DOI: 10.18503/1995-2732-2022-20-3-103-110
Abstract
Current CAM systems do not have any “digital tool” for predicting the stability of accuracy and quality indicators, when manufacturing a batch of parts. As a result, production units are forced to test the assigned cutting modes for meeting the requirements of the drawing for accuracy, frequently keeping them low at the same time. This leads to a decrease in performance of modern CNC machines and makes it impossible to digitalize the entire machine-building industry in Russia. Therefore, predicting the stability of accuracy and quality indicators, when manufacturing a batch of parts, in a “digital environment” is currently relevant. To solve this issue, an analytical model of metal removal is proposed for CNC-controlled flat grinding with a stepwise change of the programmed feed to a depth, without considering the traverse feed. The model establishes a functional interrelation between the cutting depth, elastic deformations of the technological system, and other parameters of the processing operation, considering the influence of unstable geometry generation conditions. As a result, it becomes possible to calculate changes of the technical size and the error of its manufacturing throughout the entire cycle. This model is designed by a simulation modeling using analytical methods of mathematical modeling that follows the basic physical laws and basic provisions of cutting mechanics and the theory of plastic deformation of metal in the chip formation zone. Scientific novelty of the studies presented in this paper lies in the development of the analytical model of metal removal, which establishes the interrelation between the cutting depth, cutting modes, elastic deformations, cutting forces, etc. and the processing accuracy on CNC-controlled flat grinding operations. The model of metal removal presented in this paper can be also used to optimize the cutting modes of the designed operation of flat plunge grinding. As a result, it is possible to say about the great practical significance of the research results for machine-building production.
Keywords
flat grinding, CNC, model, cutting depth, cycle, programmed feed
For citation
Akintseva A.V., Pereverzev P.P. Model of Calculating the Current Value of the Cutting Depth in an Automatic Stepwise Cycle of the Programmed Feed on a Cnc-Controlled Flat Grinding Operation. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical Uni-versity]. 2022, vol. 20, no. 3, pp. 103-110. https://doi.org/10.18503/1995-2732-2022-20-3-103-110
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