陈诚,陈瑞,周丹丹.温度致丝杠伺服系统直线度误差研究[J].国外电子测量技术,2016,35(11):42-45
温度致丝杠伺服系统直线度误差研究
Study on straightness error of screw servo system caused by temperature
  
DOI:
中文关键词:  滚珠丝杠  热误差  直线度误差  误差检定
英文关键词:ball screw  thermal errors  straightness error  error detection
基金项目:天津市科技特派员项目(No. 15JCTPJC59900)、国家级大学生创新创业训练计划项目(201610069009)资助
作者单位
陈诚 天津商业大学机械工程学院机械系 天津 300134 
陈瑞 天津商业大学机械工程学院机械系 天津 300134 
周丹丹 天津商业大学机械工程学院机械系 天津 300134 
AuthorInstitution
Chen Cheng School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China 
Chen Rui School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China 
Zhou Dandan School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China 
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中文摘要:
      滚珠丝杠副是精密伺服驱动系统核心零部件,随着丝杠运行,温度升高会导致丝杠单轴伺服系统直线度误差增加。为了明确该误差及其产生规律,建立滚珠丝杠副热误差模型,分别对滚珠丝杠副的热源、温度场以及热误差模型进行了研究。根据滚珠丝杠副的结构特点,确定其内部热源及温度场分布规律,分析热误差的特性。设计实验,检定温度变化前后的直线度误差,设定5 min间隔分段运行,明确温度和直线度误差的变化过程及规律。实验结果表明,随着温度升高,丝杠直线度误差随着丝杠本身的弯曲状态会出现更为明显的弯曲,剔除丝杠自身存在的直线度误差和检定过程中斜率误差后,直线度误差增加了11.4 μm。本文得到丝杠直线度误差随温度变化的规律,可以应用于其他空间驱动系统整体几何误差的检定和补偿,具有较强的工程应用前景。
英文摘要:
      Ball screw is the core of precision servo drive system components, with the screw to run, the temperature will lead to increased single axis screw servo system straightness error. In order to clarify the error and its generating rule, a thermal error model of the ball screw is established, and the heat source, temperature field and thermal error model of the ball screw pair are studied respectively. According to the structural characteristics of the ball screw, the distribution rules of the heat source and the temperature field are determined, and the characteristics of thermal error are analyzed. Design experiment, test the straightness error before and after the temperature change, pass 5 minutes interval to run, clear the temperature and straightness error of the process of change and the law. The experimental results show that, with the temperature rise, screw straightness error with the screw itself bending state will appear more obvious bending, remove the screw itself exists straightness error and calibration process slope error, straightness The error is increased by 11.4μm. In this paper, the error of screw straightness with temperature is obtained, which can be applied to the verification and compensation of the overall geometric error of other space driving systems, which has a strong engineering application prospect.
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