Model of Cutting Force While Managing Two Regime Parameters in the Process of Internal Grinding

Abstract

Methodology of optimization of grinding cycles for intragrinding operations requires a process model, establishing the connection between the cutting force occurring in the process of a metal removal and the regime parameters and other technological factors that have a significant impact on its intensity. Process management of internal grinding is carried out for a given cycle which simultaneously involves two controlling regime parameters: radial and axial infeeds actively changing in the process of grinding while the other operating parameters are constant during the entire grinding cycle. The developed model allows calculating the changes of the cutting force depending on variable values of infeeds. Fluctuation of infeeds values in each opening section is caused not only by the control program but also the kinematics of the internal grinding process. It should also be noted that the model of the cutting force provided in this article considers kinematics, peculiarities of the internal grinding and connects the cutting force with the processing regimes (radial and axial infeeds, number of billet and wheel revolutions) and main technological factors (physical mechanical properties of grinding metal, geometric parameters of a contact zone of the billet and the wheel, wheel characteristic, degree of blunting, etc.).