WIDIA - Полный каталог инструмента - 2017
Separator™
Machining Guidelines
для размещения заказа - zakaz@widiahanita.ru
Denitions and Guidelines
1. Width of cut (W) = width of the insert.
2. Lead angle = 0° (neutral); 4°, 5°, 12°, 18° (RH or LH).
Reduce bur of cut-off faces:
• Use lead angle-type inserts (Figures 1 and 2). Lead
angle on a cut-off insert reduces the bur that remains
on the part but decreases tool life and increases tool
side deflection and possibly cycle time.
Figure 1
Insert selection left-hand lead
centre stub
(stock)
bur
(stock)
cut-off to centre
tube cut-off
Left-hand lead insert leaves centre stub or bur on part
and produces clean stock surface.
Figure 2
Insert selection right-hand lead
centre stub
bur
(stock)
(stock)
• If 0° lead angle is mandatory,
use the narrowest possible
cut-off insert and blade. This
will minimise the centre stub or
cut-off bur length. Decrease the
feed rate to maximum 0,05mm
or less at the point where
diameter equals insert width.
• On tubing-type parts that
require a chamfer on the I.D.,
align I.D. chamfer tool with cut-
off surface. This will enable the
chamfering operation to actually
separate the part from the bar
(see Figure 4). Note the part
may drop onto the chamfering
bar, which, in this case, will act
like a catcher for the part.
Figure 4
Internal chamfer line up
part
Improve surface nish of cut-off faces:
• Use insert with 0° lead angle.
• Increase coolant flow or improve application technique,
as shown in Figure 5.
• Decrease the feed rate near the break-through point of the cut.
• Check that the grooving tool is set at the correct angle.
• Use blades with the greatest possible face height and smallest
possible cutting width.
• Increase the speed.
part
cut-off to centre
tube cut-off
Right-hand lead insert leaves centre stub or bur on stock and
produces clean part surface.
• Check total height and maintain on centre with part diameter.
• The cutting edge height should be within ±.0,1mm to the
centre; recommended cutting position is 0,05mm above centre.
Figure 3
Above centre
max 0,10mm
(.004")
Figure 5
Preferred method for applying coolant
• Mount cut-off tool upside down. This enables gravity to remove
chips and avoid cutting the chips twice. Another benefit of
mounting the tool upside down is preventing chips from wedging
between the tool insert and the groove side walls, which galls the
side wall surfaces.
E130
zakaz@widiahanita.ru
www.widiahanita.ru