【導讀】Withmoldponents,withhighefficiency,goodquality,lowcost,savingenergy. industrialeconomy.

　　

【正文】 , and multidirection (1) mold testing equipment more sophisticated, efficient Sophisticated, plex, largescale mold development, testing equipment have bee increasingly demanding. Precision Mould precision now reached 2 ~ 3μm, more domestic manufacturers have to use Italy, the United States, Japan and other countries in the highprecision coordinate measuring machine, and with digital scanning. Such as Dongfeng Motor Mould Factory not only has the capacity 3250mm 3250mm Italian coordinate measuring machine, also has a digital photography optical scanner, the first in the domestic use of digital photography, optical scanning as a means of spatial threedimensional access to information, enabling the establishment from the measurement of physical → model output of engineering drawings → → the whole process of mold making, reverse engineering a successful technology development and applications. This equipment include: secondgeneration British Renishaw highspeed scanners (CYCLON SERIES2) can be realized and contact laser probe plementary probe, laser scanner accuracy of , scanning probe contact accurac y of mm. Another German pany GOM ATOS portable scanners, Japan Roland39。s PIX30, PIX4 desktop scanner and the United Kingdom Taylor Hopson39。s TALYSCAN150 multisensor, respectively Threedimensional scanner with high speed, lowcost and functional posite and so on. (2) CNC EDM Japan Sodick linear motor servo drive using the pany39。s AQ325L, AQ550LLSWEDM have driven fast response, transmission and high positioning 15 accuracy, the advantages of small thermal deformation. Switzerland Chanmier pany NCEDM with PE3 adaptive control, PCE energy control and automatic programming expert systems. Others also used the powder mixed EDM machining technology, microfinishing pulse power and fuzzy control (FC) technologies. (3) highspeed milling machine (HSM) Milling is an important means of cavity mold. The lowtemperature highspeed milling with the workpiece, cutting force is small, smooth processing, processing quality, processing efficiency (for the general milling process 5 to 10 times) and can process hard materials (60HRC) and many other advantages. Thus in the mold processing more and more attention. Ruishikelang pany UCP710type fiveaxis machining center, machine tool positioning accuracy up to 8μm, homemade closedloop vector control spindle with a maximum speed 42020r/min. Italy RAMBAUDI39。s highspeed milling, the processing range of up to 2500mm 5000mm 1800mm, speed up 20500r/min, cutting feed speed of 20m/min. HSM generally used large, mediumsized mold, such as motor cover mold, die casting mold, large plastic surface machining, the surface precision up to . 4. 3 rapid economic modeling techniques Shorten the product development cycle is an effective means of market petition to win one. Compared with the traditional mold process, fast economic modeling technology is a short molding cycle, the characteristics of low cost, precision, and life can meet the production needs, overall economic efficiency is more significant in the mold manufacturing technology, specifically the following main technology. (1) rapid prototyping and manufacturing (RPM). It consists of threedimensional laser lithography (SLA)。 laminated profile manufacturing (LOM)。 laser powder sintering prototyping (SLS)。 Fused Deposition Molding (FDM) and threedimensional printing forming technology (3DP) and so on. 16 (2) the surface forming tooling. It refers to the use of spray, chemical corrosion, electroforming and new method for the formation of the cavity surface and a fine pattern technology. (3) Casting forming tooling. There are bismuth tin alloy tooling, zinc alloy tooling, resin posite forming technology and silicon rubber mold molding technology. (4) cold extrusion mold technology and ultramolded shapes. (5) multipoint forming technology. (6) KEVRON steel blanking blanking tooling. (7) mold blank rapid manufacturing technology. Mainly dry sand Mold Casting, Vacuum Mold Casting, Resin Sand Mold Casting Lost Wax Casting, and other technologies. (8) Other aspects of technology. Such as the use of nitrogen gas spring pressure side, discharge, quick die technology, stamping unit technology, and cutting edge technology and solid surfacing edge inserts die casting technology. mold materials and surface treatment technology developed rapidly Industry to the level of mold, material application is the key. Due to improper selection and use of materials, causing premature die failure, which acco unts for more than 45% failure die. In the mold material, monly used cold work tool steel with CrWMn, Cr12, Cr12MoV and W6Mo5Cr4V2, flame hardened steel (such as Japan, AUX2, SX105V (7CrSiMnMoV), etc.。 used a new type of hot work die steel American H13, Sweden QRO80M, QRO90SUPREME, etc.。 used a prehardened plastic mold steel (such as the . P20), agehardening steel (such as the . P21, Japan NAK55, etc.), heat treatment hardened steel (such as the United States, D2, Japan, PD613, PD555, Sweden wins the White 136, etc.), powder die steel (such as Japan KAD18 and KAS440), etc.。 panel drawing die used HT300, QT602, MoCr, MoV cast iron, largescale mold with HT250. more regular use of Precision Die Hard Steel Results YG20 and other alloys and carbide. in the mold surface treatment, the main trends are: the infiltration of a single 17 element to the multielement peration, plex permeability (such as TD method) development。 by the general diffusion to the CVD, PVD, PCVD, ion peration , the direction of ion implantation, etc.。 can use the coating are: TiC, TiN, TiCN, TiAlN, CrN, Cr7C3, W2C, etc., while heat from the air treatment means to the development of vacuum heat treatment. In addition, the current stre