Общий каталог Tungaloy 2020 - 2021 - страница 231

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Time in cut: T (min) Tool life (%) GradeInsertExt. ToolholderInt. ToolholderThreadingGroovingMiniature toolMilling cutterEndmillDrilling toolTooling SystemUser's GuideIndex Te c h n i c a l Guide A T-CBN Series Honing specifications B ● T-CBN inserts with special honing specifications are made to order. Refer to the following description. Designation system for honing Example:Honing width: 0.15 mmHoning angle:- 3 0° Honing width W C With R-honing Rake face S 0 1 3 2 5 Honing angle α R-honing D Shape Honing width (W) Honing angle (α) Relief face T … Chamfered honingS … Chamfered + R-honingE … R-honing aloneF … Sharp edge● SymbolWAmount ofhoning (mm) α10° Honing angle QHoning specification can be selected in combinationof items described here.-10°QInserts with “R” honing alone are available.E 005 0. 0 5 1 5° - 1 5° 010 0. 1 0 2 0° - 2 0° 013 0. 1 3 2 5° - 2 5° 015 0. 1 5 3 0° - 3 0°0180. 1 83 5°- 3 5°4 0°- 4 0° F ᭹ Relationship between honing angle and tool life in continuous turning ᭹ Relationship between honing angle and tool life in interrupted turning 150125 Cutting conditions 300Workpiece material:Chromium molybdenum steel(JIS SCM415), 60 HRC200Cutting conditionsWorkpiece material:Chromium molybdenum steel(JIS SCM415), 60 HRCG Insert: TNGN160404 BX360 Insert: TNGN160404 BX360 100 Cutting speed: Vc = 100 m/min Cutting speed: Vc = 100 m/min Feed: f = 0.15 mm/rev 100 Feed: f = 0.15 mm/rev 75 Depth of cut: ap = 0.25 mm Depth of cut: ap = 0.25 mmCoolant: DryCoolant: Dry50−15º−20º−25º−30º−35º−40ºTool life criterion: VBmax = 0.15 mm0 −15º−20º−25º−30º−35º−40ºTool life criterion: FractureH Honing angle Honing: -ᮀᮀ°+ R-honing Honing angle Honing: -ᮀᮀ°+ R-honing •For continuous cutting, small honing angle is favorable to minimize wear. •For interrupted cutting, large honing angle is favorable to minimize fracture.᭹ Standard honing specifications I Grade BXM10 BXM20 BXA20 BXC50 BX310 BX330 BX360 BX380 BX470 BX480 BX910 BX930 Negative insert S01325 S01325 S01325 S01325 S01325 S01325 S01325 S01325 T01315 S01325 S01315 S01315 Positive insert S01325 S01325 S01325 − S00515 S00515 S00515 − T01315 S00515 S01315 S00515 J Wiper insert Wiper edge geometry ᭹ A finishing edge (wiper edge) is formed at the point of intersection between corner radius and straight cutting edge.᭿ Effect of wiper edge᭹ Doubles the productivity J Reduced machining time K The wiper edge can double the feed rate and moreover does not deteriorate the surface roughness. (Note: Feed rate: *f < 0. 3 mm/rev) ᭹ Superior surface roughness J By integrating roughing and finishing into one process, productivity can be increased.Compared with conventional inserts only with corner radius, surface roughnesscan be improved with the wiper edge. Wiper edge L ᭿ Profiles of surface roughness ᭿ Recommended toolholders for wiper inserts Sectional profile of surface machined with conventional insertRemoved 2QP-CNGA1204**WL 3QP-WNGA080408WL 2QP-DNGA1504**WJ 3QP-TNGA1604**WGEnd cuttingangle95°93°91°ATGNR/L**16-AExternalACLNR/L**12-AAWLNR/L**08-AADJNR/L**15-AATFNR/L**16-AM When machiningwith conventional Sectional profile of surface toolholder DCLNR/L**12 DWLNR/L**08 DDJNR/L**15 DTGNR/L**16DTFNR/L**16machined with wiper insertWhen machiningwith wiper insertInternaltoolholderA**-ACLNR/L12-D...A**-AWLNR/L08-D...A**-ADUNR/L15-D...A**-ATFNR/L16-D... insert Tungaloy B199