Position-independent thermal error compensation and evaluation based on linear correlation filtering technology

Position-independent thermal error compensation and evaluation based on linear correlation... Compensation for position-independent thermal error on the spindle is necessary and economical. Considering the nonlinearity and time-dependent characteristics of the thermal error, classical methods always adopt complicated models for compensation, which are always impracticable without robustness and efficiency. This paper proposes a concise error model based on two linearity sensitive points (LSPs) which are identified by linear correlation filtering technology. The precision of double-LSP model is verified to be nearly stable with spindle speed variation through different data validation. The compensation strategy based on axes origin offset (AOO) function is implemented on commercial system, and the cutting experiment comparison is carried out on the horizontal machining center. A step-shaped cutting test workpiece is designed for evaluating the precision of PITE compensation. Result shows that up to 84.84% thermal deformation is effectively compensated, which indicates a valuable prospect in industry. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The International Journal of Advanced Manufacturing Technology Springer Journals

Position-independent thermal error compensation and evaluation based on linear correlation filtering technology

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag London Ltd.
Subject
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
ISSN
0268-3768
eISSN
1433-3015
D.O.I.
10.1007/s00170-017-1099-y
Publisher site
See Article on Publisher Site

Abstract

Compensation for position-independent thermal error on the spindle is necessary and economical. Considering the nonlinearity and time-dependent characteristics of the thermal error, classical methods always adopt complicated models for compensation, which are always impracticable without robustness and efficiency. This paper proposes a concise error model based on two linearity sensitive points (LSPs) which are identified by linear correlation filtering technology. The precision of double-LSP model is verified to be nearly stable with spindle speed variation through different data validation. The compensation strategy based on axes origin offset (AOO) function is implemented on commercial system, and the cutting experiment comparison is carried out on the horizontal machining center. A step-shaped cutting test workpiece is designed for evaluating the precision of PITE compensation. Result shows that up to 84.84% thermal deformation is effectively compensated, which indicates a valuable prospect in industry.

Journal

The International Journal of Advanced Manufacturing TechnologySpringer Journals

Published: Nov 10, 2017

References

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