WIDIA - Полный каталог инструмента - 2017
для размещения заказа - zakaz@widiahanita.ru
Radial
modified flank
angle of
infeed
Modied ank
modified flank
15–29 30'
angle of
infeed
Alternating ank
alternating flank
Technical Information
General Machining Guidelines
Reversed modied ank
modified flank
angle of
infeed
15–29 30'
Advantage —
• Cutting on both sides of the thread
form places all of the cutting edge
in the cut and protects edge from
chipping.
• Even wear on the insert.
Advantage —
• Tool cuts both sides of thread form,
so it is protected from chipping
similar to 0° infeed. Channel-type
chip develops, but uneven chip
thickness helps remove the chip
similar to flank infeed.
• This is the preferred method,
especially when used with a chip
control insert.
• Combined radial and/or alternating
flank infeed.
• Results in good tool life, with wear
evenly distributed over both flanks.
Advantage —
• Increased tool life because both
edges are used equally.
NOTE: Some machine tools may
require special programming
techniques to achieve this
method of infeed.
Advantage —
• Tool cuts both sides of thread form,
so it is protected from chipping
similar to 0° infeed. Channel-type
chip develops, but uneven chip
thickness helps remove the chip
similar to flank infeed.
• This is the preferred method,
especially when used with a chip
control insert.
• Combined radial and/or alternating
flank infeed.
• Results in good tool life, with wear
evenly distributed over both flanks.
• As chip flow is the reversed feed
direction, it is an excellent choice
for internal threading.
Disadvantage —
• Tool develops a channel chip that
may be difficult to handle.
• Tip chipping occurs when cutting
high-tensile materials.
• Bur condition is increased.
• Entire cutting edge is engaged at
finish of thread, causing increased
tendency to chatter.
Disadvantage —
• Similar disadvantages as with 0°
infeed, although reduced somewhat
in magnitude as cutting forces are
better equalised and chip flow is
much less of a problem.
Disadvantage —
• Difficult to cut on conventional
machinery.
Disadvantage —
• Programming needs to be done
line by line.
zakaz@widiahanita.ru
www.widiahanita.ru
F85