Die manufacturing processing technology is introduced

Mould manufacturing technology modernization is the foundation for the development of the mould industry. With the development of science and technology, computer technology, information technology, automation technology and other advanced technology are to the traditional manufacturing technology penetration, cross, integration, imposed transformation, the formation of advanced manufacturing technology. High speed milling of ordinary milling with low feed rate and large cutting parameter, and high speed milling, the use of the high feed rate and cutting parameters of small, high speed milling machining compared with ordinary milling has the following characteristics: a. Efficient and high speed milling spindle speed is commonly 15000 r/min to 40000 r/min, up to 100000 r/min. When cutting steel, the cutting speed is about 400 m/min, 5 ~ 10 times higher compared to a traditional milling processing; In the mold cavity with the traditional machining method ( Traditional milling, edm forming, etc. ) Compared the efficiency of 4 ~ 5 times. b。 High precision high speed milling machining precision generally is 10 microns, some even higher precision. c。 The surface of the high quality because of the high speed milling workpiece temperature small ( Is about 3 ° C) No metamorphic layer and micro cracks, surface thermal deformation is small. The best surface roughness Ra is less than 1 microns, reducing the workload of subsequent grinding and polishing. d。 Machinable high hard material can be 50 ~ 54 HRC steel milling, milling, the highest hardness can reach 60 HRC. In view of the high speed machining with the above advantages, so the high speed machining is widely used in the mould manufacturing, and gradually replacing part of grinding and electric processing. Edm milling electrical discharge milling ( Also known as the spark into machining) Is the significant development of edm technology, this is an alternative to traditional with formed electrode processing and new technology in mould cavity. Like CNC milling, edm milling processing of the workpiece by high speed rotating rod electrode two-dimensional or three-dimensional contour machining, without having to make complex and expensive molding electrode. Japanese mitsubishi company recently launched EDSCAN8E edm into machine, equipped with automatic electrode loss compensation system, CAD/CAM integrated system, on-line automatic measuring system and dynamic simulation system, reflects the current edm and into the level of the machine tool. Wire cutting technology at present, CNC wire cutting technology development level is quite high, function is perfect, the degree of automation has reached to the degree of unattended operation. A maximum cutting speed was 300 / min, the machining accuracy can reach + / - 1. 5 microns, processing surface roughness Ra0. 1 to 0. 2μm。 Diameter of 0. 03 ~ 0. 1 mm filament thread cutting technology development, can be realized in a concave and convex mold cutting is complete, and can be 0. 4 mm narrow groove and the radius of 0. 02 mm fillet cutting processing. Taper cutting technology has been able to more than 30 ° taper precision machining. Grinding and polishing processing technology of grinding and polishing processing because of high accuracy, good surface quality and low surface roughness value characteristics, widely used in precision mold processing. At present, the widely used precision mold manufacturing CNC forming grinder, CNC optical curve grinding machine, CNC continuous path jig grinding machine and automatic polishing machine and other advanced equipment and technology. CNC measuring product structure is complex, will inevitably lead to mold parts of complex shape. Traditional geometric detection methods have been unable to adapt to the mold production. Modern mold manufacturing three coordinate nc measuring machine has been widely used for mould parts of geometric measurement, mould processing process of detection means and made great progress. Three coordinate nc measuring machine in addition to high precision measure of complex curved surface data, its good temperature compensation device, reliable vibration-proof protection ability, strict dust control measures, and simple operation steps, that makes it possible to automation testing. The application of advanced mold manufacturing technology has changed the traditional molding technology mould quality depends on the human factors, is not easy to control the situation, make the mould quality depends on the physical and chemical factors, the overall level is easy to control, mould reappearance ability.