畢業(yè)設計 齒輪泵泵體工藝及加工Φ14、2-M8孔夾具設計
論文說明書共27頁，字數總計：6902
資料簡介：
A3-箱體.dwg
A3-圓形支承板.dwg
A3-鉆模板.dwg
A3-齒輪泵.dwg
工序卡.dwg
工藝卡1.dwg
工藝卡2.dwg
A1-夾具體.dwg
A2-齒輪泵毛坯圖.dwg
A3-雙圓柱盤.dwg
A3-箱蓋.dwg
畢業(yè)設計（論文）任務書.doc
目 錄.doc
畢業(yè)設計說明書.doc
摘 要

在機械制造的機械加工、檢驗、裝配、焊接和熱處理等冷熱工藝過程中，使用著大量的夾具，用以安裝加工對象，使之占有正確的位置，以保證零件和產品的質量，并提高生產效率。
在機床上加工工件時，為了保證加工精度，必須正確安裝工件，使其相對機床切削成形運動和刀具占有正確的位置，這一過程稱為“定位”。為了不因受切削力、慣性力、重力等外力作用而破壞工件已定的正確位置，還必須對其施加一定的夾緊力，這一過程稱為“夾緊”。定位和夾緊的全過程稱為“安裝”。在機床上用來完成工件安裝任務的重要工藝裝備，就是各類夾具中應用最為廣泛的“機床夾具”。
機床夾具的種類很多，其中，使用范圍最廣的通用夾具，規(guī)格尺寸多已標準化，并且有專業(yè)的工廠進行生產。而廣泛用于批量生產，專為某工件加工工序服務的專用夾具，則需要各制造廠根據工件加工工藝自行設計制造。因此，專用夾具的設計是一項重要生產準備工作，每一個從事加工工藝的工裝設計人員，都應該掌握有關夾具設計的基礎知識。
本設計的主要內容是設計鉆床夾具，需要對齒輪泵端蓋上的2個M8螺孔和1個 的孔進行鉆削加工。文中介紹了工件在夾具體中的定位方式，定位元件與定位機構的選擇，及夾緊機構的選擇與設計?，F代高效率的夾具大多采用機動夾緊，按力源分有氣動、液壓、氣液聯合、電傳動及利用機床運動等對工件進行夾緊。這些方式具有夾緊動作快，夾緊力穩(wěn)定，可減輕工人勞動強度等優(yōu)點。本設計選用電動機作為夾緊的動力裝置，運用機電傳動控制回路來控制電動機的正反轉，借以控制被加工工件在夾具體上的夾緊。此外，文中還對夾具進行了簡單的精度分析與計算。
機械零件上往往都有各種不同用途和不同精度的孔需要加工。在機械加工中，孔的加工量所占比例較大，其中鉆頭、擴孔鉆、鉸刀等定尺寸刀具加工占相當多數。這時，除了要保證孔的尺寸精度外，還要達到孔的位置精度要求。在單件小批量生產中，用劃線后找正孔軸線位置方法加工，更因鉆頭剛性差、易變形，因此生產效率低且精度差。在批量生產中一般都采用鉆床夾具，鉆床夾具又稱鉆模，通過鉆套引導刀具進行加工可準確地確定刀具與工件之間的相對位置，是鉆模的主要特點。鉆削時，被加工孔的尺寸和精度主要由刀具本身的尺寸和精度來保證；而孔的位置精度則由鉆套在夾具上相對于定位元件的位置精度來確定。因為通過鉆套引導刀具進行加工，這就既可能提高刀具系統(tǒng)剛性，又能防止鉆頭引偏。

關鍵詞：機械制造，通用夾具，專用夾具，鉆床夾具，齒輪泵，電動機
ABSTRCT

At the machine manufacture machine-finishing, the examination,the assembly, the welding and the heat treatment and so on in the coldhot technological process, are using the massive jigs, with installsthe processing object, enable it to hold the correct position,guarantees the components and the product quality, and enhancementproduction efficiency.
Processes the work piece when the engine bed, in order to guaranteethe processing precision, must correctly install the work piece,causes its relative engine bed cutting forming movement and thecutting tool holds the correct position, this process is called "thelocalization". For because of Cutting force, inertial force , exogenic processand so on the gravity is not destroyed the work piece already thecorrect position which decides, but also must certainly exert to itclamps the strength, this process is called "clamps". Locates theentire process which and clamps to be called "the installment". Usesfor on the engine bed to complete the work piece to install the dutythe important craft equipment, is in each kind of jig widely applies"the engine bed jig".
Engine bed jig type very many, among, the use scope broadest generaljig, the specification size are many has standardized, and has thespecialty the factory to carry on the production. But widely uses inthe volume production, specially unit clamp which serves for some workpiece processing working procedure, then needs various factoriesindependently to design the manufacture according to the work pieceprocessing craft. Therefore, the unit clamp design is an importantproduction preparatory work, each is engaged in the processing craftthe work clothes design personnel, all should grasp the elementaryknowledge which the related jig designs.
This design main content designs the drilling machine jig, needs thecounter gear pumps on the end cover 2 M8 hole and 1 the holecarries on drills truncates the processing. In the article introducedthe work piece in clamps the concrete center the locate mode, locatesthe part and the detent mechanism choice, and clamps the organizationthe choice and the design. The modern high efficiency jig mostly usesmobile clamps, divides according to the strength source has airoperated, the hydraulic pressure, the gas fluid union, the electricitytransmission and so on carries on using the engine bed movement to thework piece clamps. These ways have clamp the movement quickly, clampsthe strength to be stable, may reduce merit and so on worker laborintensity. This design selects the power unit whi..