渐开线斜齿轮整体虚拟滚齿仿真及齿面精度研究

利用专业三维软件CATIA V5的宏程序功能,基于共轭齿面包络加工原理,研究了滚刀加工渐开线斜齿轮的计算机虚拟加工问题,完成了斜齿轮的整体虚拟滚齿切削仿真技术。利用CATIA中的命令提取并结合由虚拟加工得到的众多细小曲面来形成齿轮齿面,实现了精确齿轮整体模型的仿真加工方法,并通过与理论齿面比较,齿面精度误差在1μm以下,验证了该方法的正确性,并对可能影响齿面精度的加工因素进行了探讨。本方法为提供齿轮机床的误差形成原理,以及理论齿面和误差齿面的齿轮有限元分析提供了一个虚拟的三维数据研究平台。

Study on the Virtual Hobbing Simulation and Tooth Surface Accuracy of the Entirety of Involute Helical Gears

Based on the gear generation principle,taking the professional software as the tool,the problem of virtual hobbing simulation of involute helical gears was studied,and the virtual hobbing simulation of the entirety of gear was completed by using macros of CATIA V5.The accurate gear tooth surface was obtained by extracting and integrating tiny curved faces which were made through virtual hobbing.The method of virtual hobbing simulation of involute helical gears was accomplished.The validity of this method was validated through analyzing the tooth surface accuracy error of the model which was below 1μm between the virtual tooth surface and the theoretical tooth surface and the possible factors affecting the tooth surface accuracy during manufacturing was also discussed.It offers a fictitious 3D platform for studying on the principle of gear cutting machine’s error as well as the finite element analysis for the theoretical tooth surface and the erroneous tooth surface.