連桿孔研磨裝置設計

機械論文編號:JX179 所有圖紙,任務書,開題報告,論文字數:8560.頁數:23

目錄
前言....................................................................1
摘要....................................................................2
１　課題的提出..........................................................4
2  傳動方案的擬定.......................................................5
2.1 設計的目的分析......................................................5
2.2 主運動傳動方案的確定................................................5
2.3 進給運動傳動方案的確定..............................................5
3　設計計算.............................................................8
3.1  計算連桿大小頭內孔面積.............................................8
3.2  計算傳遞效率.......................................................8
3.3  選擇電機...........................................................8
3.4  計算大小頭孔主軸的傳遞功率及轉速...................................8
3.5  主軸設計...........................................................13
3.6  鍵的選擇...........................................................17
3.7  軸承的選擇.........................................................18
4  研磨頭部分的設計.....................................................23
4.1  研具材料的選擇.....................................................23
4.2  研磨棒的結構.......................................................23
4.3  研磨操作工藝參數的選取.............................................23
4.4  研磨膏的配制.......................................................23
5 其他結構的設計........................................................25
5.1 主軸箱的結構設計....................................................25
5.2床身的設計...........................................................25
5.3底座的設計...........................................................25
5.4防護罩...............................................................25
6 重點分析說明..........................................................27
6.1 主軸支承部分結構的分析..............................................27
6.2  軸承的潤滑.........................................................27
7 使用及其維護說明......................................................29
7.1  使用說明...........................................................29
7.2  維護說明...........................................................29
致謝...................................................................30
參考資料................................................................30

摘   要

     連桿是柴油機中非常重要的一個部件，它連接了活塞與曲軸，把作用在活塞頂面的氣體膨脹的力傳給了曲軸，使活塞的往復運動變為了曲軸的旋轉運動。連桿在工作中承受著劇烈變化的動載荷，承受著瞬變的旋轉壓力。連桿在運動中形成的慣性力和離心力相當大，在這樣的工作條件下，要求連桿有強度高、重量輕、剛性好、韌性強、使用壽命長的特點。
 連桿大小頭孔在金剛鏜床上加工后進行手動滾壓小頭孔，這種加工只適應于小批量生產，然而在大批量的生產中就沒有實際的意義，因為這種加工不容易達到精度和表面粗糙度要求。為了解決這一問題，需要在加工方法上進行改進，使用能同時研磨大小頭孔的專用裝置，以提高生產率，減輕勞動強度，提高加工精度。所以設計了這臺能同時研磨大小頭孔的專用機床。
  
關鍵詞：連桿、強度、壽命、改進、效率。
 

Abstract

       Connecting rod is a very important diesel engine component. It links the piston and crank, piston top face in the role of the gas expansion of the crank to enable the movement to the piston into the rotation of the crank movement. Connecting rod dramatic changes in their work bear the moving load, the D-bear pressure. Connecting rod in the movement of inertia and centrifugal force considerable power in the working conditions for connecting rod with high intensity, light weight, although good, strong resilience, life-long characteristics.
    Connecting rod sizes in the first lords boring lathe processing Kong after the first small hand rollers Kong, which only apply to small batch processing, and then in the production of large quantities of no practical significance, since it is not easy to achieve precision processing and surface roughness. To address this problem, the need for improvements in processing methods, and equipment used to the size of the first Kong dedicated machine tools to increase productivity and reduce labor intensity, and enhance processing accuracy. 
   Keywords：Connecting rod、Intensity、 life expectancy,、improve、 efficiency。