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Temperature simulation and its application in on-line temperature measurement of a micro drill bit

Hongyan Shi (Shenzhen Key Laboratory of Advanced Manufacturing Technology for Mold & Die, Shenzhen University, Shenzhen, People’s Republic of China)
Hui Li (College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, People’s Republic of China)
Shengzhi Chen (Shenzhen University, Shenzhen, People’s Republic of China)

Circuit World

ISSN: 0305-6120

Article publication date: 2 February 2015

Abstract

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

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.

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 increased. The micro drill bit temperature drop rate reaches 20° in the micro-drilling retraction process with certain parameters. The micro drill bit highest temperature detected by an infrared camera is lower by 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 an infrared camera in the drilling process. Drilling experiments show that the simulation method is correct and has certain practical significance. The current temperature measurement method can satisfy most of the requirements of temperature measurements.

Keywords

Acknowledgements

This research work was funded by the project of the Shenzhen Science and Technology Development Funds, under the grant number JCYJ20120613164044732.

Citation

Shi, H., Li, H. and Chen, S. (2015), "Temperature simulation and its application in on-line temperature measurement of a micro drill bit", Circuit World, Vol. 41 No. 1, pp. 1-6. https://doi.org/10.1108/CW-10-2014-0045

Publisher

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Emerald Group Publishing Limited

Copyright © 2015, Emerald Group Publishing Limited