|Table of Contents|

Distribution characteristics of static stiffness for 6-UPS parallel machine tool

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2013年06期
Page:
926-933
Research Field:
Publishing date:

Info

Title:
Distribution characteristics of static stiffness for 6-UPS parallel machine tool
Author(s):
Chen Xiaogang12Sun Yu1Peng Binbin1Liu Yuanwei2
1.School of Mechanical Engineering,NUST,Nanjing 210094,China;
2.Laboratory of Digital Manufacturing Technology,Huaiyin Institute of Technology,Huai'an 223003,China
Keywords:
parallel machine tools static stiffness Euler angles rotation transformation translational stiffness
PACS:
TH112
DOI:
-
Abstract:
To estimate the static stiffness of a cross-linked stewart type(BJ-04-02(A))parallel machine tool,its distribution characteristics of the static stiffness in a workspace is researched.An analytical expression of a static stiffness matrix containing pose(position and orientation)is derived by combining two rotation transformation matrices based on Euler angles and rotation around a spatial axis.The distribution characteristics of the static stiffness in the workspace are revealed in the aspects of the distribution characteristics of the static stiffness in a given layer for a given orientation,the variations of the static stiffness with the coordinate z for a given orientation,the variations of the static stiffness with tilting directions and tilting angles.The distribution figures of the static stiffness in the workspace are obtained.The results show that the distributions of the static stiffness in different layers are similar and the static stiffness increases with the coordinate z and the translational stiffness is influenced slightly by tilting directions and tilting angles.

References:

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Last Update: 2013-12-31