Empirical modeling of cutting force from technological factors in hard turning of 105WCr6 steel

The article is devoted to the mechanical load determination on process constants during hard turning of 105WCr6 instrumental steel. The work contains the results of three-factor laboratory experiment on end face turning. The blanks were rings, hardened to a hardness of 55 HRC. Their outer diameter was about 50 mm. During the experiment, the basic process parameters, namely cutting modes, were varied. Semiproducts were turned on a Russian CNC lathe modification 16B16T1C1. The system includes integrated diagnostic subsystem with encoders and current sensors. These sensors allowed using indirect method for mechanical loads assessment. To mathematically explain the force level statistical methods are used. They were linear regression for exponential formula and decision trees. The results of the mathematical investigation and the future review of the studied correlations are given. The results are compared with previously developed machine learning models.