【正文】 e superiority Enhances the productivity In the highspeed cutting the main axle rotational speed and enters for the speed enhancement, ma y enhance material removing rate. At the same time, the highspeed cutting may process the hard ponents, a many Cmmponents attipe clamps may plete thick, half essence and the precision work and so on the plete working procedure, also may meet the ponents surface quality requirements directly to the plex profile processing, therefore, the highspeed cutting craft often may save the electric spark Machining, manually rub repairs and so on the working procedure, reduces the craft route, then enhances the processing productivity greatly. The highspeed cutting processing permission use big to feed rate, enhances 5~10 times pared to the convention machining, the unit interval/unit time material excision rate may enhance 3~6 times, the process period may reduce greatly. This may use in processing needs to excise the metal massively the ponents, specially has the very vital significance regarding the aviation industry. Improvement processing precishon and surface qualhty The high rpeed engine bed must have high performance and so on rigidity and high accuracy, at the same time because cutting force low, the work piece thermal deformation reduces, the cutting tool distorts slightly, the highspeed cutting processing precision Is very high. Depth of cut small, but enters for the speed quickly, the processing surface roughness is very small, cuts when the aluminum alloy may reach ~ , when cutting steel stock may reach ~ . Compares with the conventional cutting, when highspeed cutting processing the cutting force may reduce 30% at least, this may reduce the processing regarding the processing rigidity bad ponents to distort, causes some thin wall class fine work piece the machining into possible. Because revolves high speed time the cutting tool cuts the excitation frequency is far away from the craft system39。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 size and the shape precision. Therefore must omit as far as possible in the mold processing rubs manually repairs, improves the mold quality, reduces the production cost and the manufacturing cycle. Figure 3 is the traditional mold processing process: The semifinished materials rough machining semifinishing heat treatment hardens the electric spark machining precision work to rub manually repairs. Figure 4 is the high speed mold processing process: Hardened semifinished materials rough machining semifinishing precision work. the traditional mold processes process Figure 4 the high speed mold processes process in Figure 4, in the high speed mold machining process reduced two technological processes, probably reduces the process period 30%~50%. In the traditional processing craft39。 (2) may maintain the scrap size constant。 (6) may lengthen the cutting tool the life。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。s fast repair. The mold often needs to repair in the use process, lengthens the service life, in the past was mainly pletes depending on the electrical finishing, now uses the high speed processing to be possible to plete this work quickly, moreover might use the original NC procedure, did not need to establish. 5 Conclusion The highspeed cutting processing uses the high cutting velocity and the feed rate, the small radial direction and the axial depth of cut, the cutting force is small, the processing surface roughness is very small, cutting tool life enhancement。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)。文中還簡(jiǎn)要介紹了高速切 削加工在加工工藝方面的關(guān)鍵技術(shù)。目前中國(guó)模具市場(chǎng)需求已達(dá) 500 億元的規(guī)模，我國(guó)模具制造市場(chǎng)潛力巨大。 高速切削加工技術(shù)概述 顧名思義，高速切削，首先是高的速度，即要有高的主軸轉(zhuǎn)速，比如 12020r/min、18000r/min、 30000r/min、 40000r/min，甚至還有更高的轉(zhuǎn)速仍在試驗(yàn)中；另一方面，又應(yīng)有更大的進(jìn)給量，如 30000mm/min、 40000mm/min，甚至 60000mm/min；再有就是快速移動(dòng)、快速換刀、主軸換刀后從靜態(tài)到達(dá)其所需轉(zhuǎn)速的加速時(shí)間等等，只有達(dá)到了上述標(biāo)準(zhǔn)才能稱(chēng)之為高速。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。它以高效率、高精度和高表 面質(zhì)量為基本特征，在汽車(chē)工業(yè)、航空航天、模具制造和儀器儀表等行業(yè)中獲得了愈來(lái)愈廣泛的應(yīng)用，并已取得了重大的技術(shù)經(jīng)濟(jì)效益，是當(dāng)代先進(jìn)制造技術(shù)的重要組成部分。 絕大部分模具均可利用高速切削技術(shù)來(lái)加工，如鍛模、壓鑄模、注塑與吹塑模等。 高速切削加工允許使用較大的進(jìn)給率，比常規(guī)切削加工提高 5～ 10 倍，單位時(shí)間材料切除率 可提高 3～ 6 倍，加工時(shí)間可大大減少。 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(lái)說(shuō)可減少加工變形，使一些薄壁類(lèi)精細(xì)工件的切削加工 成為可能。 改善加工精度和表面質(zhì)量 高速機(jī)床必須具備高剛性和高精度等性能，同時(shí)由于切削力低，工件熱變形減少，刀具變形小，高速切削的加工精度很高。 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。而采用高速切削加工后，由于狹小區(qū)域加工的實(shí)現(xiàn)和高質(zhì)量的表面結(jié)果，讓電極的使用率大大降低。 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。 高速切削 (HSC)是近十年來(lái)迅速崛起的一項(xiàng)先進(jìn)制造技術(shù)。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(wú)切削的不可缺少的工具。模具作為重要的工藝裝備，在消費(fèi)品、電器電子、汽車(chē)、飛機(jī)制造等工業(yè)部門(mén)中占有舉足輕重的地位。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。 When research highspeed cutting processing, must unify closely with the highspeed cutting processing technology, realizes the high efficiency, the high accuracy truly and the redundant reliable goal. The highspeed cutting process technology is the advanced technique of manufacture, has the broad application prospect. Replaces EDM with the highspeed cutting processing (or majority of replaces) speeds up the mold development speed, realizes the craft update major step. The promoted application highspeed cutting process technology applies in the mold manufacturing industry, not only may enhance the machinefinishing large scale the efficiency, the quality, reduces the cost, moreover may lead a