Research on three-dimensional parametric solid modeling method of variable modulus non-standard rack
DING Guolong
WANG Anyu
WANG Zhifan
XUE Leigang
Abstract：[Objective]In order to solve the problem that the gear rack of automobile steering gear cannot be modeled directly and the repetitive work is too much,a three-dimensional parametric modeling method based on SolidWorks software secondary development was proposed to realize the staggered shaft variable transmission ratio curve rack.[Methods]Firstly,the macro program code was written in SolidWorks/VBA for parametric modeling of gear cutter and rack blank respectively.Then,according to the meshing motion relation of pinion and rack and the line angle transmission ratio curve,the generating maching process was simulated,and the 3D model of the rack with variable transmission ratio curve was obtained.Finally,the correctness of the model was verified by the example and error analysis.[Results]The example verification shows that this modeling method is feasible and can significantly improve the efficiency of product design.
Keywords：Non-standard rackStaggered axis speed ratioMacro programThree-dimensional parametric modelingVariable ratio curve rack
Publication Date：2025-08-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 69-76 )