Optimization of Characteristic Diagram Based Thermal Error Compensation via Load Case Dependent Model Updates
 
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1
Automation and Monitoring, Fraunhofer IWU Chemnitz, Germany
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Machine tool technology, Fraunhofer IWU Chemnitz, Germany
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Process technology, Fraunhofer IWU Chemnitz, Germany
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Institute for Machine Tools and Production Processes, Chemnitz University of Technology, Germany
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Production Systems and Factory Automation, Fraunhofer IWU Chemnitz, Germany
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Machine Tool Development and Adaptive Controls, Technical University Dresden, Germany
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Process Digitalization and Production Automation, Fraunhofer IWU Chemnitz, Germany
CORRESPONDING AUTHOR
Christian Naumann   

Automation and Monitoring, Fraunhofer IWU Chemnitz, Reichenhainer Str. 88, 09126, Chemnitz, Germany
Submission date: 2022-02-22
Final revision date: 2022-04-04
Acceptance date: 2022-04-08
Online publication date: 2022-04-19
 
 
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ABSTRACT
The compensation of thermal errors in machine tools is one of the major challenges in ensuring positioning accuracy during cutting operations. There are numerous methods for both the model-based estimation of the thermal tool center point (TCP) deflection and for controlling the thermal or thermo-elastic behavior of the machine tool. One branch of thermal error estimation uses regression models to map temperature sensors directly onto the TCP-displacement. This can, e.g., be accomplished using linear models, artificial neural networks or characteristic diagrams. One of the main limitations of these models is the poor extrapolation behavior with regard to untrained load cases. This paper presents a new method for updating characteristic diagram based compensation models by combining existing models with new measurements. This allows the optimization of the compensation for serial production load cases without the effort of computing a new model. The new method was validated on a 5-axis machining center.
 
REFERENCES (21)
1.
RAMESH R., MANNAN M.A., POO A.N., 2000, Error Compensation in Machine Tools – A Review: Part II: Thermal Errors, Journal of Machine Tool Manufacture, 40/9, 1257–1284, https://doi.org/10.1016/-S0890....
 
2.
REGEL J., BRÄUNIG M., RICHTER C., PUTZ M., 2018, Industrial Relevance and Causes of Thermal Issues in Machine Tools, Proc., 1st Conference on Thermal Issues in Machine Tools, Dresden.
 
3.
LI Y., YU M., BAI Y., HOU Z., WU W., 2021, A Review of Thermal Error Modeling Methods for Machine Tools, Applied Sciences, 11, 5216, 2-16, https://doi.org/10.3390/app111....
 
4.
POSTLETHWAITE S., ALLEN J., FORD D., 1999, Machine Tool Thermal Error Reduction – an Appraisal, Proceed. of the Institution of Mech. Engineers, part B, Journal of Engineering Manufacture, 213/1, 1–9.
 
5.
ESS M., 2012, Simulation and Compensation of Thermal Errors of Machine Tools, Dissertation, ETH Zurich.
 
6.
LEE J.-H., YANG S.-H., 2002, Statistical Optimization and Assessment of a Thermal Error Model for CNC Machine Tools, International Journal of Machine Tools and Manufacture, 42, 147–155.
 
7.
CHEN J.S., YUAN J., NI J., 1996, Thermal Error Modelling for Real-Time Error Compensation, International Journal of Advanced Manufacturing Technology, 12, 266–275.
 
8.
YANG H., NI J., 2005, Dynamic Neural Network Modeling for Nonlinear, Nonstationary Machine Tool Thermally Induced Error, International Journal of Machine Tools and Manufacture, 45/4–5, 455–465.
 
9.
BRECHER C., HIRSCH P., WECK M., 2004, Compensation of Thermo-Elastic Machine Tool Deformations Based on Control Internal Data, CIRP Annals Manufacturing Technology, 53/1, 299–304.
 
10.
YANG S., YUAN J., NI J., 1996, Accuracy Enhancement of a Horizontal Machining Center by Real-Time Error Compensation, Journal of Manufacturing Systems, 15/2, 113–124.
 
11.
NAUMANN C., RIEDEL I., IHLENFELDT S., PRIBER U., 2016, Characteristic Diagram Based Correction Algorithms for the Thermo-Elastic Deformation of Machine Tools, Proceedings of the 48th CIRP Conference on Manufacturing Systems (CMS), 41, 801–805.
 
12.
FENG W.L., YAO X.D., AZAMAT A., YANG J.G., 2015, Straightness Error Compensation for Large CNC Gantry Type Milling Centers on B-Spline Curves Modeling, International Journal of Machine Tools & Manufacture, 88, 165–174.
 
13.
TAN K.K., HUANG S., SEET H.L., 2000, Geometrical Error Compensation of Precision Motion Systems Using Radial Basis Functions, IEEE Transactions on Instrumentation and Measurement, 49/5, 984–991.
 
14.
JIN C., WU B., HU Y., 2015, Temperature Distribution and Thermal Error Prediction of a CNC Feed System Under Varying Operating Conditions, Internat. Journal of Advanced Manufacturing Technology, 77, 1979–1992.
 
15.
NAUMANN C., GLÄNZEL J., PUTZ M., 2020, Comparison of Basis Functions for Thermal Error Compensation Based on Regression Analysis – A Simulation Based Case Study, Journal of Machine Engineering, 20/4, 28–40.
 
16.
NAUMANN C., IHLENFELDT S., PUTZ M., 2018, On the Selection and Assessment of Input Variables for the Characteristic Diagram Based Correction of Thermo-Elastic Deformations in Machine Tools, Journal of Machine Engineering, 18/4, 25–38.
 
17.
BRAND M., GIESE T., NAUMANN C., NAUMANN M., GLÄNZEL J., GEIST A., 2021, Der Digitale Zwilling in der Produktentwicklung von Werkzeugmaschinen, Werkzeugmaschinenfachseminar 2020, TU Dresden.
 
18.
NAUMANN C., GEIST A., PUTZ M., 2021, Handling Ambient Temperature Changes in Correlative Thermal Error Compensation, Proceedings 2nd International Conference on Thermal Issues in Machine Tools, Prague.
 
19.
BRAND M., SCHMIDT I., GLÖDE I., DANEK R., TIMME A., 2021, Werkzeugmaschinensteuerung Und Verfahren Zur Kennfeldbasierten Fehlerkompensation An Einer Werkzeugmaschine, German patent DE 10 2020 205 031 A1, Deckel Maho Seebach GmbH.
 
20.
NAUMANN C., PUTZ M., 2019, A New Multigrid Based Method for Characteristic Diagram Based Correction of Thermo-Elastic Deformations in Machine Tools, Journal of Machine Engineering, 19/4, 42–57.
 
21.
NAUMANN C., GLÄNZEL J., IHLENFELDT S., PUTZ M., 2017, Optimized Grid Structures for the Characteristic Diagram Based Estimation of Thermo-Elastic Tool Center Point Displacements in Machine Tools, Journal of Machine Engineering, 17/3, 36–50.
 
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