CBN - SUMIBORON One-Use Wiper Inserts WG / WH
■ Features ● CBN - SUMIBORON single-use insert with wiper edge for hardened steel machining. ● Excellent surface roughness comparable to grinding. ● Improved machining efficiency with higher speeds and feeds. ● Lineup of standard feed: WG and high feed: WH.
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■ Wiper Insert Operation
■ Wiper Insert Finished Surface Roughness Wiper Insert (WG / WH)
Standard Insert (No Wiper, .0313" Nose Radius)
f: Feed Rate
Low Feed Machining ( f = .0039 IPR)
High Feed Cutting ( f = .0117)
Low Feed Machining ( f = .0039 IPR)
High Feed Cutting ( f = .0117)
Feed Direction
Rz (Max. height)
Wiper Edge
Surface Roughness
f: Feed Rate
Insert
WG
WH
Feed Direction
Rz (Max. height)
Work Material
Surface Roughness Rz (Max. Height)
0.63μm
1.39μm
1.98μm
9.20μm
The wiper insert offers good finished surface roughness and improved machining efficiency.
730
■ Recommended Cutting Conditions (Surface Roughness Standard 1.6s to 3.2s) ● For optimum effectiveness, use wiper inserts
WH
WG
BNC2010
500
for continuous cutting. Note that a nose radius insert should be used for profiling. ● Chattering and undulation may occur. Use work material and machines with high rigidity.
WG
WH
BNC2020
330
WH
WG
BN2000
165
.0159
.0039
.0079
.0019
.0119
Feed Rate f (IPR)
WG: Feed Rate f = .0079 IPR or Less Recommended (Finished Surface Roughness Rz = 1.6 to 3.2μm) WH: Feed Rate f = .0079 IPR or More Recommended (Finished Surface Roughness Rz = 1.6 to 3.2μm) Lineup of 5 grades to suit each cutting speed (BN2000, BNC2010, BNC2020, BNC200, BNC160)
■ Precautions when Using Wiper Inserts
CNGA / CCGA / WNGA
WG Type / WH Type Wiper Insert
· Use a holder with a cutting edge angle of 95°. · Machining program modification required CNGA / CCGA/ WNGA wiper inserts do not comply with the ISO standard. Correct the cutting edge position (tool offset) as explained on the right.
CNGA / CCGA / WNGA Wiper Insert Cutting Edge Position Offset (WG / WH)
Nose Radius Type X-axis direction Z-axis direction
External Turning
Cutting edge angle 95°
-.0008" -.0008" -.0024" -.0024" -.0004" -.0004" -.0024" -.0024"
WG
.0156"
WH
WG
.0313" / .0469"
WH
Z axis (+)
DNGA / DCGA
WG Type / WH Type Wiper Insert
· Use a holder with a cutting edge angle of 93°. · Machining program modification required DNGA / DCGA wiper inserts
DNGA / DCGA Wiper Insert Cutting Edge Position Offset (WG / WH)
Nose Radius Type X-axis direction Z-axis direction
External Turning
-.0067" -.0004" -.0276" -.0024"
WG
do not comply with the ISO standard. Correct the cutting edge position (tool offset) as explained on the right.
.0156"
Cutting edge angle 93°
WH
-.0020" 0
WG
.0313"
-.0228" -.0020"
WH
Z axis (+)
Note: Unlike other contour shapes, the DNGA / DCGA can only exhibit wiper effect for outer and inner diameter machining, and cannot be used for facing.
L27
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