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| Improved Chip Evacuation |
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| CBN Tool with Chip Breaker |
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Cutting Conditions
Shaft V=120m/min
d=1.0mm
f=0.25mm/rev
Dry
CNGM120408BB3 (KBN10N) |
| · |
Chipbreaker focused on edge strength as well as chip control |
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No chip clogging, smooth evacuation |
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Ideal for partly interrupted cutting |
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| BB3 Chipbreaker |
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Conventional C
(No Chipbreaker) |
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| Lowering NG (Improving Cutting Precision) |
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| High Precision CBN Tool |
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| Applicable for severe tolerance, lowering process NG |
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Ranking edge location dimension |
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Minimizing edge location deviance after replacing inserts |
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Cutting Conditions
Finishing turning internal dia of inserting portion for bearings
Insert grade/SCM20
V=100m/min
d=0.3mm
f=0.12mm/rev
Tool life 50/Corner |
 No ranking for conventional tool (M and G class) |
| · |
Frequent occurrence of dimension NG after replacing inserts (NG ratio of first workpiece dimension). |
| · |
Lowering operation ratio. |
| High precision CBN |
| · |
Stable dimension accuracy after replacing inserts. |
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Drastic decrease in NG expenses |
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Improvement of operation ratio |
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| NG occurrence ratio |
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| High Precision CVD Tool |
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Cutting Conditions
External finish
V=220m/min
d=1.5mm
f=0.3mm/rev
Wet |
| Conventional |
| Because of severe tolerance of workpiece, M class widens NG expenses with each insert replacement. |
| CVD Coated insert for periphery grinding |
| Stable dimension accuracy during replacement of inserts |
| · |
Drastic decrease of NG |
| · |
Improved operation ratio |
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| NG occurrence ratio |
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Japanese
