SUMIBORON Inserts CBN Insert Edge Specification
■ Edge Treatment Performance
Machining of Hardened Steel
Powdered Metal Machining
LE Type R Honing
Powdered Metal
Emphasis on Dimensional Tolerance and Surface Roughness
LF Type
Burr Control Emphasised
No R Honing
LT Type No R
LE Type
Suppressed Breakage at High Speeds/High Feeds
R Honing
Honing LS
LS Type
Type
R Honing
R Honing
L
ES Type R Honing
Emphasis on Dimensional Tolerance and Burr Control
Standard No R Honing
Surface Roughness Emphasised
Standard R Honing
Burr Control for Interrupted Cutting
HT Type HS Type R Honing No R Honing
HS Type
Suppressed Breakage with Interrupted Cutting
R Honing
Breakage Control Emphasised
Heavy
Frequency of Interruption
Heavy
Frequency of Interruption
Comparison of Cutting Force with Coated CBN (v c = 330 SFM)
Cutting Force Comparison (Feed Rate: f = .0019 IPR)
Part Material: Alloy
Part Material: Alloy Structural Steel Tool Cat. No. CNGA432 Cutting Conditions: v c = 660 SFM f =.0019 IPR a p = .0079" Dry
Structural Steel
60
100 110
BN7000
BN7500
BNC2020
Tool Cat. No. DNGA432 Cutting Conditions: v c = 330 SFM f = .0039 IPR a p = .0039" Dry
50
90
BNC2020 BNC2020
80
40
70
60
30
BNC2010 BNC2020 BNC300
50
40
20
30
20
10
10
Feed Force
Feed Force
0
LE Type LT Type LS Type ES Type Standard HS Type 0
LF Type
LE Type
LS Type Standard HS Type HS Type
Hone Only
) Sharp Edge Without Honing (
Back Force
Back Force
(S00715) (T01215) (S00525) (S01225)
(
)
) Hone Only
(
(T00515) (S00515) (S00535) (S01225) (S02735)
Principal Force
Principal Force
Relationship between Cutting Edge Treatment and Machining Quality
Comparison of Cutting Force with Coated CBN (v c = 660 SFM)
Part Material:
Part Material: Powder Metal 90HRB Tool Cat. No.: 3NU-TNGA332 (BN7500) Edge Specification: LF Type, Standard, HS Type Cutting Conditions: v c = 330, 660, 1,000 SFM f = .0039 IPR a p = .0079” Wet
Low Alloy Steel
100 110
Tool Cat. No.:
BNC2020
DNGA432 Cutting Conditions: v c = 660 SFM f = .0039 IPR a p = .0039" Dry
90
80
BNC2020 BNC2020
70
60
50
BNC2010
BNC2020 BNC300
40
30
20
Surface Roughness
Good
0 10
Feed Force
Small
Burr
LE Type LT Type LS Type ES Type Standard HS Type (T00515) (S00515) (S00535) (S01225) (S02735) ( ) Hone Only
Back Force
Principal Force
LF
Comparison of Cutting Force for Uncoated SUMIBORON
Part Material:
Bearing Steel
100 120 140 160 180 200
BN2000
Tool Cat. No.:
CNGA120408 Cutting Conditions: v
Standard
c = 660 SFM f = .0039 IPR a p = .0079" Dry
20 40 60 80
HS
Feed Force
0
LT Type
HS Type
Standard
v c = 330 SFM
v c = 660 SFM
v c = 1,000 SFM
Back Force
(T01215)
(S01225)
(S01235)
Principal Force
L29
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