Studies on Passive Cooling Techniques in Dry Machining

Abstract

The article presents the numerical model and computational evaluation of cutting tool insert for passive cooling technique, which reduces the temperature of the insert during dry machining. The technique developed uses heat sink materials for extracting the thermal load of the cutting tool insert indirectly. The developed technique is not affecting the actual machining process. The computational model developed is validated with the experimental data. Also, by using validated computational models, temperatures at the tip of the cutting tool inserts are predicted. The scanning electron microscope photographs reveal that the bonding of work material to the rake surface is considerably reduced for the passive cooling technique.

Keywords:

• Cooling of cutting tools
• Cutting tool insert
• Dry machining
• Flood cooling
• Heat pipe
• Heat sink
• Mist cooling
• Thermal modeling of machining

ACKNOWLEDGMENTS

This research work is funded by All India Council for Technical Education (A.I.C.T.E.) New Delhi, India (File No. 8023/BOR/RID/RPS-12/2007–08) under Research Promotion Scheme, which is gratefully acknowledged. And support given by R&D and Testing Department of Kennametal India, Ltd., Bangalore, India in the setting up of the experiment is sincerely acknowledged.