Open AccessThe determination of the relation between the drill diameter and the correction coefficient of the relative thickness of the drill core when calculating the axial force
Author(s) -
Raluca Daicu,
Catrina Chivu
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1009/1/012017
Subject(s) - drill , drilling , core (optical fiber) , mathematics , geology , physics , mechanical engineering , engineering , optics
When drilling metals, the determination of the axial force is necessary for multiple applications. In the literature the algorithm for calculating the axial force is quite well presented but there is an exception, namely, the correction coefficient of the axial force in relation to the relative thickness of the drill core where several iterations are needed. To determine the relationship between the diameter of the drill and the correction coefficient of the axial force, we start from the expression of the axial force developed based on the hypothesis of polytropic compression of the material to be processed where the correction coefficients are applied when practical situations require it. From the methodology of calculating the correction coefficient in relation to the relative thickness of the drill core it is found that there are three stages. In this paper we eliminate two steps by determining the relationship between the diameter of the drill and the correction coefficient for the relative thickness of the drill core and also improves the calculation both by developing a relationship that can be easily applied and by building a graph that helps upon rapid identification of the correction coefficient.