Comparison and Analysis of Calculation Methods for Rated Static Load of Planetary Roller Screw Mechanism

Kang Xinhong; Wei Peitang; Hu Rui; Zhou Pengliang; Du Xuesong; Zhu Caichao

doi:10.16578/j.issn.1004.2539.2022.11.001

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Comparison and Analysis of Calculation Methods for Rated Static Load of Planetary Roller Screw Mechanism

Theory·Research | 更新时间：2022-12-01

- Comparison and Analysis of Calculation Methods for Rated Static Load of Planetary Roller Screw Mechanism
- Journal of Mechanical Transmission Vol. 46, Issue 11, Pages: 1-9(2022)
- 作者机构：
  
  1.重庆大学机械传动国家重点实验室，重庆 400044
  2.贵州群建精密机械有限公司，贵州遵义 563000
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2022.11.001
  CLC：
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康新泓,魏沛堂,胡瑞等.行星滚柱丝杠副额定静载荷计算方法对比分析[J].机械传动,2022,46(11):1-9.

Kang Xinhong,Wei Peitang,Hu Rui,et al.Comparison and Analysis of Calculation Methods for Rated Static Load of Planetary Roller Screw Mechanism[J].Journal of Mechanical Transmission,2022,46(11):1-9.
康新泓,魏沛堂,胡瑞等.行星滚柱丝杠副额定静载荷计算方法对比分析[J].机械传动,2022,46(11):1-9. DOI： 10.16578/j.issn.1004.2539.2022.11.001.

Kang Xinhong,Wei Peitang,Hu Rui,et al.Comparison and Analysis of Calculation Methods for Rated Static Load of Planetary Roller Screw Mechanism[J].Journal of Mechanical Transmission,2022,46(11):1-9. DOI： 10.16578/j.issn.1004.2539.2022.11.001.

摘要

行星滚柱丝杠副（Planetary roller screw mechanism，PRSM）是一种新型重载传动装置。额定静载荷是反映其承载能力的关键指标。针对目前PRSM额定静载荷计算方法不统一、计算结果差异大等问题，阐述了以滚珠丝杠、滚动轴承、屈服极限和弹塑性线性强化为基础的4种PRSM额定静载荷计算方法并建立相应计算模型，对比分析了结构参数对4种方法所得额定静载荷的影响规律；建立了PRSM弹塑性接触有限元分析模型，对4种计算方法的准确性进行了对比验证；提出了一种基于滚动轴承标准改进的PRSM额定静载荷计算方法。结果表明，以滚动轴承为基础的额定静载荷计算结果与有限元结果符合较好；所提出的改进计算方法，使其计算误差平均值从17.03%降至8.90%，能够较为精确地计算PRSM的额定静载荷，为行星滚柱丝杠副的设计、选型等提供了理论支撑。

Abstract

Planetary roller screw mechanism (PRSM) is a new type of heavy duty transmission devices. Rated static load is a key indicator to reflect its carrying capacity. Aiming at the problems of inconsistent calculation methods of PRSM rated static load and large difference between calculation results at present, four calculation methods of PRSM rated static load based on ball screw, rolling bearings, yield limit and elastic-plastic linear strengthening are expounded and corresponding calculation models are established; the PRSM elastic-plastic finite element contact analysis model is established, and the accuracy of the four calculation methods is compared and verified; an improved PRSM rated static load calculation method based on rolling bearing standards is proposed. The results show that the calculated results of the rated static load based on rolling bearings agree well with the finite element results. The improved calculation method reduces the average error from 17.03% to 8.90%, which can accurately calculate the rated static load of PRSM. It provides theoretical support for the design and selection of planetary roller screw mechanism.

关键词

行星滚柱丝杠副额定静载荷Hertz接触弹塑性力学

Keywords

Planetary roller screw mechanismRated static loadHertz contactElastoplastic mechanics

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