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2011[8] 張麗萍 主編。數(shù)控車操作技術(shù);安徽科學(xué)技術(shù)出版社。感謝我的家人對我大學(xué)三年學(xué)習(xí)的默默支持;感謝我的母校給了我在大學(xué)三年深造的機會,讓我能繼續(xù)學(xué)習(xí)和提高。這次設(shè)計畫圖方面有了很大的提高,用的軟件有CAD、Pro/E、數(shù)控仿真系統(tǒng)、ps圖片處理等軟件。這種方法在適當(dāng)?shù)胤郊幼映绦蚝芊奖恪?30mm110080自動11切槽6mmT044206001201自動12精車外螺紋M803mm600自動產(chǎn)品名稱和代號數(shù)控車工工藝分析案例零件名稱零件圖號序號刀具號刀具名稱材料直徑mm數(shù)量刀具半徑mm備注1T01麻花鉆90186。5自動4鉆通孔T01248。粗鏜鋼件孔時Kr=60186。20mm, 248。槽形和牌號推薦值直徑位置?帶正前角形狀刀片的刀具加工出來的孔公差為IT9或更大。方法選擇所有山特維克可樂滿粗鏜刀具都可配置為多刃、階梯和單刃鏜削。 粗銑時:主軸轉(zhuǎn)速n=600r/min,vc=18mm/min,a=1mm 精銑時:主軸轉(zhuǎn)速n=600r/min,vc=90mm/min,a= 鉆中心孔時:主軸轉(zhuǎn)速n=1000r/min進給100mm/min。壽命與用量關(guān)系用硬質(zhì)合金車刀車削碳素鋼時,刀具壽命與切削用量的關(guān)系可用如下的經(jīng)驗公式表示式中t為刀具壽命(分);cv為壽命系數(shù),與刀具材料、刀具參數(shù)、工件材料和切削條件等因素有關(guān)。只是在試切削或出現(xiàn)異常情況時,才通過改變刀具偏置、通過倍率輪改變進給轉(zhuǎn)速或重新編寫程序來調(diào)節(jié)切削用量。綜上所訴,宜選擇臥式數(shù)控車床CK6180臥式刀架。在選擇時,整體斜床身結(jié)構(gòu)的剛性略高于平床身斜滑板結(jié)構(gòu),設(shè)備價格也略高一些。這類機床結(jié)構(gòu)一般有斜床身結(jié)構(gòu)和平床身斜滑板結(jié)構(gòu)兩種布局。這種機床采用平床身的布局,機床的制造工藝性好,便于導(dǎo)軌面的加工。 (6) 定位控制元件:霍爾元件 。高質(zhì)量的數(shù)控加工程序除應(yīng)保證編程精度和避免干涉外,同時應(yīng)滿足通用性好、加工時間短、編程效率高、代碼量小等。5件同加工,尺寸均相同中心孔4鉆孔鉆孔M80長度為108mm軟爪夾Ф140mm外圓5車、鉸車端面,取總長140mm至尺寸車內(nèi)孔M80長度為108mm車外槽Ф125mm至尺寸長度為6mm鉸孔 M80至尺寸軸套外兩端倒角245176。8) 確定各主要工序的技術(shù)要求及檢驗方法。機械加工工藝規(guī)程一般包括以下內(nèi)容:工件加工的工藝路線、各工序的具體內(nèi)容及所用的設(shè)備和工藝裝備、工件的檢驗項目及檢驗方法、切削用量、時間定額等。發(fā)現(xiàn)有異常響動時,應(yīng)立即停車檢修,不得強行或帶病運轉(zhuǎn),機床不準(zhǔn)超負荷使用。應(yīng)對各部位螺栓、行程限位,信號,安全防護(保險)裝置及機械傳動部分、電器部分,各潤滑點進行嚴(yán)格檢查,確定可靠后,方可啟動。后方設(shè)備工廠后方設(shè)備,如金屬切削機床(包括車、銑、刨、插等設(shè)備),如果生產(chǎn)所需的設(shè)備的零件壞了,需要維修,這樣就需要送到機加車間維修或加工。手動加工適合進行小批量、簡單的零件生產(chǎn)。車鉸內(nèi)孔時,應(yīng)與端面在一次裝夾中加工出,以保證端面與內(nèi)孔軸線的垂直度。它們在加工中,其裝夾方法和加工方法都有很大的差別,以下分別予以介紹。在進行工程圖設(shè)計時,可以自動生成詳細,準(zhǔn)確的工程圖樣,且這種工程圖樣是全相關(guān)的,即在修改圖樣時,三維模型,各個視圖,裝配體都會自動進行更新。下圖即為本設(shè)計任務(wù)零件加工的二維圖,用CAD繪圖軟件繪制,尺寸標(biāo)注及倒角要求如下圖1,圖2所示。3.培養(yǎng)學(xué)生調(diào)查研究,收集資料,熟悉有關(guān)技術(shù)文件,運用國家標(biāo)準(zhǔn)、手冊、資料等工具書進行機械零件設(shè)計或加工(如設(shè)計計算,數(shù)據(jù)處理,工程制圖等)、編寫技術(shù)文件等獨立工作能力。車床既可用車刀對工件進行車削加工,又可用鉆頭、鉸刀、絲錐和滾花刀進行鉆孔、鉸孔、攻螺紋和滾花等操作。關(guān)鍵詞:數(shù)控機床; 工藝設(shè)計; 程序編制 Abstract NC machining is a new professional machinery industry, the numerical control technology is the digital program control of CNC machine to realize automatic working technology. It is widely used in mechanical manufacturing and automation, better solve the many varieties, small batch and plex parts processing and automation of production processes. With the rapid development of puter, automatic control technology, numerical control technology has been widely used in CNC machine tools, robots and all kinds of electromechanical integration equipment. At the same time, the rapid development of social economy, the NC equipment and CNC machinery have rapidly developed and improved in the aspects of theory and application.With the development of social demand for personalized, diversified, the scale of production along the small batch mass multiple species and batch of the direction of development, and the introduction of high technology and modern management technology with puter technology as the representative, penetration and integration, constantly changing appearance and connotation of traditional manufacturing technology, which formed the advanced manufacturing technology.Numerical control is a kind of automatic control technology, its control is position, angle, speed mechanical quantity. CNC machine tools, CNC technology is the use of the machine, it is loaded with the program control machine tool, the system can logically processing has provisions for the use of numbers or other symbols coded instruction program.This paper is on the use of CNC lathe processing blank diameter 140mm, length 240mm, the material is 45 steel parts. (including bosses, outline, hole) process design, including the choice of processing methods, processing sequence arrangement, the choice of blank, types and selection of cutting tools, the choice of cutting parameters in NC machining, numerical calculation. The workpiece is used in HT150, the tool