Geometric and Motion Error Model and Precision Analysis of Multiaxial EDM

Abstract:

The precision of Multiaxial EDM is improved by a geometric and motion error model of EDM. A lower numbered body array is introduced to describe the EDM with a homogeneous coordinate transformation used to model the geometric and motion errors of a typical body in the multi-body system. Multi-body kinematics are employed to derive the structural and motion relations and the corresponding location error equation。 The motion error chain for the EDM is analyzed to develop a versatile error model. An entire Multiaxial EDM is analyzed as an example to determine its errors. The method provides a reference for Multiaxial EDM precision design.

• Periodical: Applied Mechanics and Materials (Volume 742)
• Pages: 631-635
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.742.631
• Online since: March 2015
• Authors: Min Wang, Qiang Zhou*, Jian Yong Liu, Li Jun Zhai
• Keywords: Error Model, Multiaxial EDM, Multi-Body Kinematics, Precision Analysis

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