Features of mold high speed milling machining center
Features of mold high speed milling machining center
I. Large load bearing and high rigidity
This is because the mold is developing towards large scale, the processing equipment must have a large enough table size and working stroke to adapt to it.
Now, a few tons to dozens of tons of mold is very common, requiring the machine table to be able to bear large weight.
The strength and hardness of the die material are very high, and the die cavity is often processed with a small diameter end milling cutter with large elongation, so the machining process is prone to flutter.
In order to ensure the machining precision and surface quality of the parts, the high-speed machine tools used in mold manufacturing must have high dynamic and static rigidity, so as to improve the positioning accuracy, tracking accuracy and anti-vibration ability of the machine tools.
High speed and power
High speed machining is the development direction. High speed milling has shown great advantages in die machining.
In order to adapt to the mold cavity surface processing, the radius of the tool should be less than the minimum radius of the cavity surface circumference, in order to avoid the process of the tool and workpiece "interference".
Due to the small diameter of the tool, the spindle speed is required to be very high. The spindle speed of foreign high-speed machine tools has reached 40,000 ~100 000r/min, and the fast feed speed can reach 30 000~60 000min.
Cavity and mold parts and other parts of the rough, finishing is often completed in the workpiece clamping, so the spindle power to large, medium size mold milling machine and machining center spindle power is often 10~40kW, and some even higher.
Three, can multi-axis linkage and good deep hole cavity comprehensive cutting ability
Mold cavity is composed of complex space 6 surface and groove, and many molds have deep cavity.
In order to achieve high precision, high speed and high stability of 3D surface machining, the machine tool needs multi-axis linkage and has good comprehensive cutting ability of deep hole cavity.
Five-axis linkage machining center can be used, in addition to the linear motion of three coordinates, there are two rotation coordinates of the feed motion.
The milling head or working table can carry out continuous rotary feed with multi-axis linkage, so it is suitable for machining mold parts with complex cavity surface.
Composite machining is one of the developing directions of die machining.
While machining center has many compound machining process can be implemented on a machine tool, but it is still not completely adapt to mould processing, mechanical processing and electrical, chemical, ultrasonic principle of different processing methods, such as composite, with two or more process characteristics of the composite processing in the mould manufacturing will have broad prospects in the future.
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