Общий каталог Tungaloy 2020 - 2021 - страница 231

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T-CBN Series B

Honing specifications

  • T-CBN inserts with special honing specifi cations are made to order. Refer to the following description. Designation system for honing C

Example: Honing width W

Honing width: 0.15 mm

Honing angle: - 3 0°

With R-honingRake faceD
S 0 1 3 2 5
Honing angle α
R-honing
ShapeHoning width (W)Honing angle (α)
Relief faceE
T … Chamfered honing● Symbol
S … Chamfered + R-honing
αHoning angleQHoning specifi cation can be selected in combination
E … R-honing aloneAmount of
Wof items described here.
honing (mm)10°-10°
F … Sharp edgeQInserts with “R” honing alone are available.
0 0 50. 0 515°-15°
0 100.102 0°F - 2 0°
0 130.132 5°- 2 5°
0 150.153 0°- 3 0°
0 180.183 5°- 3 5°
4 0°- 4 0°
Relationship between honing angle and tool life in continuous turningRelationship between honing angle and tool life in interrupted turningG
150Cutting conditions300Cutting conditions
W orkpiece material:W orkpiece material:
Chromium molybdenum steelChromium molybdenum steel
125
(JIS SCM415), 60 HRC200(JIS SCM415), 60 HRC
Insert: TNGN160404 BX360Insert: TNGN160404 BX360
100VV
Cutting speed:c = 100 m/minCutting speed:c = 100 m/min
Feed: f = 0.15 mm/rev100Feed: f = 0.15 mm/revH
75aa
Depth of cut:p = 0.25 mmDepth of cut: p = 0.25 mm
Coolant: DryCoolant: Dry
500
−20º −15º −25º−30º−35º −40ºTool life criterion: VBmax = 0.15 mm−15º−20º−25º−30º−35º −40ºTool life criterion: Fracture
Honing angleHoning: -°+ R-honingHoning angleHoning: -°+ R-honing
•For continuous cutting, small honing angle is favorable to minimize wear.I
•For interrupted cutting, large honing angle is favorable to minimize fracture.
Standard honing specifi cations
GradeBXM10 BXM20 BXA20 BXC50 BX310BX330BX360BX380BX470BX480BX910BX930
Negative insertS01325S01325S01325S01325S01325S01325S01325S01325T01315S01325S01315S01315J
Positive insertS01325S01325S01325−S00515S00515S00515−T01315S00515S01315S00515

Wiper insert Wiper edge geometry

A fi nishing edge (wiper edge) is formed at the point of intersection K

between corner radius and straight cutting edge.

Effect of wiper edge

Doubles the productivity J Reduced machining time

The wiper edge can double the feed rate and moreover does not deteriorate

the surface roughness. (Note: Feed rate: *f < 0. 3 mm/rev) L

Superior surface roughness J By integrating roughing and fi nishing into one

process, productivity can be increased. Compared with conventional inserts only with corner radius, surface roughness can be improved with the wiper edge. Wiper edge

Profi les of surface roughness Recommended toolholders for wiper inserts

Sectional profi le of surface machined M with conventional insert 2QP-CNGA1204**WL 3QP-WNGA080408WL 2QP-DNGA1504**WJ 3QP-TNGA1604**WG

RemovedEnd cutting 95°93°91°
angle
ATGNR/L**16-A
ACLNR/L**12-AAWLNR/L**08-AADJNR/L**15-A
External ATFNR/L**16-A
toolholderDTGNR/L**16
DCLNR/L**12DWLNR/L**08DDJNR/L**15
Sectional profi le of surfaceDTFNR/L**16

When machining machined with wiper insert When machining

Internal A**-ACLNR/L12-D... A**-AWLNR/L08-D... A**-ADUNR/L15-D... A**-ATFNR/L16-D...

with conventional with wiper insert toolholder

insert Tungaloy