1 the introduction
As the most important in modern advanced manufacturing technology, one of the common technology of high-speed machining technology represents the development direction of machining, and gradually become the mainstream of machining technology. The "high speed" in the high speed cutting is a relative concept, for different ways of processing and workpiece material, high speed cutting when the cutting speed is not the same. In general, high speed cutting the cutting speed is higher than conventional cutting speed more than 5 ~ 10 times. Due to the application of high speed cutting technology can significantly improve the machining efficiency and machining precision, reduce the cutting force, reducing cutting heat effect on the artifacts, implementation process intensification, etc., so has been in the aerospace, mould manufacturing, automobile manufacturing, precision machinery, and other fields is widely used, and achieved good economic benefit.
In the forming of modern mold manufacturing, due to the increasingly complex mold profile design, the increasing proportion of free-form surface, thus puts forward higher requirements on mould processing technology, which should not only ensure the manufacture of high precision and surface quality, and to pursue the processing surface is beautiful. Along with the continuously go deep into the research of high speed machining technology, especially in machine tools, CNC system, cutting tool system, CAD/CAM software under the impetus of the development of related technologies, such as high speed machining technology has been increasingly used in mold manufacturing and processing.
High speed machining technology has great influence on the mold processing technology, changed the traditional mould processing using the "annealing to the milling processing, heat treatment, grinding" or "edm - manual grinding, polishing" long and complicated process, such as high-speed cutting and even can be used all the original process. High speed machining technology can be applied to a hardened mold cavity direct treatment (especially for semi-finishing and finishing), in the EDM electrode processing, rapid sample manufacture, etc are also widely used. A large number of production practice showed that the application of high speed cutting technology can save about 80% of the manual grinding in mold after processing time, save the processing costs nearly 30%, mold surface machining precision can reach 1 microns, tool cutting efficiency can be doubled.