WIDIA - Полный каталог инструмента - 2017
Technical Information
Threading
Partial Prole
для размещения заказа - zakaz@widiahanita.ru
Full Prole
Multi-Tooth Prole
Tooth prole with universal
prole shape:
• 55° or 60° without cutting edges
for the tooth tapers.
• Reduced inventory.
• For various pitches in a limited range.
• Preferably one time production.
• Major/minor diameters must be
accurately pre-turned.
Tooth prole with full prole shape
including tooth height:
• For bur-free, precise threads in the specified
pitch.
• General application.
• Machining allowance for outside/core diameter
around 0,1–0,15mm.
Multi-tooth full prole
generally with 2–3 teeth:
• Highly productive threading with
fewer passes and longer tool life.
• Requires a rigid setup and long thread
pass through.
• Minimum clearance width approximately
1.25 x E as per indexable insert
dimensions table.
Formulas
to nd
m/min
RPM
Metric Formula
given
D (mm)
RPM
D (mm)
m/min
m/min =
RPM =
formula
/xD
1000
m/min x 1000
Dx/
x RPM
Legend
m/min =
RPM =
D=
/=
metres per minute
revolutions per minute
part diameter
3.1416
Maximum Cutting Speeds
On older machines, cutting speed is often limited by the maximum
travel speed mm/min of the tool allowed by the machine.
Check your maximum speed with the following formulas:
metric formula: maximum cutting speed (m/min) =
part diameter (mm) x 3.14 x (1/pitch) x max mm/min
1000mm
Flank clearance
a =
a=
`=
_=
arctan (sin`/2) * tan(_))
side (flank) clearance
included angle of thread form
radial inclination angle
Thread
UN & ISO
BSW
TR
ACME
AMBUT
AMBUT
Angle
60
55
30
29
7
45
External
5.3
4.8
2.6
2.6
.6
4
Internal
8
7.3
4
3.9
.9
6
F86
zakaz@widiahanita.ru
www.widiahanita.ru