High-speed machining tool
High-speed machining tool is the most active
one of the important factors, it has a direct impact on the efficiency of
processing, manufacturing costs and product processing and accuracy.Cnc machining Tool in
high-speed processing to bear high temperature, high pressure, friction, shock
and vibration, such as loading, its hardness and wear-resistance, strength and
toughness, heat resistance, technology and economic performance of the basic
high-speed processing performance is the key One of the factors. High-speed
cutting tool technology development speed, the more applications such as
diamond (PCD), cubic boron nitride (CBN), ceramic knives, carbide coating, (C)
titanium nitride Carbide TIC (N) And so on. CBN has high hardness, abrasion resistance
and the extremely good thermal conductivity, and iron group elements between
the great inertia, in 1300 ℃ would not have
happened significant role in the chemical, also has a good stability. The
experiments show that with CBN cutting tool HRC35 ~ 67 hardness of hardened
steel can achieve very high speed. Ceramics have good wear resistance and
thermal chemical stability, its hardness, toughness below the CBN, can be used
for processing hardness of HRC <5 0 parts. Carbide Tool good wear
resistance, but the hardness than the low-CBN and ceramics. Coating technology
used knives, cutting tools can improve hardness and cutting the rate, for
cutting HRC40 ~ 50 in hardness between the workpiece. Can be used to
heat-resistant alloys, Titanium alloys, hightemperature alloy, Cnc machining cast iron, Chungang,
aluminum and composite materials of high-speed cutting Cut, the most widely
used. Precision machining non-ferrous metals or non-metallic materials, or the
choice of polycrystalline diamond Gang-coated tool.
High-speed
processing technology
High-speed cutting technology for high-speed
machining is the key. Cutting Methods misconduct, will increase wear tool to
less than high-speed processing purposes. Only high-speed machine tool and not
a good guide technology, high-speed machining equipment can not fully play its
role. In high-speed machining, should be chosen with milling, when the milling
cutter involvement with the workpiece chip thickness as the greatest, and then
gradually decreased. High-speed machining suitable for shallow depth of cut, cutting
depth of not more than 0.2 mm, to avoid the location of deviation tool to
ensure that the geometric precision machining parts. Ensure that the workpiece
on the cutting constant load, to get good processing quality.Cnc machining Cutting a single
high-speed milling path-cutting mode, try not to interrupt the process and
cutting tool path, reducing the involvement tool to cut the number to be
relatively stable cutting process. Tool to reduce the rapid change to, in other
words when the NC machine tools must cease immediately, or Jiangsu, and then
implement the next step. As the machine tool acceleration restrictions, easy to
cause a waste of time, and exigency stop or radical move would damage the
surface accuracy. In the mold of high-speed finishing, in each Cut, cut to the
workpiece, the feed should try to change the direction of a curve or arc
adapter, avoid a straight line adapter to maintain the smooth process of
cutting.
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