基于VBA的渐开线齿廓测量尺寸的计算  

Involute Tooth Profile Measurement Computing Method Based on VBA

作　　者：徐盛学[1] 

机构地区：[1]广东白云学院,广东广州510450

出　　处：《机电工程技术》2012年第7期105-107,共3页Mechanical & Electrical Engineering Technology

基　　金：广东白云学院2010年度院级科研项目(编号:BYJY201021)

摘　　要：利用AutoCAD VBA技术,当输入齿轮的基本参数后,采用B样条拟合方法,实现了齿廓曲线的自动生成;在此基础上,用AutoCAD绘制出齿轮全图,从齿廓分度圆处作基圆的切线,并延长到另一轮齿的不同侧,直接从图中数出跨越齿数、量出公法线长度。图解法揭示了公法线长度数学计算的实质,校验了计算数据的可靠性,方法有效快捷。A diagram method is introduced for involute tooth profile base tangent length measurement based on VBA.A involute curve profile is auto-generated through B-spline fitting after inputting a gear basic parameter.On the basis of this profile,the gear diagram is established using AutoCAD functions.From the point of involute reference circle,the base circle tangent line is extended to another tooth opposite flank.Then the across teeth number can be counted,and base tangent length can be directly measured through the gear diagram.This method can check mathematic calculate result and improve efficiency of involute gear dimensional measurement.

关 键 词：渐开线齿轮 公法线长度 VBA 尺寸测量 

分 类 号：TH132.413[机械工程—机械制造及自动化]