Modelling and experimental validation for thrust force and heat generation during bone drilling

The development of heat as well as the thrust force that is produced during the cortical bone drilling is emphasised in the present work. Experiments were conducted using two distinct kinds of tools and varying combinations of drilling parameters (rotational speed and feed rate) (conventional drill bit and cylindrical abrasive tool). A thermocouple and a dynamometer were used to record the increase in temperature as well as the force that was applied. A mathematical model was built in order to predict the amount of heat that was transferred from the drill bit to the bone as well as the amount of tension that was induced throughout the drilling process. Because the findings of the mathematical model were validated against the experimental data, using a mathematical model to forecast the heat generation and force induced to the cortical bone during drilling is an effective method. The primary zone heat found to be 0.217 w and thrust force found to be 1.42 N with the developed mathematical model. The model that was proposed can be used to make predictions about the values of the drilling parameters that could be used for optimal cortical bone drilling without inflicting any damage to the fundamental structure of the bone.