Transactions of Materials and Heat Treatment

Title：Load equalization analysis for stepped construction of transmission screw nut tooth

Authors： Zhang Yin Zhang Zhengrong Sun Yousong Huang Fucheng Zhang Guicheng Li Jianping

Unit： Guangdong University of Technology Guangdong Metal Forming Machine Works Co. Ltd.

KeyWords： transmission screw finite-element analysis load equalization tolerance and fit

ClassificationCode：TH131.1

year,vol(issue):pagenumber：2014,39(3):67-72

Abstract：

The finite-element numerical simulation method was applied to establish the model of stepped construction of transmission screw nut, and different types of tolerance and fit of the transmission screw nut were simulated by using parameter language of APDL. The results show that the stress of upper screw tooth and the contact pressure of upper screw tooth surface on the stepped construction of transmission screw nut are increased. The contact surface pressure distribution of single screw tooth is uneven, and the distributed regularity of every screw tooth is different too. It is also found that the stress of screw nut root in the axial direction is presented a change of waving increasing, and based on the average value and standard deviation of axial stresses along the screw nut root, the optimal combination of tolerance and fit is found, which can further improve the load equalization levels of screw nut tooth.

Funds：

国家自然科学基金资助项目（E050802)

Reference：

［1］张尔文，孙友松，章争荣，等.螺旋压力机中阶梯式螺母受力分析[J].试验研究，2007，（2）：87-90.Zhang Erwen, Sun Yousong, Zhang Zhengrong, et al. Stress analysis of the stepped nut in screw press[J] . Experiment & Research,2007,(2):87-90.
［2］周先辉，孙友松，张尔文，等.基于有限元方法的传动螺纹螺牙轴向载荷分布规律分析[J].机械设计与制造，2008，（1）：16-18.Zhou Xianhui, Sun Yousong, Zhang Erwen, et al. Analysis of axial load distribution trend for transmission screw by FEM[J]. Machinery Design & Manufacture,2008,(1):16-18.
［3］白卫卫，苗德华，薛强.螺母外形结构对螺栓疲劳强度的影响[J].机械研究与应用，2004，17（6）：27-28.Bai Weiwei, Miao Dehua, Xue Qiang. The effect of nut configuration on the fatigue strength of bolt[J]. Mechanical Research & Application, 2004,17(6):27-28.
［4］孟宪志，康红普.锚杆螺纹与螺母连接力学特性的数值模拟研究[J].煤矿开采，2013，18（1）：54-57.Meng Xianzhi, Kang Hongpu. Numerical simulation of anchored bolt's thread and nut linkage mechanical characteristic[J]. Coal Mining Technology , 2013,18(1):54-57.
［5］刘贤玉，于永南，宋作苓，等.弯曲载荷下隔水管特殊螺纹接头参数与应力关系研究[J].石油矿场机械，2012，41（7）：6-10.Liu Xianyu, Yu Yongnan, Song Zuoling, et al. Research on relations of stress and parameter of premium threaded connections on riser subjected to bending load[J].Oil Field Equipment , 2012,41(7):6-10.
［6］Kenny B, Patterson, Patterson E A. Load and stress distribution in screw threads [J]. Experimental Mechanics, 1985,(25):208-213.

Service：

【This site has not yet opened Download Service】【Add Favorite】