scholarly journals Tool Wear Inspection of Polycrystalline Cubic Boron Nitride Inserts

2018 ◽  
pp. 259-266 ◽  
Author(s):  
Chandula Wickramarachchi ◽  
T. E. McLeay ◽  
S. Ayvar-Soberanis ◽  
W. Leahy ◽  
E. J. Cross
Keyword(s):  
Boron Nitride ◽  
Tool Wear ◽  
Cubic Boron Nitride ◽  
Polycrystalline Cubic Boron Nitride

Tool Wear of Polycrystalline Cubic Boron Nitride Compact Tools in Cutting Hardened Steel

2012 ◽  
Vol 488-489 ◽  
pp. 724-728 ◽  
Author(s):  
Tadahiro Wada
Keyword(s):  
Particle Size ◽  
Boron Nitride ◽  
Tool Wear ◽  
Tool Life ◽  
Cubic Boron Nitride ◽  
Cutting Speed ◽  
Hardened Steel ◽  
Polycrystalline Cubic Boron Nitride ◽  
Cbn Tool ◽  
High Cutting Speed

Using polycrystalline cubic boron nitride compact (cBN) tools, which have different cBN contents and cBN particle sizes, the influences of both the cBN content and the cBN particle size on tool wear in turning of hardened steel at various cutting speeds was experimentally investigated. Three types of cBN tools (a cBN content of 45-55% and 75%, and a cBN particle size of 0.5 μm and 5 μm, respectively) were tested. Furthermore, three kinds of chamfered and honed cutting edges were also used. The main results obtained are as follows: (1) In the case of the cBN tools with the same cBN particle size of 5.0 μm, the tool life of the cBN tool with a cBN content of 75% was longer than that of the cBN tool with a cBN content of 45% at low cutting speed. However, at high cutting speed, the tool life of the cBN tool with a cBN content of 75% was shorter. (2) The tool life of the cBN tool with both a cBN content of 55% and a cBN particle size of 0.5 μm was the longest. (3) The tool wear of cBN tools decreased with a decrease in chamfer width.

The performance of polycrystalline cubic boron nitride tools in continuous, semi-interrupted, and interrupted hard machining

2009 ◽  
Vol 223 (8) ◽  
pp. 947-953 ◽  
Author(s):  
T Halpin ◽  
G Byrne ◽  
J Barry ◽  
E Ahearne
Keyword(s):  
Boron Nitride ◽  
Tool Wear ◽  
Large Scale ◽  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
Wear Behaviour ◽  
Hard Machining ◽  
Polycrystalline Cubic Boron Nitride ◽  
And Performance ◽  
Hot Hardness

Polycrystalline cubic boron nitride (PCBN) cutting tools have enabled large-scale industrial hard machining owing to their high hot hardness and wear resistance. Experience clearly shows that tool requirements vary depending on the presence and severity of interrupts in the workpiece. The interrelationships between workpiece interruption parameters and tool wear and performance are assessed using a programme of continuous, semi-interrupted, and interrupted hard machining tests. A hypothesis for observed variations in wear behaviour between different PCBN grades and test conditions is developed on the basis of detailed tool wear scar analyses.

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