become increasingly demanding。 Precision Mould precision now reached 2 ~ 3μm, m ore domestic manufacturers have to use Italy, the United States, Japan and other count ries in the high-precision coordinate measuring machine, and with digital scanning。 S uch 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 spa tial three-dimensional access to information, enabling the establishment from the mea surement of physical → model output of engineering drawings → → the whole proce ss of mold making, reverse engineering a successful technology development and appl ications。 This equipment include: second-generation British Renishaw high-speed sca nners (CYCLON SERIES2) can be realized and contact laser probe complementary pr obe, laser scanner accuracy of 0。05mm, scanning probe contact accuracy of 0。02 mm。 Another German company GOM ATOS portable scanners, Japan Roland's PIX-30, PI X-4 desktop scanner and the United Kingdom Taylor Hopson's TALYSCAN150 multi

-sensor, respectively Three-dimensional scanner with high speed, low-cost and functio nal composite and so on。

(2)CNC EDM

Japan Sodick linear motor servo drive using the company's AQ325L, AQ550LL S-WEDM have driven fast response, transmission and high positioning accuracy, the advantages of small thermal deformation。 Switzerland Chanmier company NCEDM w ith P-E3 adaptive control, PCE energy control and automatic programming expert syst ems。 Others also used the powder mixed EDM machining technology, micro-finishin g pulse power and fuzzy control (FC) technologies。

(3)high-speed milling machine (HSM)

Milling is an important means of cavity mold。 The low-temperature high-speed milling with the workpiece, cutting force is small, smooth processing, processing qua lity, processing efficiency (for the general milling process 5 to 10 times) and can proc ess hard materials (<60HRC) and many other advantages。 Thus in the mold processin

g more and more attention。 Ruishikelang company UCP710-type five-axis machining center, machine tool positioning accuracy up to 8μm, home-made closed-loop vector control spindle with a maximum speed 42000r/min。 Italy RAMBAUDI's high-speed milling, the processing range of up to 2500mm × 5000mm × 1800mm, speed up 2050 0r/min, cutting feed speed of 20m/min。 HSM generally used large, medium-sized mol d, such as motor cover mold, die casting mold, large plastic surface machining, the sur face precision up to 0。01mm。

rapid economic modeling techniques

Shorten the product development cycle is an effective means of market competi tion 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 three-dimensiona l laser lithography (SLA); laminated profile manufacturing (LOM); laser powder sinte ring prototyping (SLS); Fused Deposition Molding (FDM) and three-dimensional prin ting forming technology (3D-P) and so on。

(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 patt ern technology。

(3)Casting forming tooling。 There are bismuth tin alloy tooling, zinc alloy tooli ng, resin composite forming technology and silicon rubber mold molding technology。

(4)cold extrusion mold technology and ultra-molded shapes。 (5) multi-point for ming technology。

(6)KEVRON steel blanking blanking tooling。