數控車床主傳動機構設計

機械論文編號:JX194 所有圖紙,任務書,論文字數:13696.頁數:35

目錄
0 引言 .....................................................................1
1 總體設計方案擬定 .........................................................3
1．1  擬定主運動參數(、、Z) ................................................3
1．2  運動設計............................................................. 3
1．3  動力計算和結構草圖設計 ...............................................3
1．4  軸和齒輪的驗算 .......................................................3
1．5  主軸變速箱裝配設計................................................... 3
2  參數擬定................................................................ 4
2.1  車床主參數(規格尺寸)和基本參數........................................ 4
2.2  各級轉速的確定........................................................ 4
3．運動設計............................................................... 5
3．1  主擬定傳動方案....................................................... 5
3．2  傳動方案的比較....................................................... 5
3．2．1  采用單速電機...................................................... 5
3．2．2  采用雙速電機 ......................................................6
3．3  各級傳動比的計算..................................................... 7
3．4 各軸轉速的確定方法.................................................... 9
3．4．1  Ⅰ軸的轉速........................................................ 9
3．4．2   中間傳動軸的轉速 .................................................9
3．5  轉速圖擬定........................................................... 10
4  動力計算................................................................ 11
4.1  齒輪的計算 ............................................................11
4.1 .1 確定齒輪齒數和模數（查表法）........................................ 11
4．1. 2  確定齒輪的齒數和模數（計算法）并校核 ..............................12
4．1. 3  齒輪的精度設計； ..................................................15
4.2   電磁離合器的選擇和使用............................................... 19
5 軸的設計和驗算 ...........................................................21
5.1  軸的結構設計 ..........................................................21
5.2  軸的強度校核(以Ⅰ軸為例).............................................. 21
5.2.1  選擇軸的材料 ........................................................22
5.2.2  初估軸徑............................................................ 22
5.2.3  結構設計............................................................ 22
5．2. 4  軸的受力分析.......................................................23
5.3  軸的剛度校核(以Ⅰ軸為例) ..............................................25
6 主軸變速箱的裝配設計 .....................................................28
6.1  箱體內結構設計的特點.................................................. 28
6.2  設計的方法(以軸的布置為例) ............................................28
7 結論 .....................................................................31
致謝....................................................................... 32
參考文獻................................................................... 33
附件清單................................................................... 34

摘    要

      本文作者研究的主要是數控車床的主傳動系統，這類主傳動系統的設計可用于對普通車床的改造，以適應當前我國機床工業發展的現狀，具有一定的經濟效益和社會效益。
本文作者完成的設計主要包括根據一些原始數據（其中包括機床的類型、規格等）結合實際條件和情況對車床一些參數進行擬定，再根據擬定的參數，進行傳動方案的比較，確定傳動方案。然后計算各傳動副的傳動比及齒輪齒數，再估算齒輪的模數和各軸的軸徑，并對齒輪和軸的強度、剛度進行校核。除此之外，還要對箱體內的主要結構進行設計，一些零件的選型，如電磁離合器的選擇等，從而完成對整個主傳動系統的設計。

關鍵詞：數控車床  主傳動系統  設計

Abstract
       What author of this text study numerical control main transmission of lathe mainly, the main design of transmission can use for to ordinary transformation of lathe, In order to adapt to the current situation of the present industrial development of lathe of our country, have certain economic benefits and social benefit.
 The design that the author of this text finished includes according to some initial data mainly( type, specification of including the lathe ,etc.) Combine actual condition and situation draft to some parameters of lathe, and then according to the parameter drafted, Carry on the comparison of the transmission scheme, confirm the transmission scheme. It then can't calculate every transmission transmission of the packs than and gear wheel tooth count, estimate modulus and the every axle foot-paths of axle of gear wheel more, And check the intensity, rigidity of gear wheel and axle . In addition, will design the main structure in the body of the case , the selecting types of some parts, Electromagnetic choice of clutch,etc., finish to whole main design of transmission for instance.

Keywords：NC machine tool;   main driving system;  design