【正文】 ................................................................18中國石油大學勝利學院本科畢業(yè)設計(論文)第四章 輔助變速箱的密封和潤滑 ............................................................................19 輔助變速箱的潤滑 ...........................................................................................19 輔助變速箱齒輪的潤滑 ...........................................................................19 變速箱軸承的潤滑 ...................................................................................19 輔助變速箱的密封 ...........................................................................................20第五章 公差與配合及粗糙度的標注 ........................................................................21 軸的形位公差等級 ...........................................................................................21 形狀公差 ...................................................................................................21 位置公差 ...................................................................................................21 齒輪輪坯的形位公差 .......................................................................................21 齒輪輪坯形狀公差 ...................................................................................21 齒輪輪坯的位置公差 ...............................................................................22 粗糙度的選擇 ...................................................................................................22 配合 ...................................................................................................................23總 結 ............................................................................................................................24致謝及聲明 ..................................................................................................................25參考文獻 ......................................................................................................................26中國石油大學勝利學院本科畢業(yè)設計(論文)1第 1 章 引 言 課 題 的 背 景 和 意 義立式車床主要加工一些大型的零件，可以完成大型零件車圓柱面、攻螺紋等工藝，這為我國重型機械的發(fā)展奠定了堅實的基礎。 Auxiliary Gearbox。設計的總原則是使輔助變速箱在滿足承載能力及強度要求條件下，結構緊湊，重量輕，效率最高、體積最小、潤滑條件最佳，成本低，維修方便。在輔助變速箱的總體設計上，根據(jù)工作臺轉速的要求，首先設置了傳動路線，然后通過選取不同齒數(shù)的齒輪，畫出了轉速圖。本輔助變速箱采用傳統(tǒng)的齒輪傳動裝置，變速箱由主、輔兩部分減速器組成，在輔助變速部分，可以利用雙聯(lián)滑移齒輪、三聯(lián)滑移齒輪、撥叉、液壓油缸來實現(xiàn)其變速。本科生畢業(yè)設計（論文） 題 目： 立式車床輔助變速箱設計 學生姓名： 史 世 偉 系 別： 機械與電氣工程系 專業(yè)年級： 11 機械專升本 1 班 指導教師： 劉 慶 2022 年 6 月 20 日中國石油大學勝利學院本科畢業(yè)設計(論文)摘 要變速器是一種由原動機和工作機之間獨立的閉式機械傳動裝置，能夠降低原動機轉速或增大扭矩。本課題根據(jù)雙柱立式車床工作臺的轉速要求，設計了功率為 55kW的輔助變速箱，可以使工作臺獲得 —。通過液壓油缸的通、回油使撥叉撥動滑移齒輪使不同的齒輪嚙合以實現(xiàn)不同的減速比，從而達到變速的目的。在變速箱的結構設計上，參考了相應的圖冊和手冊，并對其中重要的傳動件進行了校核。關鍵詞：雙柱立式車床；輔助變速箱；減速器；滑移齒輪中國石油大學勝利學院本科畢業(yè)設計(論文)AbstractThe speed chang gear is one kind of the independent closed type mechanical drive which locates between the prime mover and the working machine. It can reduce the prime mover rotational speed or increase the torque. This topic according to the doublecolumn type vertical lathe workbench speed requirements，has designed of a power auxiliary gearbox 55kW which can make workbench obtain r/min speed between 18 levels.The auxiliary gearbox adopts the traditional gear transmission device，transmission by main, auxiliary two parts reducer. In the auxiliary transmission parts, can use double sliding gears, threecouple sliding gears, fork, hydraulic cylinder to realize its speed. Through the hydraulic oil cylinder, makes sliding gears click to different gear to realize the different reduction ratio, so as to achieve the different speed.In the overall design of the auxiliary gearbox, according to the requirement of workbench speed, firstly, we set the transmission line, and then choose different binations of gears according to different reduction ratios, at last we draw the speed diagram. In the structure design of the auxiliary gearbox, we refered to the corresponding pictures and manual, and some important transmission parts are checked.The design total principle is causes the auxiliary gearbox in to satisfy the bearing capacity and under the intensity request condition, the structure is pact, the weight is light, the efficiency is highest, the volume is smallest, the lubrication condition is best, the cost is low, the s