Numerical investigations of the Thermal Behavior of a Circular Sawing Process with Internal Coolant Supply (ICS)

Tool wear is significantly influenced by the temperatures that occur during machining. To minimize tool wear, effective cooling of the machining process is crucial. This study investigates both the thermal load and the development of the temperature field of the tool during circular sawing across multiple cuts. A simulation-based FEM model is employed to represent the heat input during the cutting phase and the convective heat dissipation during the remaining rotation of the tool. During this rotation, the convective heat transfer coefficient is modelled considering both the cutting fluid that coats the tool and the surrounding air. Additionally, another numerical model is used to evaluate the impact of an internal coolant supply (ICS) on the heat transfer between the coolant and the workpiece. Given the challenge of manufacturing internal coolant supply channels in a circular sawing blade, this study aims to accurately assess the effect on heat transfer with a reduced number of cooling channels in the circular saw. This includes examining the impact on heat transfer for various entry angles of the coolant supply.