeling method and the conjugate meshing theory of spatial mechanism

the sunworm profile equation included these errors is deduced.The normal error between worm theoretical profile and error profile is calculated by using Newton iteration method and the result is analyzed to describe the effect of each error and comprehensive error on sun-worm profile accuracy.The main research conclusion can effectively disclosure and predict the law of influence that the various errors for sun-worm profile normal error.Consequently

a scientific proof is supplied to compensate machine geometric errors and improve the precision and quality of the sun-worm.