摘要液压机是在普通的机械式锻压机床的基础上逐步发展起来的。我国第一台液压机是1953年在沈阳制造成功的。起初由于受液压技术和一些液压基础元部件的局限，液压机的起步发展是比较缓慢的。近几年来，由于液压技术的不断发展，使得液压机进入了一个高速发展的黄金时期。27939
液压压力机主要是有机架、液压系统、冷却系统、加压油缸、上模及下模，加压油缸装在机架上端，并与上模联接，冷却系统与上模、下模联接。其特征在于机架下端装有移动工作台及与移动工作台联接的移动油缸，下模安放在移动工作台的上面。
现代液压机的特点:１、高强度的焊接结构梁，具有良好的经济性和适应性。2、具有较高的抗偏载能力，在工作压制过程中不会产生大的横向震动。３、具有方便快捷的更换模具功能，可进行热承载模更换等特殊作业。４、具有在高速、反复压制时换向快速平稳、无冲击的优点。
毕业论文关键词：液压机；移动工作台；结构梁
Abstract
Hydraulic machine is based on the common mechanical forging machine tool on gradually developed. China's first hydraulic press was manufactured in 1953 in Shenyang success. Initially due to the limitations of hydraulic technology and some of the basic elements of hydraulic components, start development of hydraulic machines is relatively slow. In recent years, due to the continuous development of hydraulic technology, making hydraulic machine has entered a golden period of rapid development.
The main hydraulic presses are rack, hydraulic systems, cooling systems, pressure tanks, the upper mold and the lower mold, the upper end of the pressure cylinder mounted in the frame, and coupled with the mold, the cooling system and the upper mold, the lower mold join. Wherein the rack with the bottom of the table to move the table and join the movement of mobile tanks, the lower mold placed on top of the moving platform.
It features modern hydraulic machine: 1, high-intensity beams welded structure, with good economy and adaptability. 2, has a high anti-bias load capacity, the work pressing process does not produce large lateral vibration. 3, has a quick and easy replacement of mold features that can be heat molded bearing replacement and other special operations. 4, with high-speed, fast and smooth, shock-free advantage to change when pressed repeatedly.
    Key words:Hydraulic Press；moving workbench；Structural beams
 目录
1绪论    1
2 5MN液压压机压下系装置的课题介绍                                              3
  2.1设想的压下系统的推力装置 3
2.2 一般的液压压机压下装置的示例    3
2.3 5MN液压压机压下系统设计的主要参数    4
3文献检索    5
4 5MN液压压机压下系统装置的方案拟定6
  4.1压头压下的实现方式6
  4.2柱塞缸上下运行方式7
  4.3回转压头的回转方式8
5压下系统的计算    9
5.1柱塞缸的设计    9
5.1.1计算柱塞的直径    9
5.1.2计算柱塞导向套的长度    10
5.1.3柱塞缸流量的计算    11
5.1.4柱塞缸的壁厚计算及校核    12
5.1.5定出柱塞的长度以及缸盖和缸体的连接    13
5.1.6设计用到的液控单向阀    13
5.1.7管接头的选择    14
5.1.8管道的计算    14
5.2下模具和压头部件的设计    15 5MN液压压机压下系统的设计+CAD图纸:http://www.youerw.com/jixie/lunwen_22609.html