摘要
根据分形理论的结合面法向接触刚度分形模型,建立综合宏观几何和微观形貌的齿面法向接触刚度分形数学模型,以不同表面精度的齿轮为对象进行研究分析。结果表明:表面微观因素对法向载荷和法向接触刚度的影响具有综合性,沿齿廓啮合点表面接触系数具有差异性;通过提高齿面精度(降低粗糙度)能够提高齿轮啮合面法向接触刚度。为满足实际工程应用需求,应综合考虑宏观几何和齿面精度,对啮合面接触刚度进行定性和定量研究。
According to normal contact stiffness fractal model of joint surface under the fractal theory,the macro geometric parameters and load sharing ratio were combined to establish a fractal mathematical model of normal contact stiffness of tooth surface.The proposed model considered both macro geometry and micro topography.The gears with different surface accuracy were studied and analyzed.The result shows that the effect of surface micro-factors on normal loads and normal contact stiffness is comprehensive.The surface contact coefficient of engagement points is different along the tooth profile.The normal contact stiffness of engagement surface can be increased by increasing the accuracy of tooth surface(reducing the roughness).The macro-geometry and tooth accuracy should be comprehensively considered to qualitatively and quantitatively study the contact stiffness of engagement surface for meeting engineering applications such as high quality and high parameters.
作者
徐文博
黄红涛
王晓鹏
李纪强
XU Wenbo;HUANG Hongtao;WANG Xiaopeng;LI Jiqiang(Business Department of Special Transmission,Zhengzhou Research Institute of Mechanical Engineering Co. , Ltd, Zhengzhou 450052,China)
出处
《成组技术与生产现代化》
2020年第2期1-5,44,共6页
Group Technology & Production Modernization
基金
国家重点研发计划资助项目(2018YFB2001300)
郑州机械研究所有限公司技术发展基金资助项目(113SJ2018002)。
关键词
齿轮
法向接触刚度
分形理论
加工精度
gear
normal contact stiffness
fractal theory
machining accuracy
