Abstract
Geometric error compensation is important in improving the machining accuracy of five-axis machine tools. To improve the efficiency of real-time compensation, this paper proposes a novel compensation method based on a novel representation of the volumetric error. First, 5 error parameters in the workpiece-tool coordinate system are employed to describe the volumetric error, simplifying the actual reverse kinematics from an overdetermined problem to a well-determined problem. Second, the actual inverse kinematics solution, neglecting the position-varying feature of geometric errors, is derived by a simple operation. Finally, the actual inverse kinematics solution considering the position-varying feature of geometric errors is derived based on a linear approximation of geometric errors at the command position nearby. Compared with traditional compensation methods, the proposed method could guarantee higher efficiency since it has a concise analytical expression. Simulation and experiment results are then illustrated to validate the effectiveness of the proposed method.
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Funding
This work was supported by the Natural Science Foundation of Shaanxi Province (2021JM010), the Natural Science Foundation of Suzhou (SYG202018), and thr Fundamental Research Funds for the Central Universities (xzy012019007).
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Hongdong Cong: Validation, investigation, and writing—original draft. Jun Zha: Funding acquisition. Yaolong Chen: Supervision and project administration.
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Cong, H., Zha, J. & Chen, Y. Efficient compensation method of 5-axis machine tools based on a novel representation of the volumetric error. Int J Adv Manuf Technol 126, 1109–1119 (2023). https://doi.org/10.1007/s00170-023-11117-6
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DOI: https://doi.org/10.1007/s00170-023-11117-6