Каталог Sumitomo твердосплавные пластины - страница 14

Negative M Class Chipbreakers for Low Carbon and General Steel TurningFE / FB

P

Type Type

Steel

• The high performance FE type, which ensures stable chip control in a wide range of feed rate, has been added to the chipbreaker series for low carbon steel and general steel turning.
• Extensive product lines are available to meet various machining requirements.
• The positive insert chipbreaker FB type is also availabe.

B ■

■ Application Range

2.0 1.6 LU type

FB type

FE type

1.2

0.8

C FL

type 0.4

The arc-shaped main breaker ensures stable Cutting conditions: v = 200 m/min f = 0.4 mm/rev a = 0.2 mm Dry

c p chip control in a wide feed rate range. S Excellent chip control under low depth of cut and high feed rate condition The two step chipbreaker enables stable chip

control at a low feed rate of f = 0.1 mm/rev T The sub-breaker controls cutting chips in profiling. 1.40 0.70

V 20° FE type Conventional

(AC8025P) Cross-section of chipbreaker Application Example Application Example W

Work material: Gummy steel (SPHC440) Facing insert: CNMG120408N-FE (AC8025P) Work material: S53C ø20-100 External turning and facing Insert: DNMG150412N-FE (AC8025P)

Cutting conditions: v = 200 m/min. f = 0.15 mm/rev a = 0.2-0.5 mm Wet Cutting conditions: v = 180 m/min. f = 0.25 mm/rev (radius), 0.45mm/rev (straight section) a = 0.3 mm Wet

c p c p

Stable chip curling and breaking in facing of gummy steel Stable chip control even at a variable feed rate in shallow cutting

FE type (AC8025P)

Supports low feed machining

Smooth chipbreaker geometry with a high rake reduces cutting resistance.

The variable rake angle in nose radius makes effective strain on chips and improves the breaking performance

100 mm100 mm 100 mm100 mm

Cutting conditions: v = 352 m/min. f = 0.03-0.2 mm/rev a = 0.7 mm Wet

c p

Small chip curling and control

0.80 FB type Competitor

(T3000Z)

Cross-section of chipbreaker