Основной каталог Kyocera 2021 - 2022 - страница 833

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Навигация

Lead angle 0°/ 2°Lead angle 0°/ 2°Lead angle 0°/ 2° MEC/MECXMEC/MECX

Ramping, helical milling and vertical milling (Plunging)

Ramping/Helical milling Vertical milling (Plunging)

Ramping angle is recommended under RMPX.Cutting dia.Applicable insertsMax. ramping angle (RMPX)Cutting dia.Applicable insertsMax. width of cut (ae)
Refer to each tool’s cutting performance list for sinking depthø16~ø183°
per revolution when helical milling.ø19~ø215°BDMT11T3 type
ø16 ~ ø191.5 mm
Use compressed air when during machining.BDGT11T3 type
ø22~ø25BDMT11T3 type2.5°
ø28~ø32BDGT11T3 type1.5°
ø400.7°BDMT11T3 type
ø20 ~ ø1605 mm
ø50 and overNot recommendedBDGT11T3 type
ø258°
ø32BDMT1704 type5°
BDMT1704 type
ø40BDGT1704 type2.5°ø25 ~ ø1608 mm

BDGT1704 type ø50 and over Not recommended RMPX BDMT1103 type is not recommended for ramping and helical milling. BDMT1103 type is not recommended for vertical milling (plunging).

Guidance of minimum cutting dia. by helical milling

MECCutting dia.ø16ø18ø20ø22ø25ø28ø30ø32ø50 ø40
Guidance of minimum cutting dia.øøøøøøøøø
by helical milling212529333945495369
BD_T11T3Helical milling is
typeGuidance of minimum cutting dia.not recommended.
in case of flatting bottom after helical milling.ø28ø32ø36ø40ø46ø52ø56ø60ø76
MECCutting dia.ø25ø32ø40ø50
Guidance of minimum cutting dia.ø34ø48ø64
BD_T1704by helical millingHelical milling is
typeGuidance of minimum cutting dia.not recommended.
in case of flatting bottom after helical milling.ø46ø60ø76

Case studies RC55 (Pre-hardened Tool Steel) SS400

  • Test piece (54~56HRC)
  • Plate
  • Vc = 50 m/min (n = 800 min-1)
  • Vc = 88 m/min (n = 1,400min-1) M
  • ap x ae = 2 x 14 mm
  • ap = 5 mm x 2 passes
  • fz = 0.125 mm/t (Vf = 300 mm/min)
  • fz = 0.12 mm/t (Vf = 500 mm/min)
  • Dry
  • Dry
  • MEC20-S20-11T
  • MEC20-S20-11T
  • 3 flutes
  • 3 flutes 1,800
  • BDMT11T308ER-JT
  • BDMT11T308ER-JT

(PR830) (PR830)

MEC Chip removal amount =71.3cm3 (Further machining possible) MEC 23 pcs/edge

Competitor's end mill A Chip removal amount = 2.9 cm3 (Chipping occurred) Competitor's end mill B 10~11pcs/edge

Competitor's end mill A [ø25 (2 flutes) Vc = 40 m/min fz = 0.075 mm/t ap x ae = 2 x 3 mm] had chipping occurred in 10 minutes and had loud machining MEC extended the tool life for more than twice. sound. MEC could increase the feed rate, and the cutting edge remained in extremely good condition and is still sustainable for further machining. (User evaluation) (User evaluation) SUS304 DAC10 (Hot work tool steel)

  • Plate 220
  • Mold
  • Vc = 125 m/min (n = 1,600 min-1) 90 40 90
  • Vc = 130 m/min (n = 1,040 min-1)
  • ap = 9.0 mm
  • ap × ae =(~3)×(~5)

fz = 0.1 mm/t (Vf = 320 mm/min) (Varies depending on machining point) φ50

  • Dry
  • fz = 0.18 mm/t (Vf = 936 mm/min) 58

68

  • MEC25-25-17
  • Dry (Air blow) 4
  • 2 flutes Removed portion (4 locations)
  • MEC40-S32-11T
  • 5 flutes
  • BDMT170408ER-JT
  • BDMT11T308ER-JT
(PR830)(PR830)58
68
MEC4pcs/edge or moreMEC2 hours (Small wear: extendible)
Competitor's end mill C1pc/edge or lessCompetitor's end mill D2 hours (Halted due to insert breakage)
Competitor's end mill C (indexable end mill) had high cutting force and had insert breakage,MEC had better cutting performance/insert life comparing to competitor's end mill D, and the insert had only small
but MEC had no insert breakage and was still usable for further machining after machiningwear and was usable for further machining after used for machining of the same duration as competitor's end mill D.

4 pieces (16 points). (User evaluation) Competitor's end mill D (6 flutes type) was used with Vf = 936 mm/min (fz = 0.15 mm/t). (User evaluation)

SCM420 Ni-base heat-resistant alloys

  • Knuckle Steering
  • Turbine parts
  • Vc = 150 m/min (n = 1,200 min-1)
  • Vc = 15 m/min (n = 120 min-1)
  • 160

ap = 0.5~5 mm(Shouldering) ap = 0.5 mm

  • fz = 0.1 mm/t (Vf = 478 mm/min) Machined portion
  • fz = 0.08 mm/t (Vf = 38 mm/min)
  • Dry
  • Wet
  • MEC40-S32-17
  • MEC040R-17-4T-M
  • 4 flutes
  • 4 flutes
  • BDMT170408ER-JT
  • BDMT170408ER-JS Machined portion

(PR830) (PR1025)

MEC 150 pcs/edge MEC 9pcs/edge

Competitor's end mill E 40pcs/edge Competitor's end mill F 1pc/edge or less

MEC had a better finished surface comparing to competitor's end mill E and also improved the tool life by more than 3 times. Competitor's end mill F (Coated carbide Insert) could not finish machining of 1 workpiece, but MEC could cut 9pcs/edge and the finished surface was good.