Research on the correction of encIosed Iine diagram Iimiting conditions for the seIection of gear transmission modification coefficients
ZHANG Wei
HOU Xiaochen
HOU Keqing
Abstract：[Objective]To determine the modification coefficient using a well-defined and comprehensive enclosed line diagram method,the aim is to optimize the transmission performance of modified gears,improve meshing characteristics,reduce structural dimensions,and approximately fulfill design requirements such as equal strength.[Methods]A verification was conducted on the limit values of 235 enclosed line diagrams on the limiting curve in Involute Modified Gear Transmission edited by Zhang Zhan.During this process,it was discovered that the original enclosed line diagram had errors in determining the starting point position of the involute profile working section when setting certain limiting conditions.In response to this technical challenge,the problem of determining the starting point position of the involute profile working section was successfully solved,and the corresponding calculation formula for the limiting conditions was derived.On this basis,the"Enclosed Diagram Software for Gear Modification Coefficient Selection V2.0"was developed using VB.NET language.[Results]The vector enclosed line diagram was accurately drawn on the AutoCAD platform,and necessary corrections were made to the original erroneous enclosed line diagram.
Keywords：Enclosed line diagramStarting point of tooth profile working segmentMaximum undercut radiusLimiting condition
Publication Date：2025-06-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 94-101 )