Modeling the thermal machine tool error during cooling lubricant usage

Procedia CIRP, vol. 120, pp. 1179–1184

Abstract

The thermo-elastic machine tool error, which is one of the main error sources in a machine tool, can be modeled and corrected using the machine control. In the past, the models to do so have been parametrized using precise measurement equipment like lasertracers. However, these lasertracers cannot be used to measure the thermo-elastic error during cooling lubricant usage, which is necessary for most industrial applications. Therefore, this paper presents a method on how to measure the thermo-elastic machine behavior using Integral Deformation Sensors to compute the tool center point displacement during coolant usage based on a white box modeling approach. These computed displacements are then used to parametrize a correction model that uses low order delays elements.

Authors 6

1. Mathias Dehn corresponding Aachen Laboratory for Machine Tools and Production Engineering (WZL)

   RWTH Aachen University

   Affiliation as printed

   Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University, Steinbachstr. 19, 52074 Aachen, Germany

2. Franziska Plum Aachen Laboratory for Machine Tools and Production Engineering (WZL)

   RWTH Aachen University

   Affiliation as printed

   Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University, Steinbachstr. 19, 52074 Aachen, Germany

3. Nico Bertaggia Aachen Fraunhoffer Institute of Production Technology (IPT)

   Fraunhofer Institute for Production Technology IPT

   Affiliation as printed

   Fraunhoffer Institute of Production Technology (IPT), Steinbachstr. 17, 52074 Aachen, Germany

4. Stephan Neus Aachen Laboratory for Machine Tools and Production Engineering (WZL)

   RWTH Aachen University

   Affiliation as printed

   Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University, Steinbachstr. 19, 52074 Aachen, Germany

5. Daniel Zontar Aachen Fraunhoffer Institute of Production Technology (IPT)

   Fraunhofer Institute for Production Technology IPT

   Affiliation as printed

   Fraunhoffer Institute of Production Technology (IPT), Steinbachstr. 17, 52074 Aachen, Germany

6. Christian Brecher Aachen Fraunhoffer Institute of Production Technology (IPT) Laboratory for Machine Tools and Production Engineering (WZL)

   Fraunhofer Institute for Production Technology IPT · RWTH Aachen University

   Affiliation as printed

   Fraunhoffer Institute of Production Technology (IPT), Steinbachstr. 17, 52074 Aachen, Germany

   Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University, Steinbachstr. 19, 52074 Aachen, Germany