Abstract
This article is focused on the prediction of cutting material durability by Taylor’s model. To create predictive models of the durability of cutting materials in the turning process, tools made of high-speed steel, sintered carbide without coating and with Titanium nitride (TiN) coating, cutting ceramics without coating and with TiN coating were applied. The experimental part was performed on reference material C45 using conventional lathe—type of machine SU50A and computer numerical control machine—CNC lathe Leadwell T-5 in accordance with International Organization for Standardization—ISO 3685. Implementation of the least-squares method and processing of regression analysis made predictions of cutting tool behaviour in the turning process. Using the method of regression analysis, a correlation index of 93.5% was obtained, indicating the functional dependence of the predicted relationship.
Highlights
The production process is influenced by a large number of factors, but it is possible to predict partial parts of the production process, such as the durability of the cutting tool [1], the geometrical accuracy of the machined surface [2], and so on [3,4,5]
Due to the results of the experiments, it is evident that the statement of the STN ISO 3685 standard, which states that the cutting tool life depends on the cutting speed has a linear course in the logarithmic scale is not true
The shape of comprehensive T-vc dependence is an array of line segments or lines, but in any case, it cannot be a single line because at the minimum cutting speed the shelf life would be several hours, which is inconsistent with the experiments
Summary
The production process is influenced by a large number of factors, but it is possible to predict partial parts of the production process, such as the durability of the cutting tool [1], the geometrical accuracy of the machined surface [2], and so on [3,4,5]. The author Iliescu [12] described the durability of cutting tools with metallized coatings in turn by using regression models in his research. Author Nicolich [1] describes the comparison between two different experimental methods for predicting the cutting-edge tool life in turning: Standard ISO 3685 and the proposed one that is mentioned here, that make free the variation of cutting parameters, in particular the cutting speed. In 2017, research was carried out describing tool-life modelling based on cutting parameters and hardness in the turning process. A similar issue (machinability and tool life) was the turning of by nickel-based superalloy using coated carbide inserts was tool discussed inprocess the paper.
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