【正文】 外形D1=5 D2=44T0404￠16mm的立銑刀1銑內(nèi)外花邊D1= D2=8 D3=11 D4=9 D5=5T0505￠6mm角度為45176。粗基準(zhǔn)的選擇原則：1）為了保證加工面與非加工面之間的位置要求，應(yīng)選非加工面為粗基準(zhǔn)；2）合理分配各加工余量；3）為了保證重要加工面的余量均勻，應(yīng)選擇重要加工面為粗基準(zhǔn)；4）粗基準(zhǔn)應(yīng)避免重復(fù)使用，在同一尺寸方向上，通常只允許用一次；5）選用粗基準(zhǔn)的表面應(yīng)平整光潔，要避開鍛造飛邊和鑄造澆冒口、分型面、毛刺等缺陷，以保證定位準(zhǔn)確、夾緊可靠。余量有工序余量和加工總余量（毛坯余量）之分。無論工件的形狀和機構(gòu)怎么不同，它們的六個自由度都可以用六個支承點限制，用合理分布的六個支承點限制工件六個自由度的法則，稱為六點定則。所以只要先粗銑后精銑就行。2） 已給出數(shù)學(xué)模型的空間曲面。（二） 在輪廓曲線上，沒有要進行間隙補償?shù)摹?小批量或成批生產(chǎn)十可考慮采用專用夾具，但應(yīng)盡量簡單。工件的裝夾方法有兩種：一種是工件直接裝夾在機床的工作臺或花盤上；另一種是工件裝夾在夾具上。切削液分水溶性切削液、油溶性切削液和固體潤滑劑。它是由機床提供的主要運動。關(guān)鍵詞：數(shù)控銑床、數(shù)控編程、工藝分析、公差A(yù)bstract：Modern CNC machine tool is integrated puter, automatic control, automatic detection and precision machinery, hightech products, is a typical electromechanical integration products, is pletely new type of automated machine tools. Along with the rapid development of science, mechanical properties, structure, shape and materials continue to improve, continuously improve precision, highvolume production by type (such as automobiles) to the production of small batch production into more. Therefore, the quality and accuracy of processing parts of the increasingly high demands. As products change frequently, in the general machining, and singleitem, small quantities of products accounting for about 70%. To effectively guarantee the quality of products, improve labor productivity and reduce costs, the proposed highprecision machine tools, has good versatility and greater flexibility to adapt to frequent changes in the production target with the needs of high automation requirements. CNC Milling Machine Milling is a fullfunction CNC machine tool. It can be milling, screw machining, drilling, and other functions on one piece of equipment so that it will have a variety of means. CNC milling machine used for processing can greatly improve the quality of products and ensure the accuracy of the processing ponents, reduce labor intensity for the new product development and modification and updating of saving a lot of time and costs and increase the petitiveness of their products.BE aim at in us this time, these student who will soon graduate have to do of graduations design, we want to do of the works is a lot want to understand number to control the foundation knowledge for process first, immediately after we want in understanding number to control the foundation of foundation knowledge for process the spare parts of[with] design to carry on processing the craft analysis to the graduation, including among them:The spare parts diagram,the spare parts drawing craft is analytical, the choice processes a contents, choose use of the number control the tool machine equipments, according to the spare parts diagram choice semifinished product(the semifinished product diagram), the assurance packs to clip a project, the assurance process in proper order and enter to the route(attach the diagram elucidation), choose knife to have, choose to slice to pare dosage, the number controls a drawup of process the craft card:The number controls to process knife to have card。