Analysis of kinetic precision on conjugate cams beating-up mechanism
TANG Xue-mei1，2，ZHU Wei-lin1，LAI Qi-wei1，WU Shi-jing1，HE Jia1
（1. School of Power and Mechanical Engineering，Wuhan University，Wuhan 430072，China
2. School of Mechanical Engineering and Automation，Wuhan Textile University，Wuhan 430073，China）
Abstract：In order to solve the problems of poor reliability，poor stability，low speed and low precision movement of domestic loom，learning the error analysis method of moving disk-cams and rollers，the inversion principle of cam mechanism，the theory of effectivelength and the method of conversion mechanism were applied to the movement precision analysis of loom. Considering the three errorsincluding dimension errors，clearances of hinged joints and surface wear caused by conjugate cam in beating- up mechanism，the
corresponding calculation methods for position errors of the follower of beating rocker in beating-up mechanism with swing rollers wereinvestigated. The relationship between position errors of the follower and cam angle was established. The motion accuracy simulation ofbeating-up mechanism was carried out by Maple software. The results show that the surface wear caused byconjugate cam affected themotion accuracy of conjugate cam in beating-up mechanism is greatest in the considered three major errors. It has some guidance and
practical value to improvement of shuttle-less loom and development of high speed rapier loom.
Key words：beating-up mechanism；kinetic precision；conjugate cams；error analysis