Circuit World, Volume 41, Issue 1, February 2015.
Purpose The purpose of this paper is to obtain the micro drill bit temperature field distribution in micro-drilling process and the temperature drop in retracting process with simulation software. Meanwhile, the key factors that affect the micro drill bit temperature will be obtained as well. The results can also be used to improve the accuracy in on-line drilling temperature measurement. Design/methodology/approach Software is adopted in this paper to simulate micro drilling and retracting process to get the micro drill bit temperature. The key factors affecting micro drill bit temperature field are studied in the drilling and retracting process as well. Then the improvement of accuracy in detecting drilling temperature via infrared camera is presented Findings Micro drill bit high temperature area mainly concentrates in the cutting edge and chisel edge. With the increase of spindle speed and feed speed, the micro drill bit highest temperature is higher. And micro drill bit temperature drop rate reaches 20 ° in micro-drilling retraction process with certain parameters. The micro drill bit highest temperature detected by infrared camera is lower 22°than that in real drilling. The simulation results can be used to guide the actual industrial production. Originality/value The simulation results can be applied to revise the temperature measurement by infrared camera in drilling process. Drilling experiments show that the simulation method is correct and has certain practical significance. The current temperature measurement method can satisfy the most of requirements of the temperature measurement.
Purpose The purpose of this paper is to obtain the micro drill bit temperature field distribution in micro-drilling process and the temperature drop in retracting process with simulation software. Meanwhile, the key factors that affect the micro drill bit temperature will be obtained as well. The results can also be used to improve the accuracy in on-line drilling temperature measurement. Design/methodology/approach Software is adopted in this paper to simulate micro drilling and retracting process to get the micro drill bit temperature. The key factors affecting micro drill bit temperature field are studied in the drilling and retracting process as well. Then the improvement of accuracy in detecting drilling temperature via infrared camera is presented Findings Micro drill bit high temperature area mainly concentrates in the cutting edge and chisel edge. With the increase of spindle speed and feed speed, the micro drill bit highest temperature is higher. And micro drill bit temperature drop rate reaches 20 ° in micro-drilling retraction process with certain parameters. The micro drill bit highest temperature detected by infrared camera is lower 22°than that in real drilling. The simulation results can be used to guide the actual industrial production. Originality/value The simulation results can be applied to revise the temperature measurement by infrared camera in drilling process. Drilling experiments show that the simulation method is correct and has certain practical significance. The current temperature measurement method can satisfy the most of requirements of the temperature measurement.
