Transmission accuracy analysis of parallel compound movable tooth mechanism
DU Xuesong
LEI Hengyi
JIANG Zilong
ZHU Caichao
SONG Hailan
Abstract：[Objective]Aiming at the insufficient research on the influence law of key component manufacturing errors on transmission accuracy and the compensation relation between errors in the field of parallel compound movable tooth transmission,as well as the lack of a transmission accuracy analysis model considering manufacturing errors,research on transmission accuracy analysis and error compensation mechanism was carried out.[Methods]Firstly,a transmission accuracy analysis model considering the main manufacturing errors of two-stage transmission was established based on the lumped parameter method and the meshing line increment method,which provided support for the research on error influence laws.Secondly,the influence laws of single error factors on transmission accuracy and the number of engaged movable teeth were analyzed,and the reasonable value ranges of each error were given.Then,the response surface methodology was adopted to study the influence of combined errors on transmission accuracy.Finally,the sensitivity of each error and the compensation relation between combined errors were discussed.[Results]The results show that manufacturing errors of the planetary stage have little influence on the system transmission accuracy,and the accuracy requirements can be appropriately reduced in design.Manufacturing errors of the movable tooth stage have significant effects on both transmission accuracy and the number of engaged movable teeth.The peak-to-peak transmission error is most sensitive to fixed disc tooth profile error,movable tooth diameter error and impulse generator tooth profile error.Moreover,there exists a compensation effect between movable tooth diameter error and the tooth profile errors of the impulse generator and fixed disc.In engineering practice,precision compensation can be achieved by selecting appropriate movable teeth according to the measured tooth profile errors,which provides a reference for the accuracy design of parallel compound movable tooth transmission.
Keywords：Parallel compound movable tooth transmissionManufacturing errorTransmission accuracyResponse surface method
Publication Date：2026-07-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：11( 107-117 )