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本科畢業(yè)設計-設計“刀架”零件的機械加工工藝規(guī)程生產(chǎn)綱領:4000件(完整版)

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【正文】 1張機械加工工藝過程卡片 1份機械加工工序卡片 1套課程設計說明書 1份四、進度安排第一階段:繪制零件圖,工藝卡片(2天)第二階段:查閱資料,工藝方案比較,確定加工路線(2天)第三階段:確定各工序的加工余量和工序尺寸,計算各工序的切削用量和工時定額(3天)第四階段:整理說明書,填寫工藝卡片(3天)五、成績評定指導教師 簽名 日期 年 月 日系主任 審核 日期 年 月 日 請您刪除一下內容,O(∩_∩)O謝謝?。。any people have the same mixed feelings when planning a trip during Golden Week. With heaps of time, the sevenday Chinese請您刪除一下內容,O(∩_∩)O謝謝?。。ational Day holiday could be the best occasion to enjoy a destination. However, it can also be the easiest way to ruin how you feel about a place and you may bee more fatigued after the holiday, due to battling the large crowds. During peak season, a dream about a place can turn to nightmare without careful planning, especially if you travel with children and older people. As most Chinese people will take the holiday to visit domestic tourist destinations, crowds and busy traffic are inevitable at most places. Also to be expected are increasing transport and acmodation prices, with the possibility that there will be no rooms available. It is also mon that you39。但是在設計過程中所學到的東西是這次畢業(yè)設計的最大收獲和財富,使我終身受益。見《切削手冊》第三章中磨料選擇各表,結果為 平型砂輪,其尺寸為2502575(DdH)。由Z525鉆床說明書由就近原則取n=680r/min。32H7 (1)鉆孔φ15: F=~()由于 ,故應選孔深修正系數(shù),KT=則: f=(~)~按Z525立式鉆床機床說明書選取 f= V=13m/min(、) 按機床選?。?n=272r/min所以實際切削速度:切量以及超切量y+△=8mm ;L=l+y+△故切削工時為 (2)擴孔φ30 根據(jù)有關資料介紹,利用鉆頭進行擴鉆時,其進給量和切削速度與同樣的尺寸的實心孔時的進給量和切削速度的關系為: f=(~)f鉆 v=(1/2~1/3)v鉆式中:f鉆、v鉆加工實心孔時的切削用量。=100mm,故刀具的壽命T=180min() 5)決定切削速度vc和每分鐘進給量vf,當d。 故: (2) 精銑底面 1)根據(jù)《切削用量簡明手冊》(一下數(shù)據(jù)均來自此手冊)。由于采用標準硬質合金端銑刀,故齒數(shù)Z=5()。=5186。 內孔216。工序2:以底面作定位基準,銑側面。(二)基面的選擇基面的選擇是工藝規(guī)程計劃中的重要工作之一,基面選擇得正確合理,可以保證加工質量,提高生產(chǎn)效率,否則,就會使加工工藝過程問題百出。車削加工中心還可安裝軸向銑刀、徑向銑刀。這次綜合性的訓練,我在以下幾方面得到鍛煉:(1)提高結構設計能力。32H7 5(五) 確定切削用量及基本工時 6工序一:銑削底面 6工序二:銑兩側面 8工序三:銑削上平面,用圓柱銑刀加工4216。掌握與本設計有關的各種資料的名稱,出處,能夠做到熟練的運用。 以底面為中心的加工表面 這一組加工表面包括:銑削底面,與臺階面保留20mm的高度。精基準的選擇 精基準的選擇主要應該考慮基準重合的問題,當設計基準與工序基準不重合時,應進行尺寸換算。11工序4:以底面作定位基準,鉆、擴、鉸孔216。32H7由于本設計規(guī)定的零件為大批生產(chǎn),應該采用調整法加工,因此在計算最大、最小加工余量時,應按調整法加工方式予以確定,現(xiàn)制定表格如下:加工余量計算表加工尺寸工序鑄件毛坯 (Ф32兩端面,刀架底面)粗銑兩側面精銑兩端面粗銑底面精銑底面加工前尺寸最大64最小64加工后尺寸最大6560最小6560加工余量(單邊)2最大最?。?) 確定切削用量及基本工時 工序一:銑削底面 加工條件工件材料:HT200正火,σb=670Mpa,鑄造。rg== 計算切削用量 (1)粗銑底面 1)根據(jù)《切削用量簡明手冊》(以下數(shù)據(jù)均來自此手冊)。=100mm,故刀具的壽命T=180min() 5)決定切削速度vc和每分鐘進給量vf,當d。但已知銑削寬度為64mm,故應根據(jù)銑削寬度≤90mm,選擇d。=100mm,z=5,vf=150mm/min,近似為: Pcc=根據(jù)XA5032型立銑說明書(),機床主軸允許的功率為: Pcm==≥ (可采用)即:ap=,vf=150mm/min,n=600r/min,vc=,fz=。由《切削用量簡明手冊》=。計算鉆削加工工時:由《切削用量簡明手冊》+△的值為6mm。其中,工序機床的進給量,主軸轉速和切削速度需要計算并查手冊確定。二、主要內容,了解零件的結構特點和技術要求,對零件進行結構分析和工藝分析。wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of gorgeous colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white
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