Far Tools ML 700, Оригинальный перевод

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© FAR GROUP EUROPE
SHARPENING TOOLS
Note: The grinding head is the ideal tool for this operation. The grinding head may be
fitted with a green grinder (green silicon carbide) specially designed to sharpen carbide
tools
Metal carbides
(Cobalt, tungsten, titanium, boron combinations) These carbides that are obtained with
a special heat treatment called sintering, are used in the form of disks or “inserts”. The
latter are placed onto the tool body and attached by brazing using a special brazing
powder
LATHE TOOLS with metal carbide tabs
a, delivery angle.
. Characteristic angles: b, sharpening slope
(a+b+d=90°) d, cutting angle.
Angle values a and b
Metals and alloys to
be machined
/ Resistance R
kg/mm 2
Delivery
angle
a
Sharpening slope
t
Steel
up to 50 kg 6° 22 to 25°
50 to 60 kg 6° 18 to 20°
60 to 70 kg 6° 15 to 18°
70 to 80 kg 5° 12 to 15°
80 to 95 kg 5° 10 to 12°
Grey cast iron 6° 8 to 10°
Various bronzes 7° 5 to 6°
Aluminium 8° 25 to 30°
Chip breaker (Fig.2): When machining steel grades only, the tool cutting edge receives suitable
sharpening. The length l of the chip breaker varies according to the grade of steel and the pass
load:
For steel up to 50 kg/mm2.............. l= 3.5 mm
For steel of 55 to 75 kg/mm2.............. l= 3.0 mm
For steel of 80 to 95 kg/mm2.............. l= 2.5 mm
Remark. The depth or the height of the chip breaker does not vary, it is 0.5 mm (approximately).
Never heat the carbide and cool it regularly in water
Always pass the carbide plate support part over a fettling grinder.
WARNING: Always wear protective goggles while sharpening
114252-Manual-D-EN.indd 9 21/03/12 10:48:36