【正文】
finish machining. The machine tool choosing sufficient highspeed39。s processes a machine tool Mould finish machining and hard cutting treating require that the numerical control highspeed machine tool, form board, model put up the precision processing need,higheffect numerical control machine tool mould aiming at produces a lot of machine tool enterprise, some treating centres 60% all above of the machine tool producing a factory sells enterprise to a mould. The fixed assets having 5 billion yuan without exception in the uping several years throws into mould industry, 80% is the machine tool buying a mould process equipment, just saying every year having 4 billion yuan of RMB to buy Jinqie among them. At present average our country numerical control machine tool utilization ratio approximately 20%, the highspeed machine tool utilization ratio 3~5%. Also, mould enterprise has the unit suitable to buy a highspeed machine tool, plies with 6000 ~40000 rmp39。 2) quickcutting diminutions cut a force。 結(jié)束語 模具市場對高速加工有強烈 要 求,但是技術(shù)跟不上。高速切削 CAM 軟件: Delcam 公司 幾年前就幵始了高速切削加工編程技術(shù)的研究,開發(fā)了高速切削 自 動編程軟件模塊 ; 最近 , MasterCAM 公司 也 開 發(fā)了高速切削 自 動編程軟件模塊;國內(nèi)北航海爾也在開發(fā)高速切 削 自 動編程軟件模塊; 六、高速機床數(shù)控系統(tǒng)的特點 1)高速數(shù)據(jù)處理 2)拐角預測處理 3) NURBS 非有理樣條插補 曲 線加工 七、高速切削模具的安全問題 1)刀具磨損和破壞的監(jiān)測; 2)刀片連接的強度; 3)和普通機床加工不同,安全防護和 開 機前對機床和刀具的嚴格檢查 非常重要。注意刀具裝夾后的整體動平衡; 4.當前的刀具企業(yè)在解決高速切削刀具技術(shù)方面已經(jīng)做了很多工作,面 向 加工的刀具服務會幫助解決很多問題,刀具生產(chǎn)廠家成為主體,參考刀具生產(chǎn)廠家提供的技術(shù)參數(shù)。 一般來說 ,刀具以及刀 架 振動 的加速度達到 3g 以上,刀具的 徑向 跳動要小于,而刀的長度不能 大 于 4 倍的刀具直徑。 三、高速切削模具的刀具技術(shù) 高速切削加工還需配備適宜高速切削的刀具。缺點是加工成 本 高,對刀具的使用有較高的要求,不能使用過大的刀具, 要有 復雜的計算機編程技術(shù)做支持,設備運行成 本 高。每年進 口 模具超過 10 億美元。我國模具制造市場潛力巨大。 畢業(yè)設計 (論文 )外文資料翻譯 學 院 : 機械工程 專 業(yè): 機械設計制造及其自動化 姓 名: 學 號: 3082108330 外文出處: Lecture Notes in Computer science ( 用外文寫 ) 附 件: ; 。 根據(jù) 資料統(tǒng) 計 ,近年來,我國模具的年總產(chǎn)值達到 30 億美元,進 口 超過 10 億美元,出 口 超過 1 億美元。出 口 超過 1億美元 , 精密模具精度要求在 2~3u m, 大 型模具需要滿足 8000kN 合模力注塑機的要求 ; 小型模具需滿足直徑 1mm 塑料管的要求。 二、加工模具的高速加工機床 模具精加 工 和硬切削加工 需要數(shù)控 高 速機床,模板、模架加 工 需要精密、高效數(shù)控機床等。高速加工刀具材料的進展促使了高速加工 的發(fā)展。根據(jù) SANDVIK 公司 的實際統(tǒng)計 ,在使用碳氮化鈦 (TICN)涂層的整體硬質(zhì)合金立銑刀 (58HRC)進行高速銑削時,粗加工 刀具線速度約為 100m/min,而精加 工 和超精加 工 時,其線速度超過了 280m/min.這樣對刀具的材料 (包括 硬度、韌性、紅硬性 )、刀具的形狀 (包拈排屑性能、表面精度、動平衡性等 )以及刀具壽命都 有 很高的要求。 四、提高高速切削模具效率的工藝技術(shù) 1) 刀具直徑和長度的選擇 2) HSM 和 EDM 的選擇 3) 干切削和潤滑冷卻 4) 進給選擇:通常進給量 銑刀直徑 10%,進給寬度 銑刀直徑 40%。 八、目前我國在采用高速加工模具技術(shù) 中 存在的問題 1)國產(chǎn)高速機床整體性能尚有差距,功能部件性能還不能滿足要求 。起步晚,基礎(chǔ)較差,整體技術(shù)水平不高,發(fā)展緩慢。 3)quickcutting heat major part generate heat from the cuttings entrainment,workpiece being short。s to have. 1 highspeed machine tool technology parameter demands Process centre chief axis highpower , high rotation rate, satisfied rude finish machining。s cuts mould finish machining stiffly. Delcam adopt mm diameter cutter to process the narrow slot, rotation rate 40000 rpm , mm depth, feed speed 30 m/min. 1 chooses the cutter parameter, the cutter waits if shouldering an anterior angle. The cutter requires that the ability processing request shock resistance tenacity more highly,requiring that heat resistance pounds than average is strong。 4) outline treating are kept waiting in level surface. Quickcutting CAM software: Several years ago will have started quickcutting processing programming technology research, the Delcam pany , has developed the quickcutting automation programming software module。 4) supporting technology and equipment are fairly inplete 2 cutters: 1) domestic cutter is not able to adapt to the quickcutting application , high speed cuts only entire treating especially stiffly. Entrance cutter price is high. The cutter technology is to affect quickcutting processing a key factor of mould. 2) supporting technologies are not enough to include hilt, online dynamic balance in plete set etc.. 3 high speed moulds process the technology and the experiment 1) Be short of the accumulation applying experience since high speed processes the mould history paratively shortly。 3) Be short of the quickcutting data base or the handbook, is still blank space at present。 You also are in in the homeland north navigation developing the quickcutting automation programming software module。 4 current cutter enterprise has already done many jobs in the field of the technology resolving the quickcutting cutter, serving facing the cutter processing may help to solve much problem, the cutter has produced a manufacturer being the main body, the reference cutter has produced the technology parameter that the manufacturer provides. Fou