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论文:2015,Vol:33,Issue(2):229-236 |
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引用本文： |
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张文杰, 刘更, 马尚君, 佟瑞庭. 不同安装方式下行星滚柱丝杠副载荷分布研究[J]. 西北工业大学学报 |
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Zhang Wenjie, Liu Geng, Ma Shangjun, Tong Ruiting. Load Distribution of Planetary Roller Screw Mechanism with Different Installations[J]. Northwestern polytechnical university |
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| 不同安装方式下行星滚柱丝杠副载荷分布研究 |
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| 张文杰, 刘更, 马尚君, 佟瑞庭 |
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| 西北工业大学陕西省机电传动与控制工程实验室, 陕西西安 710072 |
| 摘要: |
| 综合考虑行星滚柱丝杠副轴段刚度、螺纹牙刚度和接触刚度及安装方式、受力状态等因素,建立了行星滚柱丝杠副螺纹牙载荷分布计算模型。在对计算模型验证的基础上,详细分析了安装方式、受力状态、结构参数和牙型参数等对螺纹牙载荷分布的影响规律。结果表明,决定螺纹牙载荷分布规律的主要因素是行星滚柱丝杠副的材料参数、结构参数与安装方式,其中丝杠与螺母的轴向累积弹性变形是引起行星滚柱丝杠副螺纹牙载荷分布不均的主要原因。螺纹牙刚度对载荷分布的影响较小,随着螺纹牙刚度的减小,载荷分布不均程度逐渐降低。此外,滚柱螺纹牙个数与螺距对载荷分布的影响很大,载荷分布不均程度随着螺纹牙个数的增大或螺距的增大而增大。 |
| 关键词:
行星滚柱丝杠副
载荷分布
安装方式
刚度
弹性变形
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| Load Distribution of Planetary Roller Screw Mechanism with Different Installations |
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| Zhang Wenjie, Liu Geng, Ma Shangjun, Tong Ruiting |
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| Shaanxi Engineering Laboratory for Transmissions and Controls, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| A model for calculating load distributions of threads in Planetary Roller Screw Mechanism (PRSM) with different installations is developed, in which the shaft stiffness, thread stiffness and contact stiffness of screw, rollers and nut in PRSM are taken into consideration. The proposed model is verified in comparison with an existing model. The effects of installations, load conditions, structural parameters and thread form parameters on the load distributions of threads are studied thoroughly. The results and their analysis show preliminarily that:(1) The main factors which affect the load distribution are material parameters, structural parameters and installation; (2) The accumulative axial deformations of screw and nut are the main reasons which cause the uneven distribution of loads acting on threads; (3) The load distribution among threads becomes slightly evener when the thread stiffness is decreased; (4) The tooth number of rollers and pitch of the threads will remarkably affect the load distribution, and the load distribution will be more uneven with the increase of the tooth number or pitch. |
| Key words:
PRSM (planetary roller screw mechanism)
load distribution
installation
stiffness
elastic deformation
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| 收稿日期: 2014-09-23
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(51275423)、教育部高等学校博士学科点专项科研基金(20126102110019)、中国博士后科学基金(2014M552483)、高等学校学科创新引智计划(B13044)与西北工业大学基础研究基金资助 |
| 通讯作者:
Email： |
| 作者简介: 张文杰(1988-),西北工业大学,主要从事行星滚柱丝杠副设计、制造及其承载特性的研究。
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