外文翻譯---模具的發(fā)展趨勢(shì)-模具設(shè)計(jì)-全文預(yù)覽
【正文】 the negative pressure then to obtain the superficial bright and clean casting. (3) resins granulated substance solid casting Makes the molding sand using the resin granulated substance, makes the model with EPS or the PMMA foam plastics, under the normal temperature, the atmospheric pressure carries on the liquid metal casting but to make takes the casting. uses the solid casting the technical manufacture mold semifinished materials to have the size precision high (the ISO9 level), processing remainder small (generally about 5mm), does not need to pull out the mold ascent, does not need the making core and the sand core brace, saves the metal material, economical makes the wooden model the lumber, 9 the manufacture cycle short, the cost is low. This technology suits largescale, is plex, the single unit mold semifinished materials production. the ceramics fine cast, lose the cerotin to cast and so on the technology are increasing the mold semifinished materials precision, reduce the processing manhour, reduce the manufacture cycle, reduce aspect and so on cost also demonstrate its unique superiority. 7． other aspects technologies In order to simplify the mold the structural design, reduces the mold cost, reduces the mold manufacture cycle, in domestic and foreign also successively appeared some other aspects new technology application, like trades the mold frame, the ramming unit, the cutting edge builtup welding quickly, inlays the block casting, the nitrogen spring and so on. 。s AQ325L, AQ550LLSWEDM have driven fast response, transmission and high positioning 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 Psmold and Hitachi Shipbuilding of SpaceE/mold are professional injection mold 3D design software, interactive 3D cavity, core design, mold base design configuration and typical structure . Australian pany Moldflow realistic threedimensional flow simulation software MoldflowAdvisers been widely praised by users and applications. China Huazhong University of Science have developed similar software and Zhengzhou University, Zmold software. For manufacturing, knowledgebased intelligent software function 5 is a measure of die important sign of advanced and practical one. Such as injection molding experts Cimatron39。陶瓷型精鑄、失蠟精鑄等技術(shù)在提高模具毛坯精度、降低加工工時(shí)、縮短制造周期、降低成本等方面也顯示出其特有的優(yōu) 為了簡(jiǎn)化模具的結(jié)構(gòu)設(shè)計(jì)，降低模具成本，縮短模具制造周期，在國(guó)內(nèi)外也先后出現(xiàn)了一些其它方面新技術(shù)的應(yīng)用，如快換模架、沖壓?jiǎn)卧?、刃口堆焊、鑲塊鑄造、氮?dú)鈴椈傻? 外文原文 : Die
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