# Influence of Micro-Textures on Cutting Insert Heat Dissipation  
[PERSON]  
1 Centre for Research & Development in Mechanical Engineering-Department of Mechanics (CIDEM-DEM/ISEP), School of Engineering, Polytechnic Institute of Porto, [PERSON], 712, 4200-465 Porto, Portugal; [EMAIL_ADDRESS] (J.R.); [EMAIL_ADDRESS] (O.C.P.) [PERSON]  
1 Centre for Research & Development in Mechanical Engineering-Department of Mechanics (CIDEM-DEM/ISEP), School of Engineering, Polytechnic Institute of Porto, [PERSON], 712, 4200-465 Porto, Portugal; [EMAIL_ADDRESS] (J.R.); [EMAIL_ADDRESS] (O.C.P.) [PERSON]  
2 Center for Microelectromechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurem, 4800-068 Guimaraes, Portugal; [EMAIL_ADDRESS] (B.G. ); [EMAIL_ADDRESS] (G.M. ); [EMAIL_ADDRESS] (F.S.S.) [PERSON]  
3 Instituto Politecnico de Bragna, Department of Applied Mechanics, Campus de Santa Apolona, 5300-253 Bragna, Portugal; [EMAIL_ADDRESS]  
[PERSON]  
2 Center for Microelectromechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurem, 4800-068 Guimaraes, Portugal; [EMAIL_ADDRESS] (B.G. ); [EMAIL_ADDRESS] (G.M. ); [EMAIL_ADDRESS] (F.S.S.) [PERSON]  
2 Center for Microelectromechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurem, 4800-068 Guimaraes, Portugal; [EMAIL_ADDRESS] (B.G. ); [EMAIL_ADDRESS] (G.M. ); fsamuele@dem. process, which must be extracted from the cutting zone using conventional or more advanced cooling techniques [6]. Several cooling methods have been attempted to reduce the temperature, namely high-pressure cooling, minimum lubrification quantity, compressed air cooling, heat pipe cooling, cryogenic cooling, and internal cooling [7; 8; 9; 10; 11]. A new line of research is focused on combining the micro-textures with high-pressure cooling to increase the thermal dissipation in turning and milling operations [3; 4; 12; 13]. The introduction of micro-textures on the cutting inserts has been explored to increase lubrication efficiency and, thereby, reduce to the minimum the amount of cutting fluid [14]. An extensive survey on textured cutting insert performance, for different machining processes, texturing methods, cutting insert materials, tool coatings, workpiece metal materials, and lubricant conditions, can be found in [15]. The nano and micro surface texturing are introduced near the tool's cutting edge to reduce cutting forces, friction, tool wear, surface roughness, machining temperatures, adhesion of particles, and to extend tool life [2; 15; 16; 17]. The nano textures reduce the chip adhesion when machining aluminum, while the combination of nano- and micro-textures reduces built-up edge formation when machining carbon steel alloys [15]. Other studies show that the combination of nano- with micro-textures is also effectively reducing the adhesion of aluminum to the tool, for dry and lubricated conditions [18]. A review of the mechanisms behind improving cutting performance through the application of surface coatings, high-energy beam treatments, and surface texturing is presented in [19]. It's mentioned the purpose of texturing is to improve the tribological properties of the cutting insert surface, by enhancing the lubrication at the chip-tool interface, trapping the abrasive particles, reducing the contact area, and promoting chip evacuation [19]. Tools abrasion by the wear particles can benefit from the trapping mechanism of the particles due to the microchannels. These can also reduce the surface tension, resulting in increased cutting fluid spreading speed and the surface wettability, improvement in lubrication effect, and the overall tool performance [15; 20; 21; 22; 23; 24]. Round grooves are the most used textures due to their simple manufacturing process. These continuous channels have the advantage of conducting cutting fluid faster than round dimples, leading to a smaller contact length between the chip and the tool [25; 26].