Journal
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
Volume 36, Issue 3, Pages 369-378Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.precisioneng.2012.02.001
Keywords
Machine tool accuracy; Guideway geometric error; FEM
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Funding
- Resources for National Science Centre [N N504 670440]
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This paper presents the problems of the geometric accuracy of machine tools. The analytical and experimental examinations were carried out for a table in which guideway geometric errors may result in significant deformations. The main aim was to propose a method of analytical examination of the influence of geometric errors in linear guideway on joint kinematic errors. The proposed method served to isolate and simulate geometric errors, one of the causes of volumetric errors in machine tools. This approach helped to understand and interpret the results of experimental examinations of angular kinematic errors (pitch, yaw, roll) obtained for a real machine tool. The results helped to verify the hypothesis that the deformation of a table may be a significant source of errors in volumetric error models. One of the final conclusions indicated that off-line compensation of some characteristics of angular kinematic errors in machine tools may be unjustified. (c) 2012 Elsevier Inc. All rights reserved.
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