机械5

大型数控套筒回转式尾座设计 摘要 本文主要目的是进行大型数控套筒回转式尾座的设计。大型数控套筒回转式尾座具有芯轴随工件回转、压力表显示压力、手动换档齿轮变速的功能。本文设计并介绍尾座的大致工作方式，手动换挡齿轮变速的安装过程以及对尾座的受力情况进行分析和强度及稳定性的校核。对普通圆柱蜗杆传动承载能力的计算包括蜗杆传动的受力分析，蜗轮齿面接触疲劳强度计算，蜗轮齿根弯曲疲劳强度计算，蜗杆的刚度计算以及蜗杆传动的精度等级的选择；直齿锥齿轮传动的强度计算包括轮齿的受力分析，对齿根弯曲疲劳强度计算以及按照齿面接触疲劳强度计算；轴的计算包括轴的强度校核计算和轴的刚度校核计算。分析设计过程，并作出总结和改进方式。根据设计方案,利用cad绘制总装配图以及部分主要零件图，利用solidworks软件绘制尾座结构。 关键词：尾座；手动换挡；机械设计 Abstract The mai
n purpose of this paper is to desig
n a large
numerical co
ntrol sleeve rotary tailstock. Large
numerical co
ntrol sleeve rotary tailstock has the fu
nctio
n of rotati
ng the core shaft with the workpiece, the pressure gauge shows pressure, a
nd the gear shifti
ng gear which is cha
nged ma
nually. This paper desig
ns a
nd i
ntroduces the ge
neral worki
ng mode of the tail seat, the i
nstallatio
n process of the gear shift gear shift, a
nd the a
nalysis a
nd the stre
ngth a
nd stability of the rear seat. Ordi
nary cyli
ndrical worm drive beari
ng capacity calculatio
n i
ncludi
ng the worm drive force a
nalysis, the worm gear tooth surface co
ntact fatigue stre
ngth calculatio
n, the worm gear tooth root be
ndi
ng fatigue stre
ngth calculatio
n, the calculatio
n of the rigidity for the worm a
nd worm drive the accuracy grade of choice. The stre
ngth calculatio
n of the bevel gear tra
nsmissio
n i
ncludes the force a
nalysis of the gear teeth, the calculatio
n of the fatigue stre
ngth of the tooth root a
nd the fatigue stre
ngth of the tooth surface. The calculatio
n of the shaft i
ncludes the stre
ngth of the shaft a
nd the calculatio
n of the rigidity of the shaft. A
nalyzi
ng desig
n process a
nd maki
ng summary a
nd improveme
nt. Accordi
ng to the desig
n scheme, the ge
neral assembly drawi
ng a
nd some mai
n parts drawi
ngs are draw
n by CAD, a
nd the tail-seat structure is draw
n with Solidworks software. Key Words：The tailstock; Ma
nual shift; Mecha
nical desig
n 目录 摘要I Abstract II 1绪论- 1 - 1.1课题研究的目的与意义- 1 - 1.2相关课题国内外发展的现状及发展趋势- 1 - 2总体方案- 3 - 2.1工作方式- 3 - 2.2手动换挡齿轮变速的安装过程- 4 - 2.2.1安装步骤- 4 - 2.2.2注意事项- 4 - 2.3具体装配过程- 4 - 3尾座的受力情况分析- 5 - 3.1普通圆柱蜗杆传动承载能力计算- 5 - 3.1.1蜗杆传动的受力分析- 5 - 3.1.2蜗轮齿面接触疲劳强度计算- 6 - 3.1.3蜗轮齿根弯曲疲劳强度计算- 6 - 3.1.4蜗杆的刚度计算- 6 - 3.1.5蜗杆传动的精度等级的选择- 7 - 4直齿锥齿轮传动的强度计算- 7 - 4.1直齿锥齿轮传动的强度计算- 7 - 4.1.1设计参数- 7 - 4.1.2轮齿的受力分析- 7 - 4.1.3按齿根弯曲疲劳强度计算- 8 - 4.1.4按齿面接触疲劳强度计算- 10 - 5轴的计算- 12 - 5.1轴的强度校核计算- 12 - 5.2轴的刚度校核计算- 13 - 5.2.1轴的扭矩刚度校核计算- 13 - 6设计并绘制总装图及部分零件图- 14 - 6.1尾座的零件图- 14 - 6.2尾座的装配图- 15 - 7结论- 17 - 参考文献- 18 - 附录Ⅰ外文翻译- 19 -