• CN:11-2187/TH
  • ISSN:0577-6686

›› 2001, Vol. 37 ›› Issue (11): 42-45.

• 论文 • 上一篇    下一篇

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3-RRR型数控回转台的精度分析

曾宪菁;黄田;曾子平   

  1. 天津大学机械工程学院
  • 发布日期:2001-11-15

ACCURACY ANALYSIS OF THE 3-RRR NC SWIVEL WORKTABLE

Zeng Xianjing;Huang Tian;Zen Ziping   

  1. Tianjin University
  • Published:2001-11-15

摘要: 研究3-RRR数控回转台的精度分析问题。利用空间矢量链分析法构造零部件制造误差与动角台位姿误差的映射关系,建立相应的精度分析概率模型;在此基础上对设定零部件加工精度等级后的动角台位姿进行误差估计和灵敏度分析。研究成果为合理确定零部件尺寸和形位公差及其加工装配工艺的制定提供了理论依据。

关键词: 精度分析, 灵敏度, 球面并联机构, 数控回转台

Abstract: The pose errors of the 3-RRR NC swivel worktable is predicted using a statistical method for a given grade of machining accuracy. The distribution of the pose errors in the workspace is evaluated. Moreover, the sensitivity analysis is carried out to find out the parameters affecting the pose errors significantly.

Key words: Accuracy analysis, NC swivel worktable, Sensitivity, Spherical parallel mechanism

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