欢迎访问《图学学报》 分享到：
图学学报

图学学报

• 交互技术与虚拟现实 • 上一篇    下一篇

基于虚拟样机技术的平面机构运动精度渐变分析

  

  1. 华南理工大学设计学院，广东 广州 510006
  • 出版日期:2017-04-30 发布日期:2017-04-28
  • 基金资助:
    广东省自然科学基金项目(2016A030310420)；广州市科学研究专项(201510010195)；广东省科技厅软科学项目(N414037b)

Accuracy Analysis of a Planar Mechanism Based on Virtual Model Technology

  1. School of Design, South China University of Technology, Guangzhou Guangdong 510006, China
  • Online:2017-04-30 Published:2017-04-28

PDF (PC)

199

摘要： 运动副间隙不可避免的存在于机械系统中，且随着摩擦磨损其尺寸不断变大，导致
系统运动学和动力学性能的渐变恶化。基于三维建模软件SolidWorks 和虚拟仿真软件ADAMS，
建立含运动副间隙的平面机构模型，进行动力学仿真。并且考虑运动副处的摩擦磨损，对ADAMS
仿真数据进行后处理，通过Matlab 离线计算运动副磨损量，得到时变的运动副间隙尺寸。将磨
损后的运动副尺寸更新到ADAMS 模型仿真，进而得到机构运动精度的渐变过程。结果表明，运
动副磨损区域非均匀分布，机构运动精度及动态性能随运行时间逐渐恶化。

关键词: 虚拟样机, 运动副间隙, 磨损, 精度分析

Abstract: Joint clearances are unavoidable in real mechanical systems, and they will become larger
because of the friction and wear, leading to the kinemics and dynamics of the system become worse
gradually. Based on the 3D modeling software SolidWorks and the virtual simulation software
ADAMS, a planar mechanism with joint clearance is built, and dynamic simulations are done. Further
more, the friction and wear of the joint are taken into consideration, the wear depth is calculated by
the Matlab offline using the data obtained from ADAMS, the time-varying joint clearances are then
obtained. In return, the updated joint clearances are imported into the ADAMS model, thus the
changes of the moving accuracy of the mechanism are observed. The results show that, the wearing
regions of the clearance joint are nonuniformly distributed, the moving accuracy and dynamic
performance of the mechanism are gradually worse with the time.

Key words: virtual simulation, joint clearance, wear, accuracy analysis