Geometric error compensation through position feedback modification and comparison of correction strategies in 3- axis machine-tool
Article dans une revue avec comité de lecture
Author
Date
2025-06Journal
Journal of Manufacturing ProcessesAbstract
In machine-tools, geometrical defects are unavoidable. They can greatly affect the dimensional accuracy of the final workpiece if not corrected. Software compensation strategies are less expensive than mechanical adjustments and they provide great improvement in volumetric accuracy. In this study, different compensation methods are compared in a 3-axis milling applications: Numerical Controller (NC) internal compensation tables, modification of the programmed tool-path (G code) and modification of position feedback signals. The latter is the main purpose of this work, because it shows great potential and is not linked to one particular type of NC. It communicates with a custom software application that processes the position data and generates corrected signals according to a geometric model based on the rigid body assumption. The NC is then induced to perform volumetric error correction based on its default programming. The compensation methods are compared based on their ability to bring out or correct imposed geometric errors. The highlighted solution shows performances comparable to the G-code modification by correcting more than 96% of the imposed geometric errors without affecting the numerical chain from the program generation to its execution on the machine. It is also independent of the NC or the motors control cards.
Files in this item
Collections
Related items
Showing items related by title, author, creator and subject.
-
Communication avec acteThe dimensional accuracy of machined parts can be influenced by numerous factors, among which inaccuracies in the machine’s structural loop and thermal expansion of components have the biggest impact. Hence, highly accurate ...
-
Article dans une revue avec comité de lecture
GUEVEL, Flore;
VIPREY, Fabien;
EUZENAT, Charly;
FROMENTIN, GUILLAUME;
MASCIANTONIO, Ugo (Springer Science and Business Media LLC, 2025-04-09)
Geometric errors in amachine tool structure are mainly responsible for the volumetric error in theworkspace. They occur at the attachment of each link between axis joints, but also along each axis in their joint frame. ... -
Article dans une revue avec comité de lectureDUCROUX, Edouard;
FROMENTIN, Guillaume;
VIPREY, Fabien; PRAT, David; D’ACUNTO, Alain (Society of Manufacturing Engineers, 2021)
Inconel 718 is widely used in aircraft industry due to its properties. Nevertheless, its mechanical and chemical properties make it hard-to-cut. As a consequence, additive manufacturing is developed in order to get near ... -
Article dans une revue avec comité de lectureTOUBHANS, Bastien;
LORONG, Philippe;
VIPREY, Fabien;
FROMENTIN, Guillaume; KARAOUNI, Habib (Springer Science and Business Media LLC, 2021)
In-process workpiece elastic deflection is the major source of geometrical error when machining low-stiffness workpieces. It creates an undercut error which needs to be corrected by time-consuming and labour-intensive ... -
Article dans une revue avec comité de lectureTOUBHANS, Bastien;
FROMENTIN, Guillaume;
VIPREY, Fabien; KARAOUNI, Habib; DORLIN, Théo (Elsevier, 2020)
Machining accuracy can be compromised by elastic workpiece deformation and subsurface residual stress introduction during cutting. In order to anticipate the impact of cutting forces and surface integrity evolutions on ...