【正文】 這樣可以用于加工需要大量切除金屬的零件，特別是對于航空工業(yè)具有十分重要的意義。 用傳統(tǒng)方式加工模具時，常采用電火花加工，但電極的設(shè)計與制造本身是一個費時費力的工藝過程。 其次是要針對不同的加工對象、不同的硬度、不同的材質(zhì)、不同的形狀來選擇相應(yīng)合理的參數(shù)，而不能一味地追求為高速而高速，特別是對于型腔加工，形狀復(fù)雜而刀具直徑又較小時，由于刀具的運動軌跡不是簡單的直線運動而是曲線，甚至有直角拐彎的時候 ，工藝參數(shù)的合理性就尤為重要，因為要想保持同一進(jìn)給速度進(jìn)行直角切削，搞不好會由于機床運動部件的巨大慣性而導(dǎo)致刀具做彎角運動時突然斷裂，而變速運動又會由于加速和減速等運動造成切削厚度的瞬間變化，而導(dǎo)致切削刀變化使工件表面有切紋，由此使加工質(zhì)量下降，所以，針對不同的加工對象，需要編程人員選擇合理的刀具運動軌跡，優(yōu)化切削參數(shù)；另一方面，根據(jù)需要選擇適合的切削速度，只有這樣才能真正發(fā)揮高速切削的長處。 關(guān)鍵字 高速切削；磨具；磨具加工；加工技術(shù) 1 緒論 引言 隨著科技進(jìn)步和工業(yè)的飛速發(fā)展，模具已經(jīng)成為當(dāng)今工業(yè)生產(chǎn)中使用極為廣泛的主要工藝裝備。 With the highspeed cutting processing way substitution tradition processing way processing mold, mi ght omit the electric spark machining and rub manually repairs, raised the productivity which the mold processed, reduced the production cost, reduced the processing cycle。 (7) can guarantee the good processing quality and so on. of the Feeds way Regarding has opens the mouth die space the region, feeds as far as possible from material outside, by realtime analysis material cutting condition. But regarding does not have the die space enclosed area, selects the screw feed method, cuts into the local region. d. As far as possible reduced cutting tool39。s electric spark machining forms the hardened level easily in the melting processing surface layer, degree of hardness may reach 1000Hv, brings the difficulty for the following machining and the abrasive machining. The electric spark machining also easy to cause the surface layer fatigue cracking and cutting tool39。s forced oscillation, has guaranteed the good processing condition. Because the cutting force is too small, cut the hot influence to be small, causes the cutting tool, the work piece distortion to be small, maintained the size accuracy, moreover also caused the friction between the cutting tool work piece changes is small, the cutting destruction level thinned, the residual stress was small, has realized the high accuracy, the low roughness processing. The reduced cutting produces quantity of heat Because the highspeed cutting processing is the shallow cutting, simultaneously the feed rate is very quick, the knife edge and the work piece contact length and the contact duration were short, reduced the knife edge and the work piece heat conduction, has avoided when the traditional processing met everywhere in the cutting tool and the work piece to have the big calorimetry shorting, guaranteed that the cutting tool worked under the temperature not high condition, lengthened cutting tool39。 The engineering plastics, the powder metallurgy, the rubber, the alloy pression casting, the glass formation and so on need to use the mold to take shape. Highspeed cutting process technology As the name suggests, the highspeed cutting, first is the high speed, namely must have the high spindle speed, for instance 12020r/min, 18000r/min, 30000r/min, 40000r/min, even also had a higher rotational speed still in the experiment。s contrast, elaborated the highspeed cutting processing superiority. In the article also briefly introduced the highspeed cutting processing in the processing craft aspect key technologies. Keywords Highspeed cutting Grinding tool Grinding tool processing Process technology 1 Introduction Introduction Along with the advance in technology and the industry swift development, the mold already became in the industrial production to use the extremely widespread main craft to equip now. The mold takes the important craft equipment, in Industry sectors and so on consumable, electric appliance electron, automobile, airplane manufacture holds the pivotal status. The manufactured products ponents rough machining 75%, the precision work 50% and the plastic parts 90% will plete by the mold. At present the Chinese mold market demand has reached 50,000,000,000 Yuan scales, our country die making market potential is huge. The mold is one kind of specialpurpose tool, uses in forming () each metal or the nonmetallic material needs the ponents the shape product, this kind of specialpurpose tool general designation mold. The mold is in the industrial production the most foundation equipment, is realizes the few cuttings and the noncutting essential tool. The mold has widely used in the industrial production each domain, like the automobile, the motorcycle, the domestic electric appliances, the instrument, the measuring appliance, the electron and so on, in them 60%~80% ponents need the mold to carry on the manufacture。 On the other hand, according to needs to choose the suitable cutting velocity, only then can display the highspeed cutting truly like the strong point. The highspeed cutting (HSC) is an advanced technique of manufacture which for the past ten years rapidly rises. Because the highspeed cutting technology has the cutting efficiency to be high, the processing quality high, can process the hard steel stock and the good efficiency directly, causes profession and so on aviation, mold, automobile, light industry and information production efficiencies and the manufacture quality obviously enhances, and causes the processing craft and the equipment corresponding renewal. Therefore is similar to the numerical control technology is the same, the highspeed cutting and the high speed processing have bee in the 21st century a machinebuilding industry influence profound technological revolution. At present, adapts the HSC request high speed machining center and other high speed numericallycontrolled machine tool has assumed the popularization tendency in the developed country, our country recently is also speeding up the development. The highspeed cutting processing is faces for the 21st century a high technology and new technology, it is one kind is different with the trad