Mold is a widely used and widely used tool in the manufacturing industry. No cavity die, die, die casting, stamping die and deep, it is impossible to produce is widely used and has the competitive price of plastic parts, alloy castings, steel plates and forgings. In modern mass production, there is no high quality product without high level mold. It also plays an important role in improving production efficiency and reducing production cost. According to the latest statistics and analysis abroad, 75% of the metal parts rough processing, 50% of the finishing and 90% of the plastic parts are processed by mould. Therefore, the die industry is also known as the crown industry". Today, mold manufacturing has become an important part of advanced manufacturing technology. The material used for making dies is usually a kind of difficult to machine material. At present, the die cavity in our country is usually made of EDM. But the production efficiency of electrical processing is very low, no matter in the speed of mold development or the quality of mold manufacturing, it can not meet the requirements of modern mass production. The emergence of high-speed machining technology has opened up a new road for the die manufacturing technology. It is an inevitable trend to speed up the development of mould and improve the quality of mould manufacturing as long as possible to replace the electrical machining with high-speed machining. The main advantage of high-speed machining is that: Good quality products with high - speed cutting on cutting speed is about 10 times the speed of conventional cutting parts for high speed machining, residual blank material is not sufficient deformation was cut from the workpiece at the moment, the residual stress of the workpiece surface is very small; during cutting, the vast majority (more than 95% calories) is cutting away quickly, the thermal deformation of the workpiece; high speed machining process, the machine tool spindle at high speed (10000 80000 r/min) operation, the excitation frequency is far away from the natural frequency range of machine tool cutting system, machining process smoothly. Therefore, the machining accuracy of the parts is high, the surface quality is good, and the roughness can reach Ra, 0.6 mu m or more. After high-speed milling of the mold cavity, the surface quality can reach the level of grinding, so it can often save a lot of follow-up finishing process. The production efficiency is high - speed machining center or high-speed milling in mold, clamping a workpiece machining, finishing the cavity roughing and fine machining mould parts and other parts, the so-called "one-off" technology (One Pass Machining), the cutting speed is high, the efficiency of the process itself several times higher than the processing power to. In addition, it does not make electrodes, and often does not require subsequent manual grinding and polishing, and also easy to automate the processing process. Therefore, the application of high-speed machining technology makes the development speed of mold greatly improved. Development prospect: The processing precision of high speed machining, high surface quality, high production efficiency, the application effect in the mold industry is very good, the traditional technology of EDM can match, fully in line with the development direction of modern manufacturing technology of "high efficiency, high precision and high automation, has broad application prospects.
