Page 20 - CBN_2018
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PCBN Edge Preparation
Choosing the Right Edge Preparation F
PCBN INSERTS
H/E
F – Finishing / continuous:
H/E – Honed 0.03-0.04(mm)
0.13mmX15°+honing
T
T – Medium continuous:
0.14mmX20°
R M
R – Roughing / interrupted: M – Medium / light
0.13mmX35°+honing interrupted:
0.13mmX25°+honing
PCBN Edge Preparations:
Sharp edges are generally not recommended R - Land for roughing/interrupted
on PCBN since the sharp edge can chip or applications (0.13mmX35°+honing).
break quickly. A sharp edge can be used
when cutting forces need to be reduced due M - Land for medium/light interrupted
to unstable workpiece clamping or machine applications (0.13mmX25°+honing).
limitations.
F - Land for finish / continuous
H/E - Honed Edge (honing only) applications (0.13mmX15°+honing).
Honing helps strengthen and protecting
the edge from chipping and fracturing. T – Land (chamfer without honing)
Honing can bring benefits (superior surface) T-land is a common edge preparation
in special finishing applications. on PCBN/Ceramics (0.14mmX20°).
20 ISCAR
