Calculation Model of Contact Load and Axial Stiffness of Planetary Thread Roller Bearing Based on Direct Stiffness Method,Advanced Theory and Simulations

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Calculation Model of Contact Load and Axial Stiffness of Planetary Thread Roller Bearing Based on Direct Stiffness Method
Advanced Theory and Simulations ( IF 2.9 ) Pub Date : 2023-05-05 , DOI: 10.1002/adts.202300126
Zhijie Xie ₁ , Yu Wang ₁ , Hao Zhan ₁ , Wenjian Xie ₂ , Jixian Deng ₂ , Di Yu ₁ , Jihui Yin ₁

Affiliation

Planetary Threaded Roller Bearing (PTRB) is a new bearing suitable for the heavy load linear drive mechanism. The load is transferred internally through annular threads, affecting the bearing capacity of the thread's contact load distribution characteristics. The structure of PTRB is discretized to study the contact load distribution of PTRB. The axial stiffness of the thread's teeth, its axial stiffness, and the contact stiffness of contact points are calculated. Moreover, a 1D equivalent spring network model is proposed based on discretized structure and stiffness. The PTRB contact load calculation model is proposed using the direct stiffness method and a 1D equivalent spring network model. Finally, the accuracy of the model proposed in this paper for calculating the contact load distribution of threaded teeth is verified by comparing the results obtained from theoretical model calculations, finite element methods, and experiments. The theoretical model proposed in this paper can provide theoretical guidance for PTRB parameters.

中文翻译：

基于直接刚度法的行星螺纹滚子轴承接触载荷和轴向刚度计算模型

行星螺纹滚子轴承（PTRB）是一种适用于重载直线驱动机构的新型轴承。载荷通过环形螺纹向内部传递，影响螺纹的接触载荷分布特性的承载能力。对PTRB的结构进行离散化，研究PTRB的接触载荷分布。计算螺纹齿的轴向刚度、其轴向刚度以及接触点的接触刚度。此外，提出了基于离散结构和刚度的一维等效弹簧网络模型。采用直接刚度法和一维等效弹簧网络模型提出了PTRB接触载荷计算模型。最后，通过理论模型计算、有限元方法和实验结果的比较，验证了本文提出的螺纹齿接触载荷分布计算模型的准确性。本文提出的理论模型可为PTRB参数提供理论指导。

更新日期：2023-05-05

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