某气液增压型液压机的结构设计

目录

引言 (1)

第1章绪论 (1)

1.1 本文研究背景及意义 (1)

1.2 气液增压发展及应用 (2)

第2章液压机整体布局及方案拟定 (4)

2.1设计要求 (4)

2.2液压机整体布局方案拟定 (4)

2.3本章小结 (5)

第3章气液增压系统设计 (6)

3.1气液增压原理设计 (6)

3.2液压缸和气液增压缸得主要参数确定 (7)

3.2.1按载荷选择工作压力 (7)

3.2.2计算液压缸内径D (7)

3.2.3增压比 (7)

3.2.4气液增压缸的缸径 (7)

3.2.5气液增压缸的行程 (8)

3.2.6运动速度 (8)

3.2.7流量 (9)

3.3元件选择 (9)

3.4本章小结 (9)

第4章主机设计 (10)

4.1液压缸设计 (10)

4.1.1液压缸的类型以及安装方式 (10)

4.1.2液压缸的结构设计及材料选择 (10)

1.端盖与缸筒的连接 (10)

2.活塞与活塞杆的连接 (10)

3.确定活塞杆直径 (11)

4.液压缸行程S (11)

5.推力和拉力 (11)

6.缸筒壁厚尺寸0δ (12)

7.油口尺寸 (12)

8.缸底厚度δ (12)

9.端盖法兰厚度计算h (13)

10.缸盖、缸筒连接强度计算 (13)

11.缸体的材料和技术要求 (13)

12.活塞杆的材料和技术要求 (14)

13.端盖的材料与技术要求 (14)

14.液压缸的密封和防尘处理 (15)

15.导向带的设置 (15)

4.2气液增压缸设计 (16)

1.缸筒壁厚尺寸1δ、2δ (16)

2.缸底厚度计算21B B 、 (16)

3.缸体的材料和技术要求 (15)

4.活塞杆的材料和技术要求 (17)

5.端盖的材料与技术要求 (17)

6.气液增压缸的密封 (18)

7.导向带 (18)

4.3机架设计 (18)

1.立柱 (18)

2.导向杆 (18)

3.上横梁 (18)

4.活动横梁 (19)

5.下横梁 (19)

6.角钢 (19)

7.上横梁校核计算 (19)

8.立柱校核计算 (20)

4.4本章小结 (21)

第五章结束语 (22)

参考文献 (22)

致谢 (24)

摘要

汽车零部件自动化装配生产线主要包括打标、压装、涂胶、拧紧和密封检测、性能检测等工位。汽车零部件自动化装配生产线压装工位中的压力机一般为气动压力机或液压机。如今有气液增压型液压机，以压缩空气为动力，通过气液增压缸产生局部高压的压力机。这种压力机输出力大且稳定、自动化程度高、柔性大，并且可通过编程实现压力和频率控制等优越性解决了传统液压机需要独立的液压泵站，存在占地面积大、不易维护、污染环境以及油温需要冷却等缺点。本文将设计一种气液增压型的液压机，通过设计机身、气液增压系统、气液增压缸、液压缸。在人能站立操作的情况下以气源压力为0.8MPa，能完成工作载荷为80KN及以下的冲压，打标等。

关键词：液压机；气液增压；压力机；液压

Abstract

Auto parts automatic assembly line mainly includes marking, pressing, gluing, tightening and sealing inspection, performance inspection and other stations. The press in the press station of auto parts automatic assembly line is usually pneumatic press or hydraulic press. Nowadays, there are pneumatic and hydraulic pressure presses, which use compressed air as power and generate local high pressure through pneumatic and hydraulic pressure cylinders. This kind of press has the advantages of large and stable output force, high automation degree and flexibility, and can realize pressure and frequency control through programming, etc. It solves the disadvantages of the traditional hydraulic press, such as large occupied area, difficult maintenance, environmental pollution, cooling of oil temperature, etc. This paper will design a kind of hydraulic press with gas-liquid pressurization. By designing the machine body, gas-liquid pressurization system, gas-liquid pressurization cylinder and hydraulic cylinder. Under the condition that people can stand and operate, the air source pressure is 0.8MPa, and the stamping and marking with a working load of 80KN or less can be completed.

Keywords:Hydraulic press; Gas-liquid pressurization; Press; Hydraulic pressure