【正文】 hotography, the space of threedimensional optical scanning as a means of information access, from the measurement of the physical 9 realization of the establishment of mathematical model, the output engineering drawings to the whole process of mold manufacturing, the successful implementation of the reverse engineering technology development and applications. Modern Mold Industry trends (1) Die CAD/CAE/CAM are integrated, threedimensional, intelligence and work direction. Die CAD/CAE/CAM technology is the mold design, manufacturing technology development direction of the detection of mold and the workpiece digitalization and integration of software functions mold, mold design, analysis and manufacture of threedimensional, and die industry, as well as reverse engineering tool for software applications work is the main trend. (2) to the precision mold manufacturing, high efficiency, plex and multidirection Precision CNC EDM machine electric spark forming machine tools, thread cutting and walking speed WEDM wire services) have been in the processing efficiency, accuracy and plex processing to achieve a breakthrough in electric discharge milling has been abroad for mold processing. (3) rapid economic modeling techniques are applied Rapid tooling, mainly from the following four areas to accelerate the speed of modeling: First, improve the processing speed (such as highspeed mirror cut)。 will add a layer of shell enhanced bush, you can Add a template, that is, forming an effective ponent. The advantages of electroforming method is that it can accurately reproduce the surface (even the deep narrow cavity can also be pleted copy) and its dimensional accuracy, and a model can be used to create a number of the same cavity. Its shortings are more timeconsuming, high cost. Rapid prototyping and rapid tooling (RP / RT) Technology Rapid prototyping method is based on the principle of dispersion and accumulation of manufacturing technology. CAD model of parts of it by way of a certain discrete and bee discrete machinable surface, discrete lines and discrete points, then the use of physical or chemical means, the face of these discrete, and the point segments formed by the accumulation of the overall shape of parts, the specific The method is: based on threedimensional CAD model of parts, after the format 8 conversion of its layered slices, the crosssection outline of the shape of each floor, and then use a laser beam selectively curing a layer of liquid photosensitive resin, or cutting a layer of layer of paper or metal foil, or layers of sintered powder materials, as well as the source of the selective use of jet injection layers of the Mongolian hotmelt binding agents or materials, forming the outline of the shape of the crosssection, and then gradually into a threedimensional stacking threedimensional parts. Die Surface Treatment Technology The main trends are: the infiltration of a single element to the multielement codiffusion, plex permeability (such as the TD method) development。 die life high. cumulative mold processing method Law of cumulative mold parts processing refers to the shape is continuously added by a certain instruction materials, have been accumulated, including spraying, electroforming, laser processing, such as rapid prototyping and manufacturing processes. Metal Spraying At high temperature and low temperature metal spraying, can be used for smallscale experimental mold. Hightemperature coating (to be added to the 7 oxygencurable metal acetylene flame in the melt), low temperature spray (low melting point alloy to spray release, in the electric ponents under the melting and spraying the surface of the model), the thickness of metal coating for the 1 3mm. When the coating after cooling down, the mother mold is removed from the model (model of at least 2 176。 material deformation resistance low, pared with the cold extrusion can reduce the extrusion pressure of about onetenth of a few。s Deleam series software includes surface / solid geometry modeling, plex physical engineering graphics, industrial design of highlevel rendering, plastic mold design expert system, the plexity of physical CAM, modeling and carving art automatic programming system, reverse engineering system and Online measurement of plex physical systems. (2) mold design, analysis and manufacture of threedimensional Mold design, analysis, manufacturing threedimensional and require a new gener