ANALYSIS AND OPTIMIZATION OF QUICK-RETURN CHARACTERISTICS OF THE BEATING-UP SLEY BASED ON MULTIVARIABLE DESIGN
QIU HaiFei
Abstract：For improving the quick-return characteristics of the sley movement,an optimal mathematical model for maximum curve displacement Sm of the connectingarm pin was proposed through beating-up principle analysis and mechanism deduction.A multivariable design space was constructed by use of the component length(lc,lh,lr,lf)and crankangle α.The parametric functional model development of the four-bar beating-up with short connecting rod was realized,and its kinematic posture and centroid trajectory were analyzed and verified through mechanism simulation.The results of the case study indicate that the vari-able lc and α have more greater influence on the sensitivity of the objective function F(X),and multivariable((DV_1,DV_2,DV_3)coupling can effectively enhance the design plasticity of the quick-return characteristics of the sley.When the maximum curve displacement Sm of the connectingarm pin increases to 71.41 mm,the extreme position angle θ and the travel speed ratio coefficient K are increased by 10.96° and 0.131 respectively,and the quick-return motion effect of the sley is obviously improved.The optimization results accord with the conditions of rod length and mechanism transmission requirement,which are conductive to the design innovation and performance improvement of the four-bar beating-up system.
Keywords：Four-bar beating-upQuick-return characteristicConnecting rodTransmission angleOptimiza-tionPostureSensitivity
Publication Date：2024-10-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 1101-1107 )