DOI: 10.18503/1995-2732-2022-20-1-95-104
Abstract
Predicting accuracy on circular CNC grinding operations is a challenging task, which has still not been completely solved. Relevance of the task is determined by the lack of a digital tool at various manufacturers to monitor control programs for ensuring the set processing accuracy. To accomplish this task, it is proposed to use a digital twin of the circular grinding operation, which describes the process of surface shaping. The objective of the research is to develop a model for calculating the cutting depth in different sections of the processed surface at a circular plunge grinding of the shaft with variable ease along the entire grinding length. The model for calculating the cutting depth in different sections is a «digital twin» of the grinding process, which simulates the process of removing a metal layer of variable thickness simultaneously along the entire length of the grinded surface on each revolution of the workpiece, considering the variable ease of the technological system. As a result, it becomes possible to calculate the current values of the grinded surface dimensions used to calculate the processing error of diametrical dimensions, shape and relative location of surfaces. To develop the model, the authors used simulation modeling methods with applying analytical methods of mathematical modeling based on the fundamental physical laws and fundamentals of cutting mechanics and the theory of metal flow in the chip formation zone. Scientific novelty of the studies presented in this article lies in the development of a digital twin of the processed surface shaping, which for the first time establishes the interrelation between the cutting depth, cutting modes, elastic deformations, cutting forces, etc. and processing accuracy. The model for calculating the cutting depth, presented in this paper, can be used not only to predict processing accuracy in the monitoring system of the CNC control program, but also to optimize the cutting modes of the designed operation. This determines great practical relevance of the obtained results in manufacturing.
Keywords
circular grinding, digital twin, cutting depth model, rigidity of the technological system, processing error.
The research was funded by the Ministry of Science and Higher Education of the Russian Federation (grant No. FENU-2020-0020).
For citation
Akintseva A.V., Pereverzev P.P. Modeling the Cutting Depth Change in Different Sections of the Processed Surface in the Digital Twin of the Circular Plunge CNC Grinding Operation. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2022, vol. 20, no. 1, pp. 95–104. https://doi.org/10.18503/1995-2732-2022-20-1-95-104
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