Method for an Effective Selection of Tools and Cutting Conditions during Precise Turning of Non-Alloy Quality Steel C45

Abstract

The paper presents a constructing methodology for a modern approach to tools selection and solving the problem of assigning optimal cutting parameters for specific production conditions. The mathematical formulation determining the extreme values of the technological process optimality criteria is obtained. A system of technical and economic quality indicators for cutting tools is proposed. This system allows principles’ implementation of decentralization and interoperability “Industry 4.0” via finite element modeling of the cutting process based on solving the problem of orthogonal free cutting modeling. The proposed methodology further usage is possible by creating a standardized database on the parameters of the tool: the adhesive component of the friction cutting coefficient for processing of a specific pair of cutting and tool materials (or tool coating material) and the impacts of the cutting-edge radius on cutting efficiency of a particular material.

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

“…The technology of manufacturing helical and toothed surfaces requires an analytical approach to their shaping [36], the optimization of the technological route [37,38], the study of the latest approaches to stabilization of turning processes [39], and the development of special designs of cutting tools to ensure their shaping with minimal errors [40,41]. As presented by [42], the thread screw wear prediction method explains that reducing the ambient temperature is beneficial for enhancing the wear resistance of the screw.…”

“…The standard regulates 31 standard sizes of tool-joint tapered threads, which are formed as external threads for the pin (Figure 12a) and as internal threads for the box (Figure 12b). The example concerns the standard size of the tool-joint thread NC23 based on the application of a special visual application program developed by the authors of this paper (Onysko and Kopei) based on the algorithm ( 24)-( 27), (37), and (38). The visual application Figure 12.…”

“…The example concerns the standard size of the tool-joint thread NC23 based on the application of a special visual application program developed by the authors of this paper (Onysko and Kopei) based on the algorithm ( 24)-( 27), (37), and (38). The visual application [80] is improved by using calculating the coordinates of the points of rectilinear sections of the thread profile (Figure 1).…”

“…According to Equations ( 39)-( 41), the X-coordinates of the vertices of the fundamental triangle A, B, and D are as follows (Figures 14 and 15 Based on the algorithm ( 24)-( 27), (37), and (38) and the data Xa, Xd, and Xb as well as the values γ = 0 and λz = 0, the values of the Z-coordinates of the vertices of the fundamental triangle A, B, and D were obtained: Zd = 3.17 mm (Figure 14); Zb = 3.33 mm (Figure 15). Diagrams (Figures 14 and 15) obtained on the basis of visualization of the algorithm ( 24)-( 27), (37), and (38) developed by Onysko and Kopei [80] show the rectilinear nature of the lateral fundamental profile of the NC23 thread under the condition of using a The exact values of the coordinates Zd = 3.17 mm and Zb = 3.33 mm were obtained using the algorithm ( 24)-( 27) and (38). Half-profile angles αL and αsh (Figures 14 and 15) are determined by the formulas…”

Using Regression Analysis for Automated Material Selection in Smart Manufacturing

“…As a result, a new design structure was validated based on the dependencies of the strength of materials in terms of deflections and stresses. Ivchenko et al [6] developed a method for choosing cutting conditions. The proposed approach considered cutting conditions during precise turning of non-alloy carbon steel AISI 1045.…”