(1) Die testing equipment is becoming more and more precise and efficient
With the development of machining precision, complex and large molds, the requirements for testing equipment are higher and higher. Now the precision of precision die has reached 2 ~ 3 μ m. At present, the domestic manufacturers use more high-precision CMM from Italy, the United States, Japan and other countries, and have digital scanning function. For example, Dongfeng Automobile Mould Factory not only has 3250mm made in Italy × The 3250mm CMM also has a digital photography optical scanner. It takes the lead in adopting digital photography and optical scanning as the means to obtain spatial three-dimensional information in China. Dongguan CNC processing plant has realized the whole process from measuring the real object → establishing the mathematical model → outputting the engineering drawing → mold manufacturing, and successfully realized the development and application of reverse engineering technology. The equipment in this regard also includes: the second generation high-speed scanner (cycle series2) of Renishaw company in the UK can realize the complementary advantages of laser probe and contact probe. The laser scanning accuracy is 0.05mm and the contact probe scanning accuracy is 0.02mm. In addition, the high-speed scanner manufactured by German company Lars atx-150 and the low-cost three-dimensional scanner manufactured by German company Lars atx-150 have the characteristics of the desktop scanner manufactured by German company Lars and the portable scanner manufactured by British company lars-150.
2) NC EDM machine tool
Machining aq325l and aq550lls-wedm driven by linear motor servo in Sadik company of Japan have the advantages of fast driving response, high transmission and positioning accuracy, small thermal deformation and so on. Ncedm of Swiss chamir company has p-e3 adaptive control, PCE energy control and automatic programming expert system. In addition, some EDM also adopts powder mixing processing technology, micro finishing pulse power supply and fuzzy control (FC) technology.
3) High speed milling machine (HSM)
Milling in Dongguan CNC machining plant is an important means of cavity mold machining. High speed milling has many advantages, such as low workpiece temperature rise, small cutting force, stable processing, good processing quality, high processing efficiency (5 ~ 10 times that of ordinary milling) and machinable hard materials (< 60HRC). Therefore, it is paid more and more attention in die processing. The positioning accuracy of ucp710 five axis linkage machining center of Swiss Krone can reach 8 μ m. The self-made motorized spindle with vector closed-loop control has a maximum speed of 42000r / min. The high-speed milling machine of rambaudi company in Italy has a processing range of 2500mm × 5000mm × 1800mm, the rotating speed reaches 20500r / min, and the cutting feed speed reaches 20m / min. HSM is generally mainly used for large and medium-sized mold processing, such as automobile panel mold, die-casting mold, large plastic and other surface processing, and its surface processing accuracy can reach 0.01mm