... drill bit temperature measurement. To measure the temperature of an object by infrared camera, the surface emissivity should be known first. The schematic device diagram of surface emissivity calibration is shown in Figure 1 . A FLIR A325 infrared camera with 60 Hz capturing speed and 320...

... of routing temperature. Design/methodology/approach – The background of this research is introduced first. Then the method to measure the routing temperature on-line by using an infrared camera is presented. The routing process is characterized by investigating the routing temperature. Tool design...

... measurement system was first established by the utilization of an infrared camera. Then the drill bit temperature in a drilling cycle was characterized. The temperatures of an ultra‐small micro drill bit and a coated drill bit were measured and compared. Findings The temperature of an ultra‐small drill...