Stress Analyses of CBN Insert in Hybrid Machining of RBSN Ceramic
This article investigates the significant improvement in cutting tool life in machining of Reaction Bonded Silicone Nitride (RBSN), using cryogenic coolant. A finite element model is developed to analyze stress distributions in the Cubic Boron Nitride (CBN) cutting inserts used in a hybrid turning process. The analysis reveals that the decrease in cutting tool temperature caused by cryogenic cooling leads to a decrease of stresses in the cutting tool, especially when micro-cracks are present. It is found that a decrease in temperature from 1740 to 788 degrees C leads to approximately 56% stress reduction at the flank face of the cutting tool.
Boron nitride; CBN; Cutting tools; RBSN; Hybrid machining; Machining; Silicon nitride; Strains and stresses; Stress analyses
Manufacturing | Materials Science and Engineering | Mechanical Engineering | Mechanics of Materials | Process Control and Systems
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Stress Analyses of CBN Insert in Hybrid Machining of RBSN Ceramic.
Machining Science and Technology, 8(1),