Основной каталог Kyocera 2021 - 2022 - страница 716

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Chipbreaker selection chart

P M K

(Carbon steel / Alloy steel) (Stainless steel) (Cast iron)

Low carbon steel, sticky materials

Medium to high carbon steel

Non heat treated Fracture resistance oriented or heat treated Cutting force Fracture resistance

oriented oriented

No interruption Interrupted

Low cutting force

For soft steelLow cutting forceGeneral purposeTough edgeLow cutting forceGeneral purposeTough edge
XM chipbreakerSM chipbreakerGM chipbreakerGH chipbreakerSM chipbreakerGM chipbreakerGH chipbreaker

KK Entangled chips Breakage

For soft steel Tough edge XM chipbreaker GH chipbreaker

Case studies

Housing SCM420Nipple S20CF
Vc = 125 m/min (n = 1,660 min-1)Vc = 230 m/min (n = 3,330 min-1)
f = 0.08 mm/rev (Vf = 133 mm/min)f = 0.13 mm/rev (Vf = 433 mm/min)
Drilling depth 45 mmDrilling depth 60 mm (4D)
Wet (External coolant)30 mm (2D)
S25-DRV240M-4-07Wet (Internal coolant)Process 2Process 1
SCMT070310GM-I PR1535S25-DRV220M-4-06 (4D)Drilling Depth 30 mmDrilling Depth 60 mm
SCMT070305GM-E PR1225S25-DRV220M-2-06 (2D)(2D)(4D)
SCMT060210-GM- I PR1535
SCMT060205-GM-E PR1225
Cutting time50% Cutting time40

16 or more 12 %

DRV (ø24-4D) secDRV (ø22-4D/2D)sec
Cutting timeCutting time
3520
Competitor K ( ø24-4D)secCompetitor L ( ø22-4D/2D)sec

Chattering and chip biting occurred in low rigidity workpiece Chattering and deflection occurred with Competitor L. DRV of Competitor K. Speed was reduced to Vc = 60 m/min. showed stable machining and a shorter cutting time even when DRV finely divided chips for stable machining at Vc = 125 m/min. the cutting conditions were increased to 1.6 times or more. (User Evaluation) (User Evaluation)