An optimized algorithm and the verification methods for improving the volumetric error modeling accuracy of precision machine tools

Hui, Lam; Ling, Siying; Wang, Liding; Yu, Zhenjiang; Wang, Xiaodong

doi:10.1007/s00170-020-06266-x

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…The origin of the third relative coordinate system (denoted by Oz) is lied at the outside the center of the spindle head, and it is Z axis displacement relative to the second coordinate system. Combined with the composition of the machine structure, according to the modeling method of the reference [26,27], the modeling process is as follows.…”

Section: Modeling Methodsmentioning

confidence: 99%

Modeling of CNC machine tools’ spatial geometric error based on two-dimensional angle error

et al. 2022

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A modeling method of CNC machine tools’ spatial geometric error is proposed based on two-dimensional angle error in this paper. Different from traditional modeling method, this method takes into account the effect of additional angle errors because the machine tool’s angle errors in the system of the lower guide rail will be passed on to slip board structure to the upper guide rail system. Firstly, after analyzing the principle of two-dimensional angle error, an optimized error compensation model of CNC machine tools’ spatial geometric error contains two-dimensional angle error is established through the traditional homogeneous coordinate transformation matrix method (HTM). Further, by applying the experiment, the compensation effect of the model is verified through comparing the body diagonal errors of CNC machine tools before and after compensation. Experiment results show that the body-diagonal accuracy after compensation based on the optimized model is 87.73% higher than that before compensation, and 54.82% higher than that of the traditional model after compensation. Article Highlights The highlight of the study reported here is threefold: Firstly, the principle of two-dimensional angle error is analyzed. Secondly, an optimized spatial geometric error compensation model of CNC machine tool is established based on the principle of two-dimensional angle error. Thirdly, the compensation effect of the optimized compensation model is verified by comparing the bodies diagonal precision of the machine tool.

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Section: Modeling Methodsmentioning

confidence: 99%

Modeling of CNC machine tools’ spatial geometric error based on two-dimensional angle error

et al. 2022

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“…Apart from obtaining a high machining accuracy, it is important to increase the efficiency of the turning process, which can provide a considerable economic benefit [ 24 ]. Some machine tools are constructed and operated with the aim of achieving the highest possible efficiency, while others are mainly used for precision machining [ 25 ]. Such specialization of machine tools requires the development of specific optimization and control criteria suitable for the individual classes of those tools [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Identification of Frequency Characteristics and Control Signals of a Dynamic System in the Process of Turning

Świć

Gola

2021

Materials

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The article presents the results of the experimental validation of the developed static, time and frequency characteristics under interference and longitudinal feed control of a dynamic system in the process of turning axisymmetric parts. The experiments were conducted on a test bench, consisting of a 16B16P center lathe, a measuring system and a PC with a measurement card. The experiments were carried out to verify the assumptions of the baseline model of the turning process. As part of the study, we determined the static characteristics of the machining process, the time characteristics of the object under interference and under longitudinal feed rate control, and the frequency characteristics of the machine tool system under longitudinal feed rate control. During the experiments, we recorded the observed input and output signal curves and the observed characteristics of the interferences acting on the object, as well as the numerical values of the parameters of the equations describing the model, and in particular the gain of the elastic system, which is difficult to determine by analytical methods. The positive results of the experiments confirm the effectiveness of the proposed models and their usefulness for automation of machining processes.

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Machining accuracy reliability evaluation of CNC machine tools based on the milling stability optimization

Zhang

Yang

et al. 2022

Int J Adv Manuf Technol

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An optimized algorithm and the verification methods for improving the volumetric error modeling accuracy of precision machine tools

Cited by 7 publications

References 40 publications

Modeling of CNC machine tools’ spatial geometric error based on two-dimensional angle error

Modeling of CNC machine tools’ spatial geometric error based on two-dimensional angle error

Theoretical and Experimental Identification of Frequency Characteristics and Control Signals of a Dynamic System in the Process of Turning

Machining accuracy reliability evaluation of CNC machine tools based on the milling stability optimization

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