Stress Analyses of CBN Insert in Hybrid Machining of RBSN Ceramic
Machining Science and Technology
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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),