摘 要

Abstract

This is useful for Pan gang resolve Hot MILL three technical transformation projects (up roller mill width Control System (AWC)). After the transformation,It  needs to bore the existing legislation for roller mill housing bore for the installation of a long journey servo tank. If Legislative roll mill housing bore sent to factories to bore, the quality is assurance and reliable, but it fixed back ,it can’t assure installation quality and accuracy. To reduce the technological transformation project costs, the legislature decided to roll mill site for reaming rack processing. After painstaking research, combining with the actual prombles work out special equipment bore -- special boring machine. In the light of the special equipment reaming technology, a practical solution. The program is economic, practical, possible features.
Characteristic of this design: Has solved the prombles such as installment and the boringrod rigidity; Satisfied expanded compares the pocket therequest; This special purpose equipment boring cutter system uses the horizontal boring machine the Pingxuan plate structure, may facilitate the adjustment cutting tool depth of cut; The guide rail uses the combined type guide rail, causes the movement steadily, the installment is convenient; The strut uses the aggregate machine-tool pattern strut, is advantageous for the disassemblage installment, may greatly enhance the productivity.
 
 
Key words Special Equipment, Special boring machine, Processing efficiency,   Technology Experiment
目  录
 
摘 要 I
Abstract II
 
1  绪 论 1
1.1 设计目的和意义 1
1.2 扩孔技术要求 1
1.3 应解决的问题 1
1.4 设计项目的发展情况 2
1.5设计原理 2
2  总体设计 3
2.1 总体设计原则 3
2.2 工艺分析 3
2.3 总体方案的比较 3
2.3.1 刀杆的安装形式 3
2.3.2 进给方式 4
2.3.3 升降运动形式 4
2.3.4 机床运动的分配 4
2.3.5 选择传动形式和支撑形式 4
3  力能参数计算 6
3.1 镗削用量的选择及转矩、功率的确定原则 6
3.2 最佳切削用量的选择 6
3.2.1 现有镗孔工艺参数 6
3.2.2 镗削切削速度、扭矩和切削功率公式 7
3.2.3 主要镗削参数的计算 7
3.3 选择电机 9
4  扩孔机传动系统设计 10
4.1 确定总传动比 10
4.2 分配传动装置的传动比 10
4.3 计算总的机械效率 11
4.4 计算传动装置各轴的运动和动力参数 11
4.5 带传动设计 12
4.6 传动斜齿轮的设计计算 14
4.6.1 选定齿轮类型、精度等级、材料及齿数 14
4.6.2 按齿面接触强度设计 14
4.6.4 几何尺寸计算 17
4.6.5 计算Ⅰ－Ⅱ轴间圆柱斜齿轮 18
4.6.6 齿轮的结构设计 18
4.7 轴的结构设计 18
4.7.1 轴设计的主要内容 18
4.7.2 轴的材料 19
4.7.3 轴的设计计算 19
4.7.4 按扭转强度初步估算轴径 19
4.7.5 轴的机构设计 20
4.7.6求轴上的载荷 21
4.7.7按弯扭合成应力校核的轴的强度 22
4.7.8 精确校核轴的疲劳强度 23
4.7.9 对轴Ⅱ进行设计 25
4.8 对所有选用键进行强度校核 30
4.9 对承受较大载荷的圆锥滚子轴承进行校核 31
4.10 镗刀系统设计 33
4.10.1镗刀头 33
4.10.2 镗杆选择 33
4.11 箱体的结构设计 34
5  导轨设计 36
6  镗刀强度及镗杆的稳定性验算 38
7  工艺试验 42
结  论 43
参 考 文 献 44
附录A: E1立辊轧机机架加工工序图 45
附录B: E2立辊轧机机架加工工序图 46
致   谢 47