Longlife Four Flute Flat Head Ball Nose Milling Cutter Golden Color HRC55
Brand Name:KTS
Certification:ISO9001:2008
Model Number:FOUR FLUTE
Minimum Order Quantity:100 Pieces
Delivery Time:7-15 DAY
Payment Terms:L/C, T/T, Western Union
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Chengdu Sichuan China
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No. 1700, North Section of Tianfu Avenue, High-Tech Zone, Chengdu, Sichuan, China
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HRC55 Four Flute Flat Head Tungsten Carbide End Mill Golden Color HRC55
Clamping of milling cutter
The milling cutters used in machining centers mostly adopt the
spring clamp set clamping method, and are in a cantilever shape
when in use. During the milling process, sometimes the milling
cutter may gradually extend from the tool holder, so that it is
complete? Lost, so that the workpiece is scrapped. The reason is
generally due to the existence of the inner hole of the tool holder
and the outer diameter of the milling tool holder Oil film, caused
by insufficient clamping force. The milling cutters are usually
coated with anti-rust oil. If a non-aqueous cutting oil is used for
cutting, a mist of oil film will also be attached to the inner hole
of the tool holder. When the oil film is stored on the handle and
the tool holder, the tool holder is very It is difficult to firmly
clamp the shank, and the milling cutter is loose and lost during
processing. Therefore, before the milling cutter is clamped, the
milling cutter shank and the inner hole of the cutter clamp should
be cleaned with cleaning fluid, and then dried before clamping.
When the diameter of the milling cutter is large, even if the tool
holder and the tool holder are very clean, a tool loss accident may
occur. At this time, the tool holder with a flattening gap and the
corresponding side locking method should be selected.
Another problem that may occur after the milling cutter is clamped
is that the milling cutter is breaking at the port of the tool
holder during processing. The reason is generally that the tool
holder has been worn for a long time and the port portion of the
tool holder has been worn into a tapered shape. Replace with a new
tool holder.
Milling cutter vibration
Because there is a slight gap between the milling cutter and the
tool holder, the cutter may vibrate during processing. Vibration
will make the cutting edge of the milling cutter uneven in the
amount of cutting, and the cutting expansion will increase than the
original set value, affecting the machining accuracy and tool life.
However, when the width of the groove processed is small, the tool
can be purposely vibrated, and the required groove width can be
obtained by increasing the cutting and expanding amount, but in
this case, the maximum amplitude of the milling cutter should be
below 0.02mm, otherwise Perform stable cutting. In normal
machining, the smaller the vibration of the cutter, the better.
When tool vibration occurs, you should consider reducing the
cutting speed and feed speed. If both have reduced by 40% and there
is still a large vibration, you should consider reducing the amount
of knife eating.
If resonance occurs during processing, the reason may be that the
cutting speed is too high, the feed rate is just small, the tool is
not enough, the clamping force of the workpiece is not enough, and
the shape of the workpiece or the clamping method of the workpiece
should be accepted. Measures such as adjusting the amount of
cutting, adding the fragmentary rigidity of the tool, and
increasing the feed speed.
End cutting of milling cutter
In the CNC milling process of the cavity of the mold and other
workpieces, when the cut point is a concave part or a deep cavity,
the extension of the milling cutter needs to be increased. If a
long-edge milling cutter is used, due to the large deflection of
the tool, it is easy to cause vibration and cause tool breakage.
Therefore, in the machining process, if only the cutting edges with
similar tool ends are required to participate in the cutting, it is
best to choose a short-edge long-shank milling cutter with a longer
total tool length. When using a large-diameter milling cutter to
process a workpiece on a horizontal CNC machine tool, due to the
large deformation caused by the weight of the tool, more attention
should be paid to the title of superb end cutting. If you are using
a long-edge milling cutter, you need to significantly reduce the
cutting speed and feed speed.
Selection of cutting parameters
The choice of cutting speed mainly depends on the material of the
workpiece to be processed; the choice of feed speed mainly depends
on the material of the workpiece to be processed and the diameter
of the milling cutter. The tool samples of some foreign tool
manufacturers are accompanied by a table of tool cutting parameters
for reference. However, the choice of cutting parameters is also
affected by many factors such as machine tools, tool bits, the
shape of the workpiece to be processed, and clamping methods. The
cutting speed and feed speed should be adjusted according to the
actual situation.
When the tool life is the priority factor, the cutting speed and
feed speed can be appropriately reduced; when the chip removal from
the edge is not good, the cutting speed can be increased
appropriately.
Selection of cutting methods
Adopting down-milling is beneficial to defense blade cover and can
improve tool life. But there are two points to focus on:
① If you accept ordinary machine tool processing, you should try to
eliminate the gap of the feed mechanism;
② When the appearance of the workpiece is left with oxide film or
other hardened layer composed of casting and forging process, it is
advisable to adopt reverse milling.
Longlife Four Flute Flat Head Ball Nose Milling Cutter Golden Color HRC55
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