CNC milling processing
occupies a very important position in the machining
industry, so what are its characteristics, what types of parts are suitable for
CNC milling processing?
Suitable for CNC milling parts
1. Complex shape of machined parts
Compared with an ordinary milling machine, the CNC milling machine has the
characteristics of high machining accuracy, complex machining parts shape, and
wide machining range. According to the characteristics of CNC milling machine,
CNC milling machine processing content mainly has the following categories:
curve contour or surface and other complex structure: the plane curve contour of
the workpiece, that is, parts have inside and outside contour lines for complex
curves, processing surface parallel or perpendicular to the horizontal plane. The CNC milling process, generally only need to use three coordinate CNC milling
machines and two coordinate linkages to process.
The workpiece surface generally refers to the surface on which the points on
the surface change in three-dimensional space coordinates. It is usually
designed by mathematical models. In the process of processing, the milling
cutter and machining surface always maintain point contact. The machining of
surface parts generally uses a three coordinate numerical control milling
machine, which often needs the help of computer programming processing.
2, ordinary milling machine is difficult to process the workpiece
For size, line, and the number of detection, it is difficult to observe and
control the parts, ordinary milling machines for CNC milling machine processing,
should choose CNC milling machine processing.
3. Precision and accuracy
In ordinary milling machine processing, it is difficult to ensure the
workpiece size accuracy, shape accuracy and surface roughness should choose CNC
milling machine processing.
4. Parts with good consistency requirements:
In mass production, because of the NC milling machine itself positioning
accuracy and repeated positioning accuracy is high, can avoid ordinary milling
machine processing due to human factors caused by various errors, so the NC
milling machine is easy to ensure success. The consistency of batch parts
improves the processing accuracy and the quality is more stable.
CNC milling features
1. Be flexible
CNC milling machine and machining center for a variety of different
structures and shapes of the workpiece processing can be completed drilling,
boring, reaming, milling plane, milling inclined plane, milling groove, milling
surface (CAM), tapping, etc.
2. High machining accuracy
CNC milling machine and machining center with high machining accuracy, under
normal circumstances, can ensure the accuracy of the workpiece. In addition, CNC
processing also avoids the operator's error, the same batch of processing parts
with good size consistency greatly improves the quality of products.
3. High production efficiency
CNC milling machine and machining center have the functions of milling
machine, boring machine, and drilling machine, so that the working procedure is
highly concentrated, greatly improving the production efficiency and reducing
the workpiece clamping error. The spindle speed of the CNC milling machine is
realized continuously at variable speeds, which is beneficial to select the best
cutting quantity. CNC milling machines with fast forward, fast back, and fast
positioning functions can greatly reduce maneuver time.
Secondly, the CNC milling machine has the function of a milling machine,
boring machine, and drilling machine, so that the process is highly centralized
and greatly improves production efficiency. In addition, the spindle speed and
feed speed of CNC milling machines are continuously variable, so it is helpful
to select the best cutting amount
4. Can handle complex shapes
In addition to milling the surface of various parts that can be milled by
ordinary milling machines, it can also be milling the plane curve contour and
space surface contour that can not be milled by ordinary milling machines. This
is because CNC machine tools have multiple feed coordinates. Shaft linkage
5, reduce the labor intensity of the operator
CNC milling machine in accordance with the pre-programmed processing program
automatically completes parts processing. In addition to operating the keyboard,
loading and unloading tools, workpiece, and intermediate measurement and
observation of machine operation, the operator does not need to carry out heavy repetitive manual operation, greatly reducing the labor intensity.
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