[1]马尚君,刘更,付晓军,等.考虑弹性变形的行星滚柱丝杠副滚滑特性[J].东南大学学报(自然科学版),2015,45(3):461-468.[doi:10.3969/j.issn.1001-0505.2015.03.009]
 Ma Shangjun,Liu Geng,Fu Xiaojun,et al.Rolling-sliding characteristics of planetary roller screw considering elastic deformation[J].Journal of Southeast University (Natural Science Edition),2015,45(3):461-468.[doi:10.3969/j.issn.1001-0505.2015.03.009]
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考虑弹性变形的行星滚柱丝杠副滚滑特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第3期
页码:
461-468
栏目:
机械工程
出版日期:
2015-05-20

文章信息/Info

Title:
Rolling-sliding characteristics of planetary roller screw considering elastic deformation
作者:
马尚君刘更付晓军佟瑞庭
西北工业大学陕西省机电传动与控制工程实验室, 西安710072
Author(s):
Ma Shangjun Liu Geng Fu Xiaojun Tong Ruiting
Shanxi Engineering Laboratory for Transmissions and Controls, Northwestern Polytechnical University, Xi’an 710072, China
关键词:
行星滚柱丝杠副 螺旋传动 滚动摩擦 弹性变形
Keywords:
planetary roller screw thread transmission rolling friction elastic deformation
分类号:
TH132.1
DOI:
10.3969/j.issn.1001-0505.2015.03.009
摘要:
为了揭示行星滚柱丝杠副滚滑机理,基于滚柱螺纹球面牙型特点,采用等效球的方法,分别建立了未考虑弹性变形和考虑弹性变形的行星滚柱丝杠副滚滑分析模型.通过求解两侧接触点的相对滑动速度,研究其滚滑特性.采用滑-滚比表征两接触侧滑动量与滚动量的相对关系,分别计算了两接触侧滑-滚比,并重点研究了螺纹结构参数中接触角、螺旋升角和滚柱螺纹牙数对两接触侧滑-滚比的影响规律.分析结果表明,考虑弹性变形,丝杠与滚柱接触侧会产生相对滑动,且两接触侧沿螺旋线切向产生的相对滑动速度最大;接触角和螺旋升角对两接触侧滑-滚比的影响趋势均相反,增大螺旋升角更有利于降低螺母侧滑-滚比;滚柱螺纹牙数对两接触侧滑-滚比的影响较小.
Abstract:
In order to disclose the rolling-sliding mechanism of the planetary roller screw, the models of rolling-sliding analysis of the planetary roller screw(PRS)with and without elastic deformation are developed by using the equivalent ball method based on the characteristic of spherical surface of the roller thread. The rolling-sliding characteristics are studied by calculating the relative slip velocities of contact points on the screw side and the nut side. The slide-roll ratios of two contact sides are calculated respectively to express the relative amounts of sliding and rolling. Furthermore, the influence of contact angle, helix angle and tooth number of the roller thread on slide-roll ratios is taken into account. The results show that the slide between the screw and the rollers always occurs considering elastic deformation and the relative slip velocity in the direction of tangent along helical trajectory on the screw side and the nut side is the highest. The influence trends of contact angle and helix angle on slide-roll ratios of two contact sides are opposite and the slide-roll ratio of the nut side can be reduced by increasing helix angle. Besides, increasing tooth number of the roller thread has little effect on the slide-roll ratios.

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备注/Memo

备注/Memo:
收稿日期: 2014-09-12.
作者简介: 马尚君(1980—),男,博士,助理研究员;刘更(联系人),男,博士,教授,博士生导师, npulig@nwpu.edu.cn.
基金项目: 国家自然科学基金资助项目(51275423)、教育部高等学校博士学科点专项科研基金资助项目(20126102110019)、高等学校学科创新引智计划资助项目(B13044)、西北工业大学基础研究基金资助项目(3102015JCS05008).
引用本文: 马尚君,刘更,付晓军,等.考虑弹性变形的行星滚柱丝杠副滚滑特性[J].东南大学学报:自然科学版,2015,45(3):461-468. [doi:10.3969/j.issn.1001-0505.2015.03.009]
更新日期/Last Update: 2015-05-20