【正文】
itional processing processing way. Compares with it, the highspeed cutting processing main axle rotational speed high, cuts high for the speed, the cutting quantity is small, but in the unit time material excises the quantity to increase 3 ~ 6 times actually. It take the high efficiency, the high accuracy and the high surface quality as the basic characteristic, in profession and so on in automobile industry, aerospace, mold manufacture and instrument measuring appliance has obtained the increasingly widespread application, and has obtained the significant technology economic efficiency, is the contemporary advanced manufacture technology important constituent. When with traditional way processing mold, often uses the electric spark machining, but the electrode design and makes itself is the technological process which timeconsuming takes the trouble. But after uses the highspeed cutting processing, because the narrow and small region processing realization and the high grade superficial result, let the electrode the utilization ratio reduce greatly. Moreover, makes the electrode with the high speed mill also to be possible to make the production efficiency to enhance to a new scale. The major part mold may use the highspeed cutting technology to process, like the forging die, the pression casting mold, cast with the blow molding mold and so on. Hammers the cavity body shallowly, the cutting tool life is long。s processing method the electric spark machining, simplified the processing craft and the cost of investment. the mold39。 (4) the cutting tool and the work piece maintain at the cold condition。s each kind of mercialization high speed engine bed already entered the market, applies in the airplane, the automobile and the die making. Along with the highspeed cutting process technology introduction mold industry, has had the very tremendous influence to the traditional mold processing craft, changed the mold processing technical process. Because the mold profile is the very plex free surface generally, and degree of hardness is very high, uses conventional the machining method to satisfy the precision and the shape request with difficulty. The conventional processing method is after the annealing carries on the milling processing, then carries on the heat treatment, the grinding or the electric spark machining, finally the manual polish, polishing, cause the processing cycle to be very long like this. Specially the manual process period, must account for the entire processing cycle to be very big a part. HSC may achieve the accuracy requirement which the mold processes, reduced has even cancelled the manual processing, because and new cutting tool material (for example PCD, PCBN, cermet and so on) the appearance, HSC may the work hardness achieve HRC60, even degree of hardness higher work piece material, after might process hard mold, substitution electric spark machining and abrasive machining. The high speed milling processing has the highly effective high accuracy in the die making as well as may process the high hard material the merit, already obtained the widespread application in the industrially advanced country. The highspeed cutting process technology introduction mold industry, mainly applies in the following several aspects: 1) hard mold die space direct processing. After using the highspeed cutting to be possible to process the hard material the characteristic direct processing hard mold die space, improved the quality which and the efficiency the mold processes, may substitute for the electric spark machining. (2) EDM (electric spark) electrode processing. Applied the highspeed cutting technology processing electrode to raise the electric spark machining efficiency to play the very major role. The highspeed cutting electrode improved electrode39。它能改善模具的尺寸、形狀和表面粗糙度,減少甚至省去手工修磨,從而降低生產(chǎn)成本和縮短制造周期。模具是工業(yè)生產(chǎn)中最基礎(chǔ)的設(shè)備,是實(shí)現(xiàn)少切削和無切削的不可缺少的工具。 高速切削加工是面向 21 世紀(jì)的一項(xiàng)高新技術(shù),它是一種不同于傳統(tǒng)加工的加工方式。 2 高速切削加工模具相對(duì)傳統(tǒng)加工模具的優(yōu)勢(shì) 提高生產(chǎn)率 高速切削中主軸轉(zhuǎn)速和進(jìn)給速度的提高,可提高材料去除率。 和常規(guī)切削相比,高速切削加工時(shí)切削力至少可降低 30%,這對(duì)于加工剛性較差的零件來說可減少加工變形,使一些薄壁類精細(xì)工件的切削加工 成為可能。 絕大部分模具均可利用高速切削技術(shù)來加工,如鍛模、壓鑄模、注塑與吹塑模等。因此如同數(shù)控技術(shù)一樣 ,高速切削和高速加工已成為 21 世紀(jì)機(jī)械制造業(yè)一場(chǎng)影響深遠(yuǎn)的技術(shù)革命。目前中國模具市場(chǎng)需求已達(dá) 500 億元的規(guī)模,我國模具制造市場(chǎng)潛力巨大。目前,采用高速切削生產(chǎn)模具已經(jīng)成為模具制造的大趨勢(shì)。s quality, reduced the process period. 4 Highspeed cutting process technology in die making application The highspeed cutting process technology has a series of characteristics and the production benefit aspect39。 (2) may maintain the scrap size constant。s processing is also a highspeed cutting major characteristic, at present, the highspeed cutting has been possible the work hardness to reach HRC60 the ponents, therefore, the highspeed cutting can process after the heat treatment hardens the work piece. In the tradition processes in mold39。s path is not the simple translation, but is the curve, even has right angle corner time, technological parameter rational especially important, if because wants to maintain the identical feed rate carries on the orthogonal cutting, will not be able to do well will cause as a result of the engine bed moving part39。附錄 附錄 1 英文原文: Highspeed cutting processing in mold manufacture application . Nuttall *, G. Lodewijks Abstract The current mold application is widespread, also had the very big development with it related die making technology. At present, used the highspeed cutting production mold already to bee the die making the general trend. In some mold Manufacturer, the high speed engine bed big area substitution electrical discharge machine, the highspeed cutting production mold already gradually became the die making the general trend. It can improve mold39。 Has is after again the rapid traverse, trades fast the knife, the main axle tra