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Three requirements of high efficiency and high quality mould for machine tools


Abstract: with the acceleration of consumer products, mold technology is also in constant development, the production efficiency and manufacturing quality of the mold is more and more high demand, so the electric spark machining mold low production efficiency and quality is gradually exposed to the shortcomings.
In order to realize the high speed machining of mould cavity and related parts, the machine tools need to have the following characteristics:
1 because the mold is developing to the direction of large-scale, a few tons to tens of tons of mold is very common, so that the machine tool work table can withstand the big weight, which requires equipment must have a large bearing and high rigidity, but also must be large enough to meet the table size and work schedule. The strength and hardness of the other die materials are very high, and it is often used to process the mould cavity of the small diameter end milling cutter with large elongation. In order to ensure the machining accuracy and surface quality of the parts, the high speed machine tool manufacturing of the mould must have very high dynamic and static rigidity, so as to improve the accuracy of the machine tool, the tracking precision and the anti vibration ability.
2 high speed and high speed machining is the development direction, high speed milling in the mold processing has shown great superiority. In order to adapt to the machining of the mold cavity surface, the radius of the tool should be less than the minimum radius of the cavity surface, so as to avoid the interference of the tool and the workpiece in machining process ". Due to the small diameter of the tool, therefore, the spindle speed is very high, the speed of foreign high-speed machining machine tool spindle speed has reached 40000 ~10 million r/min, fast feed rate of up to 30000 ~6 million min. Type cavity and other parts of the mold parts of the rough, finishing often in the workpiece clamping, so the main power to large, medium size mold milling machine and machining center spindle power is often 10~40kw, and some even higher.
3 to multi axis linkage and good deep hole cutting ability of the mold cavity for complex space six surface and groove, and many die with deep cavity. In order to achieve high precision, high speed and high stability of 3D surface, the machine tool needs multi axis linkage, and has good deep hole cutting ability. It can be used in five axis machining center, in addition to the three coordinates of the linear movement, there are two rotating coordinates of the feed motion. Milling head or working table can be multi axis linkage of continuous rotary feed, which is suitable for machining of mold parts with complex cavity surface.

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