我國經(jīng)濟全面與國際接軌，并逐步成為全球制造中心，我國企業(yè)廣泛應(yīng)用現(xiàn)代化數(shù)控技術(shù)參與國際競爭。 數(shù)控技術(shù)的廣泛應(yīng)用給傳統(tǒng)的制造業(yè)的生產(chǎn)方式，產(chǎn)品結(jié)構(gòu)帶來了深刻的變化。首先我們要了解數(shù)控加工的基礎(chǔ)知識，接著我們要在了解數(shù)控加工的基礎(chǔ)知識的基礎(chǔ)上對畢業(yè)設(shè)計的零件進行加工工藝分析，其中包括：零件圖、零件圖樣工藝分析，選擇加工內(nèi)容，選擇所使用的數(shù)控機床設(shè)備，根據(jù)零件圖選擇毛坯（毛坯圖），確定裝夾方案，確定加工順序及進給路線（附圖說明），選擇刀具，選擇切削用量，數(shù)控加工工藝卡片的擬定：數(shù)控加工刀具卡片；數(shù)控加工工藝卡片；數(shù)控加工工藝及裝備等。()切削加工必須具備的兩種運動在機床上為了切除工件上的多于的金屬，以獲得形狀精度、尺寸精度和表面質(zhì)量都符合要求的工件，刀具與工件之間必須作相對運動——切屑運動。改善材料切削加工性、合理選用切屑液、合理選用刀具幾何參數(shù)和切屑用量是提高切削質(zhì)量、效率和降低加工成本的重要措施。機床夾具分為通用夾具、專用夾具、可調(diào)夾具、組合夾具、拼裝夾具。 通用銑削夾具。工藝路線的設(shè)計（1）加工方法的選擇該零件由長方體面、螺紋及孔組成，該零件的尺寸的尺寸精度和表面粗糙度要求很高，該圖尺寸標(biāo)注完整，輪廓描述清楚。數(shù)控銑床在機床設(shè)備中應(yīng)用非常廣泛，它能夠進行平面銑削、外形輪廓銑削、三維及三維以上復(fù)雜型面銑削，還可進行鉆孔、鏜孔、螺紋切削等加工。根據(jù)工序的定義和對零件的分析，我把圖一分了七個工序，分別為：（1）銑上下平面 （2）銑外輪廓內(nèi)外形 （3）銑內(nèi)外花邊 （4）倒角C2 （5）鉆￠8的螺紋孔，然后攻M10H6的螺紋 （6）鉆￠30的孔（7）檢驗、入庫 圖二分了六個工序（1）銑上下平面 （2）銑四角 （3）銑長方形槽 （4）銑花邊槽 （5）鉆￠11mm的孔，絞￠12H7的孔 （6）檢驗、入庫 (附機械加工工藝過程卡)由參考資料【1】表1－12知：～25時，只需粗銑就行；～，需粗銑后再精銑；~，需粗銑后再精銑最后刮研；由參考資料【1】表1－11知：～，粗鏜或擴孔就行；~，需粗鏜（粗?jǐn)U）－半精鏜（精擴）；～，需粗鏜（粗?jǐn)U）－半精鏜（精擴）－精鏜（鉸）；～，需粗鏜（粗?jǐn)U）－半精鏜（精擴）－精鏜（鉸）；～，需粗鏜（粗?jǐn)U）－半精鏜（精擴）－精鏜－浮動鏜刀精鏜。“換刀點”是為數(shù)控車床、數(shù)控鉆鏜床、加工中心等多刀加工的機床編制程序時設(shè)定的，因為這些機床加工中途要更換刀具，其設(shè)定的位置要根據(jù)工序內(nèi)容而定。鉆孔時：，進給速度為150mm/min，所以轉(zhuǎn)速n為1500r/min。七、程序的編制FANUC系統(tǒng)編程（工件一）O0001 主程序名T1 ￠80mm,銑上下平面N5 G90G54G17G94G00X0Y0Z100 采用絕對值尺寸指令，直線偏移X,選用XY平面，采用每分鐘進給，刀具移至參考點N10 M03 S800 主軸以800r/min正轉(zhuǎn)N15 G00 X115 Z5 刀具快速定位N20 G01 Z2 F150 刀具以150mm/min進給速度沿Z軸直線插補N25 M98 P1000 調(diào)用子程序P1000N30 G00 X115 Z5 刀具快速定位N35 M03 S1200 主軸以1200r/min正轉(zhuǎn)N40 G01 F50 刀具以50mm/min進給速度沿Z軸直線插補N45 M98 P1000 調(diào)用子程序P1000N50 G00 X0 Y0 Z100 刀具快速移至參考點N55 M00 程序暫停手工裝卸，銑上平面N60 G90G54G17G94G00X0Y0Z100 采用絕對值尺寸指令，直線偏移X,選用XY平面，采用每分鐘進給，刀具移至參考點N65 M03 S800 主軸以800r/min正轉(zhuǎn)N70 G00 X115 Z5 刀具快速定位N75 G01 Z2 F150 刀具以150mm/min進給速度沿Z軸直線插補N80 M98 P1000 調(diào)用子程序P1000N85 G00 X115 Z5 刀具快速定位N90 M03 S1200 主軸以1200r/min正轉(zhuǎn)N95 G01 F50 刀具以50mm/min進給速度沿Z軸直線插補N100 M98 P1000 調(diào)用子程序P1000N105 G00 X0 Y0 Z100 刀具快速移至參考點N110 M00 程序暫停T2 ￠60mm,銑周邊N115 G90G54G17G94G00X0Y0Z100 采用絕對值尺寸指令，直線偏移X,選用XY平面，采用每分鐘進給，刀具移至參考點N120 M03 S800 主軸以800r/min正轉(zhuǎn)N125 G41 G00 X75 Z5 D1 取一號刀補左補償，刀具快速定位N130 G01 Z3 F150 刀具以150mm/min進給速度沿Z軸直線插補N135 M98 P2000 調(diào)用子程序P2000N140 M03 S1200 主軸以1200r/min正轉(zhuǎn)N145 G01 Z4 F50 刀具以50mm/min進給速度沿Z軸直線插補N150 M98 P2000 調(diào)用子程序P2000N155 G40 G00 X0 Y0 Z100 取消刀