Authors: S.S. Nozirzoda, E.I. Nikitin

Title of the article: Development of a mathematical model for the formation of a convex helicoid shape of the blade working body of the geokhod

Year: 2023, Issue: 6, Pages: 32-40

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 622.23.05

DOI: 10.26730/1816-4528-2023-6-32-40

Abstract: In the development of design and technological solutions for the manufacture of a bladed working body tunneling underground geokhod unit, it is important to determine the relationship between the parameters of the cross-section of the bladed with the kinematic parameters of the points of the cutting edges. Тo simulate the process of forming a bladed working body, the profile of a helicoid-shaped bladed is analyzed. The kinematic changes in the cross-section of the bladed working body of the geokhod for the destruction of a soft rock mass, which changes relative to a stationary spatial system, are considered. to obtain the trajectory of changing the points of the cutting edge, a matrix transformation method was applied. as a result of modeling, systems of equations of the extreme points of the cutting edges with one variable are obtained, the dependence of the angle of rotation β on the coordinates along the z axis is revealed. according to the given parameters of the bladed cross-section, a system of equations is obtained, which allows, depending on the optimal geometric characteristics of the cutting edge of the bladed, to obtain the trajectory of the change of points. a special program has been developed in the MATLAB environment for solving a system of equations, the results of which are a graph of the trajectory of the points of cutting edges. the results of the research can be useful in the formation of manufacturing technology of the main elements bladed working body of the geokhod for the development of control programs for processing the working surfaces of the bladed, which require high accuracy and quality of processing.

Key words: geokhod bladed working body cutting edge coordinates geometric parameters

Receiving date: 25.11.2023

Approval date: 30.11.2023

Publication date: 21.12.2023

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