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寧工程技術(shù)大學課程設計 ABSTRCT This design content has involved the machine manufacture craft and the engine bed jig design, the metalcutting machine tool, the mon difference coordination and the survey and so on the various knowledge. The reduction gear box body ponents technological process and its the processing hole jig design is includes the ponents processing the technological design, the working procedure design as well as the unit clamp design three parts. Must first carry on the analysis in the technological design to the ponents, understood the ponents the craft redesigns the semi finished materials the structure, and chooses the good ponents the processing datum, designs the ponents the craft route。如果工件上表面上有好幾個不需加工的表面,則應選擇其中與加工表面的相互位置精度要求較高的表面作為粗基準。 ( 4) 應盡可能選擇平整、光潔、面積足夠大的表面作為粗基準,以保證定位準確夾緊可靠。 ( 3)“自為基準”原則 某些精加工和光整加工工序要求加工余量小而均勻,遼寧工程技術(shù)大學課程設計 第 3 頁 共 16 頁 應選擇該加工表面本身為精基準,該表面與其他表面之間的位置精度由先行工序保證。 工序 45: 鉆 M12 底孔,锪孔Φ 3,攻絲 M12 工序 50: 銑寬 20mm 側(cè)面 工序 55: 磨Φ 25 孔 工序 60:檢驗,入庫 方案二 工 序 01:鑄造 工序 05:時效處理 遼寧工程技術(shù)大學課程設計 第 4 頁 共 16 頁 工序 10:車Φ 25 端面 工序 15:車Φ 35 端面,外圓,Φ 18,Φ 25孔 工序 20: 鉆 2Φ 工序 25:銑上端Φ 35端面 工序 30:鉆Φ 20 孔 14,攻絲 M22深 12 工序 35:鉆孔Φ 工序 40:鉆 2Φ 5孔。 定位基準的選擇 本道工序加工 M12 孔,精度不高,因此我們采用已加工好的 2Φ 22 孔作為定位基準,我們采用圓柱銷和側(cè)固塊定位,確保工件的剛性和加工精度。 夾具設計簡要操作說明 使用 1 面 1 銷 1 側(cè)固塊定位,采用壓緊塊快速夾緊,通過旋轉(zhuǎn)的長度來指定可靠的卡緊力。 這次畢業(yè)設計使我以前所掌握的關于零件加工方面有了更加系統(tǒng)化和深入合理化的掌握。 這次畢業(yè)設計成績的取得,與指導老師的細心指導是分不開的。s misery, the cow told him to turn its hide into a pair of shoes after it died. The magic shoes whisked Niulang, who carried his two children in baskets strung from a shoulder pole, off on a chase after the empress. The pursuit enraged the empress, who took her hairpin and slashed it across the sky creating the Milky Way which separated husband from wife. But all was not lost as magpies, moved by their love and devotion, formed a bridge across the Milky Way to reunite the family. Even the Jade Emperor was touched, and allowed Niulang and Zhinu to meet once a year on the seventh night of the seventh month. This is how Qixi came to be. The festival can be traced back to the Han Dynasty (206 BCAD 220). Traditionally, people would look up at the sky and find a bright star in the constellation Aquila as well as the star Vega, which are identified as Niulang and Zhinu. The two stars shine on opposite sides of the Milky Way. Customs In bygone days, Qixi was not only a special day for lovers, but also for girls. It is also known as the Begging for Skills Festival or Daughters39。s Day on February 14, characterized by bouquets of roses, chocolates and romantic candlelight dinners, than they do about their homegrown day for lovers. Even Qixi is nowadays referred to as the Chinese Valentine39。從課題的選擇到項目的最終完成, 她 都始終給予我細心的指導和不懈的 支持。 回顧起此次課程設計,至今我仍感慨頗多,的確,從選題到完成定稿,從理論到實踐,在整整一學期的日子里,可以說學到了很多很多的的東西,同時鞏固了以前所學過的知識,而且學到了很多在書本上所沒有學到過的知識。 遼寧工程技術(shù)大學課程設計 第 8 頁 共 16 頁 總 結(jié) 設計是大學學習中最重要的一門科目,它要求我們把大學里學到的所有知識系統(tǒng)的組織起來,進行理論聯(lián)系實際的總體考慮,需把金屬切削原理及刀具、機床概論、公差與配合、機械加工質(zhì)量、機床夾具設計、機械制造工藝學等專業(yè)知識有機的結(jié)合起來。由《切削手冊》得: 鉆削力 HBDfF ? 式( 52) 鉆削力矩 HBfDT ? 式( 53) 式中: 11D mm? ? ? ? ?m a x m a x m i n11 1 8 7 1 8 7 1 4 9 1 7 433H B H B H B H B? ? ? ? ? ? ? mm r???代入公式( 52)和( 53)得 ? 0 . 8 0 . 626 11 0. 20 17 4 17 52FN? ? ? ? ? 1. 9 0. 8 0. 610 11 0. 20 17 4 45 42 7T N m m? ? ? ? ? ? 本道工序加工工藝孔時,夾緊力方向與鉆削力方向相同。 工序 45: 鉆 M12 底孔,锪孔Φ 3,攻絲 M12 工序 50: 銑寬 20mm 側(cè)面 工序 55: 磨Φ 25 孔 工序 60:檢驗 ,入庫 機械加工余量、工序尺寸及毛坯尺寸的確定 總泵缸體零件材料為 HT2040 遼寧工程技術(shù)大學課程設計 第 5 頁 共 16 頁 生產(chǎn)類型為大批量生產(chǎn),采