Abstract
The paper presents a concept, a mathematical model and a control algorithm of an automated system for workpiece leveling. In the proposed solution, a workpiece is placed on a set of electrically-powered variable-length supports. The location of each support is not known before the leveling. A current orientation of workpiece is measured by a precise biaxial inclinometer. The leveling is performed in three stages which involve subsequent extensions of supports and measuring the resulting orientation. This system allows determining the location of each support and the required displacements of each support that are necessary for leveling the workpiece. The system is controlled by an industrial PLC. A single power source and motion controller as well as a distributed demultiplexer, which activates each support, are used to reduce the cost. The supports were manufactured and tested for accuracy and repeatability according to ISO 230-2:2014. The proposed solution can be used for layout and for leveling workpieces on a machine tool table.
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Abbreviations
- αn, βn:
-
angles between gravity vector and normal vector of the inclinometer to XZ and YZ plane in its local coordinate system at n-th stage of leveling
- a, b :
-
lengths of support extensions during leveling
- G :
-
gravity vector
- g :
-
gravitational acceleration constant
- k0, k1, k2:
-
normalizing coefficients
- N :
-
normal vector of the plane
- P0, P1, P2:
-
supports and support contact points
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Acknowledgments
The authors would like to thank Waldemar Adam from DMG Mori for his thoughtful comments on our work. This research was partially supported by National Centre for Research and Development (INNOTECH K3/IN3/15/226458/NCBR/14) and Ministry of Science and Higher Education (DSPB).
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Pelic, M., Bartkowiak, T., Gessner, A. (2019). Automated System for Workpiece Leveling on a Machine Tool. In: Diering, M., Wieczorowski, M., Brown, C. (eds) Advances in Manufacturing II. MANUFACTURING 2019. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-18682-1_3
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DOI: https://doi.org/10.1007/978-3-030-18682-1_3
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