数控车床主传动机构设计

论文编号:JX194 所有图纸,任务书,论文字数:13696.页数:35

摘    要

      本文作者研究的主要是数控车床的主传动系统，这类主传动系统的设计可用于对普通车床的改造，以适应当前我国机床工业发展的现状，具有一定的经济效益和社会效益。
本文作者完成的设计主要包括根据一些原始数据（其中包括机床的类型、规格等）结合实际条件和情况对车床一些参数进行拟定，再根据拟定的参数，进行传动方案的比较，确定传动方案。然后计算各传动副的传动比及齿轮齿数，再估算齿轮的模数和各轴的轴径，并对齿轮和轴的强度、刚度进行校核。除此之外，还要对箱体内的主要结构进行设计，一些零件的选型，如电磁离合器的选择等，从而完成对整个主传动系统的设计。

关键词：数控车床  主传动系统  设计

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

目录
0 引言 .....................................................................1
1 总体设计方案拟定 .........................................................3
1．1  拟定主运动参数(、、Z) ................................................3
1．2  运动设计............................................................. 3
1．3  动力计算和结构草图设计 ...............................................3
1．4  轴和齿轮的验算 .......................................................3
1．5  主轴变速箱装配设计................................................... 3
2  参数拟定................................................................ 4
2.1  车床主参数(规格尺寸)和基本参数........................................ 4
2.2  各级转速的确定........................................................ 4
3．运动设计............................................................... 5
3．1  主拟定传动方案....................................................... 5
3．2  传动方案的比较....................................................... 5
3．2．1  采用单速电机...................................................... 5
3．2．2  采用双速电机 ......................................................6
3．3  各级传动比的计算..................................................... 7
3．4 各轴转速的确定方法.................................................... 9
3．4．1  Ⅰ轴的转速........................................................ 9
3．4．2   中间传动轴的转速 .................................................9
3．5  转速图拟定........................................................... 10
4  动力计算................................................................ 11
4.1  齿轮的计算 ............................................................11
4.1 .1 确定齿轮齿数和模数（查表法）........................................ 11
4．1. 2  确定齿轮的齿数和模数（计算法）并校核 ..............................12
4．1. 3  齿轮的精度设计； ..................................................15
4.2   电磁离合器的选择和使用............................................... 19
5 轴的设计和验算 ...........................................................21
5.1  轴的结构设计 ..........................................................21
5.2  轴的强度校核(以Ⅰ轴为例).............................................. 21
5.2.1  选择轴的材料 ........................................................22
5.2.2  初估轴径............................................................ 22
5.2.3  结构设计............................................................ 22
5．2. 4  轴的受力分析.......................................................23
5.3  轴的刚度校核(以Ⅰ轴为例) ..............................................25
6 主轴变速箱的装配设计 .....................................................28
6.1  箱体内结构设计的特点.................................................. 28
6.2  设计的方法(以轴的布置为例) ............................................28
7 结论 .....................................................................31
致谢....................................................................... 32
参考文献................................................................... 33
附件清单................................................................... 34