Abstract: The
wear forms and reasons of PCBN tools when dry-cutting bearing
steel GCr15 are studied systematically. The effect law of the
workpiece hardness on PCBN tools is gained and tool wearing with
the quickest speed at the workpiece critical hardness is proved.
The life equation at two kinds of workpiece hardness
demonstrates that the effect of the cutting speed on the PCBN
tool life is less than that of carbide tools and ceramic tools.
Key words:
Dry-cutting
PCBN tool Tool wear Tool life Bearing steel GCr15
*
This project is supported by Provincial Natural Science
Foundation of China (No.59975026). Received April 24, 2001; received in
revised form October 25, 2001; accepted March 25, 2002
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