【正文】 ponents. This time, the knife edge and the work piece contact duration was short, has avoided the sidewall distortion. highspeed cutting thin wall ponents change the part substitutes certain crafts, like electric spark machining, abrasive machining and so on High strength and the high degree of hardness39。s craft, before the precision work, hardens the work piece after the heat treatment to carry on the electric spark machining, may omit in the die making craft with the highspeed cutting processing substitution tradition cutting39。s size, the shape and the surface roughness are very important, if after processing the mold cannot meet the requirements the quality precision, needs the massive handworks to rub repairs the work, the handwork rubs repairs can obtain the good surface quality, but it will affect mold39。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 service life, the down milling and the up milling the cutting tool cuts into the work piece the process, as shown in Figure 5. the cutting tool cuts into the work piece the process hint b. Maintains constant metal removing rate The highspeed cutting processing is shallowly suitable for shallowly to cut the depth, the depth of cut should not surpass (ae/Ap), this is for avoids the cutting tool the position deviation, guarantees processes the mold the geometry precision. Maintains constant metal removing rate, guaranteed adds on the work piece the cutting load is constant, by obtains following several good processing effect: (1) may maintain constant cutting load。 (3) has the good hot shift。 (5) does not need skilled to operate for the quantity and the main axle rotational speed。 (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 method uses the profile milling, this processing way increased the cutting tool to cut into, to cut the work piece the number of times, has affected the work piece surface quality, has limited the engine bed and the cutting tool formidable function display. In the highspeed cutting processing, often uses the Z direction cutting continual plane. Uses step pitch which is smaller than the convention, thus reduces each tooth cutting elimination quantity, the improvement processing surface39。s great potential, already bees country petition research and so on Germany, US and Japan important areas of technology. Now, US, Germany, Japan, France, Switzerland, Italy produce the different specification39。s surface quality and the precision, reduced the following working process. 3) fast sample workpiece manufacture. Uses the highspeed cutting processing efficiency high characteristic, may use in processing the plastic and the aluminum alloy model. After the CAD design produces the 3D fullscale mockup fast, is higher than the fast prototype manufacture efficiency, the quality is good. (4) mold39。 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。s research development and the industrial production, already was the urgent matter. References [1] . Low, . Kyle, Grinding tool technology recent development, The Mechanical Engineers Association, London, 1986. Highspeed cutting and grinding tool manufacture [2] . Johnson, Highspeed cutting and grinding tool manufacture, Cambridge University Press, Cambridge, 1985. [3] , . Morris, D. Atack, new using of Cutting technology, Applied Physics 30 (1959) 1713–1724. [4] . Hunter, Grinding tool manufacture, Applied Mechanics 28 (1961) 611–617. [5] G. Lodewijks, Dynamics of Belt Systems, Thesis, Delft University of Technology, Delft, 1995. [6] . Gent, Highspeed cutting outline, Carl Hanser Verslag, 2020. 中文翻譯 高速切削加工在模具制造中的 新 應用 . Nuttall *, G. Lodewijks 摘要 當前模具應用廣泛，與之相關的模具制造技術也有了很大的發(fā)展。在一些模具生產廠家，高速機床大面積取代電火花機床，高速切削生產模具已經(jīng)逐漸成為模具制造的大趨勢。本文通過對傳統(tǒng)模具加工工藝和高速模具加工工藝的對比，闡述了高速切削加工的優(yōu)勢。 關鍵字 高速切削；磨具；磨具加工；加工技術 1 緒論 引言 隨著科技進步和工業(yè)的飛速發(fā)展，模具已經(jīng)成為當今工業(yè)生產中使用極為廣泛的主要工藝裝備。工業(yè)產品零件粗加工的 75%，精加工的 50%及塑料零件的 90%將由模具完成。模具是一種專用工具，用于成形 (型 )各種金屬或非金屬材料所需要零件的 形狀制品，這種專用工具統(tǒng)稱模具。模具已廣泛用于工業(yè)生產中的各個領域 ,如汽車、摩托車、家用電器、儀器、儀表、電子等 ,它們中 60%～ 80%的零件都需要模具來進行制造；高效大批量生產的塑料件、螺釘、螺母和墊圈等標準件也需要模具來生產；工程塑料、粉末冶金、橡膠、合金壓鑄、玻璃成型等更需要用模具來成型。 其次是要針對不同的加工對象、不同的硬度、不同的材質、不同的形狀來選擇相應合理的參數(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給速度進行直角切削，搞不好會由于機床運動部件的巨大慣性而導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，而導致切削刀變化使工件表面有切紋，由此使加工質量下降，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。由于高速切削技術具有切削效率高、加工質量高、能直接加工淬硬 鋼件和良好的經(jīng)濟性 ,使航空、模具、汽車、輕工和信息等行業(yè)的生產效率與制造質量顯著提高 ,并引起加工工藝及裝備相應的更新?lián)Q代。目前 ,適應 HSC 要求的高速加工中心和其他高速數(shù)控機床在發(fā)達國家已呈普及趨勢 ,我國近來也在加快發(fā)展。與之相比，高速切削加工主軸轉速高、切削進給速度高、切削量小，但單位時間內的材料切除量卻增加 3～ 6 倍。 用傳統(tǒng)方式加工模具時，常采用電火花加工，但電極的設計與制造本身是一個費時費力的工藝過程。另外，用高速銑來制造電極也可以使生產效率提高到一個新的檔次。鍛模腔體較淺，刀具壽命較長；壓鑄模尺寸適中 ，生產率較高；注塑與吹塑模一般尺寸較小，比較經(jīng)濟。同時，高速切削可加工淬硬零件，許多零件一次裝夾可完成粗、半精和精加工等全部工序，對復雜型面加工也可直接達到零件表面質量要求，因此，高速切削工藝往往可省卻電火花加工、手工磨修等工序，縮短工藝路線，進而大大提高加工生產率。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。切削深度較小，而進給速度較快，加工表面粗糙度很小，切削鋁合金時可達 ～ ，切削鋼件時可達 ～ 。 因為高速旋