【正文】 本科畢業(yè)設計說明書 齒輪油泵機械加工工藝及工藝裝備設計與數(shù)控仿真 GEAR PUMP MECHANICAL PROCESS EQUIPMENT DESIGN AND CNC SIMULATION 學院（部）： 機 械 工 程 學 院 專業(yè)班級： 聯(lián)系方式： ： 1819410887 學生姓名： 全套都有 指導教師： 2020 年 5 月 20 日 齒輪油泵機械加工工藝及工藝裝備設計與數(shù)控仿真 安徽理工大學畢業(yè)設計 II 摘要 零件的工藝編制是否合理，直接關系到零件的加工能否達到質量要求；合理的工藝編制就能使各工序科學地銜接，實現(xiàn)優(yōu)質、高產低消耗，使生產均衡、順利地進行。同時，機床夾具在機械制造中也占有重要的地位，合理的夾具設計能可靠地保證工件的加工質量，提高加工效率，減輕勞動強度，充分發(fā)揮和擴大機床的工藝性能?？梢娺@兩者在機械制造行業(yè)中是至關重要的環(huán)節(jié)。本次設計的是齒輪油泵上的零件滑油泵體在加工中心機上加工時的專用夾具，因滑油泵體的各個加工面精度要求較高，故夾具要求 比較高。在編制加工工藝時，要考慮到各個加工面的各項精度以及形狀與位置公差等。 齒輪泵泵體采用灰鑄鐵 HT200，其內腔容易受到磨損，為延長齒輪油泵的使用時間，所以要經常對其內腔進行修復。 泵殼內腔磨損后，一般采取內腔鑲套法修復，即將內腔搪大后鑲配鑄鐵或鋼襯套。鑲套后，將內腔搪 閥座的修理：限壓閥有球形閥和柱塞式閥兩種。球形閥座磨損后，可將一鋼球放在閥座上，然后用金屬棒輕輕敲擊鋼球，直到球閥與閥座密合為止。如閥座磨損嚴重，可先鉸削除去磨痕，再用上法使之密合。 在設計加工中心的專用夾具時，以加工過的滑油泵體底面為 基準，采用一面兩銷定位，即以泵體底面、定位銷和削邊銷進行定位。為了降低成本、減少裝夾時間，采用氣動鉸鏈板聯(lián)動裝置。氣壓缸活塞向右移動時，推桿跟斜楔一起向右運動，從而使支撐釘向上移動，移動壓板繞活節(jié)螺栓轉動從而對工件進行壓緊。 關鍵詞：滑油泵體，加工中心，專用夾具，工藝編程，一面兩銷 GEAR PUMP MECHANICAL PROCESS EQUIPMENT DESIGN 安徽理工大學畢業(yè)設計 III AND CNC SIMULATION ABSTRACT Parts of the process establishment is reasonable, directly related to the parts of the process can meet the quality requirements。 reasonable process planning can make the process scientific convergence, highquality, highyield low consumption, the production of a balanced, smooth. Meanwhile, the machine tool fixture occupies an important position in the machinery manufacturing, fixture design can reliably guarantee the quality of the workpiece processing, improve processing efficiency, reduce labor intensity, and give full play to expand the process performance of the machine. Visible both in the machinery manufacturing industry is a vital part. The design of the processing of the oil pump gear pump parts on machining centers, special fixtures are higher, so the fixture requirements are relatively high due to the machined surface accuracy of the oil pump. In the preparation of the process, taking into account the accuracy of the machined surface and the shape and position tolerances. The gear pump body with a gray cast iron HT200, its cavity is susceptible to wear, to extend the use of the gear pump time, so often its cavity repair. Cavity inserts after the wear of the pump housing cavity, in general, repair, uping cavity Boring big set with cast iron or steel liner. Casement cavity Boring 5, seat repair: the pressure limiting valve ball valve and plunger valve two. Spherical valve seat wear, a ball placed on the seat, and then gently tap the ball with a metal rod until the ball valve and valve seat seal. Such as the seat is badly worn, hinges can be trimmed away to go to the wear scar, and then on the law to make it fit. Special fixture design and processing center, the underside of the processed oil pump as a benchmark, using the positioning of two sells, that the underside of the pump body, positioning pins and cutting edge marketing positioning. In order to reduce costs, reduce the clamping time, the use of pneumatic hinge 安徽理工大學畢業(yè)設計 IV board interlocks. The pneumatic cylinder piston moves to the right, putting together with the wedge moves to the right, so that the support nails move up, move the plate around the eyelet bolt rotation of the workpiece pressed. KEYWARDS： oil pump, machining centers, special fixtures, process programming, and two sells 安徽理工大學畢業(yè)設計 ii 目錄 摘要 ..................................................................... II ABSTRACT ................................................................ III 1緒論 .................................................................... 1 引言 .............................................................. 1 課題研究目的 ...................................................... 1 課題研究內容 ...................................................... 1 課題研究現(xiàn)狀 ...................................................... 2 2零件的分析 .............................................................. 2 ......................................................... 2 零件的工藝分析 .................................................... 2 零件生產類型的確定 ................................................ 4 3 工藝規(guī)程的設計 .......................................................... 4 確定毛坯的制造形式 ................................................ 4 基準的選擇 ........................................................ 5 粗基準的選擇 ................................................. 5 精基準的選擇 ................................................. 5 確定機械加工余量及毛坯尺寸 ........................................ 6 求最大輪廓尺寸 ............................................... 6 選取公差等級 CT .............................................. 6 求鑄件尺寸公差 ............................................... 6 求機械加工余量等級 ........................................... 6 求要求的鑄件機械加工余量（ RMA） .............................. 6 零件表面加工方法的選擇 ............................................ 7 制訂工藝路線 ...................................................... 8 確定切削用量及基本工時 ........................................... 12 ........................................................ 33 問題的提出 ....................................................... 33 夾具設計 ......................................................... 33 確定定位方案 ................................................ 33 定位元件的選擇 .............................................. 34 可換式圓柱定位銷 ...................................... 34 可換式菱形定位銷 ...................................... 35 安徽理工大學畢業(yè)設計 iii 定位襯套 ............................................... 35 支承板 ................................................. 36 確定夾緊方案 ................................................ 37 夾具體的設計 ................................................ 38 定位誤差分析與計算 .......................