基于NURBS曲面表示的齿轮齿面光顺

Fairness of Gear Tooth Surface Described by NURBS

在依据齿面三维离散测量数据所构建的弧齿锥齿轮或准双曲面齿轮齿面NURBS模型的基础上,进一步采用能量法建立了弧齿锥齿轮齿面模型光顺的目标函数,并使用外点惩罚函数法对齿面进行了光顺处理。通过光顺齿轮可以消除部分测量误差的影响,使后续的齿面接触分析过程更加流畅。所给出的计算实例证明了该方法的可行性和有效性。

According to the 3D scattered measuring data,a digital model of spiral bevel gear or hypoid gear tooth surface is developed by NURBS method.A fairing objective function is proposed by energy methodology and using the exterior penalty function method fairs the tooth surface.Fairness of tooth surface can decrease the effect ion of the measurement error and make the following TCA easier. The calculating examples show that this method is practicable and effective.