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Meet The Efficiency Of Mold Processing

- Jan 04, 2019 -

In order to better meet the efficiency of mold processing, the universal milling machine needs to have the following characteristics:

1. Since the mold is developing in the direction of large-scale, molds of several tons to several tens of tons are very common, so the machine table needs to bear a large weight, which requires the equipment to have large load-bearing and high rigidity characteristics, and must have enough The large table size and working stroke are compatible with each other. The strength and hardness of the other mold materials are very high, and the mold cavity is often processed by a small-diameter end mill with a large elongation, so that the process is prone to chattering. In order to ensure the machining accuracy and surface quality of the parts, the high-speed universal milling machine for mold manufacturing must have high dynamic and static stiffness to improve the positioning accuracy, tracking accuracy and vibration resistance of the machine.

2. High-speed and high-power high-speed machining is the development direction, and high-speed milling has shown great advantages in mold processing. In order to adapt to the machining of the cavity surface of the mold, the radius of the tool should be smaller than the minimum circumferential radius of the cavity surface, so as to avoid the "interference" between the tool and the workpiece during the machining process. Because the tool diameter is small, the spindle speed is very high, and the spindle speed of the foreign high-speed machining machine is required. It has reached 40,000 to 100,000 r/min, and the rapid feed rate can reach 30,000 to 60,000 min. The cavities and other parts of the mold parts are often finished in the workpiece one-time clamping, so the spindle power is large, and the spindle power of the medium-sized mold milling machine and machining center is often 10-40kw, and some even higher.

3, multi-axis linkage and good deep cavity comprehensive cutting ability Mold cavity is composed of complex space six curved surface and groove, and many molds have deep cavity. In order to achieve high precision, high speed and high stability processing of 3d curved surfaces, the machine tool needs multi-axis linkage and has a good deep hole cavity comprehensive cutting capability. A five-axis linkage machining center can be used, in addition to the linear motion of three coordinates, there are two feed motions of the rotation coordinates. The milling head or table can be used for multi-axis linkage for continuous rotary feed, which is suitable for machining mold parts with complex cavity surfaces. It can be said that composite processing is one of the development directions of mold processing.

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